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Wyszukujesz frazę "Control theory" wg kryterium: Temat


Wyświetlanie 1-100 z 100
Tytuł:
Controllability of dynamical systems. A survey
Autorzy:
Klamka, J.
Powiązania:
https://bibliotekanauki.pl/articles/202396.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
controllability
dynamical systems
control theory
Opis:
The main objective of this article is to review the major progress that has been made on controllability of dynamical systems over the past number of years. Controllability is one of the fundamental concepts in the mathematical control theory. This is a qualitative property of dynamical control systems and is of particular importance in control theory. A systematic study of controllability was started at the beginning of sixties in the last century, when the theory of controllability based on the description in the form of state space for both time-invariant and time-varying linear control systems was worked out. Roughly speaking, controllability generally means, that it is possible to steer a dynamical control system from an arbitrary initial state to an arbitrary final state using the set of admissible controls. It should be mentioned, that in the literature there are many different definitions of controllability, which strongly depend on a class of dynamical control systems and on the other hand on the form of admissible controls. Controllability problems for different types of dynamical systems require the application of numerous mathematical concepts and methods taken directly from differential geometry, functional analysis, topology, matrix analysis and theory of ordinary and partial differential equations and theory of difference equations. In the paper we use mainly state-space models of dynamical systems, which provide a robust and universal method for studying controllability of various classes of systems. Controllability plays an essential role in the development of modern mathematical control theory. There are various important relationships between controllability, stability and stabilizability of linear both finite-dimensional and infinite-dimensional control systems. Controllability is also strongly related to the theory of realization and so called minimal realization and canonical forms for linear time-invariant control systems such as the Kalmam canonical form, the Jordan canonical form or the Luenberger canonical form. It should be mentioned, that for many dynamical systems there exists a formal duality between the concepts of controllability and observability. Moreover, controllability is strongly connected with the minimum energy control problem for many classes of linear finite dimensional, infinite dimensional dynamical systems, and delayed systems both deterministic and stochastic. Finally, it is well known, that controllability concept has many important applications not only in control theory and systems theory, but also in such areas as industrial and chemical process control, reactor control, control of electric bulk power systems, aerospce engineering and recently in quantum systems theory.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2013, 61, 2; 335-342
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A mathematical analysis of a smart-beam which is equipped with piezoelectric actuators
Autorzy:
Destuynder, P.
Powiązania:
https://bibliotekanauki.pl/articles/205504.pdf
Data publikacji:
1999
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
teoria sterowania
beam theory
control theory
smart structures
Opis:
First of all, a brief reminder on piezoelectric effect is given. Then it is applied to a beam equipped with such actuators. The influence of tile shape and location is discussed. A smart beam model is finally presented and analyzed. The controllability is carefully examined in the framework of the H.U.M. method of Lions (1988). Let us also underline that the asymptotic harmonic behaviour of the structure is videly used.
Źródło:
Control and Cybernetics; 1999, 28, 3; 503-530
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ położenia czujników i elementów wykonawczych na stabilność układu wirnik-łożyska magnetyczne
Influence of noncollocation of sensors and actuators on the stability of magnetic bearing-rotor system
Autorzy:
Gosiewski, Z.
Powiązania:
https://bibliotekanauki.pl/articles/275480.pdf
Data publikacji:
2010
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
teoria sterowania
układy regulacji
niekolokacja
control theory
control systems
non-collocation
Opis:
Z punktu widzenia teorii sterowania, drgania wirników są szybkimi procesami wysokiego rzędu, a wirnik obiektem o wielu wejściach i wielu wyjściach (MIMO). Dlatego stosuje się lokalne pętle regulacyjne. W artykule, rozważanym obiektem jest sztywny wirnik podparty przez dwa promieniowe łożyska magnetyczne. Przedstawiono metodę redukcji modelu wirnika na potrzeby projektowania lokalnych układów regulacji. Przedstawiona metoda redukcji jest użyteczna dla każdej metody projektowania praw sterowania, a zwłaszcza dla systemów sterowania odpornego Pokazano wyniki badań wpływu niekolokacji (gdy czujniki i elementy wykonawcze nie leżą w tych samych płaszczyznach) na dynamikę układu zamkniętego. Zaproponowano możliwości przeciwdziałania negatywnym skutkom niekolokacji.
Magnetic bearing-rotor system is a fast high-order multi-input multi-output (MIMO) system. Therefore, local control loops are used. The rigid rotor with two radial magnetic bearings is considered in the paper. The sensors are shifted from the magnetic bearing planes what leads to the non-collocated local closed-loops. The stability of full closed-loop system is analyzed for different locations of sensors. Proposed is a method to reduce the influence of non-collocation on dynamic behavior of closed-loop full system.
Źródło:
Pomiary Automatyka Robotyka; 2010, 14, 2; 426-442
1427-9126
Pojawia się w:
Pomiary Automatyka Robotyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Geometric optimal control and two-level dissipative quantum systems
Autorzy:
Bonnard, B.
Sugny, D.
Powiązania:
https://bibliotekanauki.pl/articles/970909.pdf
Data publikacji:
2009
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
optimal control theory
conjugate and cut loci
quantum mechanics
Opis:
The objective of this article is to present techniques of geometric time-optimal control developed to analyze the control of two-level dissipative quantum systems. Combined with numerical simulations they allow to compute the time-minimal control using a shooting method. The robustness with respect to initial conditions and dissipative parameters is also analyzed using a continuation method.
Źródło:
Control and Cybernetics; 2009, 38, 4A; 1053-1080
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Solving a permutation problem by a fully polynomial-time approximation scheme
Autorzy:
Gawiejnowicz, Stanisław
Kurc, Wiesław
Pankowska, Lidia
Powiązania:
https://bibliotekanauki.pl/articles/729290.pdf
Data publikacji:
2010
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
combinatorial optimization
discrete control theory
fully polynomial-time approximation scheme
Opis:
For a problem of optimal discrete control with a discrete control set composed of vertices of an n-dimensional permutohedron, a fully polynomial-time approximation scheme is proposed.
Źródło:
Discussiones Mathematicae, Differential Inclusions, Control and Optimization; 2010, 30, 2; 191-203
1509-9407
Pojawia się w:
Discussiones Mathematicae, Differential Inclusions, Control and Optimization
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Online control education using 3D holographic visualisation
Autorzy:
Matišák, Jakub
Rábek, Matej
Žáková, Katarína
Powiązania:
https://bibliotekanauki.pl/articles/1837378.pdf
Data publikacji:
2020
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
control theory
hologram
furuta pendulum
education
3D model
scilab
Opis:
Interactive 3D visualization technology has brought many benefits into education. Since it is possible to visualize behavior of wide range of devices, it is much easier to imagine processes where these devices are included. The paper demonstrates the application for interactive teaching of control theory. It allows to simulate a holographic model of a selected mechatronic system that is a digital visualization of the real device. The behaviour of the device is controlled by Scilab/Xcos, which is open‐source, cross‐platform numerical computational environment. The main purpose of the application is to help students with better understanding of physical meaning of abstract mathematical models, that describes dynamical systems.
Źródło:
Journal of Automation Mobile Robotics and Intelligent Systems; 2020, 14, 3; 42-47
1897-8649
2080-2145
Pojawia się w:
Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Model and Implementation of System Evolving Algorithm with Distributed Beginning Population
Autorzy:
Tchórzewski, J.
Ruciński, A.
Powiązania:
https://bibliotekanauki.pl/articles/92846.pdf
Data publikacji:
2006
Wydawca:
Uniwersytet Przyrodniczo-Humanistyczny w Siedlcach
Tematy:
artificial intelligence methods
evolving algorithm
electric power market
control theory
Opis:
This paper shows some results of using artificial intelligence methods for searching the new state of development system of electro energetic transmission network. In particular, is using evolving algorithm. Some experiments are prepared in MATLAB and Simulink environment.
Źródło:
Studia Informatica : systems and information technology; 2006, 1(7); 133-146
1731-2264
Pojawia się w:
Studia Informatica : systems and information technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Economic Strain and Adolescent Violence. Are extracurricular activities a conditioning effect?
Autorzy:
Pitt, Cassady
Walker, Brittani
Powiązania:
https://bibliotekanauki.pl/articles/1991080.pdf
Data publikacji:
2022-01-01
Wydawca:
Academicus. International Scientific Journal publishing house
Tematy:
participation in sports
economic disadvantage
adolescent delinquency
social control theory
Opis:
This article examines the extent to which participation in sports acts as a conditioning effect to the relationship between economic disadvantage and adolescent violent delinquency. Deriving hypotheses from general strain and social control theories, we use data from the National Longitudinal Study of Adolescent Health to test if type of extracurricular activity participation diminishes the risk of economic disadvantage on violent delinquency. In support of social control theory, the direct effect of academic clubs and performing arts is negatively associated with adolescent violence. Additionally, analyses indicate that participation in contact sports decreases the relationship economic disadvantage and violent delinquency when other strain controls are added including race/ethnicity, family structure, lack of parental supervision, etc. Overall findings are expected of the social control conditioning effect of general strain theory.
Źródło:
Academicus International Scientific Journal; 2022, 13, 25; 194-213
2079-3715
2309-1088
Pojawia się w:
Academicus International Scientific Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On the fuzzy control stochastic differential systems
Autorzy:
Tung, T. T.
Powiązania:
https://bibliotekanauki.pl/articles/970073.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
fuzzy theory
differential equations
fuzzy differential equation
fuzzy stochastic differential system
control theory
Opis:
In this paper, fuzzy control stochastic differentia systems are introduced. The existence and some comparison results on solutions of fuzzy control stochastic differential systems and on sheaf-solutions of sheaf fuzzy control stochastic systems are provided. The continuous dependence of solutions and sheaf-solutions on initials and controls is investigated. The results obtained are correct and meaningful for the theory control.
Źródło:
Control and Cybernetics; 2013, 42, 2; 505-525
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Determination of the optimal exchange rate via control of the domestic interest rate in Nigeria
Autorzy:
Ekhosuehi, V. U.
Ogbonmwan, S. M.
Powiązania:
https://bibliotekanauki.pl/articles/406440.pdf
Data publikacji:
2014
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
balance-of-payments
domestic interest rate
exchange rate
optimal control theory
statistical control
Opis:
An economic scenario has been considered where the government seeks to achieve a favourable balance-of-payments over a fixed planning horizon through exchange rate policy and control of the domestic interest rate. The dynamics of such an economy was considered in terms of a bounded optimal control problem where the exchange rate is the state variable and the domestic interest rate is the control variable. The idea of balance-of-payments was used as a theoretical underpinning to specify the objective function. By assuming that, changes in exchange rates were induced by two effects: the impact of the domestic interest rate on the exchange rate and the exchange rate system adopted by the government. Instances for both fixed and flexible optimal exchange rate regimes have been determined. The use of the approach has been illustrated employing data obtained from the Central Bank of Nigeria (CBN) statistical bulletin.
Źródło:
Operations Research and Decisions; 2014, 24, 1; 23-36
2081-8858
2391-6060
Pojawia się w:
Operations Research and Decisions
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Financing university education in Nigeria : a proposal for infrastructure replenishment in universities
Autorzy:
Ekhosuehi, V.
Iguodala, W. A.
Osagiede, A. A.
Powiązania:
https://bibliotekanauki.pl/articles/406369.pdf
Data publikacji:
2016
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
Hamilton–Pontryagin equation
higher education
optimal control theory
replenishment
university education
Opis:
The subject of replenishment of infrastructure in Nigerian public universities has been of great concern to stakeholders in the educational system. How to obtain an appropriate replenishment plan that would give the desired infrastructure for a university after a certain period of time is a long-standing problem. We attempt to find a solution to this problem from an engineering perspective based on optimal control theory. The revenue generated through the payment of school fees and the costs of investment in infrastructure are used to construct the objective function. The state variables are the amount budgeted for such an investment and the stock of infrastructure, while the rate of replenishment is used as the control variable. The problem is solved by utilising Pontryagin’s principle. The dynamics of the replenishment plan is illustrated with an example. The results show that there should be a steady increase in the amount budgeted, in order to attain the desired infrastructure.
Źródło:
Operations Research and Decisions; 2016, 26, 4; 33-47
2081-8858
2391-6060
Pojawia się w:
Operations Research and Decisions
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On a property of weak resolvents and its application to a spectral problem
Autorzy:
Uetake, Yoichi
Powiązania:
https://bibliotekanauki.pl/articles/1294816.pdf
Data publikacji:
1997
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
weak resolvent
cyclic vector
spectral radius
Hardy class
operator model theory
scattering theory
control theory
Opis:
We show that the poles of a resolvent coincide with the poles of its weak resolvent up to their orders, for operators on Hilbert space which have some cyclic properties. Using this, we show that a theorem similar to the Mlak theorem holds under milder conditions, if a given operator and its adjoint have cyclic vectors.
Źródło:
Annales Polonici Mathematici; 1997, 66, 1; 263-268
0066-2216
Pojawia się w:
Annales Polonici Mathematici
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stabilność nieliniowych układów dynamicznych
Autorzy:
Kabziński, Jacek
Mosiołek, Przemysław
Powiązania:
https://bibliotekanauki.pl/articles/302670.pdf
Data publikacji:
2020
Wydawca:
Wydawnictwo Druk-Art
Tematy:
dynamika
teoria sterowania
nieliniowy układ dynamiczny
dynamics
control theory
nonlinear dynamical system
Opis:
Teoria stabilności nieliniowych układów dynamicznych wchodzi w zakres podstawowego kursu teorii sterowania dla studentów automatyki i robotyki oraz mechatroniki. Zazwyczaj omawia się podstawowe definicje stabilności i twierdzenia najważniejsze dla bezpośredniej metody Lapunowa, służące do badania stabilności punktów równowagi układów stacjonarnych i autonomicznych. Tymczasem w ostatnich dziesięcioleciach teoria stabilności układów nieliniowych była ciągle rozwijana i sukcesywnie pojawiały się twierdzenia rozszerzające jej zastosowania. Rozdziały w tej części książki mają charakter encyklopedycznego przeglądu aktualnego stanu wiedzy w tym zakresie. Podano najpierw definicje precyzujące różne pojęcia stabilności (rozdział pierwszy), a następnie twierdzenia, które można zastosować przy badaniu stabilności układów stacjonarnych (rozdział drugi) i niestacjonarnych (rozdział trzeci). Przedstawione pojęcia zilustrowano kilkoma przykładami. Dowody twierdzeń podano jedynie wtedy, gdy ułatwiają one zrozumienie istoty zjawisk. Sporo miejsca poświęcono ograniczoności i ostatecznej ograniczoności trajektorii, które są bardzo „praktycznym” rodzajem stabilności układów nieliniowych.
Źródło:
Napędy i Sterowanie; 2020, 22, 4; 74-78
1507-7764
Pojawia się w:
Napędy i Sterowanie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Variational formalism applied to control of autonomous switching systems
Autorzy:
Bagdouri, M. E.
Cebron, B.
Sechilariu, M.
Burger, J.
Powiązania:
https://bibliotekanauki.pl/articles/970461.pdf
Data publikacji:
2004
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
teoria sterowania
system komutacyjny
rachunek wariacyjny
control theory
switching systems
variational calculation
Opis:
The formalism of the calculus of variations is applied to determine an optimal control of a class of Hybrid Dynamical Systems. This class consists of autonomous switching systems where jumps of the state are taken into account. It is shown that model switching involves discontinuities in the adjoint state of the system. The expression of the gradient of the cost function, with respect to the control, allows for the calculation of an optimal control by implementing a descent method. Au illustrative linear quadratic example is given, which allows to conclude that, the method can be easily implemented.
Źródło:
Control and Cybernetics; 2004, 33, 4; 535-549
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Collaborative intelligence - definition and measured impacts on internetworked e-work
Autorzy:
Zhong, H.
Levalle, R. R.
Moghaddam, M.
Nof, S. Y.
Powiązania:
https://bibliotekanauki.pl/articles/406926.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
collaboration lifecycle management
computer-supported collaborative work
enterprise collaboration
intelligent control
resilience
collaborative control theory
Opis:
Internetworked e-Work is enabling new channels in cyber space for collaboration among physical and cyber agents, e.g., humans, robots, software agents. Research on Collaborative Control Theory (CCT) indicates that building and augmenting the Collaborative Intelligence (CI) of participants in cyber-physical networks can provide better support for achieving their individual and common goals. In spite of its rising significance and popularity, however, no clear and precise definition and universal quantitative measure has been proposed for the CI. In this article, we first formalize the CI by suggesting a formal definition, based on the definitions of its elements - collaboration and intelligence. We then propose a quantitative measure for the CI, adapted from the universal intelligence measure. For illustration, we analyze three recent collaborative e-Work studies at three different scales: (1) Telerobotenabled computer supported collaborative design; (2) Collaborative product line control in supply networks; (3) Demand and capacity sharing in multi-enterprise collaboration. From these case studies, common advantages such as work efficiency, network robustness and stability, service level, resource utilization, and collaboration cost are observed, analyzed, and translated into formal CI measures. Results indicate significant impacts of CI on the efficiency, effectiveness, and quality of collaborative activities in emerging e-Work networks.
Źródło:
Management and Production Engineering Review; 2015, 6, 1; 67-78
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Extremal problems for second order hyperbolic systems involving multiple time delays
Autorzy:
Kowalewski, Adam
Powiązania:
https://bibliotekanauki.pl/articles/27312006.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
optimal control theory
boundary control
second order hyperbolic systems
multiple time delays
electric long lines
Opis:
Extremal problems for multiple time delay hyperbolic systems are presented. The optimal boundary control problems for hyperbolic systems in which multiple time delays appear both in the state equations and in the Neumann boundary conditions are solved. The time horizon is fixed. Making use of Dubovicki-Milutin scheme, necessary and sufficient conditions of optimality for the Neumann problem with the quadratic performance functionals and constrained control are derived.
Źródło:
Archives of Control Sciences; 2023, 33, 1; 101--126
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Existence and solution sets of impulsive functional differential inclusions with multiple delay
Autorzy:
Helal, M.
Ouahab, A.
Powiązania:
https://bibliotekanauki.pl/articles/256052.pdf
Data publikacji:
2012
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
impulsive functional differential inclusions
decomposable set
parameter differential inclusions
AR-set
control theory
Opis:
In this paper, we present some existence results of solutions and study the topological structure of solution sets for the following first-order impulsive neutral functional differential inclusions with initial condition: [formula] where J : = [0; b] and 0 = t0 < t1 < ... < tm < tm+1 = b (m ∈ N*), F is a set-valued map and g is single map. The functions Ik characterize the jump of the solutions at impulse points tk (k = 1, ... m). Our existence result relies on a nonlinear alternative for compact u.s.c. maps. Then, we present some existence results and investigate the compactness of solution sets, some regularity of operator solutions and absolute retract (in short AR). The continuous dependence of solutions on parameters in the convex case is also examined. Applications to a problem from control theory are provided.
Źródło:
Opuscula Mathematica; 2012, 32, 2; 249-283
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rodzina i społeczność lokalna jako agendy kontroli bezpośredniej oraz pośredniej w profilaktyce zachowań przestępczych
Family and the local community as direct and indirect control agencies in prevention of criminal behawior
Autorzy:
Bernasiewicz, Maciej
Powiązania:
https://bibliotekanauki.pl/articles/1366330.pdf
Data publikacji:
2020-12-29
Wydawca:
Fundacja Pedagogium
Tematy:
kontrola rodzicielska
społeczność lokalna
teoria kontroli społecznej
przestępczość nieletnich
parental control
local community
control theory
delinquency
Opis:
W  tekście omówiono teorię kontroli społecznej na przykładzie kontroli rodzicielskiej oraz sposobów konformizowania swoich członków przez społeczność lokalną. Obie instytucje socjalizacji wymuszają porządek (ład) społeczny za pomocą dwóch form kontroli: bezpośredniej (zewnętrzne sankcje) oraz pośredniej (więź społeczna). W tekście dowodzi się, że umiarkowany poziom kontroli jest wyraźnym czynnikiem chroniącym przed przestępczością.
The text discusses the theory of social control on the example of parental control and local community ways to conform its members. Both institutions of socialization enforce the social order by means of two forms of control: direct (external sanctions) and indirect (social bond). The text argues that a moderate level of control is a protective factor for crime.
Źródło:
Resocjalizacja Polska; 2020, 20; 81-90
2081-3767
2392-2656
Pojawia się w:
Resocjalizacja Polska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Strategie sterowania ślizgowego z ruchomą hiperpowierzchnią przełączeń - krótki przegląd
Sliding Mode Control Strategies with a Time-Varying Switching Hypersurface - a Brief Survey
Autorzy:
Latosiński, Paweł
Powiązania:
https://bibliotekanauki.pl/articles/275701.pdf
Data publikacji:
2020
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
teoria sterowania
sterowanie ślizgowe
ruchome hiperpowierzchnie przełączeń
control theory
sliding mode control
time-varying sliding hypersurface
Opis:
Strategie sterowania ślizgowego są cenione za swoją całkowitą niewrażliwość na klasę zakłóceń i niepewności modelu. Uzyskanie tej właściwości jest możliwe przez sprowadzenie punktu opisującego dynamikę układu na pewną hiperpowierzchnię przełączeń zdefiniowaną w przestrzeni stanów. W początkowym etapie sterowania, w którym punkt opisujący zbliża się do tej hiperpowierzchni, układ pozostaje wrażliwy na zakłócenia, co utrudnia projektowanie skutecznych strategii sterowania ślizgowego. Aby zapewnić odporność układu na zakłócenia i niepewności modelu na wszystkich etapach procesu sterowania liczni autorzy zaproponowali zastosowanie ruchomych hiperpowierzchni przełączeń. Celem niniejszego artykułu przeglądowego jest przedstawienie najważniejszych osiągnięć z zakresu sterowania ślizgowego z wykorzystaniem takich hiperpowierzchni. Omówione są pionierskie prace proponujące zastosowanie ruchomych hiperpowierzchni przełączeń oraz przedstawione są metody ich projektowania. Następnie podkreślone są najważniejsze osiągnięcia z zakresu sterowania ślizgowego wykorzystującego ruchome hiperpowierzchnie przełączań zarówno dla układów ciągłych jak i dyskretnych.
Sliding mode control strategies are valued for their total insensitivity to the class of disturbances and uncertainty of the model. Obtaining this property is possible by bringing a point describing the dynamics of the system to a certain switching hypersurface defined in the state space. At the initial stage of control, where the description point approaches this hypersurface, the system remains sensitive to interferences, which hinders the design of effective sliding mode control strategies. To ensure the system’s resistance to interference and model uncertainty at all stages of the control process, many authors proposed the use of mobile switching hypersurfaces. The purpose of this review article is to present the most important achievements in the area of sliding mode control using such hypersurfaces. Discussed are pioneering works proposing the use of mobile switching hypersurfaces and methods of their design are presented. Next, the most important achievements in the area of sliding mode control using movable switching hypersurfaces for both continuous and discrete systems are highlighted.
Źródło:
Pomiary Automatyka Robotyka; 2020, 24, 1; 41-47
1427-9126
Pojawia się w:
Pomiary Automatyka Robotyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Joint queue-perturbed and weakly coupled power control for wireless backbone networks
Autorzy:
Olwal, T. O.
Djouani, K.
Kogeda, O. P.
van Wyk, B. J.
Powiązania:
https://bibliotekanauki.pl/articles/330956.pdf
Data publikacji:
2012
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
sterowanie mocą
sterowanie rozproszone
sieć szkieletowa
sterowanie optymalne
decentralized power control
singular perturbation theory
weak coupling theory
wireless backbone networks
optimal control theory
Opis:
Wireless Backbone Networks (WBNs) equipped with Multi-Radio Multi-Channel (MRMC) configurations do experience power control problems such as the inter-channel and co-channel interference, high energy consumption at multiple queues and unscalable network connectivity. Such network problems can be conveniently modelled using the theory of queue perturbation in the multiple queue systems and also as a weak coupling in a multiple channel wireless network. Consequently, this paper proposes a queue perturbation and weakly coupled based power control approach for WBNs. The ultimate objectives are to increase energy efficiency and the overall network capacity. In order to achieve this objective, a Markov chain model is first presented to describe the behaviour of the steady state probability distribution of the queue energy and buffer states. The singular perturbation parameter is approximated from the coefficients of the Taylor series expansion of the probability distribution. The impact of such queue perturbations on the transmission probability, given some transmission power values, is also analysed. Secondly, the inter-channel interference is modelled as a weakly coupled wireless system. Thirdly, Nash differential games are applied to derive optimal power control signals for each user subject to power constraints at each node. Finally, analytical models and numerical examples show the efficacy of the proposed model in solving power control problems in WBNs.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2012, 22, 3; 749-764
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On a stable solution of the problem of disturbance reduction
Autorzy:
Maksimov, Vyacheslav I.
Powiązania:
https://bibliotekanauki.pl/articles/1838215.pdf
Data publikacji:
2021
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
disturbance reduction
dynamical controlled system
guaranteed control theory
redukcja zakłóceń
system sterowany dynamicznie
teoria sterowania
Opis:
We study the problem of active reduction of the influence of a disturbance on the output of a linear control system. We consider a system of linear differential equations under the action of an unknown disturbance and a control to be formed. Our goal is to design an algorithm for reducing the disturbance by means of an appropriate control on the basis of inaccurate measurements of the system phase coordinates. This algorithm should form a feedback control that would guarantee that the trajectory of a given system tracks the trajectory of the reference system, i.e., the system described by the same differential equations but with zero control and disturbance. We present an algorithm for solving this problem. The algorithm, based on the constructions of guaranteed control theory, is stable with respect to informational noises and computational errors.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2021, 31, 2; 187-194
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Lepschy stability test and its application to fractional-order systems
Autorzy:
Casagrande, Daniele
Krajewski, Wiesław
Viaro, Umberto
Powiązania:
https://bibliotekanauki.pl/articles/1409108.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
fractional-order systems
D-stability
recursive algorithms
complex polynomials
root locus
symmetries
control-theory didactics
Opis:
It is shown how a stability test, alternative to the classical Routh test, can profitably be applied to check the presence of polynomial roots inside half-planes or even sectors of the complex plane. This result is obtained by exploiting the peculiar symmetries of the root locus in which the basic recursion of the test can be embedded. As is expected, the suggested approach proves useful for testing the stability of fractional-order systems. A pair of examples show how the method operates. It is believed that the suggested geometric approach can also be of some didactic value in introducing basic control-system tools to engineering students.
Źródło:
Archives of Control Sciences; 2021, 31, 1; 145-163
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A semi-active control of lateral vibrations of the overhung rotor using dampers with the magneto-rheological fluid
Autorzy:
Michajłow, M.
Konowrocki, R.
Szolc, T.
Powiązania:
https://bibliotekanauki.pl/articles/127741.pdf
Data publikacji:
2016
Wydawca:
Politechnika Poznańska. Instytut Mechaniki Stosowanej
Tematy:
overhung rotor-shaft
lateral vibrations
semi-active control
optimal control theory
wał wirnika
drgania poprzeczne
sterowanie półaktywne
teoria sterowania optymalnego
Opis:
In the paper there is proposed an algorithm of an efficient semi-active control of steady-state periodic lateral vibrations of the overhung rotor-shaft system. This algorithm has been developed using fundamentals of the Optimal Control Theory. In the considered system the control is realized by means of the linear dampers with the magneto-rheological fluid built in the bearing housing. The computational example demonstrates possibilities of the applied approach resulting in an additional reduction of out-of-resonance and near-resonance harmonic oscillation amplitudes in comparison with an analogous passive control.
Źródło:
Vibrations in Physical Systems; 2016, 27; 273-280
0860-6897
Pojawia się w:
Vibrations in Physical Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Insider understanding of country development: a novel application of Optimal Control Theory and Data Envelopment Analysis for benchmarking performance of Chilean and Brazilian companies
Autorzy:
Alves Junior, Paulo Nocera
Yushimito, Wilfredo F.
Gude, Jorge Pereira
Melo, Isotilia Costa
Rebelatto, Daisy Aparecida do Nascimento
Powiązania:
https://bibliotekanauki.pl/articles/14430662.pdf
Data publikacji:
2019-03-27
Wydawca:
Wyższa Szkoła Bankowa we Wrocławiu
Tematy:
Data Envelopment Analysis (DEA)
Optimal Control Theory (OCT)
Dynamic Efficiency
Developing Countries
Inventory Control
Production-Inventory System
Benchmarking
Best Practices.
Opis:
Aim: If companies manage their inventory inefficiently, inventory costs can increase significantly due to shortages, overstocking, and risks. Inventory management is critical for company’s success which, in turn, impacts on countries’ development. This paper aims to investigate the efficiency of inventory control systems of companies from Brazil and Chile through Optimal Control Theory and Data Envelopment Analysis. Design/Research methods: Data was collected from Chilean and Brazilian companies covering different industries in which both countries are mostly dependent A new approach using OCT and DEA is applied for dealing with inventory, production, and demand in Dynamic DEA model to benchmark companies’ production-inventory systems. Conclusions/findings: The results show efficient companies among evaluated industries. Such companies are related mainly to Brazilian commerce and Chilean exports. Based on findings, it was possible to identify patterns and relationship among companies and its inventory management. Originality/value of the article: This paper fills a gap in studies including demand, production, and inventory in Dynamic DEA by using OCT to forewarn unrealistic results and observing companies’ behavior. Besides that, this approach is particularly useful for developing countries in this context, determining benchmarks for the most inefficient firms in each sector. Implications of the research: The results show (1) which companies should focus more on improving inventory management, (2) which companies should be used as benchmarks, and (3) it highlights the reasons of different performance of companies in each country. Limitations of the research: For future research, it is suggested including variables and analysis of social and environmental impacts.
Źródło:
Central European Review of Economics and Management; 2019, 3, 1; 47-93
2543-9472
Pojawia się w:
Central European Review of Economics and Management
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Laboratorium Automatyki, Robotyki i Systemów Fotowoltaicznych - profile działalności naukowo-badawczej
Laboratory of Automatics, Robotics and PV systems - areas of research
Autorzy:
Oprzędkiewicz, K.
Teneta, J.
Zaczyk, M.
Garbacz, M.
Więckowski, Ł.
Powiązania:
https://bibliotekanauki.pl/articles/274580.pdf
Data publikacji:
2011
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
systemy fotowoltaiczne
robotyka
systemy sterowania cyfrowego
automatyka przemysłowa
teoria sterowania
PV systems
robotics
digital control systems
industrial automation
control theory
Opis:
W pracy przedstawiono proi le działalności naukowo-badawczej Laboratorium Automatyki, Robotyki i Systemów Fotowoltaicznych, działającego w ramach Katedry Automatyki na Wydziale Elektrotechniki, Automatyki, Informatyki i Elektroniki Akademii Górniczo-Hutniczej w Krakowie. W laboratorium prowadzone są badania z zakresu: modelowania, sterowania i optymalizacji systemów fotowoltaicznych, projektowania i implementacji systemów sterowania robotami, sterowania systemami dynamicznymi o niepewnych parametrach. Prowadzone są także prace związane z praktyczną realizacją systemów sterowania z użyciem sterowników PLC oraz automatyzacją procesów przemysłowych.
In the paper areas of research run in Laboratory of Automatics, Robotics and PV systems are presented. Our Laboratory is a part of Department of Automatics, which works in Faculty of Electrotechnics, Automatics, Informatics and Electronics at AGH University of Science and Technology. In our laboratory research from following areas are run: modeling, control and optimization of PV systems, projects and implementation of control systems for robots and control of uncertain-parameter dynamic systems. Research from area of practical implementation of PLC-based digital control systems and industrial automation are also run.
Źródło:
Pomiary Automatyka Robotyka; 2011, 15, 12; 137-143
1427-9126
Pojawia się w:
Pomiary Automatyka Robotyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A spectral method of the analysis of linear control systems
Autorzy:
Kurdyukov, Alexander P.
Boichenko, Victor A.
Powiązania:
https://bibliotekanauki.pl/articles/329786.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
anisotropy based control theory
anisotropic norm
ℋ2-norm
H∞ norm
teoria sterowania
norma anizotropowa
norma H-nieskończoność
Opis:
A spectral method of the analysis of linear control systems is considered. Within the framework of this approach the σ-entropy of input signals and the σ-entropy norm of systems are introduced. The invariance of the introduced norm makes it possible to get invariant results of σ-entropy analysis.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2019, 29, 4; 667-679
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Infinite time horizon optimal current control of a stepper motor exploiting a finite element model
Autorzy:
Bernat, J.
Stępień, S.
Stranz, A.
Szymański, G.
Sykulski, J. K.
Powiązania:
https://bibliotekanauki.pl/articles/200378.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
optimal control theory
linear quadratic problem
finite element method
teoria sterowania optymalnego
liniowo-kwadratowy problem
metoda elementów skończonych
Opis:
An optimal control theory based method is presented aiming at minimizing the energy delivered from source and the power loss in a stepper motor circuit. A linear quadratic current regulator with an infinite time horizon is employed and its appropriateness for this type of a problem explained. With the purpose of improving the accuracy of the control system, the self and mutual inductances of windings are calculated using a finite element model. The numerically computed results are verified experimentally.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2014, 62, 4; 835-841
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Artificial genetic code of development of electric power system
Autorzy:
Tchórzewski, J.
Powiązania:
https://bibliotekanauki.pl/articles/92982.pdf
Data publikacji:
2010
Wydawca:
Uniwersytet Przyrodniczo-Humanistyczny w Siedlcach
Tematy:
electric power system
modem electric power system
unmanned manufactory
self-developing system
control theory
identification of development
MATLAB
Simulink
Opis:
The paper presents the results of research concerning the identification of electric power system development, which was carried out for the IEEE RST 96 test data [4, 13]. The problem of development was formulated in the form of artificial genetic code, and the results of the research concerning the regularities of the development of the electric power system on the basis of IEEE RST 96 test data, including the obtained coefficient-based artificial code of development.
Źródło:
Studia Informatica : systems and information technology; 2010, 1-2(14); 29-37
1731-2264
Pojawia się w:
Studia Informatica : systems and information technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modelowanie układów sterowania z użyciem pochodnych ułamkowych
Control system modeling with using fractional derivatives
Autorzy:
Dec, Grzegorz Rafał
Powiązania:
https://bibliotekanauki.pl/articles/2015049.pdf
Data publikacji:
2020
Wydawca:
Politechnika Rzeszowska im. Ignacego Łukasiewicza. Oficyna Wydawnicza
Tematy:
PID
CRONE
MATLAB
FOMCON
FOTF
ninteger
teoria sterowania
identyfikacja
control system theory
identifying
Opis:
W pracy przedstawiono przegląd niektórych podejść związanych z problematyką pochodnych ułamkowych w ujęciu teorii sterownia. Zaprezentowano popularne w przemyśle algorytmy sterowania z użyciem pochodnych ułamkowych, wraz z metodami projektowania. Stosowanie rachunku różniczkowego o niecałkowitym stopniu jest stosunkowo nowym podejściem, lecz zyskującym na zainteresowaniu. Rozważania w ostatnich latach wskazują, że wiele problemów np. termodynamicznych, czy biologicznych może być z powodzeniem rozpatrywanych za pomocą po chodnych ułamkowych. Na rynku dostępne są już narzędzia, które wspomagają proces identyfikacji oraz projektowania regulatorów w oparciu o dane eksperymentalne. Jednym z takich narzędzi jest CRONE, będącym zestawem narzędzi w Matlabie, który zawiera trzy moduły: matematyczny, identyfikacyjny, projektowania systemu sterowania. Umożliwia zaimplementowanie autorskich regulatorów CRONE o różnym stopniu złożoności. Innym z narzędzi jest FOMCON, który również jest zestawem narzędzi w Matlabie i jest oparty na istniejącym wcześniej narzędziu FOTF. FOMCON umożliwia identyfikację systemu oraz zaprojektowanie regulatora PIλDµ . Głównym celem artykułu jest zaprezentowanie obecnego stanu wiedzy, omówienie podstawowych narzędzi i pojęć związanych z pochodnymi ułamkowymi oraz ich zastosowaniem w sterowaniu, takimi jak: funkcja gamma postacie pochodnej i całki o stopniu niecałkowitym, transformata Laplace’a i podstawy teorii sterowania
In the paper is presented review of some approaches corelated with subject of using fractional derivatives in control system theory. Popular algorithms used in the industry are presented, along with relating designing methodology. Using of fractional derivatives calculations is relatively new concept, but constantly getting increasing interest. Deliberation in recent years indicate that many scientific problems like thermodynamic or biology problems can be well considered and modeled by fractional order derivatives. On the market there is available tools that support a processes of identification and regulators designing, based on experimental data. One of such tools are toolbox CRONE for MATLAB, which contains three modules: mathematical, identifying, system control designing. That toolbox allows implementation of CRONE regulators with different level of complexity. Other tool is FOMCON, which also is a toolbox for MATLAB and it is based on already existed toolbox FOTF. FOMCON allows to identifying of control system and PIλDµ regulator designing. This article is aiming to present current state of art, discussion about existing tools and concepts correlated with fractional order derivatives and their usage in control system theory, like: gamma function, definition of fractional derivative, Laplace transform and basics of control system theory.
Źródło:
Zeszyty Naukowe Politechniki Rzeszowskiej. Elektrotechnika; 2020, 38 [301], 1-2; 33-50
0209-2662
2300-6358
Pojawia się w:
Zeszyty Naukowe Politechniki Rzeszowskiej. Elektrotechnika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Das Allgemeine im Besonderen – Mechanismen der Obligatorischen Kontrolle am Beispiel des Deutschen
General in particular – mechanisms of obligatory control on the example of German
Autorzy:
Aptacy, Jarosław
Powiązania:
https://bibliotekanauki.pl/articles/517787.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Wrocławski. Oficyna Wydawnicza ATUT – Wrocławskie Wydawnictwo Oświatowe
Tematy:
Movement Theory of Control
German
Subject- and Object Control
Universal Grammar
Opis:
The aim of this article is to show which generative mechanisms are responsible for establishing a control relationship between syntactic structures. As a theoretical basis, the Movement Theory of Control by Hornstein was chosen because it has already been tested in numerous languages and has universal character. Its applicability was exemplified by some data of subject and object control in German. For this purpose, some derivations have been outlined. In addition, difficulties that this theory encounters were pointed out. For example, in the derivation of subject control over object, as it exists in the case of promise-verbs.
Źródło:
Beiträge zur allgemeinen und vergleichenden Sprachwissenschaft; 2019, 8; 7-28
2657-4799
Pojawia się w:
Beiträge zur allgemeinen und vergleichenden Sprachwissenschaft
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zastosowanie teorii sterowania do oceny skuteczności polityki pieniężnej i fiskalnej
The application of control theory to evaluate the effectiveness of monetary and fiscal policy
Autorzy:
Przybylska-Mazur, Agnieszka
Powiązania:
https://bibliotekanauki.pl/articles/586560.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Ekonomiczny w Katowicach
Tematy:
Koszt dobrobytu
Polityka fiskalna
Polityka pieniężna
Skuteczność polityki
Teoria sterowania
Control theory
Effectiveness of policy
Fiscal policy
Monetary policy
Welfare cost
Opis:
Ocena skuteczności polityki pieniężnej i fiskalnej jest często przeprowadzana na podstawie mnożników polityki pieniężnej i polityki fiskalnej. W artykule ocena skuteczności polityki pieniężnej i fiskalnej zostanie wykonana na podstawie teorii sterowania optymalnego. W celu oceny skuteczności zostaną porównane oczekiwane koszty dobrobytu w trzech przypadkach: oba instrumenty polityki pieniężnej i fiskalnej określone na podstawie sterowania ze sprzężeniem zwrotnym, jak również jeden z instrumentów określony na podstawie reguły ze sprzężeniem zwrotnym, natomiast drugi jako instrument pasywny.
The evaluation of effectiveness of monetary and fiscal policy is often performed on the basis of multipliers of the monetary policy and fiscal policy. In this paper we use the optimal control framework to analyze the effectiveness of monetary and fiscal policies. In order to evaluate the effectiveness will be compared the expected welfare costs in three cases: two instruments of monetary and fiscal policies determined on the basis of feedback rules, and one of the instruments is determined under feedback rule and the second as a passive instrument.
Źródło:
Studia Ekonomiczne; 2017, 316; 147-157
2083-8611
Pojawia się w:
Studia Ekonomiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of IQT on research in ICT
Autorzy:
Bednarski, Bogdan J.
Lepak, Łukasz E.
Łyskawa, Jakub J.
Pieńczuk, Paweł
Rosoł, Maciej
Romaniuk, Ryszard S.
Powiązania:
https://bibliotekanauki.pl/articles/2055259.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
ICT
control theory
IQT
Information Quantum Technologies
Quantum 2.0
applications of IQT
quantum systems
qubit neural networks
quantum time series forecasting;
Quantum Reinforcement Learning
Opis:
This paper is written by a group of Ph.D. students pursuing their work in different areas of ICT, outside the direct area of Information Quantum Technologies IQT. An ambitious task was undertaken to research, by each co-author, a potential practical influence of the current IQT development on their current work. The research of co-authors span the following areas of ICT: CMOS for IQT, QEC, quantum time series forecasting, IQT in biomedicine. The intention of the authors is to show how quickly the quantum techniques can penetrate in the nearest future other, i.e. their own, areas of ICT.
Źródło:
International Journal of Electronics and Telecommunications; 2022, 68, 2; 259--266
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Znaczenie niepewności w aspekcie podejmowania optymalnych decyzji polityki pieniężnej i fiskalnej
The importance of uncertainty in terms of optimal monetary and fiscal policy decisions
Autorzy:
Przybylska-Mazur, Agnieszka
Powiązania:
https://bibliotekanauki.pl/articles/590838.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Ekonomiczny w Katowicach
Tematy:
Decyzje optymalne
Decyzje polityki pieniężnej i fiskalnej
Model polityki gospodarczej
Niepewność
Sterowanie optymalne
Control theory
Economic policy model
Monetary and fiscal policy decisions
Optimal decision
Uncertainty
Opis:
Celem artykułu jest wyznaczenie optymalnych reguł polityki pieniężnej i fiskalnej na podstawie teorii sterowania optymalnego. Wyznaczone reguły są rozwiązaniem modelu polityki gospodarczej, składającego się z funkcji kryterium oraz modelu gospodarki. W artykule zweryfikowano hipotezę, że w warunkach niepewności reakcje decydentów są mniej gwałtowne niż w sytuacji braku niepewności. Instrumentami badawczymi są rozwiązania modelu gospodarki, w którym nie uwzględniamy niepewności, a także rozwiązania modeli, w których uwzględniamy istnienie niepewności: modelu addytywnego polityki gospodarczej oraz modelu zawierającego niepewność sterowania. Na podstawie przeprowadzonej analizy empirycznej można zauważyć, że identyczne są optymalne decyzje wyznaczone na podstawie modelu, w którym nie wzięto pod uwagę niepewności i addytywnego modelu polityki gospodarczej. Zauważono wpływ na optymalne decyzje niepewności, przedstawionej w postaci multiplikatywnego składnika losowego, występującego w macierzy wpływu instrumentów polityki pieniężnej i fiskalnej na zmienne stanu.
The aim of this article is the calculation of the optimal monetary and fiscal policy rule based on optimal control theory. The calculated rules are a solution of economic policy model that consists of the criterion function and model of economy. In this article we verify the hypothesis that in conditions of uncertainty the reactions of decision- -makers concerning the monetary and fiscal policy instruments are less violent than in the absence of uncertainty. Research tools to verify this hypothesis are the solutions of model in which we do not take into account the uncertainty and solutions of models in which we take into account the uncertainty: the additive economic policy model, as well as the model containing the uncertainty of control, On the basis of the empirical analysis, we can see that the optimal monetary and fiscal policy decisions are identical in the case of a model in which we do not take into account the uncertainty and in case of additive economic policy model. We can also noted the impact the multiplicative random component in the matrix of the influence of monetary and fiscal policy instruments on the optimal decisions.
Źródło:
Studia Ekonomiczne; 2017, 324; 78-90
2083-8611
Pojawia się w:
Studia Ekonomiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Was raten von versprechen unterscheidet. Zur Behandlung der Kontrollinfinitive in der Dependenzgrammatik und im Minimalistischen Programm
What is the difference between advise and promise? The treatment of control infinitives in Dependency Grammar and Minimalist Program
Autorzy:
Aptacy, Jarosław
Powiązania:
https://bibliotekanauki.pl/articles/1288807.pdf
Data publikacji:
2018-12-20
Wydawca:
Uniwersytet Gdański. Wydawnictwo Uniwersytetu Gdańskiego
Tematy:
Kontrollinfinitiv
Movement Theory of Control
Thetarollen
Argumentbewegung
Subjekt-/Objektkontrolle
control infinitive
Theta roles
argument movement
subject-/
object control
Opis:
Das Ziel des vorliegenden Beitrags ist es, die Behandlung der Infinitivkonstruktionen in der Dependenzgrammatik und im Minimalistischen Programm (MP) zu vergleichen. Der Vergleich beschrankt sich auf den Konstruktionstyp der Kontrollinfinitive. Die wichtigsten Ergebnisse der Konfrontation sind: In der Dependenzgrammatik wird nicht eindeutig uber die Satzwertigkeit des Infinitivkomplements entschieden, wahrend im MP explizite Aussagen dazu gemacht werden; die Referenzeigenschaften des leeren Infinitivsubjekts kommen in der Dependenzgrammatik am Rande zur Sprache, im MP bilden sie den Kern der Kontrolltheorie; thematische Rollen werden in der Dependenzgrammatik nicht erwahnt, im MP (genauerin der Movement Theory of Control) gelten sie als Ausloser syntaktischer Derivationen.
The aim of this paper is to compare the treatment of infinitive constructions in the Dependency Grammar and the Minimalist Program (MP). The comparison is limited to the construction type of the control infinitive. The most important results of the confrontation are: The Dependency Grammar does not decide unambiguously about the sentence value of the infinitive complement, while in the MP explicit statements are made; the reference properties of the empty infinitive subject are marginalized in Dependency Grammar, in the MP they form the core of the control theory; thematic roles are not mentioned in dependency grammar, in MP (more precisely in the Movement Theory of Control) they are regarded as triggers of syntactic derivations.
Źródło:
Studia Germanica Gedanensia; 2018, 39; 148-160
1230-6045
Pojawia się w:
Studia Germanica Gedanensia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Trajectory tracking of a wheeled mobile robot with uncertainties and disturbances: proposed adaptive neural control
Autorzy:
Martins, N. A.
Alencar, M.
Lombardi, W. C.
Bertol, D. W.
Pieri, E. R.
Filho, H. F.
Powiązania:
https://bibliotekanauki.pl/articles/971045.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
wheeled mobile robot
trajectory tracking
kinematic control
variable structure control
dynamic control
sliding mode theory
neural networks
Lyapunov theory
Opis:
This paper analyses a trajectory tracking control problem for a wheeled mobile robot, Rusing integration of a kinematic neural controller (KNC) and a torque neural controller (TNC), in which both the kinematic and dynamic models contain uncertainties and disturbances. The proposed adaptive neural controller (PANC) is composed of the KNC and the TNC and is designed with use of a modeling technique of Gaussian radial basis function neural networks (RBFNNs). The KNC is a variable structure controller, based on the sliding mode theory and is applied to compensate for the disturbances of the wheeled mobile robot kinematics. The TNC is an inertia-based controller composed of a dynamic neural controller (DNC) and a robust neural compensator (RNC) applied to compensate for the wheeled mobile robot dynamics, bounded unknown disturbances, and neural network modeling errors. To minimize the problems found in practical implementations of the classical variable structure controllers (VSC) and sliding mode controllers (SMC), and to eliminate the chattering phenomenon, the nonlinear and continuous KNC and RNC of the TNC are applied in lieu of the discontinuous components of the control signals that are present in classical forms. Additionally, the PANC neither requires the knowledge of the wheeled mobile robot kinematics and dynamics nor the timeconsuming training process. Stability analysis, convergence of the tracking errors to zero, and the learning algorithms for the weights are guaranteed based on the Lyapunov method. Simulation results are provided to demonstrate the effectiveness of the proposed approach.
Źródło:
Control and Cybernetics; 2015, 44, 1; 47-98
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of ERPs neuromarkers for assessment and treatment of a patient with chronic crossed aphasia after severe TBI and long-term coma - case report
Autorzy:
Chantsoulis, Marzena
Półrola, Paweł
Góral-Półrola, Jolanta
Hajdukiewicz, Anna
Kropotov, Juri D.
Pachalska, Maria
Powiązania:
https://bibliotekanauki.pl/articles/989909.pdf
Data publikacji:
2017
Wydawca:
Instytut Medycyny Wsi
Tematy:
cognitive control
emotional control
relative beta training
rtms
microgenetic theory
Opis:
Objective. The study aimed to evaluate the application of ERPs neuromarkers for the assessment and treatment of a patient with chronic crossed aphasia after severe TBI and a long-term coma. Case report. An ambidextrous female patient, aged 29, suffered from posttraumatic chronic crossed aphasia, severe TBI and a prolonged coma after a car accident. The patient took part in two differentiated rehabilitation programmes of neurotherapy included 20 sessions of relative beta training and 20 sessions of rTMS; both programmes were combined with behavioural training. The patient was tested 3 times: before the experiment, after completion of programme A, and after completion of programme B. Results. In the 1st recording, the neuromarker of aphasia was found – an excess of the P2 wave over the left temporal area. There was a cognitive control deficit – an excess of omission errors and an increase of RT variability – all indexes of sporadic ADHD. In the 2nd recording, slight improvements in cognitive control, and language functions were found. In the 3rd recording, after the rTMS sessions most of her cognitive dysfunctions had been resolved, including language functions. It should be stressed that the activation (especially the increase in the ERP potential of the right side over the frontal lobe) was found. The neuromarker of aphasia did not change, only the location had slightly moved frontally. Conclusions. The application of ERP neuromarkers assists in the diagnosis, treatment, and academic success of an ambidextrous patient with chronic posttraumatic aphasia and sporadic ADHD. ERPs can be used to assess the functional brain changes induced by neurotherapeutical programmes.
Źródło:
Annals of Agricultural and Environmental Medicine; 2017, 24, 1
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparative Simulation of the Production Flow with the Implementation of Kanban and DBR
Autorzy:
Tomaszewska, Klaudia
Powiązania:
https://bibliotekanauki.pl/articles/24200493.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
modeling
control optimization
real-time control
process control
lean manufacturing
theory of constraints
Opis:
Currently, we live in a culture of being overly busy, but this does not translate into efficiency, speed of implementation of the actions taken. Enterprises are constantly looking for methods and tools to make them more efficient. The most popular method of production management is Lean Manufacturing, less known is Theory of Constraints. This work is a continuation of the research on the comparison of these methods with apply a computer simulation, which the analyzed production process in the selected enterprise, after 24 hours and week. An attempt was made to simplify the comparison of the methods based on the obtained simulation in terms of costs. In analyzed case, more advantageous solution is to use the DBR method. To produce various orders that do not require 100% production on the bottleneck position, the use of Kanban is a frequent practice as it provides greater flexibility in order execution.
Źródło:
Management and Production Engineering Review; 2023, 14, 2; 79--87
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Indirect control and power
Autorzy:
Bertini, C.
Mercik, J.
Stach, I.
Powiązania:
https://bibliotekanauki.pl/articles/406544.pdf
Data publikacji:
2016
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
game theory
indirect control
corporations
power indices
Opis:
To determine who has the power within a stock corporate company can be a quite complex prob-lem, especially when control is achieved through alliances between shareholders. This problem arises especially in cases of indirect control of corporations, that is, in situations involving shareholders and companies with cross-shareholdings. The first to solve the problem of measuring power in the case of indirect share control were Gianfranco Gambarelli and Guillermo Owen in [10]. In the following years, numerous other models were introduced. In this paper, we critically examine the models of: Gambarelli and Owen, Denti and Prati, Crama and Leruth, Karos and Peters, as well as Mercik and Lobos, taking into account two well-known, illustrative examples, one with an acyclic corporate structure and the other with a cyclic structure.
Źródło:
Operations Research and Decisions; 2016, 26, 2; 7-30
2081-8858
2391-6060
Pojawia się w:
Operations Research and Decisions
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Model-free reconfiguration mechanism for fault tolerance
Autorzy:
Jain, T.
Yamé, J. J.
Sauter, D.
Powiązania:
https://bibliotekanauki.pl/articles/331372.pdf
Data publikacji:
2012
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
sterowanie tolerujące uszkodzenia
sterowanie ślizgowe
fault tolerant control
control performance
behavioral theory
switching control
Opis:
The problem of fault tolerant control is studied from the behavioral point of view. In this mathematical framework, the concept of interconnection among the variables describing the system is a key point. The problem is that the behavior we intend to control is not known. Therefore, we are interested in designing a fault accommodation scheme for an unknown behavior through an appropriate behavioral interconnection. Here we deal simply with the trajectories that are generated by the system in real time. These trajectories determine the behavior of a system in various (faulty/healthy) modes. Based on the desired interconnected behavior, only the trajectories that obey certain laws are selected. These laws, representing the desired behavior, can indeed be achieved by a regular interconnection. Thus, when the trajectories do not belong to a certain desired behavior, it is considered to be due to the occurrence of a fault in the system. The vantage point is that the fault tolerant control problem now becomes completely a model-free scheme. Moreover, no explicit fault diagnosis module is required in our approach. The proposed fault tolerance mechanism is illustrated on an aircraft during the landing phase.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2012, 22, 1; 125-137
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Przestępczość kobiet na tle wybranych socjologicznych koncepcji przestępczości
Autorzy:
Brzezińska, Joanna
Powiązania:
https://bibliotekanauki.pl/articles/1339818.pdf
Data publikacji:
2020-12-02
Wydawca:
Uczelnia Łazarskiego. Oficyna Wydawnicza
Tematy:
przestępczość kobiet
teoria więzi społecznej
teoria równowagi kontroli
teoria anomii
teoria naznaczenia społecznego
female crime
theory of social bonds
theory of balance of control
theory of anomie
theory of social stigmatisation
Opis:
Celem opracowania jest wskazanie powiązań między wybranymi socjologicznymi teoriami przestępczości a zarysowanym na ich tle zjawiskiem przestępczości kobiet. Wstępna charakterystyka wskazanej kategorii teorii umożliwia w rezultacie określenie tych aspektów, które na tle ogólnych założeń wyznaczają ich relacje ze szczególną kategorią sprawców: kobiet. Ze względu na dążenie do skonfrontowania poczynionych rozważań teoretycznych z ustaleniami natury empirycznej, w opracowaniu wskazano wybrane kategorie przestępstw popełnionych przez kobiety w Polsce w okresie obowiązywania kodeksu karnego z 1997 r. Takie ujęcie pozwala na ustalenie, czy założenia analizowanych koncepcji teoretycznych znalazły potwierdzenie w przedstawionych badaniach, a także czy konieczne jest ich ewentualne przemodelowanie. Ponadto zasadniczym założeniem pracy jest także wykazanie, czy jednoczynnikowe teorie przestępczości w konfrontacji ze zjawiskiem przestępczości kobiet są w stanie kompleksowo określić jego istotę, czy też niezbędne jest sięgnięcie do teorii złożonych, by w pełni zrozumieć analizowany problem. Struktura opracowania wpłynęła na zastosowanie dwóch metod badawczych: dogmatycznej oraz empirycznej.
The aim of the study is to indicate the links between selected sociological theories of crime and the phenomenon of women’s crime. The initial characteristics of the indicated category of theories makes it possible to define further those aspects which, in the context of general assumptions, determine their relations with a particular category of perpetrators: women. In attempt to confront theoretical considerations with the findings of empirical nature, the study indicates selected categories of crimes committed by women in Poland when the Criminal Code of 1997 was in force. Such an approach allows the final determination whether the assumptions of the analysed theoretical concepts have been confirmed by the presented research, or whether their potential remodelling is necessary. The structure of the study has determined the application of two research methods: dogmatic and empirical.
Źródło:
Ius Novum; 2020, 14, 1; 35-58
1897-5577
Pojawia się w:
Ius Novum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimal and game control algorithms of a ship in collision situations at sea
Autorzy:
Lisowski, J
Powiązania:
https://bibliotekanauki.pl/articles/205923.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
marine navigation
safety at sea
safe ship control
optimal control
game theory
Opis:
This paper presents an application of selected methods of optimal and game control theory to determine own ship safe trajectory when passing other ships encountered in good and in restricted visibility at sea. Five algorithms for determining safe trajectory of the own ship in a collision risk situation: non-cooperative positional game, non-cooperative matrix game, cooperative positional game, dynamic optimization, and kinematic optimization are compared. The analysis is illustrated with examples of computer simulations of the algorithms to determine safe and optimal own ship trajectories in the real navigational situations at sea.
Źródło:
Control and Cybernetics; 2013, 42, 4; 773-792
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A study on fractal dimensions and convergence in fuzzy control systems
Autorzy:
Schuster, A.
Blackburn, W.
Prieto, M.S.
Powiązania:
https://bibliotekanauki.pl/articles/309243.pdf
Data publikacji:
2002
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
fuzzy control systems
chaos theory
convergence
fractal dimension
Opis:
This paper addresses a problem in the area of intelligent, knowledge-based systems, namely the generation of knowledge, by presenting a proposal for the automation of this task. The proposed approach is limited however by focusing on fuzzy control systems (FCSs). Results obtained from different experimental investigations indicate the potential of the approach.
Źródło:
Journal of Telecommunications and Information Technology; 2002, 3; 30-36
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On the Design of the TCP/AQM Traffic Flow Control Mechanisms
Autorzy:
Karpowicz, M. P.
Powiązania:
https://bibliotekanauki.pl/articles/307606.pdf
Data publikacji:
2012
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
game theory
network security
TCP/AQM
traffic flow control
Opis:
Several aspects of the TCP/AQM system design are discussed that may affect performance of the network. Namely, due to decentralized structure of the network traffic flow control system in which traffic rate control tasks are delegated to autonomous agents, it may be possible for the agents to profitably re-engineer the TCP congestion control algorithm at the cost of the overall performance of the network. In this paper it is shown how the commonly applied TCP/AQM design procedures may give rise to mechanisms that are prone to attacks discreetly moving the network traffic flow away from the desired operating point. Furthermore, a short discussion is presented concerning the countermeasures that can be taken to reduce these effects.
Źródło:
Journal of Telecommunications and Information Technology; 2012, 4; 31-37
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multi-criteria optimisation of multi-stage positional game of vessels
Autorzy:
Lisowski, Józef
Powiązania:
https://bibliotekanauki.pl/articles/259750.pdf
Data publikacji:
2020
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
maritime transport
optimisation
game theory
ship control
computer simulation
Opis:
The paper presents a mathematical model of a positional game of the safe control of a vessel in collision situations at sea, containing a description of control, state variables and state constraints as well as sets of acceptable ship strategies, as a multi-criteria optimisation task. The three possible tasks of multi-criteria optimisation were formulated in the form of non-cooperative and cooperative multi-stage positional games as well as optimal non-game controls. The multicriteria control algorithms corresponding to these tasks were subjected to computer simulation in Matlab/Simulink software based on the example of the real navigational situation of the passing of one’s own vessel with eighteen objects encountered in the North Sea.
Źródło:
Polish Maritime Research; 2020, 1; 46-52
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Outsorcing w procesie restrukturyzacji przedsiębiorstwa w świetle teorii kosztów transformacyjnych
Outsourcing in the Process of Restructuring Enterprises in Light of the Transaction Cost Theory
Autorzy:
Urbanek, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/574310.pdf
Data publikacji:
2011-04-30
Wydawca:
Szkoła Główna Handlowa w Warszawie. Kolegium Analiz Ekonomicznych
Tematy:
transaction cost theory
outsourcing
Coase theorem
operational control system
Opis:
Using the example of an enterprise from the energy sector, the author demonstrates how companies restructure their assets through outsourcing. In the case of the analyzed energy-sector enterprise, the restructuring process was prepared conceptually, organizationally and technically with the use of an operational control system - in line with the transaction cost theory. Under the Coase theorem, the selection of one of two coordination mechanisms - hierarchical coordination or market coordination - is determined by factors such as asset specificity, transaction uncertainty and transaction frequency. An evaluation of the course and results of the process confirms many of the theoretical assumptions, the author says. Due to the specific features of energy-sector companies and the characteristics of business transactions made in such companies, key resources remain within the enterprise, while organizational units carrying out peripheral tasks not related to the company’s core business can be outsourced and moved outside the company’s structure. In the studied enterprise, a hybrid solution was used in formal and legal terms, Urbanek says, based on maintaining capital/ownership ties between the enterprise and businesses spun off from it. The author highlights the role of the operational control system as an instrument supporting decentralization and restructuring processes leading to outsourcing. Without the use of an operational control system, it would be impossible to overcome barriers typically encountered in such processes - mainly those created by people - and to carry out such far-reaching changes within such a short time, Urbanek concludes.
Źródło:
Gospodarka Narodowa. The Polish Journal of Economics; 2011, 247, 4; 69-84
2300-5238
Pojawia się w:
Gospodarka Narodowa. The Polish Journal of Economics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On an optimal control problem for a quasilinear parabolic equation
Autorzy:
Farag, S.
Farag, M.
Powiązania:
https://bibliotekanauki.pl/articles/1208213.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
existence theory
parabolic equations
penalty function methods
optimal control
Opis:
An optimal control problem governed by a quasilinear parabolic equation with additional constraints is investigated. The optimal control problem is converted to an optimization problem which is solved using a penalty function technique. The existence and uniqueness theorems are investigated. The derivation of formulae for the gradient of the modified function is explainedby solving the adjoint problem.
Źródło:
Applicationes Mathematicae; 2000, 27, 2; 239-250
1233-7234
Pojawia się w:
Applicationes Mathematicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The branch-and-bound method and genetic algorithm in avoidance of ships collisions in fuzzy environment
Autorzy:
Mohamed-Seghir, Mostefa
Powiązania:
https://bibliotekanauki.pl/articles/259091.pdf
Data publikacji:
2012
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
safe ship control
optimal control
safe trajectories
branch and bound method
genetic algorithm
ship control
fuzzy set theory
Opis:
Marine navigation consists in continuous observation of the situation at sea, determination the anti-collision manoeuvre. So it necessary to determine ship safe trajectory as a sequence of ship course changing manoeuvres. Each manoeuvre is undertaken on the basis of information obtained from the anti-collision system ARPA. This paper describes a method of safe ship control in the collision situation in a fuzzy environment based on a branch and bound method and a genetic algorithm. The optimal safe ship trajectory in a collision situation is presented as multistage decision-making process.
Źródło:
Polish Maritime Research; 2012, S 1; 45-49
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Approach for the development of heuristic process planning tool for sequencing NC machining operations
Autorzy:
Berger, U.
Kretschmann, R
Arnold, K P
Minhas, S
Powiązania:
https://bibliotekanauki.pl/articles/1395585.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Promocji Wiedzy
Tematy:
machining process planning
NC (numerical control)
graph theory
heuristic algorithm
Opis:
This chapter deals with the process planning for sequencing NC (numerical control) machining operations. This task of selecting and ordering of machining operations is still done manually in principle. In order to overcome this problem, an approach for enabling the automatic preparation of work plans with methods known from the graph theory is introduced in this chapter. Therefore a work plan is mapped into a directed graph in a mathematically defined way. Based on that, it is possible to use algorithms to find the shortest path and a Hamiltonian path inside this directed graph as optimal sequenced solution under given requirements. Thus, the work plan is structured and re-ordered. Finally the corresponding NC machining code will be generated and distributed to the machinery.
Źródło:
Applied Computer Science; 2008, 4, 2; 17-41
1895-3735
Pojawia się w:
Applied Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical Analysis and Systems Theory
Autorzy:
Campbell, S. L.
Powiązania:
https://bibliotekanauki.pl/articles/908059.pdf
Data publikacji:
2001
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
analiza numeryczna
sterowanie
teoria systemów
numerical analysis
control
systems theory
Opis:
The area of numerical analysis interacts with the area of control and systems theory in a number of ways, some of which are widely recognized and some of which are not fully appreciated or understood. This paper will briefly discuss some of these areas of interaction and place the papers in this volume in context.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2001, 11, 5; 1025-1033
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The linear programming approach to deterministic optimal control problems
Autorzy:
Hernández-Hernández, Daniel
Hernández-Lerma, Onésimo
Taksar, Michael
Powiązania:
https://bibliotekanauki.pl/articles/1339290.pdf
Data publikacji:
1996
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
linear programming (in infinite-dimensional spaces)
duality theory
optimal control
Opis:
Given a deterministic optimal control problem (OCP) with value function, say $J^*$, we introduce a linear program $(P)$ and its dual $(P^*)$ whose values satisfy $\sup(P^*) \leq\inf(P)\leq J^*(t,x)$. Then we give conditions under which (i) there is no duality gap
Źródło:
Applicationes Mathematicae; 1996-1997, 24, 1; 17-33
1233-7234
Pojawia się w:
Applicationes Mathematicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Minimum variance control of discrete-time and continuous-time LTI MIMO systems - a new unified framework
Autorzy:
Hunek, W. P.
Latawiec, K. J.
Powiązania:
https://bibliotekanauki.pl/articles/969698.pdf
Data publikacji:
2009
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
minimum variance control
continuous-time minimum variance control
theory of emulation
multivariable systems
multivariable zeros
Opis:
This paper presents a new uniform framework for solving the problem of minimum variance control of both discrete-time and continuous-time linear time-invariant multi-input multi-output systems described by general input-output models. Rather surprisingly, it is shown that the continuous-time case can be analyzed and synthesized without the necessity of involving the celebrated (and rather complex) theory of output predictor emulation, so that quite similar, simple solution is obtained like for the well-known discrete-time case.
Źródło:
Control and Cybernetics; 2009, 38, 3; 609-624
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimal design of cylindrical shells
Autorzy:
Nestler, Peter
Schmidt, Werner
Powiązania:
https://bibliotekanauki.pl/articles/729263.pdf
Data publikacji:
2010
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
linear elasticity
shell theory
cylindrical tube
optimal control
shape optimization
Opis:
The present paper studies an optimization problem of dynamically loaded cylindrical tubes. This is a problem of linear elasticity theory. As we search for the optimal thickness of the tube which minimizes the displacement under forces, this is a problem of shape optimization. The mathematical model is given by a differential equation (ODE and PDE, respectively); the mechanical problem is described as an optimal control problem. We consider both the stationary (time independent) and the transient (time dependent) case. P. Nestler derives the model-equations from the Mindlin and Reissner hypotheses. Then, necessary optimality conditions for the optimal control problem are given. Numerical solutions are obtained by FEM, numerical examples are presented.
Źródło:
Discussiones Mathematicae, Differential Inclusions, Control and Optimization; 2010, 30, 2; 253-267
1509-9407
Pojawia się w:
Discussiones Mathematicae, Differential Inclusions, Control and Optimization
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bureaucracy and Culture: Toward Two-Factor Theory of Organizational Control
Autorzy:
Olejniczak, Tomasz
Yasuyuki, Kishi
Powiązania:
https://bibliotekanauki.pl/articles/417298.pdf
Data publikacji:
2014
Wydawca:
Akademia Leona Koźmińskiego w Warszawie
Tematy:
organization theory
control and coordination mechanisms bureaucracy
culture
business history
Opis:
Purpose: In this article we focus on the issue of organizational control in its bureaucratic and cultural forms. Methodology: This research uses exploratory case study analysis of Matsushita Konosuke’s management style of in the early years of the Panasonic Corporation. Findings: First of all, we fi nd that despite the impressive body of knowledge accumulated over the years, some questions concerning the relationship between two modes of control and their changes over time still remain unanswered. As a result of case study analysis we put forward an original model illustrating the relationship between bureaucratic and cultural modes of control over stages of the organization life cycle. Research implications and limitations: Implications of the study consist of prescriptions on how to successfully exert control by combining formal and informal measures. Main limitations of the study are related to its generalizability. Originality: Originality of the study results both from putting forward a new theoretical models and using original historical case of Panasonic Corporation.
Źródło:
Management and Business Administration. Central Europe; 2014, 22, 1; 70-87
2084-3356
Pojawia się w:
Management and Business Administration. Central Europe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Design a robust quantitative feedback theory controller for cyber-physical systems: ship course control problem
Autorzy:
Abadi, Ali Soltani Sharif
Hosseinabadi, Pooyan Alinaghi
Ordys, Andrew
Grimble, Michael
Powiązania:
https://bibliotekanauki.pl/articles/2175111.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
quantitative feedback theory
Denial-of-Service
robust control
cyber-physical systems
Opis:
One of the most critical problems in all practical systems is the presence of uncertainties, internal and external disturbances, as well as disturbing noise, which makes the control of the system a challenging task. Another challenge with the physical systems is the possibility of cyber-attacks that the system’s cyber security against them is a critical issue. The systems related to oil and gas industries may also be subjected to cyber-attacks. The subsets of these industries can be mentioned to the oil and gas transmission industry, where ships have a critical role. This paper uses the Quantitative Feedback Theory (QFT) method to design a robust controller for the ship course system, aiming towards desired trajectory tracking. The proposed controller is robust against all uncertainties, internal and external disturbances, noise, and various possible Deception, Stealth, and Denial-of-Service (DOS) attacks. The robust controller for the ship system is designed using the QFT method and the QFTCT toolbox in MATLAB software. Numerical simulations are performed in MATLAB/Simulink for two case studies with disturbances and attacks involving intermittent sinusoidal and random behavior to demonstrate the proposed controller.
Źródło:
Archives of Control Sciences; 2022, 32, 3; 589--605
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
FINANCIAL CONTROL AND THE EMPLOYER OF LAST RESORT
Autorzy:
TOPOROWSKI, JAN
Powiązania:
https://bibliotekanauki.pl/articles/1036347.pdf
Data publikacji:
2019-12-30
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
Job Guarantee
full employment
Michał Kalecki
financial control
Modern Money Theory
Opis:
This paper examines the policy that has been suggested to resolve involuntary unemployment by having the government employ any persons who register as unemployed. This policy is compared to the full employment proposal of Michał Kalecki. Kalecki’s proposals also contained a strategy for financing full employment. Like the Employer of Last Resort proposal, Kalecki’s strategy allows employment policies to be examined from financial control, rather than the usual approaches of examining the impact of employment policy on labour productivity, or inflation, although both come into the analysis. The paper, therefore, outlines the proposal for an employer of last resort, and the proposed financing of that policy. A second part looks at Kalecki’s proposals for full employment and its financing. A third part then considers the impact of the employer of last resort policy on financial stability.
Źródło:
Society Register; 2019, 3, 2; 39-48
2544-5502
Pojawia się w:
Society Register
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Computational intelligence in marine control engineering education
Autorzy:
Lisowski, Józef
Powiązania:
https://bibliotekanauki.pl/articles/1551899.pdf
Data publikacji:
2021
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
ship control
marine engineering curriculum
computational intelligence
game theory
computer simulation
Opis:
This paper presents a new approach to the existing training of marine control engineering professionals using artificial intelligence. We use optimisation strategies, neural networks and game theory to support optimal, safe ship control by applying the latest scientific achievements to the current process of educating students as future marine officers. Recent advancements in shipbuilding, equipment for robotised ships, the high quality of shipboard game plans, the cost of overhauling, dependability, the fixing of the shipboard equipment and the requesting of the safe shipping and environmental protection, requires constant information on recent equipment and programming for computational intelligence by marine officers. We carry out an analysis to determine which methods of artificial intelligence can allow us to eliminate human subjectivity and uncertainty from real navigational situations involving manoeuvring decisions made by marine officers. Trainees learn by using computer simulation methods to calculate the optimal safe traverse of the ship in the event of a possible collision with other ships, which are mapped using neural networks that take into consideration the subjectivity of the navigator. The game-optimal safe trajectory for the ship also considers the uncertainty in the navigational situation, which is measured in terms of the risk of collision. The use of artificial intelligence methods in the final stage of training on ship automation can improve the practical education of marine officers and allow for safer and more effective ship operation.
Źródło:
Polish Maritime Research; 2021, 1; 163-172
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Factors affecting decisions to have a second child: exploiting the theory of planned behaviour
Autorzy:
Lukšík, Ivan
Bianchi, Gabriel
Popper, Miroslav
Baboš, Pavol
Powiązania:
https://bibliotekanauki.pl/articles/2128280.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
reproductive decision-making
planned behaviour theory
attitudes
social norms
perceived control
Opis:
The objective of this study is to explore factors that affect the decisions single-child parents make when considering whether to have a second child applying the psychological theory of planned behaviour (TPB). Quantitative survey data from a sample of parents with a single child selected from a Slovak representative sample was used to perform regression analysis assessing effects of attitudes, subjective norms and perceived control on intention to have a second child within the next three years. Results largely confirm the model captured in TPB. All three components of the TPB have a significant effect on intentions to have a second child. A particular set of liberal and conservative attitudes facilitate plans to have a second child. The strongest predictors, however, are the perceived pressure from the social environment (subjective norm) and subjective desire to have a child (perceived control). The study concludes that, along with demographic and sociological variables, psychological factors play a significant role in decision-making processes concerning reproductive planning.
Źródło:
Polish Psychological Bulletin; 2016, 4; 421-430
0079-2993
Pojawia się w:
Polish Psychological Bulletin
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A robust model free controller for a class of SISO nonaffine nonlinear systems: Application to an electropneumatic actuator
Autorzy:
Boubakir, Ahsene
Labiod, Salim
Boudjema, Fares
Powiązania:
https://bibliotekanauki.pl/articles/229193.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
dynamic inversion control
model free controller
nonaffine nonlinear systems
singular perturbation theory
Opis:
This paper presents a robust model free controller (RMFC) for a class of uncertain continuous-time single-input single-output (SISO) minimum-phase nonaffine-in-control systems. Firstly, the existence of an unknown dynamic inversion controller that can achieve control objectives is demonstrated. Afterwards, a fast approximator is designed to estimate as best as possible this dynamic inversion controller. The proposed robust model free controller is an equivalent realization of the designed fast approximator. The perturbation theory and Tikhonov’s theorem are used to analyze the stability of the overall closed-loop system. The performance of the developped controller are verified experimentally in the position control of a pneumatic actuator system.
Źródło:
Archives of Control Sciences; 2019, 29, 3; 437-458
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Exploring the link between a theory of mind and executive functions in preschool children
Autorzy:
Memisevic, Haris
Biscevic, Inga
Pasalic, Arnela
Powiązania:
https://bibliotekanauki.pl/articles/2137704.pdf
Data publikacji:
2018-03-19
Wydawca:
Fundacja Edukacji Medycznej, Promocji Zdrowia, Sztuki i Kultury Ars Medica
Tematy:
theory of mind
preschool children
executive functions
inhibitory control
age and gender effects
Opis:
Acquisition of the theory of mind (TOM) is a very important milestone in the development of preschool children. TOM is especially important for the development of children’s social skills. The goal of the present study was to examine the effects of age, gender and executive functions (EF) on the acquisition of TOM. The sample in this study consisted of 116 preschool children aged 36-72 months (mean age 58.8 months, SD= 9.5 months). In relation to the child’s gender, there were 56 girls (48.3%) and 60 boys (51.7%). The Sally Anne test- a task purporting to measure TOM, was used as a dependant variable and age, gender, and EF measures were used as the predictors. Logistic regression was used as a method to determine the effects of predictors on TOM. The results of this study indicated that success on the TOM test can best be predicted by the inhibitory control, followed by verbal fluency and child’s age. The gender of the child was not associated with TOM acquisition. The overall model explained between 27% and 38% of the variance in the TOM scores. Inhibitory control is the executive function that had the greatest predictive power for the results on the theory of the mind task. The findings of this study can help early interventionists in the modification of existing preschool curricula, so that they include more activities that would foster the development of the theory of mind in preschool children. Future studies should aim to find a better model of theory of mind predictors by examining the effects of other executive function constructs, such as working memory.
Źródło:
Acta Neuropsychologica; 2018, 16(1); 17-26
1730-7503
2084-4298
Pojawia się w:
Acta Neuropsychologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wzrost efektywności przepływu produkcji poprzez zmianę systemu planowania i sterowania produkcją
Increasing of production efficiency through change the system of production planning and control
Autorzy:
Żywicki, K.
Trojanowska, J.
Powiązania:
https://bibliotekanauki.pl/articles/269447.pdf
Data publikacji:
2013
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
planowanie
sterowanie
system ssący
teoria ograniczeń
produkcja
planning
control
theory of constraints
production
Opis:
Artykuł dotyczy wpływu metod sterowania produkcją na efektywność przepływu produkcji. Przedstawione rozwiązanie dotyczy opracowanego i wdrożonego w przedsiębiorstwie produkcyjnym systemu, uwzględniającego specyfikę produkcyjną firmy związaną ze strukturą zamówień i uwarunkowaniami wewnętrznymi. Podstawą opracowania rozwiązań tworzących system było wykorzystanie różnych dostępnych metod sterowania produkcją. Niniejszy artykuł jest związany z realizacją projektu celowego dotyczącego opracowania i wdrożenia do praktyki przemysłowej sytemu sterowania produkcją. W wyniku przyjętych rozwiązań uzyskano wzrost efektywności przepływu produkcji poprzez zmniejszenie czasu przejścia materiału oraz zapasów międzyoperacyjnych w procesach wytwórczych.
The article concerns the impact of methods of production flow control to the efficiency of production flow. Described solution shows developed and implemented system taking into account the specificity of the system of production orders related to the structure and internal circumstances.The basis for the development of solutions to create the system was to use different available methods to control production. Paper shown material related to the implementation of a project of development and implementation production control system dedicated to DOMEX Ltd. The main result of presented solutions is an increase the efficiency of the production flow by reducing lead time and work in progress in manufacturing processes.
Źródło:
Inżynieria Maszyn; 2013, R. 18, z. 1; 71-83
1426-708X
Pojawia się w:
Inżynieria Maszyn
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multi-criteria multi-stage game optimization
Wielokryterialna optymalizacja gry wieloetapowej
Autorzy:
Lisowski, Józef
Powiązania:
https://bibliotekanauki.pl/articles/2176247.pdf
Data publikacji:
2022
Wydawca:
Uniwersytet Technologiczno-Humanistyczny im. Kazimierza Pułaskiego w Radomiu
Tematy:
optimization
control engineering
game theory
computer simulation
optymalizacja
automatyka
teoria gier
symulacja komputerowa
Opis:
The article presents a mathematical model of a multi-stage game of the process of safe control of a transport object in possible collision situations with other encountered objects, containing a description of state variables, state and control constraints, and sets of permissible object strategies. Multi-criteria optimization tasks were formulated in the form of positional and matrix games under the conditions of playing non-cooperative and cooperative control as well as non-game optimal control. The multi-criteria control algorithms corresponding to these tasks were computer simulated in Matlab / Simulink on the example of a real situation.
W artykule przedstawiono model matematyczny wieloetapowej gry procesu bezpiecznego sterowania obiektem transportowym w możliwych sytuacjach kolizyjnych z innymi spotkanymi obiektami, zawierający opis zmiennych stanu, ograniczeń stanu i sterowania oraz zbiory dopuszczalnych strategii obiektów. Sformułowano wielokryterialne zadania optymalizacyjne w postaci gry pozycyjnej i macierzowej, w warunkach rozgrywającego sterowania niekooperacyjnego i kooperacyjnego oraz nierozgrywającego sterowania optymalnego. Algorytmy sterowania wielokryterialnego odpowiadające tym zadaniom poddano symulacji komputerowej w programie Matlab/Simulink na przykładzie rzeczywistej sytuacji.
Źródło:
Journal of Automation, Electronics and Electrical Engineering; 2022, 4, 1; 37--42
2658-2058
2719-2954
Pojawia się w:
Journal of Automation, Electronics and Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The User-Preferred Optimal Flight Parameters in an Active Navigational System in a Multi-Alternative Situation
Preferencje pilota-operatora przy optymalnym wyborze ze zbioru wielu alternatyw parametrów lotu w aktywnym systemie nawigacyjnym
Autorzy:
Goncharenko, Andriy Viktorovich
Powiązania:
https://bibliotekanauki.pl/articles/36413966.pdf
Data publikacji:
2020
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Lotnictwa
Tematy:
control
navigation
decision making
preferences
entropy theory
sterowanie
nawigacja
decyzyjność
preferencje
teoria entropii
Opis:
The goal of this paper is to investigate the influence of the objectively existing effectiveness functions of an aircraft control system upon the control and managerial decision making process in the framework of the subjective entropy maximum principle. The subjective analysis theory entropy paradigm makes it possible to consider the aircraft control system based upon personal preferences as an active system governed by an individual (active element of the control system) with the help of her/his individual subjective preferences optimal distributions obtained in conditions of operational multi-alternativeness and those operational alternatives the active system active element’s individual subjective preferences uncertainty. The described approach takes into account the simple two-alternative operational situation in regards with the objectively existing effectiveness functions, related to the aircraft control system, in the view of a controlled parameter and a combination of it with its rate as the ratio. The obtained expressions for the objective functional extremal functions of the effectiveness and preferences, as well as the subjective entropy of the alternatives preferences, illustrated in diagrams visualize the situation and allow taking a good choice. The ideas of the required proper governing, managing, and control methods choice optimization with respect to only 2 alternative objective effectiveness functions arguments might be simple; nevertheless, increasing the number of parameters and further complication of the problem setting will not change the principle of the problem solution.
Celem tej publikacji jest zbadanie wpływu obiektywnie istniejących funkcji skuteczności systemu kontroli statku powietrznego na proces kontroli i podejmowania decyzji zarządczych w ramach subiektywnej zasady maksymalnej entropii. Paradygmat entropii teorii subiektywnej umożliwia rozważenie systemu sterowania samolotem opartego na osobistych preferencjach jako systemu aktywnego zarządzanego przez jednostkę (aktywny element systemu sterowania) za pomocą jej indywidualnych preferencji subiektywnych, optymalnych rozkładów uzyskanych w warunkach operacyjnej multi-alternatywności i operacyjnych alternatyw niepewności subiektywnych indywidualnych preferencji elementu aktywnego systemu. Opisane podejście uwzględnia proste dwie alternatywne sytuacje operacyjne w odniesieniu do obiektywnie istniejących funkcji efektywności związanych z systemem sterowania statkiem powietrznym w świetle kontrolowanego parametru i jego kombinacji Uzyskane wyrażenia dla obiektywnych funkcjonalnych ekstremalnych funkcji skuteczności i preferencji, a także subiektywna entropia preferencji alternatyw, zilustrowane na schematach, pokazują sytuację i pozwalają na dokonanie dobrego wyboru. Pomysły dotyczące wymaganej właściwej optymalizacji metod zarządzania i kontroli w odniesieniu do tylko dwóch alternatywnych argumentów funkcji efektywności celu mogą być proste – niemniej jednak zwiększenie liczby parametrów i dalsze komplikowanie problemu nie zmieni zasady rozwiązania.
Źródło:
Transactions on Aerospace Research; 2020, 2 (259); 1-12
0509-6669
2545-2835
Pojawia się w:
Transactions on Aerospace Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evolutionary stability of discriminating social norms
Autorzy:
Abramczuk, Katarzyna
Powiązania:
https://bibliotekanauki.pl/articles/1198700.pdf
Data publikacji:
2016
Wydawca:
Akademia Leona Koźmińskiego w Warszawie
Tematy:
game theory
third-party sanctions
social norms
social control
discrimination
privilege assignment
social inequalities
Opis:
The paper presents an evolutionary model illustrating the dynamics that give rise to discriminatory social norms i.e. such rules of behaviour that fulfil two conditions: (1) they treat differently actors having the same abilities and technical options, but differing in some arbitrary sense (2) they are supported by socially enforced sanctions. In the presented model both discrimination and social norms are necessary to solve a coordination problem that arises when the situation requires different actors to perform different tasks. The properties of behavioural rules relying on discrimination and leading to various degrees of inequality are analysed. It is demonstrated that in general norms ensuring equal payoffs are easier to stabilize, but unfair norms can also be stable.
Źródło:
Decyzje; 2016, 26; 27-57
1733-0092
2391-761X
Pojawia się w:
Decyzje
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Duality theory for state-constrained control problems governed by a first order PDE system
Autorzy:
Pickenhain, S.
Powiązania:
https://bibliotekanauki.pl/articles/205959.pdf
Data publikacji:
2002
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
teoria dwoistości
control problems with multiple integrals
duality theory
necessary and sufficient optimality conditions
Opis:
In this paper we prove weak and strong duality results for optimal control problems with multiple integrals, first-order partial differential equations and state constraints. We formulate conditions under which the sequence of canonical variables [y^epsilon] in the [epsilon]-maximum principle, proved in Pickenhain and Wagner (2000), form a maximizing sequence in the dual problem.
Źródło:
Control and Cybernetics; 2002, 31, 3; 833-845
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Method of cooperative formation control for underactuated USVs based on nonlinear backstepping and cascade system theory
Autorzy:
Dong, Zaopeng
Liu, Yang
Wang, Hao
Qin, Tao
Powiązania:
https://bibliotekanauki.pl/articles/1573634.pdf
Data publikacji:
2021
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
unmanned surface vehicle (USV)
cooperative formation control
underactuated system
nonlinear backstepping
cascade system theory
Opis:
This paper presents a method for the cooperative formation control of a group of underactuated USVs. The problem of formation control is first converted to one of stabilisation control of the tracking errors of the follower USVs using system state transformation design. The followers must keep a fixed distance from the leader USV and a specific heading angle in order to maintain a certain type of formation. A global differential homeomorphism transformation is then designed to create a tracking error system for the follower USVs, in order to simplify the description of the control system. This makes the complex formation control system easy to analyse, and allows it to be decomposed into a cascaded system. In addition, several intermediate state variables and virtual control laws are designed based on nonlinear backstepping, and actual control algorithms for the follower USVs to control the surge force and yaw moment are presented. A global system that can ensure uniform asymptotic stability of the USVs’ cooperative formation control is achieved by combining Lyapunov stability theory and cascade system theory. Finally, several simulation experiments are carried out to verify the validity, stability and reliability of our cooperative formation control method.
Źródło:
Polish Maritime Research; 2021, 1; 149-162
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Prediction of aircraft lost of control in the flight by continuation, bifurcation, and catastrophe theory methods
Autorzy:
Sibilski, K.
Kowalski, M.
Powiązania:
https://bibliotekanauki.pl/articles/246470.pdf
Data publikacji:
2016
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
nonlinear dynamics of flight
lost of control in the flight
catastrophe theory
bifurcation
continuation method
Opis:
Lost of Control in Flight (LOC-I) is ordinarily associated with flight outside of the normal flight envelope, with nonlinear behaviours, and with an inability of the pilot to control the aircraft. These results provide a means for analysing accident data to establish whether or not the accident should be classified as LOC-I. Moreover, they help identify when the initial upset occurred, and when control was lost. The analysis also suggests which variables were involved, thereby providing clues as to the underlying mechanism of upset. However, it does not provide direct links to the flight mechanics of the aircraft, so it cannot be used proactively to identify weaknesses or limitations in the aircraft or its control systems. Moreover, it does not explain how departures from controlled flight occur. The complexity of the disaster aetiology stems from both the scale and coupling of the systems (not only the physical aircraft systems but also the organizational systems that support the operation). This complexity creates a pattern of disaster that evolves or it is precipitated through a series of several small failures. The cusp catastrophe model facilitates the mapping of Reason’s latent failure model, providing a descriptive and predictive illustration of the emergence of latent conditions under the trigger of situational factors. The risk of an accident increases as the situational and systematic factors combine to create an inherent instability resulting in the catastrophic event.
Źródło:
Journal of KONES; 2016, 23, 4; 451-460
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The structure and regulative function of the cognitive styles: a new theory
Autorzy:
Nosal, Czeslaw S.
Powiązania:
https://bibliotekanauki.pl/articles/430568.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
cognitive styles
cognitive styles theory
perceptual styles
memory styles
conceptual styles
control styles
cognitive holon
Opis:
The organization of human cognitive styles can be described as a kind of functional system or as an holon. In this framework it is possible to propose a new theoretical base for classifying the primary cognitive styles. The fundamental theoretical thesis is that for all styles there is one common mechanism of forming and scanning the perceptual and memory field induced by the situation, and by the differences in the manner of carrying out the processes of field scanning /codes interfering depend on the range of conceptual equivalency and cognitive control of behavior. In the functional describing of the basic set of cognitive styles we must take into account three elements of the chain: neurobiological modules -> organization of cognitive holon -> behavioral manifestation of styles.
Źródło:
Polish Psychological Bulletin; 2010, 41, 3
0079-2993
Pojawia się w:
Polish Psychological Bulletin
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Relations between aggressiveness and a feeling of tension, social control and contacts in crime peer environment among high school students
Autorzy:
Marcin, Jurczyk,
Powiązania:
https://bibliotekanauki.pl/articles/896632.pdf
Data publikacji:
2019-08-19
Wydawca:
Akademia Pedagogiki Specjalnej im. Marii Grzegorzewskiej. Wydawnictwo APS
Tematy:
aggressiveness
aggression
anger
hostility
a general theory of tension by Robert Agnew
social control
adolescence
Opis:
The aim of the experiment described in the current paper was to analyze existing relationships between physical aggression, verbal aggression, anger, and hostility and an overall level of tension (and its types), social control and contacts in crime environment among girls and boys from above secondary schools. Altogether, there were 133 participants (66 girls and 67 boys aged between 16 and 18 years old). The measurements used were as follows: Aggression Questionnaire by Buss–Perry in Amita version (prepared by E. Aranowska J., Rytel, and A. Szymańską, 2015) investigating four dimensions of aggressiveness, and Questionnaire of a feeling of tension and restricting factors by E. Czerwińska-Jakimiuk (2011). A method of diagnostic survey was used and the experiment had a qualitative character. A correlation analysis using a rho-Spearman factor between the above-mentioned dimensions of aggressiveness and an overall level of tension (and its types), social control, and contacts in crime environment revealed significant relationships between variables, both among girls and boys. Among girls, none from the analyzed scales of tension and contacts in crime environment showed any significant relationship with verbal aggression. Among boys, a majority of the scales of tension, social control, and also contacts in crime environment correlated significantly with dimensions of aggressiveness.
Źródło:
Psychologia Wychowawcza; 2018, 56(14); 42-62
0033-2860
Pojawia się w:
Psychologia Wychowawcza
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Design of an adaptive fuzzy variable structure compensator for the nonholonomic mobile robot in trajectory tracking task
Autorzy:
Begnini, M.
Bertol, W.
Martins, N. A.
Powiązania:
https://bibliotekanauki.pl/articles/971054.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
nonholonomic mobile robot
trajectory tracking
variable structure control
uncertainties and disturbances
fuzzy compensator
Lyapunov theory
Opis:
A robust adaptive kinematic control strategy, based on the methodology of variable structure control is considered in this paper. Because the dynamics of mobile robots is subject to uncertainties and disturbances, a fuzzy compensator is adopted to estimate them. In order to minimize the tracking errors and to attenuate the chattering phenomenon, an adaptation law for the fuzzy compensator is obtained by Lyapunov stability theory so as to asymptotically stabilize the control system as well as guarantee the convergence of the tracking errors. In terms of comparison with the boundary layer variable structure controller, simulations and experiments verify the feasibility and effectiveness of the proposed kinematic control strategy for the nonholonomic mobile robots under the incidence of uncertainties and disturbances.
Źródło:
Control and Cybernetics; 2018, 47, 3; 239-275
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Teoria kontroli społecznej w kryminologii
The Theory of Social Control in Criminology
Autorzy:
Kossowska, Anna
Powiązania:
https://bibliotekanauki.pl/articles/699086.pdf
Data publikacji:
1983
Wydawca:
Polska Akademia Nauk. Instytut Nauk Prawnych PAN
Tematy:
kontrola społeczna
teoria powstrzymywania
socjalizacja
więzi społeczne
kryminologia
containment theory
socialization
social control
social bonds
criminology
Opis:
              "Social control" is one of thę most fundamental  concepts in sociology. Nevertheless, the meaning of that term has changed, parallel with the development of sociology as an academic discipline. Originally, the idea of social control was the focal idea in studies of the organization and growth of industrial societies, and formed the basis of investigations of the various elements constituting law and order. Nowadays, the dominant trend is to narrow the meaning of the term „social control" to defining the process of conformism to the rules of society. It is this second meaning that is used in criminology today. There is a basic difference betwęen the theory of social control and other criminological theories. This difference consists in the fact that this theory, unlike other ones, tries to explain why people do not break the law, why they behave according to the rules of society, why they fall in with the group - in other words, why they are conformist in their  attitude towards the rules and norms, as well as to the values generally accepted by society. The other theories try to find out what makes people go against the social norm.       The basic principle of the theory of social control is the recognition that human beings must learn social behaviour through a process of socialisation. The aim of socialisation is to lead people to absorb the norms and values held in esteem by a given society. The process whereby the individual absorbs social norms and values depends mainly on the character of his links with the primary social groups, on the cohesion of the system of social norms, and on how far conformily with those norms will offer him the advantages he looks for.        A survey of the criminological literature dealing with the question of the effect of social control on deviant behaviour reveals that several theoretical  approaches exist, each of them emphasizing different elements of such control. These elements are: the social bonds, the system of norms and yalues and the course and results of socialisation. These three theoretical approaches are not mutually exclusive. They are undoubtedly complementary.     We can distinguish three theoretical approaches to social control: a) the socialisation approach, b) the sociar bond approach, and c) the normative system approach.      In the first of these approaches, attempts are made above all to explain how socialisation takes place, and what results it leads to.     The chief representatives of this approach may be said to be W. Reckless, I. Nye, and A. Reiss. Recklessr is the author of the containment theory, in which he distinguishes the following elements of social control: We have outer containment when external pressure is exerted on the individualn by the group, or by society, in order to bring about behaviour approved by the group. This kind of pressure is exerted through training the individual to carry out socially approved roles, through his affiliation to tradition and the community in which he lives, and through direct control. We have inner containment when, through socialisation, the individual develops self-control, that is, what we sometimes call his conscience. Five elements developed in the course of socialisation go to make up inner containment: a favorable self-concept, goal orientation, a realistic,aspiration level, adequate frustration tolerance, and commitment to socially accepted norms and values.        These two mechanisms - outer containment and inner containment  - function either together or soparately. In some cases they reinforce each other, while in other cases they are complementary. On the whole, inner containment regulates behaviour based on a person's internal pressures whereas outer containment is used when factors in the environment favour criminal  behaviour. But there are also frequent situations where, when inner containment fails, behaviour is modified by exteinal controlling factors; and conversely, it sometimes happens that in situations where control by the social group or social institutions is ineffective, self-control is the regulating mechanism. Nye is of  the opinion that the role of social control in society is that it strengthens our motivation towards conformist behaviour. It is a factor that increases our conformism, whereas lack of it  encourages anti-social behaviour. Nye  sees four types of social control: Internal control occurs when, in the course of socialisation the individual Internalises the norms and values generally accepted in the given society, so that they become components of this conscience. Indirect control is based on the emotional links between the child and his parents which cause the child to absorb the rules of behaviour passed on by the parents in the course of socialisation. Direct control is exerted by the social institutions and primary groups; punishments are threatened in the case of nonconformist behaviour. Then we have legitimate need satisfaction, where society guarantees that the emotional needs of the individual will be met if he conforms, but threatens that these needs will not be satisfied if he does not conform.       In his well-known paper on the connection between the breakdown of social  control and the occurrence of criminal behaviour, A. Reiss3 declares that criminaIity may be defined as behaviour that is the consequence of the failure of personal control and social control, as regards the regulation of human behaviour in keeping with the social norms.      According to Reiss,  criminal behaviour occurs firstly, when there is a relative lack of internalised norms and rules that would keep behaviour conformist; secondly, when a control mechanism  that previously functioned properly breaks down; and thirdly, when the group to which the individual belongs is such that the social principles for inculcating conformist behaviour are on  the whole lacking, ( or when there is a split between these social principles).       Criminality may be regarded as a function of the relationship between personal control and social control.       The second approach to the theory of social control lays emphasis on the social bond. Hirschi is the chief exponent of this approach, according to which the bonds (taken in the wide sense) between the individual and other people  are the fundamental instrument of social control. According to Hirschi, the social bond consists of four main elements: 1) personal, emotional links (attachment), 2) a rational commitment to conformist behaviour, along with expectations as to punishment and reward (commitment); 3) a degree of involvement which would leave no room for deviant behaviour (involvement), and 4) beliefs.                  In the case of personal attachment, the behaviour of the individual will depend on how sensitive he is to the opinions of others, on how far he reckons with their views. The people who matter here are the members of the primary groups to which the given individual belongs, the people whose opinion he respects, the people who  will expext him to conform to the norms which they themselves recognize. According to Hirschi, the groups with whom bonds are all important are: the parents, the school, and the peer group.         Commitment means that the person absorbs the life style of his environment. A strong commitment to conformist behaviour, with the aim of achieving the kind of goals ranked high by the given culture, means that the person may lose a great deal if he acts contrary to the norms accepted by that culture. At the same time, conformism guarantees as it were that the person's  aspirations will be achieved.        Strong involvement in conformist behaviour results in the fact that the person spends so much time and energy in keeping to the generally accepted model of behaviour that even "physically" he cannot behave otherwise (e.g. for lack of time).          Beliefs affect the acceptance or otherwise of the norms  adhered to in a given society. Difference of behaviour between individuals may be due to difference in the degree to which the norms laid down by the law are accepted.       By and large  Hirschi believes that all four types of social bond act together. Yet he also accepts that the diverse elements separately may each have an independent effect on the person's behaviour. Schrag is one of those who adopt the normative and system approach to the question of the functioning of social control. He examines the functioning of the social control system on two planes; 1) culturally approved ends- culturally approved means, and 2) behaviour expected in a given society (prescriptions) – actual behaviour (performance). The cultural goals (prescribed ends) are values such as: freedom, justice, equality, happiness, security, Means that are approved by society (prescribed means) are such norms as: the law, beliefs, legal codes, regulations, agreements. Goals which may actually be achieved (performed ends) are goals such as influence, social status, prestige, education, reputation, money. The means actually used to attain these goals (performed means) are practices such as. customs, traditions, conventions of behaviour, innovations in existing customs.      A social system works well when all its constituent elements work well together. In such circumstances there are no disruptions in the functioning of social control. But if the various elements of the system clash, social control ceases to function efficiently, that is, it ceases to regulate human behaviour effectively. There is always a danger that the connections between the various elements of the system will become looser. This danger may take at least six forms: the accepted norms may not be able to protect the group values; goals may be beyond the reach of practical action; ways of behaving may be at odds with the sopially accepted norms; goals may be in conflict with the generally accepted values; there may also be a contradiction between values and practices, and between goals and norms. If the system is to work well, it is essential that there should be no basis divergence between formal (= legal) norms, and informal (= moral) norms. If the legal norms are rejected by the group because they do not fit in with the group's values, social control will not work.        According to Schrag, the causes of crime should be sought not so much in the individual as in the social system and the way it functions.       To sum up, one may present the sociological theory of social control as follows. It asks what makes people ready to subscribe to the norms and values accepted in a given society. Three basic types of answer may be given to this question. Answers of the first type stress the course and the effectiveness of socialisation processes. Answers of the second type emphasize the role of social bonds in the shaping of conformist behaviour. Answers of the third type draw attention to the importance of cohesion in the system of norms and values in a given society.        On the whole, socialisation is a process that takes place within the primary groups. Its aim is to make the individual adopt society's norms and values. The optimum situation is where these norms become internalised, that is, they become an integral part of the person's internal mental and moral structure. If this happens, we can say that inner control governs behaviour - that is, the person’s own conscience keeps him  from behaviour that does not fit the generally accepted patterns. This goal can be achieved when there are strong bonds of affection between an individual and his parents, and also when the individual finds emotional support in other primary groups. The role of the primary groups is not only to provide good personal models to imitate, or to help the inaividual to adopt the generally accepted norms, but also to exercise direct control over tbe individual' behaviour by inducing him  to conform. If the individual is to absorb a sociaily approved system of norms and values, that system should be a well integrated  one, the rules should be clearly stated, and behaviour at odds with the approved norm should encounter expected social sanctions. Social control is most effective when three basic factors play a role: when socialisation follows its undisturbed course, when the individual finds support in the group and the group is able to control the behaviour of the individual, and thirdly when the system of social norms and values is cohesive and clear. In times of social unrest, when bonds are weaker, and the individual does not know what to expect from society, social control will be unable to exert effective control over the individual’s behaviour.
                "Social control" is one of thę most fundamental  concepts in sociology. Nevertheless, the meaning of that term has changed, parallel with the development of sociology as an academic discipline. Originally, the idea of social control was the focal idea in studies of the organization and growth of industrial societies, and formed the basis of investigations of the various elements constituting law and order. Nowadays, the dominant trend is to narrow the meaning of the term „social control" to defining the process of conformism to the rules of society. It is this second meaning that is used in criminology today. There is a basic difference betwęen the theory of social control and other criminological theories. This difference consists in the fact that this theory, unlike other ones, tries to explain why people do not break the law, why they behave according to the rules of society, why they fall in with the group - in other words, why they are conformist in their  attitude towards the rules and norms, as well as to the values generally accepted by society. The other theories try to find out what makes people go against the social norm.       The basic principle of the theory of social control is the recognition that human beings must learn social behaviour through a process of socialisation. The aim of socialisation is to lead people to absorb the norms and values held in esteem by a given society. The process whereby the individual absorbs social norms and values depends mainly on the character of his links with the primary social groups, on the cohesion of the system of social norms, and on how far conformily with those norms will offer him the advantages he looks for.        A survey of the criminological literature dealing with the question of the effect of social control on deviant behaviour reveals that several theoretical  approaches exist, each of them emphasizing different elements of such control. These elements are: the social bonds, the system of norms and yalues and the course and results of socialisation. These three theoretical approaches are not mutually exclusive. They are undoubtedly complementary.     We can distinguish three theoretical approaches to social control: a) the socialisation approach, b) the sociar bond approach, and c) the normative system approach.      In the first of these approaches, attempts are made above all to explain how socialisation takes place, and what results it leads to.     The chief representatives of this approach may be said to be W. Reckless, I. Nye, and A. Reiss. Recklessr is the author of the containment theory, in which he distinguishes the following elements of social control: We have outer containment when external pressure is exerted on the individualn by the group, or by society, in order to bring about behaviour approved by the group. This kind of pressure is exerted through training the individual to carry out socially approved roles, through his affiliation to tradition and the community in which he lives, and through direct control. We have inner containment when, through socialisation, the individual develops self-control, that is, what we sometimes call his conscience. Five elements developed in the course of socialisation go to make up inner containment: a favorable self-concept, goal orientation, a realistic,aspiration level, adequate frustration tolerance, and commitment to socially accepted norms and values.        These two mechanisms - outer containment and inner containment  - function either together or soparately. In some cases they reinforce each other, while in other cases they are complementary. On the whole, inner containment regulates behaviour based on a person's internal pressures whereas outer containment is used when factors in the environment favour criminal  behaviour. But there are also frequent situations where, when inner containment fails, behaviour is modified by exteinal controlling factors; and conversely, it sometimes happens that in situations where control by the social group or social institutions is ineffective, self-control is the regulating mechanism. Nye is of  the opinion that the role of social control in society is that it strengthens our motivation towards conformist behaviour. It is a factor that increases our conformism, whereas lack of it  encourages anti-social behaviour. Nye  sees four types of social control: Internal control occurs when, in the course of socialisation the individual Internalises the norms and values generally accepted in the given society, so that they become components of this conscience. Indirect control is based on the emotional links between the child and his parents which cause the child to absorb the rules of behaviour passed on by the parents in the course of socialisation. Direct control is exerted by the social institutions and primary groups; punishments are threatened in the case of nonconformist behaviour. Then we have legitimate need satisfaction, where society guarantees that the emotional needs of the individual will be met if he conforms, but threatens that these needs will not be satisfied if he does not conform.       In his well-known paper on the connection between the breakdown of social  control and the occurrence of criminal behaviour, A. Reiss3 declares that criminaIity may be defined as behaviour that is the consequence of the failure of personal control and social control, as regards the regulation of human behaviour in keeping with the social norms.      According to Reiss,  criminal behaviour occurs firstly, when there is a relative lack of internalised norms and rules that would keep behaviour conformist; secondly, when a control mechanism  that previously functioned properly breaks down; and thirdly, when the group to which the individual belongs is such that the social principles for inculcating conformist behaviour are on  the whole lacking, ( or when there is a split between these social principles).       Criminality may be regarded as a function of the relationship between personal control and social control.       The second approach to the theory of social control lays emphasis on the social bond. Hirschi is the chief exponent of this approach, according to which the bonds (taken in the wide sense) between the individual and other people  are the fundamental instrument of social control. According to Hirschi, the social bond consists of four main elements: 1) personal, emotional links (attachment), 2) a rational commitment to conformist behaviour, along with expectations as to punishment and reward (commitment); 3) a degree of involvement which would leave no room for deviant behaviour (involvement), and 4) beliefs.                  In the case of personal attachment, the behaviour of the individual will depend on how sensitive he is to the opinions of others, on how far he reckons with their views. The people who matter here are the members of the primary groups to which the given individual belongs, the people whose opinion he respects, the people who  will expext him to conform to the norms which they themselves recognize. According to Hirschi, the groups with whom bonds are all important are: the parents, the school, and the peer group.         Commitment means that the person absorbs the life style of his environment. A strong commitment to conformist behaviour, with the aim of achieving the kind of goals ranked high by the given culture, means that the person may lose a great deal if he acts contrary to the norms accepted by that culture. At the same time, conformism guarantees as it were that the person's  aspirations will be achieved.        Strong involvement in conformist behaviour results in the fact that the person spends so much time and energy in keeping to the generally accepted model of behaviour that even "physically" he cannot behave otherwise (e.g. for lack of time).          Beliefs affect the acceptance or otherwise of the norms  adhered to in a given society. Difference of behaviour between individuals may be due to difference in the degree to which the norms laid down by the law are accepted.       By and large  Hirschi believes that all four types of social bond act together. Yet he also accepts that the diverse elements separately may each have an independent effect on the person's behaviour. Schrag is one of those who adopt the normative and system approach to the question of the functioning of social control. He examines the functioning of the social control system on two planes; 1) culturally approved ends- culturally approved means, and 2) behaviour expected in a given society (prescriptions) – actual behaviour (performance). The cultural goals (prescribed ends) are values such as: freedom, justice, equality, happiness, security, Means that are approved by society (prescribed means) are such norms as: the law, beliefs, legal codes, regulations, agreements. Goals which may actually be achieved (performed ends) are goals such as influence, social status, prestige, education, reputation, money. The means actually used to attain these goals (performed means) are practices such as. customs, traditions, conventions of behaviour, innovations in existing customs.      A social system works well when all its constituent elements work well together. In such circumstances there are no disruptions in the functioning of social control. But if the various elements of the system clash, social control ceases to function efficiently, that is, it ceases to regulate human behaviour effectively. There is always a danger that the connections between the various elements of the system will become looser. This danger may take at least six forms: the accepted norms may not be able to protect the group values; goals may be beyond the reach of practical action; ways of behaving may be at odds with the sopially accepted norms; goals may be in conflict with the generally accepted values; there may also be a contradiction between values and practices, and between goals and norms. If the system is to work well, it is essential that there should be no basis divergence between formal (= legal) norms, and informal (= moral) norms. If the legal norms are rejected by the group because they do not fit in with the group's values, social control will not work.        According to Schrag, the causes of crime should be sought not so much in the individual as in the social system and the way it functions.       To sum up, one may present the sociological theory of social control as follows. It asks what makes people ready to subscribe to the norms and values accepted in a given society. Three basic types of answer may be given to this question. Answers of the first type stress the course and the effectiveness of socialisation processes. Answers of the second type emphasize the role of social bonds in the shaping of conformist behaviour. Answers of the third type draw attention to the importance of cohesion in the system of norms and values in a given society.        On the whole, socialisation is a process that takes place within the primary groups. Its aim is to make the individual adopt society's norms and values. The optimum situation is where these norms become internalised, that is, they become an integral part of the person's internal mental and moral structure. If this happens, we can say that inner control governs behaviour - that is, the person’s own conscience keeps him  from behaviour that does not fit the generally accepted patterns. This goal can be achieved when there are strong bonds of affection between an individual and his parents, and also when the individual finds emotional support in other primary groups. The role of the primary groups is not only to provide good personal models to imitate, or to help the inaividual to adopt the generally accepted norms, but also to exercise direct control over tbe individual' behaviour by inducing him  to conform. If the individual is to absorb a sociaily approved system of norms and values, that system should be a well integrated  one, the rules should be clearly stated, and behaviour at odds with the approved norm should encounter expected social sanctions. Social control is most effective when three basic factors play a role: when socialisation follows its undisturbed course, when the individual finds support in the group and the group is able to control the behaviour of the individual, and thirdly when the system of social norms and values is cohesive and clear. In times of social unrest, when bonds are weaker, and the individual does not know what to expect from society, social control will be unable to exert effective control over the individual’s behaviour.
Źródło:
Archiwum Kryminologii; 1983, X; 7-22
0066-6890
2719-4280
Pojawia się w:
Archiwum Kryminologii
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Indirect Control of Corporations: Analysis and Simulations
Autorzy:
Stach, I.
Powiązania:
https://bibliotekanauki.pl/articles/375977.pdf
Data publikacji:
2017
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
corporate shareholding analysis
cooperative game theory
direct and indirect control
financial and economic modeling
power indices
Opis:
This paper is devoted to the concept of indirect control in corporate shareholding networks. This topic is important in financial economics. Since shareholding size does not actually reflect an investor’s power-control in corporate shareholding networks, diverse approaches to measuring the control-power of investors has been proposed. We focus in particular on a game-theoretical approach; specifically the model of Denti and Prati (2001) and its implementation to control sharing analysis and simulation in shareholding networks thanks to the computer program „Control Sharing Simulation”.
Źródło:
Decision Making in Manufacturing and Services; 2017, 11, 1-2; 31-51
1896-8325
2300-7087
Pojawia się w:
Decision Making in Manufacturing and Services
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Self-determination among inmates serving prison sentences in selected systems: the role of temporal orientation and self-control skills
Poczucie autodeterminacji u osadzonych odbywających karę pozbawienia wolności w wybranych systemach Rola orientacji temporalnej oraz sprawności mechanizmów kontroli działania
Autorzy:
Piotrów, Ewa
Kadzikowska-Wrzosek, Romana
Powiązania:
https://bibliotekanauki.pl/articles/1627372.pdf
Data publikacji:
2021-09-23
Wydawca:
Fundacja Pedagogium
Tematy:
kara pozbawienia wolności
teoria autodeterminacji
orientacja temporalna
samokontrola
imprisonment
self-determination theory
temporal orientation
self-control skills
Opis:
Celem badania było sprawdzenie w jaki sposób na poczucie autodeterminacji skazanych – poczucie kierowania własnymi działaniami i przyjmowanie za nie odpowiedzialności wpływa system odbywania kary (system programowanego oddziaływania i system zwykły), zdolności do samokontroli oraz orientacja temporalna. Przeprowadzono badanie korelacyjne (N = 91; system zwykły N = 54; system programowanego oddziaływania N = 37). Do pomiaru poczucia autodeterminacji wykorzystano Kwestionariusz Dążeń Osobistych Emmonsa (Emmons 1998), zdolności do samokontroli zmierzono za pomocą Kwestionariusza Kontroli Działania (ACS-90) Kuhla w polskiej adaptacji Marszał-Wiśniewskiej (2002), a orientację temporalną oceniono na podstawie Inwentarza Perspektywy Czasowej Zimbardo (ZTPI) (Zimbardo, Boyd 2011) w polskiej adaptacji Sobol-Kwapińskiej, Przepiórki i Zimbardo (2016). Niezgodnie z przewidywaniami nie wykazano istotnego wpływu na poczucie autodeterminacji skazanych systemu odbywania kary. Nieistotny okazał się także wpływ przyszłościowej perspektywy czasowej. Potwierdzono natomiast istotne oddziaływanie zdolności do samokontroli oraz fatalistycznej orientacji na teraźniejszość. Niskie zdolności do samokontroli powodują fatalistyczną orientację na teraźniejszość, a to z kolei negatywnie wpływa na poczucie autodeterminacji.Wyniki badania potwierdzają, że osiągniecie ważnego celu resocjalizacyjnego jakim jest wzbudzenie w skazanym woli do zmiany poprzez kształtowanie podmiotowości i sprawstwa w dużym stopniu powinno polegać na oddziaływaniu na takie właściwości osobowości skazanych, jak ich zdolności do samokontroli oraz orientacja temporalna.
The aim of the study was to examine how convicts’ self-determination – the sense of directing one’s own actions and taking responsibility for them – is influenced by the system of serving the sentence (the programmed intervention system and the regular system), the ability to self-control and the temporal orientation. A correlational study was conducted (N=91; plain system N=54; programmed intervention system N=37). Emmons’ Personal Strivings Questionnaire (Emmons, 1998) was used to measure the self-determination, self-control skills were measured using Kuhl’s Action Control Scale (ACS-90) in the Polish adaptation by Marszał-Wiśniewska (2002), and temporal orientation was assessed using Zimbardo’s Time Perspective Inventory (ZTPI) (Zimbardo and Boyd, 2011), in the Polish adaptation of Sobol-Kwapińska, Przepiórka and Zimbardo (2016). Contrary to predictions, there was no significant effect of the sentence serving system on convicts’ self-determination. The effect of future time orientation was also found to be insignificant. In contrast, the significant effects of self-control ability and present-fatalistic orientation were confirmed. Low self-control skills result in present-fatalistic orientation, which in turn negatively affects self-determination. The results of the study confirm that the achievement of the important social rehabilitation goal of arousing the will to change in the convict by shaping subjectivity and agency should rely to a large extent on influencing such characteristics of the convicts’ personality as their self-control skills and temporal orientation.
Źródło:
Resocjalizacja Polska; 2021, 21; 317-331
2081-3767
2392-2656
Pojawia się w:
Resocjalizacja Polska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nauka o dobru prawnym i jej rola w badaniu konstytucyjności regulacji prawa karnego
Theory of Legal Good as a Constitutional Control Method of a Criminal Law
Autorzy:
Filipczak, Mateusz
Powiązania:
https://bibliotekanauki.pl/articles/596536.pdf
Data publikacji:
2017
Wydawca:
Łódzkie Towarzystwo Naukowe
Tematy:
nauka o dobru prawnym
wykładnia konstytucji
teoria prawa
prawa karne
kontrola konstytucyjności
theory of legal good
interpretation of constitution
theory of law
criminal law
constitutional control
Opis:
W opracowaniu podjęto tematykę zastosowania nauki o dobru prawnym jako narzędzia kontroli zgodności z konstytucją regulacji o charakterze prawnokarnym. Omówiono pojęcie dobra prawnego, które wyznacza zarówno granice zewnętrzne prawa karnego, jak i granice wewnętrzne prawa karnego. Wyjaśniono, że dobro prawne powinno być rozumiane jako wartość społeczna, czyli jak interes. Podjęto również polemikę ze źle rozumianym prawem karnym interesu. Przytoczono nurt tzw. transpozytywnej nauki o dobru prawnym, która wiąże termin dobra prawnego z konstytucją. Z teoretycznego punktu widzenia podniesiono problem tzw. kryterialnej nierozstrzygalności w prawie karnym. Jako konkluzję wskazano, że art. 31 ust. 3 Konstytucji RP powinien być interpretowany w kontekście nauki o dobru prawnym.
The issue of this paper is a using of theory of legal good as a tool for constitutional control in criminal law. It discussed a concept of legal good, which designates both the external borders of the criminal law and internal borders of the criminal law. It was explained that the legal good ought to be understand as social value, which means as interest. It was in dispute over a incorrectly understanding of a interest criminal law. It quoted a transpositive theory of the legal good, which assume a connection between the legal good and Constitution. With regards to theoretical point of view, in this paper was raised a criterion undecidable problem in the criminal law. In conclusion was said that art. 31 passage 3 Constitution RP ought to be interpreted in context of the theory of legal good.
Źródło:
Studia Prawno-Ekonomiczne; 2017, 102; 23-36
0081-6841
Pojawia się w:
Studia Prawno-Ekonomiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Quasi-instantaneous generation of reference signals for hybrid compensator control
Autorzy:
Czarnecki, L. S.
Powiązania:
https://bibliotekanauki.pl/articles/262594.pdf
Data publikacji:
2007
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie
Tematy:
compensator control
CPC
harmonic filters
hybrid compensators
power variation
power theory
non-periodic currents
semi-periodic currents
harmonics
Opis:
Power variation of a customer load can disturb other loads in distribution systems and compensators for such loads are sometimes needed. Voltages and currents in systems with such loads can be asymmetrical, nonperiodic, distorted and even unpredictable. Consequently, reference signals for the compensator control have to be generated in a situation where the power properties of the load are not well specified. Voltages and currents in systems with time-varying loads, although nonperiodic, can be treated as quantities with a disturbed periodicity. These are referred to as semi-periodic quantities. Under such an assumption, the Current Physical Components (CPC) power theory can by used for estimation of the power properties of such loads. In such a case, the CPC power theory provides fundamentals for a quasi-instantaneous generation of reference signals for the compensator control, based both on the frequency- and on the time-domain approach. The paper presents fundamentals of generation of reference signals for unbalanced loads with semi-periodic voltages and currents.
Źródło:
Electrical Power Quality and Utilisation. Journal; 2007, 13, 2; 3-8
1896-4672
Pojawia się w:
Electrical Power Quality and Utilisation. Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Teoria kosztów transakcyjnych a system kontroli zarządczej w łańcuchach dostaw
A transaction cost theory and management control system in supply chains
Autorzy:
Surowiec, Anna
Powiązania:
https://bibliotekanauki.pl/articles/591308.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Ekonomiczny w Katowicach
Tematy:
Kontrola zarządcza
Łańcuchy dostaw
Teoria kosztów transakcyjnych
Zarządzanie kosztami
Cost management
Management control
Supply chains
Transaction cost theory
Opis:
W artykule odniesiono się do teorii kosztów transakcyjnych jako dominującej teorii wyjaśniającej tworzenie relacji międzyorganizacyjnych. Popularność teorii opiera się na założeniu, że tradycyjne systemy rachunkowości zarządczej są niewystarczające do pomiaru kosztów transakcji, a tym samym nie są w stanie w pełni określić całkowitych kosztów takich powiązań w łańcuchach dostaw. Celem niniejszego artykułu jest przegląd badań nad mechanizmami kontroli zarządczej w łańcuchu dostaw w zakresie kosztów transakcji. Analiza relacji pomiędzy uczestnikami łańcucha dostaw dokonana została na podstawie teorii kosztów transakcyjnych i w kontekście stosowania niekompletnych kontraktów.
The article relates to the subject of transaction cost theory as the dominant theory explaining the formation of inter-organizational relationships. The popularity of the theory is based on the argument that traditional management accounting systems are inadequate for measuring transaction costs, and thus are not able to fully capture the total cost of such relationships in the supply chain. The purpose of this article is to review research on the management control mechanisms in the supply chain in terms of transaction costs The analysis of the relationship between the participants in the supply chain are made on the basis of the theory of transaction costs, and in the context of the use of incomplete contracts.
Źródło:
Studia Ekonomiczne; 2015, 224; 220-228
2083-8611
Pojawia się w:
Studia Ekonomiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Percepcja bez wrażeń zmysłowych. „Nowa psychologia” J. J. Gibsona
Perception without sensations. The “New Psychology” of J. J. Gibson
Autorzy:
Schetz, Adriana
Powiązania:
https://bibliotekanauki.pl/articles/2128399.pdf
Data publikacji:
2019-03-29
Wydawca:
Katolicki Uniwersytet Lubelski Jana Pawła II. Towarzystwo Naukowe KUL
Tematy:
James J. Gibson
perception
ecological theory of perception
gestalt psychology
motor theory of perception
control of action
living retinal image
the senses as perceptual systems
optic array
perceptual invariants
Opis:
Artykuł stanowi omówienie faz rozwoju nowego, w latach 1950-1980, podejścia do zagadnienia percepcji wzrokowej, które zaproponował amerykański psycholog James J. Gibson. Odnoszący się z dużym sceptycyzmem do wyrosłej na gruncie filozofii idealistycznej kategorii wrażenia zmysłowego, Gibson znany jest ze swojej ekologicznej teorii percepcji, w której zaciera się granica między podmiotem i środowiskiem. Nie wszyscy jednak zdają sobie sprawę z tego, że nawiązując do podstawowych założeń psychologii postaci, sformułował on wiele idei, które są w stosunku do niej nowatorskie, a przeprowadzona przez niego drobiazgowa analiza pojęcia ekosystemu bardziej zbliża go do postaciowców, niż wymierzona w kategorię Gestalt krytyka go od nich oddala.
The paper discusses the development of the new – in 1950-1980 – approach to the visual perception proposed by the American psychologist James J. Gibson. He is known from his skepticism about the category of sensation that emerged within the context of idealistic philosophy, and from his ecological theory of perception, wherein the boundary between the subject and environment is obliterated. However, it is not always noticed that while referring to the Gestalt psychology he formulated a lot of original ideas. His detailed analysis of the ecosystem concept makes him more akin to the Gestalt theorists, despite the fact that his criticism of the Gestalt category seems to suggest the very opposite.
Źródło:
Roczniki Psychologiczne; 2012, 15, 1; 31-53
1507-7888
Pojawia się w:
Roczniki Psychologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Vibration suppression of truncated conical shells embedded with magnetostrictive layers based on first order shear deformation theory
Autorzy:
Mohammadrezazadeh, Shahin
Jafari, Ali Asghar
Powiązania:
https://bibliotekanauki.pl/articles/281556.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
isotropic truncated conical shell
magnetostrictive layers
active vibration control
first order shear deformation theory
Ritz method
modified Galerkin method
Opis:
Vibration phenomena in mechanical structures including conical shells are usually undesirable. In order to overcome this problem, this study investigates active vibration control of isotropic truncated conical shells containing magnetostrictive actuators. The first-order shear deformation theory and the Hamilton principle are handled to obtain vibration equations. Moreover, a negative velocity feedback control law is used to actively suppress the vibration. The Ritz and modified Galerkin methods are utilized to obtain results of shell vibration. The results are validated by comparison with the results of literature and finite element software. Finally, the effects of control gain value, magnetostrictive layers thickness, isotropic layer thickness, length and semi-vertex angle of the conical shell on vibration suppression characteristics are obtained in details.
Źródło:
Journal of Theoretical and Applied Mechanics; 2019, 57, 4; 957-972
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Topological dual of $B_∞(I, ₁(X,Y))$ with application to stochastic systems on Hilbert space
Autorzy:
Ahmed, N.
Powiązania:
https://bibliotekanauki.pl/articles/729390.pdf
Data publikacji:
2009
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
representation theory
topological dual
finitely additive operator-valued measures
polish space
Hilbert space
stochastic systems
structural control
uncertainty abatement
Opis:
In this paper, we prove that the topological dual of the Banach space of bounded measurable functions with values in the space of nuclear operators, furnished with the natural topology, is isometrically isomorphic to the space of finitely additive linear operator-valued measures having bounded variation in a Banach space containing the space of bounded linear operators. This is then applied to a stochastic structural control problem. An optimal operator-valued measure, considered as the structural control, is to be chosen so as to minimize fluctuation (volatility). Both existence of optimal policy and necessary conditions of optimality are presented including a conceptual algorithm.
Źródło:
Discussiones Mathematicae, Differential Inclusions, Control and Optimization; 2009, 29, 1; 67-90
1509-9407
Pojawia się w:
Discussiones Mathematicae, Differential Inclusions, Control and Optimization
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Game Strategies of Ship in the Collision Situations
Autorzy:
Lisowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/117558.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
game theory
Game Ship Control (GSC)
Collision Situation
MATLAB
Safe Ship Trajectory
Simulation Research
Neural Ship’s Domain
Algorithm
Opis:
The paper introduced the basic model of process of safe ship control in a collision situation using a game model with j objects, which includes non-linear state equations and non-linear, time varying constraints of the state variables as well as the quality game control index in the forms of the game integral payment and the final payment. Approximated model of the process control as the model of multi-step matrix game in the form of dual linear programming problem has been adopted here. The Game Ship Control GSC computer program has been designed in the Matlab/Simulink software in order to determine the own ship’s safe trajectory. These considerations have been illustrated with examples of a computer simulation using an GSC program for determining the safe ship's trajectory in real navigational situation. Simulation research were passed for five sets of strategies of the own ship and met ships.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2014, 8, 1; 69-77
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Discrete approximation of nonconvex hyperbolic optimal control problems with state constraints
Autorzy:
Chryssoverghi, I.
Bacopoulos, A.
Coletsos, J.
Kokkinis, B.
Powiązania:
https://bibliotekanauki.pl/articles/205975.pdf
Data publikacji:
1998
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
dyskretyzacja
nieliniowy układ hiperboliczny
sterowanie optymalne
zasada minimum
discretization
existence theory
minimum principle
nonlinear hyperbolic systems
optimal control
relaxed controls
Opis:
We consider an opitmal control problem for systems defined by nonlinear hyperbolic partial differential equations with state constraints. Since no convexity assumptions are made on the data, we also consider the control problem in relaxed form. We discretize both the classical and the relaxed problenms by using a finite element method in space and a finite difference scheme in time, the controls being approximated by piecevise constant ones. We develop the existence theory and the necessary conditions for optimality, for the continous and the discrete problems. Finally, we study the behaviour in the limit of discrete optimality, admissibility and extremality properties.
Źródło:
Control and Cybernetics; 1998, 27, 1; 29-50
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reliability-aware zonotopic tube-based model predictive control of a drinking water network
Autorzy:
Khoury, Boutrous
Nejjari, Fatiha
Puig, Vicenç
Powiązania:
https://bibliotekanauki.pl/articles/2124779.pdf
Data publikacji:
2022
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
fault tolerant control
robust MPC
zonotopes
Bayesian theory
drinking water network
sterowanie tolerujące uszkodzenia
zonotopy
teoria bayesowska
sieć wody pitnej
Opis:
A robust economic model predictive control approach that takes into account the reliability of actuators in a network is presented for the control of a drinking water network in the presence of uncertainties in the forecasted demands required for the predictive control design. The uncertain forecasted demand on the nominal MPC may make the optimization process intractable or, to a lesser extent, degrade the controller performance. Thus, the uncertainty on demand is taken into account and considered unknown but bounded in a zonotopic set. Based on this uncertainty description, a robust MPC is formulated to ensure robust constraint satisfaction, performance, stability as well as recursive feasibility through the formulation of an online tube-based MPC and an accompanying appropriate terminal set. Reliability is then modelled based on Bayesian networks, such that the resulting nonlinear function accommodated in the optimization setup is presented in a pseudo-linear form by means of a linear parameter varying representation, mitigating any additional computational expense thanks to the formulation as a quadratic optimization problem. With the inclusion of a reliability index to the economic dominant cost of the MPC, the network users’ requirements are met whilst ensuring improved reliability, therefore decreasing short and long term operational costs for water utility operators. Capabilities of the designed controller are demonstrated with simulated scenarios on the Barcelona drinking water network.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2022, 32, 2; 197--211
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Złożoność półgrup charakterystycznych sum prostych “AG” automatów asynchronicznych silnie spójnych ustalonych analogów rozszerzeń związanych z izomorfizmani DFASC2
Complexity of the characteristic semi-group “AG” of the asynchronous automatons of the strongly connected determined analogs, their extensions associated with isomorpism DFASC2
Autorzy:
Bocian, S.
Powiązania:
https://bibliotekanauki.pl/articles/309692.pdf
Data publikacji:
2017
Wydawca:
Instytut Naukowo-Wydawniczy "SPATIUM"
Tematy:
pojazd szynowy
sterowanie pojazdem
symulacja sterowania
teoria automatów
automaty asynchroniczne
analiza graficzna
izomorfizm
model matematyczny
rail vehicle
vehicle control
control simulation
automata theory
asynchronous automaton
graphical analysis
isomorphism
mathematical model
Opis:
W artykule przedstawiono i przeprowadzono dowód na wyznaczanie złożoności półgrup charakterystycznych sum prostych “AG” automatów deterministycznych skończonych asynchronicznych silnie spójnych DFASC2 (deterministic finite asynchronous strongly connected). Półgrupa charakterystyczna automatu ingeruje w algorytm obliczeniowy uogólnionych homomorfizmów automatów, zatem wyznaczanie złożoności półgrupy charakterystycznej pozwala na oszacowanie złożoności obliczeniowej uogólnionych homomorfizmów dla innych klas automatów. W zakresie modelu matematycznego koncepcja ustalonego analogu rozszerzania automatu AG związanego z izomorfizmami g0, g1,..., gq-1 gdzie q stopień rozszerzenia, przy odpowiednich założeniach symuluje automat zmienny w czasie. Automat zmienny w czasie jest adekwatnym modelem matematycznym dla wielu procesów technicznych i obliczeniowych czasu rzeczywiste. Automaty te symulują prace kilku automatów za pomocą jednego automatu zmiennego w czasie. Sumę prosta automatów można uważać odpowiednio za realizację sekwencyjnych obliczeń.
The paper presents the assumption and the evidence is carried out of the simple sum complexity of characteristic semi-groups of any number (“G”) of deterministic, finite, asynchronous, highly consistent DFASC2. automata. The characteristic semi-group of the automaton interferes in the computational algorithm of the generalized homoeomorphism of the automatons. Then determination the complexity of the characteristic semi-group enables to estimate the complexity of the computational generalized homoeomorphism for the other classes of automatons. In the range of the mathematical model the conception of the determined analog of the extension of the automaton A associated with the isomorphism g0, g1,..., gq-1 where is the grade of the extensions, with the suitable assumptions it simulates the automaton variable in time. The variable automaton in time is the adequate mathematical model for the many technical and computational processes of the real time. The direct sum of automatons can be considered as the realization - sequence calculations accordingly.
Źródło:
Autobusy : technika, eksploatacja, systemy transportowe; 2017, 18, 12; 1473-1477, CD
1509-5878
2450-7725
Pojawia się w:
Autobusy : technika, eksploatacja, systemy transportowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Review, design, stabilization and synchronization of fractional-order energy resources demand-supply hyperchaotic systems using fractional-order PD-based feedback control scheme
Autorzy:
Soukkou, Ammar
Soukkou, Yassine
Haddad, Sofiane
Benghanem, Mohamed
Rabhi, Abdelhamid
Powiązania:
https://bibliotekanauki.pl/articles/27322620.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
fractional-order systems
fractional-order control
Lyapunov stability theory
multiobjective optimization
artificial hummingbird algorithm
stabilization
synchronization
energy resources demand-dupply systems
Opis:
This paper introduces a fractional-order PD approach (F-oPD) designed to control a large class of dynamical systems known as fractional-order chaotic systems (F-oCSs). The design process involves formulating an optimization problem to determine the parameters of the developed controller while satisfying the desired performance criteria. The stability of the control loop is initially assessed using the Lyapunov’s direct method and the latest stability assumptions for fractional-order systems. Additionally, an optimization algorithm inspired by the flight skills and foraging behavior of hummingbirds, known as the Artificial Hummingbird Algorithm (AHA), is employed as a tool for optimization. To evaluate the effectiveness of the proposed design approach, the fractional-order energy resources demand-supply (Fo-ERDS) hyperchaotic system is utilized as an illustrative example.
Źródło:
Archives of Control Sciences; 2023, 33, 3; 539--563
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wprowadzanie struktury w życie dziecka w ujęciu teorii samostanowienia
Provision of structure in educational context: Perspective of self-determination theory
Autorzy:
Święcicka, Małgorzata
Powiązania:
https://bibliotekanauki.pl/articles/896452.pdf
Data publikacji:
2019-12-11
Wydawca:
Akademia Pedagogiki Specjalnej im. Marii Grzegorzewskiej. Wydawnictwo APS
Tematy:
teoria samostanowienia
motywacja autonomiczna
dostarczanie struktury
rusztowanie
kontrola rodzicielska
self-determination theory (sdt)
autonomous motivation
provision of structure
scaffolding
parenting control
Opis:
Celem artykułu jest analiza sposobu konceptualizacji pojęcia dostarczania struktury w teorii samostanowienia (self determination theory, SDT). Omówiono podstawowe założenia i tezy SDT dotyczące kształtowania się motywacji autonomicznej. Dokonuje się ono poprzez uwewnętrznienie pierwotnie zewnętrznej motywacji, któremu sprzyja zaspokojenie przez wychowawców podstawowych potrzeb dziecka: autonomii, bliskości i kompetencji. Potrzeba kompetencji jest zaspokajana poprzez dostarczanie struktury, czyli stwarzanie przez dorosłych warunków do radzenia sobie przez dziecko z rzeczywistością. Według SDT warunkiem, aby strukturalizacja zachowania dziecka sprzyjała rozwojowi motywacji autonomicznej, jest równoczesne z dostarczaniem struktury wspieranie autonomii dziecka. W celu pokazania specyfiki ujęcia struktury w SDT, pojęcie to zostało skonfrontowane z innymi terminami, dotyczącymi podobnego obszaru oddziaływań rodzicielskich: rusztowaniem, kontrolą, dyscyplinowaniem i stawianiem granic.
The aim of the article is to analyze the concept of a parent’s provision of structure as proposed in the Self-Determination Theory (SDT). Basic assumptions and thesis of SDT concerning autonomous motivation are discussed. According to SDT, autonomous motivation develops by internalization of initially externalized motivation. Parents can facilitate this process by responding to a child's basic psychological needs: autonomy, relatedness and competence. The need for competence is satisfied by providing a structure, which allows children to feel in control of their environment. Parental structure promotes development of autonomous motivation only when parental support is present. In the article the concept of providing a structure is linked to other similar constructs: scaffolding, control and setting limits, to show the specificity of the SDT perspective.
Źródło:
Psychologia Wychowawcza; 2019, 58(16); 73-84
0033-2860
Pojawia się w:
Psychologia Wychowawcza
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Visualisations of the Risk Investment Valuation and the Level of Inventory Control Using the GeoGebra Software
Wizualizacje w ocenie ryzyka inwestycyjnego i sterowaniu poziomem zapasów z wykorzystaniem programu GeoGebra
Autorzy:
Dudzińska-Baryła, Renata
Michalska, Ewa
Powiązania:
https://bibliotekanauki.pl/articles/587320.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Ekonomiczny w Katowicach
Tematy:
Inventory control
Omega ratio
Portfolio theory
Risk
Visualisation in GeoGebra
Ryzyko
Sterowanie zapasami
Teoria portfela
Wizualizacja w programie GeoGebra
Wskaźnik omega
Opis:
The development of information technology forces the usage of software tools in the analysis and visualisation of risk in various fields including economics, finance, management. The graphic presentation of analysis results as well as various relationships contributes to their better understanding. Modern computer software allows for showing dynamics of various decision problems. The aim of the paper is to present the dynamic visualisations of risk analysis in selected fields using the GeoGebra software.
Rozwój technologii informatycznych wymusza korzystanie z programów komputerowych w zakresie analizy i wizualizacji ryzyka w różnych dziedzinach, w tym ekonomii, finansach, zarządzaniu. Graficzne przedstawienie wyników analizy, jak również różnych zależności, przyczynia się do ich lepszego zrozumienia. Nowoczesne oprogramowanie komputerowe pozwala na pokazywanie dynamiki różnych problemów decyzyjnych. Celem artykułu jest przedstawienie wybranych dynamicznych wizualizacji ryzyka utworzonych z wykorzystaniem programu GeoGebra.
Źródło:
Studia Ekonomiczne; 2015, 247; 7-19
2083-8611
Pojawia się w:
Studia Ekonomiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Information Age System For Education In Paradigmal Forecast Discourse
Autorzy:
Bekh, Volodymyr P.
Bekh, Yuliya
Powiązania:
https://bibliotekanauki.pl/articles/476201.pdf
Data publikacji:
2019
Wydawca:
Wyższa Szkoła Ekonomiczno-Humanistyczna w Bielsku-Białej
Tematy:
planetary personality
industrial education
information education
spirit of the era
science
evaluation
free education
theory of education
cognitive pedagogy
personalization
individualization
control parameter
Opis:
The state of origin of the system of education and upbringing of the information age realized in the algorithm of self-organization is predicted on the basis of the regularities of the first stage of the life cycle of the social system of industrial education; the state of the "spirit of the era", which carries the information society, is estimated as an example of a new type of life of the planetary community; worldview, ideological and conceptual prerequisites for forming a new type of education are analyzed; the state of fundamental science is highlighted as a basis for generating a modernization of the content of education in the 21st century; the problems of the theory of education and pedagogy, which are not solved in the perspective of the state educational policy (especially the means of pedagogical influence on the individual, including in the sphere of strategy, tactics and operational management of education) are revealed.
Źródło:
MIND Journal; 2019, 8; 1-15
2451-4454
Pojawia się w:
MIND Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Metody obliczeniowe stosowane podczas projektowania obudowy tuneli
Calculation methods used in the design of tunnel lining
Autorzy:
Cała, Marek
Blajer, Mateusz
Stopkowicz, Agnieszka
Tajduś, Antoni
Powiązania:
https://bibliotekanauki.pl/articles/24024801.pdf
Data publikacji:
2022
Wydawca:
Stowarzyszenie Inżynierów i Techników Komunikacji Rzeczpospolitej Polskiej
Tematy:
teoria silosów Terzaghiego
metoda kontroli konwergencji
GRC
LDP
SCC
obudowa tuneli
modele numeryczne
Terzaghi’s silo theory
convergence control method
tunnel lining
numerical models
Opis:
Artykuł przedstawia ogólną charakterystykę zjawisk zachodzących podczas drążenia tunelu oraz oddziaływań ośrodka skalno-gruntowego na jego obudowę. Charakteryzuje różne metody obliczeniowe stosowane podczas projektowania obudowy tuneli, wskazując ich możliwości i ograniczenia.
This paper presents a general characteristic of the phenomena occurring during tunnel boring and the impact of the rock-soil mass on its support. It characterizes various calculation methods used in the design of tunnel lining, indicating their possibilities and limitations.
Źródło:
Drogownictwo; 2022, 7-8; 213--219
0012-6357
Pojawia się w:
Drogownictwo
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Innovation in Public Sector Management Control Systems in the Context of New Public Management: A Case of an Australian Public Sector Organization
Autorzy:
Chowdhury, Anup
Shil, Nikhil Chandra
Powiązania:
https://bibliotekanauki.pl/articles/475020.pdf
Data publikacji:
2016
Wydawca:
Fundacja Upowszechniająca Wiedzę i Naukę Cognitione
Tematy:
innovation
management control systems
New Public Management
public sector organization
structuration theory
innowacje
systemy kontroli zarządzania
Nowe Zarządzanie Publiczne
organizacja sektora publicznego
teoria strukturacji
Opis:
This study is about the exploration of innovative management control systems in the context of New Public Management (NPM) initiatives. NPM initiatives created the changes to the structure and processes of public sector organizations with the objective of getting them to run better. A government department in the Australian Capital Territory (ACT) has been selected as the field for investigation. This study draws on a single theoretical perspective, Giddens’s structuration theory to understand the management control systems evolved in the researched organization. Qualitative research methodology is applied to obtain a better understanding of the phenomena. Case-based research method is used in developing a complete understanding of the relative role of controls in the management of organizational performance. In this study, it is argued that the researched organization has adopted various management control tools to improve its performance and demonstrate transparency and accountability. Some of the control tools it has adopted are the innovations in the public sector. It appears from the case that these adopted management control tools forced the researched organization towards better performance supporting the rationale of adopting New Public Management practices.
Źródło:
Journal of Entrepreneurship, Management and Innovation; 2016, 12, 4; 99-125
2299-7075
2299-7326
Pojawia się w:
Journal of Entrepreneurship, Management and Innovation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Jak w zaprojektowanym Wszechświecie zdefiniować to, co niezaprojektowane
Defining Undesign in a Designed Universe
Autorzy:
Snoke, David W.
Powiązania:
https://bibliotekanauki.pl/articles/553312.pdf
Data publikacji:
2010
Wydawca:
Uniwersytet Zielonogórski. Instytut Filozofii
Tematy:
Święty Augustyn
poziomy opisu
poziomy zdolności
teoria inteligentnego projektu
dziedzina kontroli
Saint Augustine
levels of description
levels of giftedness
intelligent design theory
domain of control
Opis:
Argument z projektu, przeformułowany obecnie przez sympatyków ruchu Inteligentnego Projektu, jest oparty przede wszystkim na przeciwstawieniu rzeczy zaprojektowanych rzeczom niezaprojektowanym. Fakt ten jest jednak kłopotliwy dla chrześcijan. Skoro bowiem twierdzą oni, że Bóg zaprojektował cały Wszechświat, to jak można mówić, że coś nie jest zaprojektowane? W mojej opinii problem ten jest równoważny problemowi wolnej woli, czy też moralnego zła, a jako taki może znaleźć rozwiązanie na gruncie dawnych koncepcji filozoficznych, które dotyczyły tych kwestii – chodzi zwłaszcza o pojęcie różnych poziomów opisu oraz Augustyńską koncepcję różnych poziomów zdolności.
The argument from design, recast today in the Intelligent Design movement, relies critically on the contrast of designed things with undesigned things. This poses a problem for Christians, however, because they affirm that God designed the whole universe. How then can we call anything undesigned? I argue that this problem is equivalent to the problem of free will, or the problem of moral evil, and as such can be addressed by the same philosophical frameworks developed in the past for addressing those issues, in particular the notions of different levels of description and Augustine’s different levels of giftedness.
Źródło:
Filozoficzne Aspekty Genezy; 2009-2010, 6-7; 117-137
2299-0356
Pojawia się w:
Filozoficzne Aspekty Genezy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sustainability Reporting by Owner-Managers of SMEs: The Perspective of Theory of Planned Behavior (TPB)
Raportowanie kwestii zrównoważonego rozwoju przez właścicieli-menedżerów MŚP – perspektywa teorii planowanego zachowania
Autorzy:
Acheampong, Owusu
Dogbe, Courage Simon Kofi
Iddris, Faisal
Powiązania:
https://bibliotekanauki.pl/articles/16530134.pdf
Data publikacji:
2022-11-10
Wydawca:
Uniwersytet Warszawski. Wydawnictwo Naukowe Wydziału Zarządzania
Tematy:
theory of planned behavior
sustainability reporting
SMEs
subjective norms
perceived behavioral control
teoria planowanego zachowania
raportowanie kwestii zrównoważonego rozwoju
MŚP
subiektywne normy
postrzegana kontrola behawioralna
Opis:
Purpose: The study assessed how owner-managers’ psychological attributes (attitude towards behavior, subjective norms, and perceived behavior control) influenced sustainability reporting among SMEs. Design/methodology/approach: The study was based on cross-sectional data gathered using a structured questionnaire as the research instrument. The population of the study comprised SMEs in Kumasi metro of Ghana. The study focused on 213 SMEs, and respondents were owner-managers. The data analysis was based Structural Equation Modeling (SEM) run in Amos (v.23). Findings: Owner-managers’ attitude towards behavior had a significant positive influence on sustainability reporting among SMEs. Similarly, SME owner-managers’ subjective norms positively influenced sustainability reporting. Also, SME owner-managers’ perceived behavior control positively influenced sustainability reporting. Among these variables, however, attitude towards behavior had the greatest impact. Research limitations/implications: The study used a closed-ended questionnaire to solicit responses from respondents. Such a questionnaire acknowledges the presence of inherent problems of not permitting respondents to explicitly express their own views as they may wish. Practical implications: The findings of the study have an important implication for considerations by the government in trying to encourage owner-managers to adopt or improve sustainability reporting behavior among SMEs in Ghana. Social implications: This study contributes to solving the societal need for sustainability by identifying how owner-managers’ psychological characteristics influence sustainability reporting. Originality/value: The theory of planned behavior has been used widely in a number of studies, but very little is known about how it could predict sustainability reporting among SMEs, especially in developing countries.
Cel: w opracowaniu oceniono, w jaki sposób atrybuty psychologiczne właścicieli-menedżerów (postawa wobec danego zachowania, subiektywne normy i postrzegana kontrola behawioralna) wpłynęły na raportowanie kwestii zrównoważonego rozwoju wśród MŚP. Metodologia: badanie oparto na przekrojowych danych zebranych za pomocą ustrukturyzowanego kwestionariusza jako narzędzia badawczego. Badana populacja obejmowała MŚP w Kumasi w Ghanie. Badanie koncentrowało się na 213 MŚP, a respondenci byli ich właścicielami-menedżerami. Analiza danych została oparta na modelowaniu równań strukturalnych (Structural Equation Modeling – SEM) w programie Amos (wersja 23). Wyniki: postawa właścicieli-menedżerów wobec danego zachowania miała znaczący pozytywny wpływ na raportowanie kwestii zrównoważonego rozwoju wśród MŚP, podobnie jak subiektywne normy właścicieli- menedżerów MŚP na raportowanie tych kwestii czy postrzegana kontrola behawioralna właścicieli- -menedżerów MŚP na raportowanie kwestii zrównoważonego rozwoju. Wśród tych zmiennych największy wpływ miała jednak postawa wobec danego zachowania. Ograniczenia/implikacje badawcze: w celu uzyskania odpowiedzi od respondentów w badaniu wykorzystano kwestionariusz z pytaniami zamkniętymi. Tego rodzaju kwestionariusz stwarza nieodłączne problemy, gdyż respondenci nie mają możliwości dobitnego wyrażenia własnych poglądów zgodnie z własną wolą. Implikacje praktyczne: wyniki badania mają istotne znaczenie z punktu widzenia ewentualnych kroków, które mogłoby rozważać państwo w celu zachęcenia właścicieli-menedżerów do przyjęcia lub poprawy praktyk raportowania kwestii zrównoważonego rozwoju wśród MŚP w Ghanie. Implikacje społeczne: badanie przyczynia się do zaspokojenia społecznej potrzeby zrównoważonego rozwoju poprzez określenie, w jaki sposób cechy psychologiczne właścicieli-menedżerów wpływają na raportowanie kwestii zrównoważonego rozwoju. Oryginalność/wartość: teoria planowanego zachowania była szeroko stosowana w wielu badaniach, lecz bardzo niewiele wiadomo na temat tego, w jaki sposób za jej pomocą można prognozować raportowanie kwestii zrównoważonego rozwoju wśród MŚP, zwłaszcza w krajach rozwijających się.
Źródło:
Problemy Zarządzania; 2022, 20, 3(97); 27-46
1644-9584
Pojawia się w:
Problemy Zarządzania
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Integrated mathematical model of competence-based learning-teaching process
Autorzy:
Różewski, P.
Zaikin, O.
Powiązania:
https://bibliotekanauki.pl/articles/202145.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
competence-based learning
incentive mechanism
control in social-economic systems
queuing theory
competence models
nauczanie
mechanizm motywacyjny
sterowanie w systemach społeczno-gospodarczych
teoria kolejek
model kompetencyjny
Opis:
The competence-based learning-teaching process is a significant approach to the didactical process organization. In this paper the mathematical model of the competence-based learning-teaching process is proposed. The model integrates three models: a knowledge representation model (based on the ontological approach), a motivation model (as a behavioral-incentive model) and a servicing model (in a form of the queuing model). The proposed integrated model allows to control the learning-teaching process on different levels of management. The learning-teaching process can be interpreted as competence-based due to Open and Distance Learning (ODL) philosophy. We assume that the competence is a result of fundamental, procedural and project knowledge acquisition in accordance to the incoming European Qualification Framework.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2015, 63, 1; 245-259
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Relacje między agresywnością a poczuciem napięcia, kontrolą społeczną i kontaktami w środowisku przestępczym wśród uczniów szkół ponadgimnazjalnych
Relations between aggressiveness and a feeling of tension, social control and contacts in crime peer environment among high school students
Autorzy:
Marcin, Jurczyk
Powiązania:
https://bibliotekanauki.pl/articles/896623.pdf
Data publikacji:
2019-01-02
Wydawca:
Akademia Pedagogiki Specjalnej im. Marii Grzegorzewskiej. Wydawnictwo APS
Tematy:
agresywność
agresja
gniew
wrogość
ogólna teoria napięcia Roberta Agnew
kontrola społeczna
adolescencja
aggressiveness
aggression
anger
hostility
a general theory of tension by Robert Agnew
social control
adolescence
Opis:
Celem badań przedstawionych w tym artykule była analiza istniejących związków między agresją fizyczną, agresją werbalną, gniewem i wrogością a ogólnym poziomem napięcia (i jego rodzajami), kontrolą społeczną oraz kontaktami w środowisku przestępczym wśród dziewcząt i chłopców ze szkół ponadgimnazjalnych. Łącznie przebadano 133 uczniów (66 dziewcząt oraz 67 chłopców w wieku od 16 do 18 r.ż.). Zastosowane narzędzia badawcze to: Kwestionariusz Agresji Bussa–Perryʼego w wersji Amity (opracowany przez E. Aranowską, J. Rytel oraz A. Szymańską, 2015), badający cztery wymiary agresywności oraz Kwestionariuszem Poczucia Napięcia i Czynników Ograniczających autorstwa E. Czerwińskiej-Jakimiuk (2011). Posłużono się metodą sondażu diagnostycznego. Badania miały charakter ilościowy. Analiza korelacji z wykorzystaniem współczynnika rho-Spearmana między badanymi wymiarami agresywności a ogólnym poczuciem napięcia (i jego rodzajami), kontrolą społeczną i kontaktami w środowisku przestępczym ujawniła istotne związki między zmiennymi zarówno wśród dziewcząt, jak i chłopców. W populacji dziewcząt żadna z analizowanych skal napięcia oraz kontakty w środowisku przestępczym nie wykazały istotnego związku z agresją werbalną. W populacji chłopców większość z rozpatrywanych skal napięcia, kontroli społecznej oraz kontakty w środowisku przestępczym istotnie korelują z badanymi wymiarami agresywności.
The aim of the experiment described in the current paper was to analyze existing relationships between physical aggression, verbal aggression, anger, and hostility and an overall level of tension (and its types), social control and contacts in crime environment among girls and boys from above secondary schools. Altogether, there were 133 participants (66 girls and 67 boys aged between 16 and 18 years old). The measurements used were as follows: Aggression Questionnaire by Buss–Perry in Amita version (prepared by E. Aranowska J., Rytel, and A. Szymańską, 2015) investigating four dimensions of aggressiveness, and Questionnaire of a feeling of tension and restricting factors by E. Czerwińska-Jakimiuk (2011). A method of diagnostic survey was used and the experiment had a qualitative character. A correlation analysis using a rho-Spearman factor between the above-mentioned dimensions of aggressiveness and an overall level of tension (and its types), social control, and contacts in crime environment revealed significant relationships between variables, both among girls and boys. Among girls, none from the analyzed scales of tension and contacts in crime environment showed any significant relationship with verbal aggression. Among boys, a majority of the scales of tension, social control, and also contacts in crime environment correlated significantly with dimensions of aggressiveness.
Źródło:
Psychologia Wychowawcza; 2018, 56(14); 42-62
0033-2860
Pojawia się w:
Psychologia Wychowawcza
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Przestępczość nieletnich w myśl ogólnej teorii napięcia Roberta Agnew
Juvenile delinquency in Robert Agnew’s general strain theory
Autorzy:
Jurczyk, Marcin
Powiązania:
https://bibliotekanauki.pl/articles/698818.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Instytut Nauk Prawnych PAN
Tematy:
ogólna teoria napięcia Roberta Agnew
przestępczość nieletnich
napięcie
rodzina
szkoła
grupa rówieśnicza
kontrola społeczna
Robert Agnew’s general strain theory
juvenile delinquency
strain
family
school
peer group
social control
Opis:
The subject of the text is the theoretical context of Robert Agnew’s General Strain Theory which explains youth crime in terms of social relationships, focussing on the individual’s negative relationships with others. Reference has been made to theories that inspired the development of Agnew’s theory, including Merton’s theory of anomie, Cohen’s theory of subculture formation, Cloward & Ohlin’s opportunity theory, and Messner & Rosenfeld’s institutional anomie theory. The article presents issues regarding the type of strain experienced by the individual in relation to other people, strategies for adapting to strain, the possibilities of predicting it, and the role of relative deprivation in the development of subjectively felt strain among adolescents who commit criminal acts. Further considerations were devoted to research published in Poland and abroad which uses Agnew’s theory to explain youth crime.
Przedmiotem tekstu uczyniono przedstawienie teoretycznego kontekstu ogólnej teorii napięcia autorstwa Roberta Agnew, wyjaśniającej przestępczość młodzieży w kategoriach relacji społecznych polegających na negatywnych stosunkach jednostki z innymi. Odniesiono się do prezentacji teorii będących inspiracją do rozwoju tej teorii, m.in. teorii anomii R.K. Mertona, teorii podkultur dewiacyjnych A. Cohena, teorii zróżnicowanych możliwości R. Clowarda i L. Ohlina oraz instytucjonalnej teorii anomii S. Messnera i R. Rosenfelda. Zaprezentowano zagadnienia dotyczące typów napięć, jakich doznaje jednostka w relacji z innymi osobami, strategii adaptacji do przeżywanego napięcia, możliwości ich przewidywania oraz roli relatywnej deprywacji w rozwoju subiektywnie odczuwanego napięcia wśród młodzieży popełniającej czyny karalne. Dalsze rozważania poświęcono prezentacji wyników badań zagranicznych i polskich wykorzystujących twierdzenia teorii napięcia w wyjaśnianiu przestępczości młodzieży.
Źródło:
Archiwum Kryminologii; 2019, XLI/2; 153-203
0066-6890
2719-4280
Pojawia się w:
Archiwum Kryminologii
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rodzina współczesna wobec wirtualnej rzeczywistości - między rozrywką a uzależnieniem
Autorzy:
Gizella, Jerzy
Powiązania:
https://bibliotekanauki.pl/articles/527538.pdf
Data publikacji:
2011
Wydawca:
Krakowska Akademia im. Andrzeja Frycza Modrzewskiego
Tematy:
family values
virtual reality
digital identity
persuasion
mind control
computer games
social psychology
personality disorders
behavioral disorders
cognitive science
entertainment
infotainment
cyberspace
communication
cultivation theory
advertising
propaganda
media bias
Opis:
There are two definitions of the term Virtual Reality (VR) according to the VR pioneer, Jaron Lanier. The first definition refers to the visual programming technology (especially in computer games) which uses custom designed tools (like helmets, gloves and glasses) combined with special effects in order to achieve an illusion of physical space. The second meaning of the term VR encompasses all the elements of the „alternative” reality of cyberspace in which people communicate by means of different electronic devices. As such, VR allows those who participate in these interactions to manipulate and multiply their digital selves to such an extent as to loose their actual sense of self. VR technologies are used in a variety of professional capacities such as education, medicine, engineering, architecture and so on. Some negative consequences occur primarily with the overuse of VR for entertainment purposes (such as computer games) and include personality and behavioral changes in younger, adolescent users. There are also larger cultural influences to consider. The mind of a modern user of new technologies cannot keep up with the pace of societal changes, promoting behaviors which hinder communication, mutual understanding and cooperation. VR continues to affect the emotional, behavioral and sensory aspects of the psyche. The invasive persuasion of media and advertising influences people’s habits, opinions and ethics. One of the most disturbing cultural changes is the confusion of public and private spheres, Facebook friends for family and the substitution of cyberspace for home life.
Źródło:
Państwo i Społeczeństwo; 2011, 3; 183-197
1643-8299
2451-0858
Pojawia się w:
Państwo i Społeczeństwo
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Competition Protection and Philip Kotler’s Strategic Recommendations
Autorzy:
Fornalczyk, Anna
Powiązania:
https://bibliotekanauki.pl/articles/530081.pdf
Data publikacji:
2011-11-30
Wydawca:
Uniwersytet Warszawski. Wydawnictwo Naukowe Wydziału Zarządzania
Tematy:
competition
dominant market position
predatory pricing
strategic alliances
preventive control of mergers and acquisitions
exploitive or anti-competitive practices
State aid
leniency procedure
Kotler’s theory of modern marketing
Opis:
P. Kotler’s recommendations of modern marketing tell managers how to achieve and maintain a dominant market position. Some of the recommended activities may, however, infringe European and Polish competition law. Objections are not raised by market success achieved as a result of high product quality, good customer care, high market shares, continuous product improvements, new product release, entry onto fast growing markets, and exceeding customer expectations. Competition law problems may appear when a given company, having reached a dominant position, starts abusing it by subjugating the market and dictating business conditions to other market players (suppliers, customers, consumers). This article focuses on predatory pricing, strategic alliances, mergers and acquisitions and State aid issues that may arise from the implementation of Kotler’s recommendations. For market success not to transform into a competition law problem, it is worth remembering the limitations imposed by competition law on the actions of dominant companies. The paper outlines these limitations.
Les recommandations de Philip Kotler concernant le marketing moderne conseillent aux managers comment atteindre et maintenir une position dominante. Certaines des activités recommandées peuvent, pourtant, être en contravention avec la loi polonaise et européenne. Les problèmes du droit de la concurrence peuvent apparaître quand une entreprise donnée, après avoir atteint une position dominante, commence à en abuser par subjuguer le marché et dicter ses conditions aux autres participants du marché (fournisseurs, clients, consommateurs). Cet article se concentre sur les prix prédateurs, alliances stratégiques, fusions-acquisitions et sur les questions de l’aide publique resultant de l’implantation des recommandations de Kotler. Pour que le succès du marché ne se transforme pas en échec, il faut prendre en considération les limitation imposées par le droit de la concurrence sur les actions des entreprises dominantes. Cet article décrit ces limitations.
Źródło:
Yearbook of Antitrust and Regulatory Studies; 2011, 4(5); 11-23
1689-9024
2545-0115
Pojawia się w:
Yearbook of Antitrust and Regulatory Studies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Robust hybrid synchronization control of chaotic 3-cell CNN with uncertain parameters using smooth super twisting algorithm
Autorzy:
Siddique, Nazam
Rehman, Fazal
Raoof, Uzair
Iqbal, Shahid
Rashad, Muhammad
Powiązania:
https://bibliotekanauki.pl/articles/27311427.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
hybrid synchronization
cellular neural network
sliding mode control
smooth super twisting algorithm
Lyapunov stability theory
synchronizacja hybrydowa
sieć neuronowa komórkowa
sterowanie trybem przesuwnym
teoria Lyapunova
stabilność Lyapunova
algorytm super skręcania płynny
Opis:
This paper presents the control design framework for the hybrid synchronization (HS) and parameter identification of the 3-Cell Cellular Neural Network. The cellular neural network (CNN) of this kind has increasing practical importance but due to its strong chaotic behavior and the presence of uncertain parameters make it difficult to design a smooth control framework. Sliding mode control (SMC) is very helpful for this kind of environment where the systems are nonlinear and have uncertain parameters and bounded disturbances. However, conventional SMC offers a dangerous chattering phenomenon, which is not acceptable in this scenario. To get chattering-free control, smooth higher-order SMC formulated on the smooth super twisting algorithm (SSTA) is proposed in this article. The stability of the sliding surface is ensured by the Lyapunov stability theory. The convergence of the error system to zero yields hybrid synchronization and the unknown parameters are computed adaptively. Finally, the results of the proposed control technique are compared with the adaptive integral sliding mode control (AISMC). Numerical simulation results validate the performance of the proposed algorithm.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2023, 71, 5; art. no. e146474
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bezpieczeństwo skazanych kobiet w jednostkach penitencjarnych
Security of convicted women in penitentiary units
Autorzy:
Toroń-Fórmanek, Barbara
Powiązania:
https://bibliotekanauki.pl/articles/1366327.pdf
Data publikacji:
2020-12-29
Wydawca:
Fundacja Pedagogium
Tematy:
kara pozbawienia wolności
placówki penitencjarne
resocjalizacja
socjalizacja
kontrola społeczna
bezpieczeństwo
teoria hierarchii potrzeb
służba więzienna
prison sentence
penitentiary facilities
social rehabilitation
socialization
social control
security
hierarchy of needs theory
prison service
Opis:
Bezpieczeństwo jest jedną z najważniejszych potrzeb jakie człowiek musi sobie zapewnić. Zostało to dobrze ujęte w teorii hierarchii potrzeb A. Maslowa. Sam termin bezpieczeństwa jest definiowany na gruncie nauk o bezpieczeństwie. Pojęcie Human Security dotyczy poziomu bezpieczeństwa każdej osoby. Właśnie pod tym względem może być rozpatrywanyw naukach społecznych, w tym również na płaszczyźnie resocjalizacji. Z tego względu bezpieczeństwo dotyczy takich kwestii, jak: socjalizacja, kontrola społeczna, które to bezpośredniowpływają na proces zmian dokonywanych w okresie odbywania kary pozbawienia wolności. Badania własne dotyczące poczucia stopnia bezpieczeństwa wśród kobiet przebywającychw zakładzie karnym łamią powszechnie występujący stereotyp, że w placówkach penitencjarnych często dochodzi do aktów przemocy. W przypadku wielu kobiet takie uczucie zachodzipo raz pierwszy, co wiąże się z deprywacją tej potrzeby w codziennym życiu. Wzmocnienie poczucia bezpieczeństwa w placówkach poprzez edukację oraz motywowanie i kontrolowanie funkcjonariuszy straży więziennej powoduje, że przeprowadzony proces resocjalizacji (w niektórych przypadkach socjalizacji), prowadzi do wytworzenia się potrzeby bezpieczeństwawśród kobiet odbywających karę pozbawienia wolności. Przedstawione ujęcie poruszanych kwestii odbywa się na polu nauk o resocjalizacji, chociaż w licznych przypadkach posługujesię terminami wywodzącymi się z nauk o bezpieczeństwie.
Security is one of the most important needs that a person has to meet. This has been well reflected in A Maslov’s theory of hierarchy of needs. The term “security” itself is defined inthe field of security studies. The term Human Security refers to the security level of each person. It is in this respect that it can be considered in social sciences, including at the social rehabilitation level. Therefore, security concerns issues such as: socialization, social control, which directly affect the process of changes made during the period of imprisonment. Own research on the sense of security among women staying in prison breaks away from the common stereotype that acts of violence are common in penitentiary institutions. For many women, this is the first time that such a sensation has occurred, which is associated with the deprivation of this need in everyday life. Reinforcing the sense of security in the institutions by educating, motivating and controlling prison guards results in the fact that the process of social rehabilitation (in some cases socialization) leads to the emergence of a need for security among women serving prison sentences. The presented approach to the issues raised takes place in the field of social rehabilitation studies, although in many cases it uses terms derived from security studies.
Źródło:
Resocjalizacja Polska; 2020, 20; 213-229
2081-3767
2392-2656
Pojawia się w:
Resocjalizacja Polska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
New fault tolerant control strategies for nonlinear Takagi-Sugeno systems
Autorzy:
Ichalal, D.
Marx, B.
Ragot, J.
Maquin, D.
Powiązania:
https://bibliotekanauki.pl/articles/331456.pdf
Data publikacji:
2012
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
model Takagi-Sugeno
sterowanie tolerujące uszkodzenia
uszkodzenie równoczesne
estymacja stanu
twierdzenie Lapunowa
Takagi-Sugeno model
fault tolerant control
simultaneous fault
state estimation
Polya's theorem
Lyapunov theory
input to state stability
Opis:
New methodologies for Fault Tolerant Control (FTC) are proposed in order to compensate actuator faults in nonlinear systems. These approaches are based on the representation of the nonlinear system by a Takagi-Sugeno model. Two control laws are proposed requiring simultaneous estimation of the system states and of the occurring actuator faults. The first approach concerns the stabilization problem in the presence of actuator faults. In the second, the system state is forced to track a reference trajectory even in faulty situation. The control performance depends on the estimation quality; indeed, it is important to accurately and rapidly estimate the states and the faults. This task is then performed with an Adaptive Fast State and Fault Observer (AFSFO) for the first case, and a Proportional-Integral Observer (PIO) in the second. Stability conditions are established with Lyapunov theory and expressed in a Linear Matrix Inequality (LMI) formulation to ease the design of FTC. Furthermore, relaxed stability conditions are given with the use of Polya's theorem. Some simulation examples are given in order to illustrate the proposed approaches.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2012, 22, 1; 197-210
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analiza sygnałów chaotycznych do realizacji kryptograficznie bezpiecznego bezprzewodowego kanału komunikacyjnego
Analysis of chaotic signals for cryptographically secure wireless communications
Autorzy:
Czernik, P.
Winiecki, W.
Powiązania:
https://bibliotekanauki.pl/articles/157904.pdf
Data publikacji:
2012
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
autonomiczne bezprzewodowe sieci czujnikowe
kryptografia
rozproszone systemy pomiarowo-sterujące
generatory liczb losowych
teoria chaosu
sygnały chaotyczne
autonomous wireless sensor networks
distributed measurement and control systems
random number generators
chaotic theory
chaotic signals
Opis:
W artykule przedstawiono właściwości sygnałów chaotycznych specyficznych do zastosowań w kryptograficznie bezpiecznej komunikacji bezprzewodowej dla rozproszonych systemów pomiarowo-sterujących, w szczególności bezprzewodowych sieci czujnikowych. Przeanalizowano zjawisko synchronizacji dwóch układów chaotycznych. Zaprezentowano analizę symulacyjną modeli generatorów sygnałów chaotycznych bazujących na nieliniowych układach dynamicznych, popartą wynikami eksperymentalnymi.
This paper presents specific properties of chaotic signals applicable to cryptographically secure wireless communications. Chaotic signals have characteristics that significantly distinguish them from signals commonly used in wireless distributed measurement and control systems. The most important feature of the chaotic signal is its exponential sensitivity to initial conditions. Due to the finite measurement accuracy it is very difficult to predict the signal value after a certain time from the execution of the measurement. Moreover, it is very difficult to determine prior values of the signal having particular measurement result. Different characteristics of this type of electrical signals result in a number of potential ad-vantages which are as follows: low probability of transmission detection (capture), possibility of using occupied bandwidth, resilience to errors caused by multipath propagation, lower transmission power, possibility of coherent transmission and communication privacy. The paper deals with an analysis of the phenomenon of synchronization of two chaotic systems. The ob-tained simulation and experimental results of different chaotic signal generator models using nonlinear dynamical circuits are presented and discussed.
Źródło:
Pomiary Automatyka Kontrola; 2012, R. 58, nr 9, 9; 785-788
0032-4140
Pojawia się w:
Pomiary Automatyka Kontrola
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Shaping entrepreneurial intentions: The impact of entrepreneurship education on university students
Kształtowanie planów zawodowych. Wpływ edukacji z zakresu przedsiębiorczości na intencje przedsiębiorcze studentów uczelni wyższych
Autorzy:
Sahinidis, Alexandros G.
Tsaknis, Panagiotis A.
Powiązania:
https://bibliotekanauki.pl/articles/1012984.pdf
Data publikacji:
2020-12-21
Wydawca:
Małopolska Wyższa Szkoła Ekonomiczna w Tarnowie
Tematy:
edukacja z zakresu przedsiębiorczości
intencje przedsiębiorcze
kursy przedsiębiorczości
teoria planowanego zachowania
postawy
normy subiektywne
kontrola behawioralna
entrepreneurial education
entrepreneurial intention
attitude
subjective norms
entrepreneurship programmes
Theory of Planned Behavior
Perceived Behavioral Control
Opis:
The purpose of this paper is to investigate the impact of entrepreneurship education on university students’ entrepreneurial intentions. The study attempts to empirically determine the extent to which entrepreneurship education can shape students’ entrepreneurial intentions. A questionnaire-based survey is used to test the hypotheses examined. A pre-test-post-test group design was adopted to measure the change in students’ attitude, subjective norms, Perceived Behavioural Control (PBC) and entrepreneurial intention using the Theory of Planned Behavior (TPB). A questionnaire was completed by 210 business students (out of 400), studying at a public university based in Athens, Greece, at the beginning of their 13-week compulsory course in Entrepreneurship. A second questionnaire was re-sent to the same students at the end of the course and they were asked to complete it. The second questionnaire was completed by 158 students from the original respondent group. The student participation was voluntary at both times. The sample was a convenience one given that the resources available were limited. The findings lent support to the theory and the hypotheses proposed. The authors report that attitude, PBC and entrepreneurial intention can be positively influenced by entrepreneurial education.
Celem artykułu jest zbadanie wpływu edukacji z zakresu przedsiębiorczości na intencje przedsiębiorcze i plany zawodowe studentów. W pracy podjęto próbę empirycznego określenia stopnia, w jakim edukacja z zakresu przedsiębiorczości może kształtować intencje przedsiębiorcze studentów. Do weryfikacji postawionych hipotez wykorzystano badanie ankietowe. W celu pomiaru zmiany w postawach studentów, subiektywnych normach, postrzeganej kontroli behawioralnej i zamiarach związanych z przedsiębiorczością przyjęto pracę na modelu grupy przed-testowej i post-testowej, wykorzystując Teorię Planowanego Zachowania (TPZ). Kwestionariusz wypełniło 210 studentów kierunków związanych z przedsiębiorczością (z 400), studiujących na publicznym uniwersytecie w Atenach (Grecja), rozpoczynających trzynastotygodniowy obowiązkowy kurs przedsiębiorczości. Drugi kwestionariusz został ponownie wysłany do tych samych studentów pod koniec tego kursu z prośbą o jego wypełnienie. Został on wypełniony przez 158 studentów z pierwotnej grupy respondentów. W obu przypadkach udział studentów był dobrowolny. Dobór próby miał charakter wygodny, ze względu na ograniczoną ilość dostępnych zasobów. Ustalenia badawcze potwierdziły teorię i wysunięte hipotezy. Autorzy wskazują, że edukacja w zakresie przedsiębiorczości może mieć pozytywny wpływ na postawę studentów, postrzeganą kontrolę behawioralną i ich intencje przedsiębiorcze dotyczące przyszłości.
Źródło:
Zeszyty Naukowe Małopolskiej Wyższej Szkoły Ekonomicznej w Tarnowie; 2020, 48, 4; 49-58
1506-2635
Pojawia się w:
Zeszyty Naukowe Małopolskiej Wyższej Szkoły Ekonomicznej w Tarnowie
Dostawca treści:
Biblioteka Nauki
Artykuł
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