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Tytuł:
Elevator trip distribution for inconsistent passenger input-output data
Autorzy:
Yoneda, K.
Powiązania:
https://bibliotekanauki.pl/articles/375933.pdf
Data publikacji:
2007
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
traffic problems
inverse problems
estimation
operation research
Opis:
Accurate traffic data are the basis for group control of elevators and its performance evaluation by trace driven simulation. The present practice estimates a time series of inter-floor passenger traffic based on commonly available elevator sensor data. The method demands that the sensor data be transformed into sets of passenger input-output data which are consistent in the sense that the transportation preserves the number of passengers. Since observation involves various behavioral assumptions, which may actually be violated, as well as measurement errors, it has been necessary to apply data adjustment procedures to secure the consistency. This paper proposes an alternative algorithm which reconstructs elevator passenger origin-destination tables from inconsistent passenger input-output data sets, thus eliminating the ad hoc data adjustment.
Źródło:
Decision Making in Manufacturing and Services; 2007, 1, 1-2; 175-190
1896-8325
2300-7087
Pojawia się w:
Decision Making in Manufacturing and Services
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The grouping differential evolution algorithm for multi-dimensional optimization problems
Autorzy:
Piotrowski, A. P.
Napiórkowski, J. J.
Powiązania:
https://bibliotekanauki.pl/articles/969839.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
differential evolution
multidimensional problems
multimodal problems
metaheuristics
Opis:
A variant of the Differential Evolution method is presented. The classical Differential Evolution approach is very successful for simple problems, but does not perform well enough for troublesome multi-dimensional non-convex continuous functions. To overcome some of the drawbacks, the Grouped Multi-Strategy Differential Evolution algorithm is proposed here. The main idea behind the new approach is to exploit the knowledge about the local minima already found in different parts of the search space in order to facilitate further search for the global one. In the proposed method, the population is split into four groups: three of them rarely communicate with the others, but one is allowed to gain all available knowledge from the whole population throughout the search process. The individuals simultaneously use three different crossover/mutation strategies, which makes the algorithm more flexible. The proposed approach was compared with two Differential Evolution based algorithms on a set of 10- to 100-dimensional test functions of varying difficulty. The proposed method achieved very encouraging results; its advantage was especially significant when more difficult 50- and 100-dimensional problems were considered. When dividing population into separate groups, the total number of individuals becomes a crucial restriction. Hence, the impact of the number of individuals on the performance of the algorithms was studied. It was shown that increasing the number of individuals above the number initially proposed for classic Differential Evolution method is in most cases not advantageous and sometimes may even result in deterioration of results.
Źródło:
Control and Cybernetics; 2010, 39, 2; 527-550
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wybrane problemy rozwoju gospodarczego układów przestrzennych
Selected issues of economic development of spatial systems
Autorzy:
Zioło, Zbigniew
Rachwał, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/438175.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Pedagogiczny im. Komisji Edukacji Narodowej w Krakowie
Tematy:
problemy
problems
Źródło:
Prace Komisji Geografii Przemysłu Polskiego Towarzystwa Geograficznego; 2019, 33, 1
2080-1653
Pojawia się w:
Prace Komisji Geografii Przemysłu Polskiego Towarzystwa Geograficznego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Approximation of the eigenvalue problem for elliptic operator by finite element method with numerical integration
Autorzy:
Lewińska, E.
Powiązania:
https://bibliotekanauki.pl/articles/748226.pdf
Data publikacji:
1994
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
Eigenvalue problems
Opis:
.
The author considers the effect of numerical integration in the case of solving a two-dimensional eigenvalue problem for the second-order elliptic differential operator via the finite element method. It is proved that the optimal estimates for eigenfunctions (namely, the estimates of the same order as the optimal estimates for the classical finite element approximation without numerical integration) are valid under the assumption that the precision of the numerical quadrature is the same as that for the corresponding boundary value problem.
Źródło:
Mathematica Applicanda; 1994, 23, 37
1730-2668
2299-4009
Pojawia się w:
Mathematica Applicanda
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A principal for safe vehicle traffic in a section of a road on which passing is prohibited
Autorzy:
Dziuda, Dariusz
Powiązania:
https://bibliotekanauki.pl/articles/747966.pdf
Data publikacji:
1982
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
Traffic problems
Opis:
.
The paper deals with the determination of the safe distance between vehicles in a section of a road, on which passing is prohibited. Nonzero length of each vehicle is assumed. First the minimal safe distance is evaluated in the case when two vehicles, P 1 followed by P 2 , have equal speeds and suddenly P 1 starts to brake. In the rest of the paper the case of forced speed reduction of the faster vehicle P 2 is considered. The main result of this section is the formula for the least safe distance between P 1 and P 2 on which P 2 is obliged to apply the brake. This distance ensures the safety during the whole time interval when the speed of P 2 exceeds that of P 1 including the situation of unexpected applying of the brake by the vehicle P 1 .
Źródło:
Mathematica Applicanda; 1982, 10, 18
1730-2668
2299-4009
Pojawia się w:
Mathematica Applicanda
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Solving boundary value problems in the open source software R: package bvpSolve
Autorzy:
Mazzia, F.
Cash, J. R.
Soetaert, K.
Powiązania:
https://bibliotekanauki.pl/articles/255850.pdf
Data publikacji:
2014
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
ordinary differential equations
boundary value problems
singular perturbation problems
test problems
Fortran
R
Opis:
The R package bvpSolve for the numerical solution of Boundary Value Problems (BVPs) is presented. This package is free software which is distributed under the GNU General Public License, as part of the R open source software project. It includes some well known codes to solve boundary value problems of ordinary differential equations (ODEs) and differential algebraic equations (DAEs). In addition to the packages already available for solving initial value problems, the new package now allows non expert users to efficiently solve boundary value problems in the problem solving environment R.
Źródło:
Opuscula Mathematica; 2014, 34, 2; 387-403
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Approximation of eigenvalues of nonselfadjoint problems on an infinite interval
Autorzy:
Regińska, Teresa
Powiązania:
https://bibliotekanauki.pl/articles/748435.pdf
Data publikacji:
1979
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
Linear boundary value problems,Linear equations,Eigenvalue problems
Opis:
W pracy badane są zagadnienia własne Lu=a u. Dowodzi się, iż wartości własne tego zagadnienia są aproksymowane przez wartości własne pewnych zagadnień własnych na przedziałach skończonych.
The author treats the problem of approximation of the eigenvalues of the nonselfadjoint problem Lu=λu, u(0)=0, u∈L2(0,∞), where L=−d2/dt2+p(x), domL={u∈L2(0,∞):du/dt continuous, d2u/dt2∈L2(0,∞), u(0)=0}. The same question for a selfadjoint problem was answered in the author's recent paper.
Źródło:
Mathematica Applicanda; 1979, 7, 14
1730-2668
2299-4009
Pojawia się w:
Mathematica Applicanda
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Extensions of the control variational method
Autorzy:
Sprekels, J.
Tiba, D.
Powiązania:
https://bibliotekanauki.pl/articles/206097.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
optimal control
calculus of variations
contact problems
evolution problems
Opis:
The control variational method is a development of the variational approach, based on optimal control theory. In this work, we give an application to a variational inequality arising in mechanics and involving unilateral conditions both in the domain and on the boundary, and we explore the extension of the method to time-dependent problems.
Źródło:
Control and Cybernetics; 2011, 40, 4; 1099-1108
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimal control for a nonstationary linear system with a quadratic cost functional
Autorzy:
Czornik, Adam
Powiązania:
https://bibliotekanauki.pl/articles/747535.pdf
Data publikacji:
1997
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
Optimal stochastic control
Problems involving randomness
Linear-quadratic problems
Opis:
.
This paper is about optimal control of infinite-horizon nonstationary stochastic linear processes with a quadratic cost criterion. The synthesis problem of optimal control is solved under the assumptions that the criterion is an average expected cost and that the process' matrices possess limits for the time approaching infinity. Furthermore, the limit matrices are such that the "limit" process is both observable and controllable. The paper documents existence of an optimal feedback control policy. The policy is such that the gain matrix is a (scaled) solution to a Riccati stationary matrix equation. The equation is stationary in that its coefficients are the limits of the process' non-stationary matrices.
Źródło:
Mathematica Applicanda; 1997, 26, 40
1730-2668
2299-4009
Pojawia się w:
Mathematica Applicanda
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Safety technical problems associated with the storage of liquefied natural gas (LNG)
Autorzy:
Oliinyk, A.
Łaciak, M.
Powiązania:
https://bibliotekanauki.pl/articles/298850.pdf
Data publikacji:
2013
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
LNG
storage problems
Opis:
Liquefied natural gas (LNG) due to its extremely favorable properties is considered to be one of the most convenient sources of energy, both the transport, storage and distribution. However, these same properties, and factors which represent the LNG as convenient, such as: a very low temperature (-162 degrees of Celsius), a very large increase in the volume of the evaporation (about 600 times) and also create a potential threats The greatest potential threats are in areas where LNG is a very large quantities for a long period of time. The facts presented above show that there is potentially the greatest threat to the storage of LNG. Leaks, clouds LNG vapor, explosions, low temperature, and "rollover" are the most dangerous potential hazards that occur during storage of LNG. Each of these risks can be avoided. This is achieved by the use of appropriate materials for tanks and equipment, as well as the proper and adequate execution of engineering design at each stage of technology. Proper selection of vessel design and materials, and the use of appropriate methods of combining them decide on a safe and long life tanks.
Źródło:
AGH Drilling, Oil, Gas; 2013, 30, 1; 181-189
2299-4157
2300-7052
Pojawia się w:
AGH Drilling, Oil, Gas
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Extrema problems solved in GeoGebra
Extremální úlohy řešené v programu GeoGebra
Autorzy:
Morávková, Z.
Volný, P.
Powiązania:
https://bibliotekanauki.pl/articles/113399.pdf
Data publikacji:
2017
Wydawca:
STE GROUP
Tematy:
GeoGebra
extrema problems
Opis:
The solving of applied problems is a reasonable way to gain better understanding of mathematical concepts, especially for future engineers. GeoGebra is a very useful tool for modeling these problems thanks to its interactivity.
Rešení aplikovaných úloh je jeden z vhodných zpusobu pro lepší pochopení matematických konceptu predevším pro budoucí inženýry. Díky své interaktivite je GeoGebra velmi užitecný nástroj pro modelování takových úloh.
Źródło:
Systemy Wspomagania w Inżynierii Produkcji; 2017, 6, 4; 294-299
2391-9361
Pojawia się w:
Systemy Wspomagania w Inżynierii Produkcji
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Vision problems in children - a review
Autorzy:
Kourkouta, L.
Frantzana, E.
Iliadis, Ch.
Ouzounakis, P.
Monios, A.
Powiązania:
https://bibliotekanauki.pl/articles/1918528.pdf
Data publikacji:
2017-11-12
Wydawca:
Uniwersytet Medyczny w Białymstoku
Tematy:
vision problems
children
Opis:
Introduction: A vision problem is a condition which involves not only visual difficulty but also blindness. Purpose: The purpose of this short review study is the early recognition of vision problems in children, the proper treatment as well as their prevention. Materials and methods: The material of the study has been recent articles on the subject that have been found mainly in the electronic database Medline, (HEAL-Link), with the following keywords: children, vision impairment, blindness, treatment, prevention. Review: A high risk group of individuals that frequently presents ophthalmic severe lesions leading to blindness consists of children with prenatal and perinatal adverse effects. Conclusions: Education gives the opportunity of co-existence between the blind and people who are able to see. This is the path to social inclusion of individuals with vision problems. Moreover, it is estimated these two groups would have more points in common than differences between them through this experience.
Źródło:
Progress in Health Sciences; 2017, 7(2); 80-84
2083-1617
Pojawia się w:
Progress in Health Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multigrid method for numerical solution of ordinary differential equations
Autorzy:
Kozakiewicz, J. M.
Mika, J. R.
Powiązania:
https://bibliotekanauki.pl/articles/747463.pdf
Data publikacji:
1992
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
Initial value problems
Opis:
.
We consider the initial value problem for systems of ordinary differential equations such that the solution vector can be split into subvectors and each subvector represented as a product of a scalar amplitude and a shape vector which changes slowly with time. The equations for the shape vectors can be solved with much larger time steps than those required for the original equations. The numerical results show that a substantial reduction in the computing time may be achieved
Źródło:
Mathematica Applicanda; 1992, 21, 35
1730-2668
2299-4009
Pojawia się w:
Mathematica Applicanda
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The algorithms of selected methods for the two-point boundary value problem for the equation - u + g(x)u = f(x)
Autorzy:
Kołodziejczyk, Janusz
Grabarski, Adam
Powiązania:
https://bibliotekanauki.pl/articles/747914.pdf
Data publikacji:
1990
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
Boundary value problems
Opis:
.
In this paper four algorithms of methods of approximate solution of the two-point boundary value problem for the equation - u” + g(x)u = f(x) are given and compared. The finite difference, collocation, finite element and collocation-Galerkin methods are considered. Numerical results are presented. For sufficiently regular functions u,f and g the finite difference method is the most effective.
Źródło:
Mathematica Applicanda; 1990, 18, 32
1730-2668
2299-4009
Pojawia się w:
Mathematica Applicanda
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Challenges to American Hegemony: Realizing and Responding
Autorzy:
Nguyen, Hang
Powiązania:
https://bibliotekanauki.pl/articles/531283.pdf
Data publikacji:
2016-03-15
Wydawca:
Fundacja Instytut Nauki o Polityce
Tematy:
American hegemony
domestic problems
psychologic problems
emerging powers
power diffusion
Opis:
This article analyzes the challenges to American hegemony in the contemporary world order. It will demonstrate that the rise of the rest including China and India, the possibilities of a massive military attack and an economic collapse on American soil are merely exaggerated challenges to American hegemonic position. The challenges that have great potential to cut into American hegemony are very internal including American domestic and psychologic problems. Looking at the future of American hegemony, the article highlights that the United States still has overwhelming power to sustain its hegemony in the foreseeable time. Yet it is crucially important for American leaders to realize and effectively deal with the imminent challenges to its power. Also, six policy recommendations are made for the United States to endure its hegemony in the contemporary world order.
Źródło:
Polish Journal of Political Science; 2016, 2, 1; 63-91
2391-3991
Pojawia się w:
Polish Journal of Political Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Collocation methods for the solution of eigenvalue problems for singular ordinary differential equations
Autorzy:
Auzinger, W.
Karner, E.
Koch, O.
Weinmuller, E.
Powiązania:
https://bibliotekanauki.pl/articles/255635.pdf
Data publikacji:
2006
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
polynomial collocation
singular boundary value problems
linear and nonlinear eigenvalue problems
Opis:
We demonstrate that eigenvalue problems for ordinary differential equations can be recast in a formulation suitable for the solution by polynomial collocation. It is shown that the well-posedness of the two formulations is equivalent in the regular as well as in the singular case. Thus, a collocation code equipped with asymptotically correct error estimation and adaptive mesh selection can be successfully applied to compute the eigenvalues and eigenfunctions efficiently and with reliable control of the accuracy. Numerical examples illustrate this claim.
Źródło:
Opuscula Mathematica; 2006, 26, 2; 229-241
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sprawiedliwe nierówności a aksjologia ładu instytucjonalnego
Justice Inequalities and the Axiology of Institutional Order
Autorzy:
Woźniak, Michał Gabriel
Powiązania:
https://bibliotekanauki.pl/articles/964283.pdf
Data publikacji:
2008-05-15
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
economics
ethics
global problems
Opis:
The author of article proves that in the era of the globalization the institutional order of national economy is influenced by the distorted competition which results in domination of the managers and technicians of great corporations. It is their businesses that define the economic policy. In the world of asymmetric information, oligopolistic competition, political market and progressive commercialization of the axiological sphere the rules of thinking and acting are merely reduced to the strategy of self-advantage. This situation results in ineffective institutional protection at the global, regional and national levels. To remove social inequalities effectively it is necessary to have control over the dominating groups in society and to develop coherent norms of institutional protection. There is also a need for the development of human capital and its modernization as a common notion of moral values of society and the individual.
Źródło:
Annales. Etyka w Życiu Gospodarczym; 2008, 11, 1
1899-2226
2353-4869
Pojawia się w:
Annales. Etyka w Życiu Gospodarczym
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Проблемы синонимии в двуязычном аспекте
Synonimy problems in bilingual aspects
Autorzy:
Szkapienko, Tatiana
Powiązania:
https://bibliotekanauki.pl/articles/481835.pdf
Data publikacji:
2011-12-01
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie
Tematy:
Synonimy problems
bilingual aspects
Opis:
The article deals with the problem of synonimy from the point of view of Polish language asforeign one. Some particular stereotypes of synonyms representation in the Polish synonymicdictionaries are analyzed. The necessity of new type manuals which combine features of thedictionary and manual is proved to insure correct using of the words which are interpreted byforeign students in the light of a native language interference as semantic synonyms.
Źródło:
Acta Polono-Ruthenica; 2011, 1, XVI; 441-445
1427-549X
Pojawia się w:
Acta Polono-Ruthenica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Threats to the environment in the areas of abandoned extraction of hydrocarbon deposits
Autorzy:
Rybicki, Cz.
Winid, B.
Solecki, T.
Powiązania:
https://bibliotekanauki.pl/articles/299032.pdf
Data publikacji:
2015
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
abandoned wells
environmental problems
Opis:
The environmental problems in past mining areas, where the production process was ended, are connected with contaminations coming from past extraction processes and the risks relating to the abandonment of wells and deposits. The risk could be variable depending on such factors as the geological formation and hydrogeological conditions in the analyzed area, and the condition of abandoned wells. The main source of contamination could be improperly sealed abandoned wells and unplugged abandoned oil and gas wells. The environmental problems could be particularly concern on the area of old historical extraction sites. There are some hydrocarbon deposits, where production i s endedand still it is possible to see places of wells and remains of an old oilfield infrastructure. Unplugged or improperly sealed wells can result in stray gas migration or contamination of soil, ground and surface and ground waters. The end of well exploitation may cause the risk associated to the restoration of formation pressure. This could be the reason of uncontrolled discharge of gaseous and liquid hydrocarbons into shallow depths. Returning to the extraction from some deposits could reduce the formation pressure and constrain uncontrollable leakages of hydrocarbons. This option seems to be environmentally friendly. Authors of the paper made efforts to evaluate the scale and the range of mentioned disadvantageous phenomena.
Źródło:
AGH Drilling, Oil, Gas; 2015, 32, 1; 103-120
2299-4157
2300-7052
Pojawia się w:
AGH Drilling, Oil, Gas
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Solving Emotional Problems of Pupils at Primary Schools
Autorzy:
Adamík Šimegová, Miroslava
Powiązania:
https://bibliotekanauki.pl/articles/1199045.pdf
Data publikacji:
2011-06-30
Wydawca:
Akademia Ignatianum w Krakowie
Tematy:
emotional problems of children
behavioural problems of pupils
behavioural and emotional disorders
Opis:
This contribution deals with the current issue of emotional problems and disorders of pupils at primary school from the point of view of the specific tasks and their solutions (prevention, diagnostics, counselling, intervention). It clarifies some specific emotional problems of pupils, defines them from the point of view of comparison of emotional disorders and brings findings from this particular problem coming from case studies. In this contribution we also discuss some specifics and problems of work of professional school staff at primary school, mainly school psychologist, in the field of solving emotional problems of pupils at primary school.
Źródło:
Horyzonty Wychowania; 2011, 10, 19; 149-166
1643-9171
2391-9485
Pojawia się w:
Horyzonty Wychowania
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Linear Sturm-Liouville problems with Riemann- Stieltjes integral boundary conditions
Autorzy:
Kong, Q.
George, T. E. S.
Powiązania:
https://bibliotekanauki.pl/articles/254797.pdf
Data publikacji:
2018
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
nodal solutions
integral boundary value problems
Sturm-Liouville problems
eigenvalues
matching method
Opis:
We study second-order linear Sturm-Liouville problems involving general homogeneous linear Riemann-Stieltjes integral boundary conditions. Conditions are obtained for the existence of a sequence of positive eigenvalues with consecutive zero counts of the eigenfunctions. Additionally, we find interlacing relationships between the eigenvalues of such Sturm-Liouville problems and those of Sturm-Liouville problems with certain two-point separated boundary conditions.
Źródło:
Opuscula Mathematica; 2018, 38, 4; 557-571
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Misfit landforms imposed by ill-conditioned inverse parametric problems
Autorzy:
Łoś, M.
Smołka, M.
Schaefer, R.
Sawicki, J.
Powiązania:
https://bibliotekanauki.pl/articles/305739.pdf
Data publikacji:
2018
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
taxonomy of ill-conditioned problems
ill-posed global optimization problems
fitness landscapes
Opis:
In this paper, we put forward a new topological taxonomy that allows us to distinguish and separate multiple solutions to ill-conditioned parametric inverse problems appearing in engineering, geophysics, medicine, etc. This taxonomy distinguishes the areas of insensitivity to parameters called the landforms of the misfit landscape, be it around minima (lowlands), maxima (uplands), or stationary points (shelves). We have proven their important separability and completeness conditions. In particular, lowlands, uplands, and shelves are pairwise disjoint, and there are no other subsets of the positive measure in the admissible domain on which the misfit function takes a constant value. The topological taxonomy is related to the second, “local” one, which characterizes the types of ill-conditioning of the particular solutions. We hope that the proposed results will be helpful for a better and more precise formulation of ill-conditioned inverse problems and for selecting and profiling complex optimization strategies used in solving these problems.
Źródło:
Computer Science; 2018, 19 (2); 157-178
1508-2806
2300-7036
Pojawia się w:
Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Existence, uniqueness and convergence of simultaneous distributed-boundary optimal control problems
Autorzy:
Gariboldi, C. M.
Tarzia, D. A.
Powiązania:
https://bibliotekanauki.pl/articles/206574.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
simultaneous optimal control problems
mixed elliptic problems
optimality conditions
elliptic variational equalities
Opis:
We consider a steady-state heat conduction problem P for the Poisson equation with Mied Bondary conditions in a bounded multidimensional domain Ω. We also consider a family of problems Pα for the same Poisson equation with mixed boundary conditions, α > 0 being the heat transfer coefficient defined on a portion Γ1 of the boundary. We formulate simultaneous distributed and Neumann boundary optimal control problems on the internal energy g within Ω and the heat flux q, defined on the complementary portion Γ2 of the boundary of Ω for quadratic cost functional. Here, the control variable is the vector (g,q). We prove existence and uniqueness of the optimal control (g,q) for the system state of P, and (gα,qα) for the system state of Pα, for each α > 0, and we give the corresponding optimality conditions. We prove strong convergence, in suitable Sobolev spaces, of the vectorial optimal controls, system and adjoint states governed by the problems Pα to the corresponding vectorial optimal control, system and adjoint states governed by the problem P, when the parameter α goes to infinity. We also obtain estimations between the solutions of these vectorial optimal control problems and the solution of two scalar optimal control problems characterized by fixed g (with boundary optimal control q) and fixed q (with distributed optimal control g), respectively, for cases both of α > 0 and α = ∞.
Źródło:
Control and Cybernetics; 2015, 44, 1; 5-17
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Historia sączka, o którym wcześniej nikt nie pomyślał
Story about forgotten drain
Autorzy:
Kowal, M.
Powiązania:
https://bibliotekanauki.pl/articles/144866.pdf
Data publikacji:
2012
Wydawca:
Stowarzyszenie Inżynierów i Techników Komunikacji Rzeczpospolitej Polskiej
Tematy:
problemy gwarancyjne
obiekty inżynierskie
problemy wykonawcze
warranty problems
bridge construction
realization problems
Opis:
Artykuł opisuje historię prac wykonanych przy usunięciu problematycznego, ze względów użytkowych i przede wszystkim estetycznych, czynnego wycieku wody spod kanału odwodnienia liniowego na jednym z wiaduktów w Lublinie. Opisano objawy, zakładane przyczyny oraz wykonane prace naprawcze.
Frost actions have influence not only on relief transformation, but also on vegetation, and above all, on infrastructure elements. In this paper methods to counteract results of frost action are presented. Mostly they depend on the following factors: grain size, soil humidity and climate. Most popular methods to counteract frost action processes are: material replacement method, insolation, water interception, chemical methods, ground freezing, dynamic exchange, temporary overload and relief, injection and changing road level.
Źródło:
Drogownictwo; 2012, 7-8; 260-263
0012-6357
Pojawia się w:
Drogownictwo
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Beyond Case Studies: Expanding the Constructionist Framework for Social Problems Research
Autorzy:
Best, Joel
Powiązania:
https://bibliotekanauki.pl/articles/2107095.pdf
Data publikacji:
2015-04-30
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
Case Studies
Domain Expansion
Social Constructionism
Social Problems
Social Problems Cluster
Waves
Opis:
Most constructionist analyses of social problems are case studies; these focus attention on the particulars of the case at hand. Analysts have devoted less attention to the ways cases can be connected. This paper presents a typology of such connections, based on five elements: the problem, the frame, the claims-makers, place, and time. The typology identifies ways each of these elements can serve as a basis for connecting different campaigns to construct social problems.
Źródło:
Qualitative Sociology Review; 2015, 11, 2; 18-33
1733-8077
Pojawia się w:
Qualitative Sociology Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Problems and Needs of the Families of Antiterrorist Operation Participants: Results of In-depth Interviews
Autorzy:
Dulia, Alina V.
Liakh, Tetiana L.
Veretenko, Tetiana G.
Powiązania:
https://bibliotekanauki.pl/articles/1967765.pdf
Data publikacji:
2019-03-31
Wydawca:
Wydawnictwo Adam Marszałek
Tematy:
families of participants of anti-terrorist operation (ATO)
psychological problems
financial problems
problems with paperwork
problems with the upbringing of children
needs of family members of ATO participants
Opis:
The article explores the key issues and needs of families of participants in anti-terrorist operation (ATO). The article defines and characterizes several types of families of ATO participants, who took part in an interview. Based on in-depth interviews and further analysis, the authors identified four categories of problems of these families, e.g., psychological, financial, legal, and problems with raising children. It was determined that violations of the life of the families whose members were ATO participants were caused not only by family-specific problems but also by several other factors. Based on the identified specific problems, the authors identified the main needs of the families of the members of antiterrorist operations.
Źródło:
The New Educational Review; 2019, 55; 220-230
1732-6729
Pojawia się w:
The New Educational Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Trudności wychowawcze i edukacyjne dzieci z rodzin wieloproblemowych
Problems of upbringing and education among children from multi-problem families
Autorzy:
Ruszkowska, Marzena
Powiązania:
https://bibliotekanauki.pl/articles/565509.pdf
Data publikacji:
2016
Wydawca:
Akademia Bialska Nauk Stosowanych im. Jana Pawła II w Białej Podlaskiej
Tematy:
rodzina wieloproblemowa
trudności wychowawcze
trudności edukacyjne
multi-problem families
upbringing problems
education problems
Opis:
Rodzina jest swoistym środowiskiem wychowawczym, składającym się z szeregu elementów, w którym najważniejszym są: interakcje zachodzące między poszczególnymi członkami rodziny, co ma ogromny wpływ na formowanie osobowości dzieci i młodzieży. Połączenie różnego rodzaju niewydolności ze strony rodziców, brak podstawowych umiejętności opiekuńczo – wychowawczych powoduje niejednokrotnie nawarstwianie się problemów związanych z wychowaniem potomstwa. Istotna wydaje się więc kwestia pojawiających się trudności dydaktycznych i wychowawczych u dzieci z rodzin wieloproblemowych. Badania dla potrzeb publikacji przeprowadzono w 28 rodzinach zamieszkujących tereny wiejskie powiatu bialskiego. Analizą objęto sytuację szkolną i wychowawczą 13 chłopców i 15 dziewcząt w wieku 7-18 lat. Artykuł zawiera omówienie wyników badań przeprowadzonych jesienią 2014 roku.
The family is a kind of educational environment, consisting of a number of elements, in which the most important are the interactions between different members of the family as they have a huge impact on the formation of children and adolescents’ personalities. The combination of different types of failure on the part of parents, lack of basic educational and upbringing skills - will often cause build-up problems in raising children. Therefore, the issue of the difficulties in education and upbringing of children from multi- problem families seems important. The research included in the publication was carried out in 28 families living in rural areas of Biała Podlaska administrative district. The analysis concerns school and educational situations of 13 boys and 15 girls aged 7-18 years. The article finishes with a discussion of the results of the survey conducted in the autumn of 2014.
Źródło:
Rozprawy Społeczne; 2016, 10, 2; 56-61
2081-6081
Pojawia się w:
Rozprawy Społeczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effective Thermal Characteristics Synthesis Microlevel Models in the Problems of Composite Materials Optimal Design
Autorzy:
Jaworski, N.
Powiązania:
https://bibliotekanauki.pl/articles/410799.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Oddział w Lublinie PAN
Tematy:
composite materials
optimal design
microlevel models
finite element method
coupled problems
multiphysics problems
Opis:
The composite materials optimal design problem which taking into account the thermal characteristics is the part of an actual structural design task. A wide range of variety of such material structures and the complexity of modeling some physical phenomena (such as the phenomenon of those structures effective characteristics percolation threshold appearing) requires a high level of detail in physico-mathematical models. Here, in this paper, were analyzed the role and place of physico-mathematical microlevel models in problems of composite materials optimal design. The methods of such materials representative volume elements construction within the model calculations, which are the key step in the modeling of complex structures variety, also were analyzed. Basing on the usage of finite element method for modeling of stationary heat conduction and elasticity linear problems was proposed the combined formalization of coupled thermoelasticity problems simulation method in complex structured composite materials, which is especially useful when used in engineering applications which provide a high level of abstraction. Basing on the analogy method and theory of similarity were developed the complex structured composite materials microlevel models, which allow one to synthesize and then re-use in the problems of composite materials optimal design, such effective thermal characteristics as thermal conduction coefficient, Young's modulus, Poisson's ratio and temperature coefficient of linear expansion. This gives the ability to avoid of classical complex mathematical homogenization processes or real experiments. The method and models were successfully implemented by using of highperformance parallel and distributed computing technologies in heterogeneous computing environments, as evidenced by the simulation results.
Źródło:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes; 2015, 4, 2; 3-12
2084-5715
Pojawia się w:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Foundations of the theory of open waveguides
Autorzy:
Nosich, A.I.
Powiązania:
https://bibliotekanauki.pl/articles/308738.pdf
Data publikacji:
2000
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
open waveguide theory
eigenvalue problems
Opis:
The theory of electromagnetic wave eigenmodes propagating on open dielectric and metallic waveguides has been reviewed. The main steps of different theoretical approaches to the problem are outlined and discussed. The unsolved problems and also directions of future development are pointed out.
Źródło:
Journal of Telecommunications and Information Technology; 2000, 1-2; 42-45
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Self-sensing teleoperation system based on 1-dof pneumatic manipulator
Autorzy:
Saków, M.
Miądlicki, K.
Parus, A.
Powiązania:
https://bibliotekanauki.pl/articles/385020.pdf
Data publikacji:
2017
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
telerobotics
modeling
inverse problems
manipulators
Opis:
Paper presents a novel approach to a control design of bilateral teleoperation systems with force-feedback. The problem statement, analysis of research achievements to date, and the scope of the study are presented. The new design of a control unit for a master-slave system with force-feedback is presented on a simple and ideal 1-DOF bilateral teleoperation system. System control unit was based on an inverse model. The model was used to reduce value of force in the force-feedback communication channel, that the system might generate in freemotion. A substantial part of the paper is focused on the development of a mathematical model covering phenomena occurring in the investigated control scheme. The new approach was validated on a test-stand of a rotating non-linear pneumatic manipulator arm. Two linear pneumatic actuators were used in the drive system. The paper presents the modeling procedure of the experimental setup and the model used in the study. Three experiments are described to demonstrate the new control approach to master-slave objects with force-feedback. The paper contains conclusions regarding the control system and the experimental setup.
Źródło:
Journal of Automation Mobile Robotics and Intelligent Systems; 2017, 11, 1; 64-76
1897-8649
2080-2145
Pojawia się w:
Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On reconstructing an unknown coordinate of a nonlinear system of differential equations
Autorzy:
Blizorukowa, M.
Kuklin, A.
Maksimov, V
Powiązania:
https://bibliotekanauki.pl/articles/256042.pdf
Data publikacji:
2014
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
ordinary differential equations
inverse problems
Opis:
The paper discusses a method of auxiliary controlled models and the application of this method to solving problems of dynamical reconstruction of an unknown coordinate in a nonlinear system of differential equations. The solving algorithm, which is stable with respect to informational noises and computational errors, is presented.
Źródło:
Opuscula Mathematica; 2014, 34, 2; 257-269
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On a class of nonlinear ellipticequations in Hilbert spaces
Autorzy:
Fijałkowski, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/1311662.pdf
Data publikacji:
1994
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
nonlinear elliptic boundary value problems
Opis:
We consider elliptic nonlinear equations in a separable Hilbert space and their solutions in spaces of Sobolev type.
Źródło:
Annales Polonici Mathematici; 1994, 59, 3; 203-213
0066-2216
Pojawia się w:
Annales Polonici Mathematici
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Security dimensions of the current demographic problems
Autorzy:
Čajka, Peter
Kazansky, Rastislav
Powiązania:
https://bibliotekanauki.pl/articles/1878651.pdf
Data publikacji:
2014
Wydawca:
Wyższa Szkoła Bezpieczeństwa Publicznego i Indywidualnego Apeiron w Krakowie
Tematy:
demographic problems
population growth
security
Opis:
These days, demographic problems – especially population growth and its non-military aspect of security belong to the one of the most crucial problems in relation with the global problems of humankind. The problem of the world population belongs to one of the current key global problems of humankind. The fastening increase of the world population is a serious problem of the contemporary world. This problem’s gravity was realized by humankind at the beginning of the 60-ties of the 20th century, whereupon demographic development has achieved a great significance since then. The term- population problem- has thus become a subject for many scientific discussions. The population influenced and still influences the functioning of society, therefore great attention to demographic processes was paid in the past and is still being paid even nowadays.
Źródło:
Security Dimensions; 2014, 11(11); 142-161
2353-7000
Pojawia się w:
Security Dimensions
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Женщина телохранитель в охране VIP - персон
Autorzy:
Uryadnikova, Inga
Zaplatynskyi, Vasyl
Powiązania:
https://bibliotekanauki.pl/articles/1878653.pdf
Data publikacji:
2014
Wydawca:
Wyższa Szkoła Bezpieczeństwa Publicznego i Indywidualnego Apeiron w Krakowie
Tematy:
demographic problems
population growth
security
Opis:
В современном мире услугами телохранителей пользуются многие авторитетные люди из области политики, бизнеса и шоу-бизнеса. В современных условиях «бодигард» должен уметь вычислять любую опасность, оставаясь при этом максимально незаметным.
Źródło:
Security Dimensions; 2014, 11(11); 253-259
2353-7000
Pojawia się w:
Security Dimensions
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
PRINCIPLE OF CARE WITHOUT GENDER BORDERS IN ISSUES OF SECURITY AS A NEW SOCIAL AND POLITICAL PRACTICE
Autorzy:
Mária, Martinská,
Powiązania:
https://bibliotekanauki.pl/articles/891773.pdf
Data publikacji:
2018-08-22
Wydawca:
Wyższa Szkoła Bezpieczeństwa Publicznego i Indywidualnego Apeiron w Krakowie
Tematy:
security
gender equality
security problems
Opis:
The current social contexts and the resulting social problems and security issues increasingly require the need for human solidarity, understanding, partnership and solidarity. A new concept of security is related to the need to reform and find a new normative framework of such a political vision that would allow policy makers to include the new concept of justice and care without gender-stereotyped predetermination and constraints in their programs and visions and thus also expand the system of political values
Źródło:
Kultura Bezpieczeństwa. Nauka – Praktyka – Refleksje; 2014, 15; 177-187
2299-4033
Pojawia się w:
Kultura Bezpieczeństwa. Nauka – Praktyka – Refleksje
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Solving Delivery Problems in Distribution Systems
Autorzy:
Michlowicz, Edward
Powiązania:
https://bibliotekanauki.pl/articles/504345.pdf
Data publikacji:
2013
Wydawca:
Międzynarodowa Wyższa Szkoła Logistyki i Transportu
Tematy:
optimization
transport tasks
delivery problems
Opis:
The subject matter of this article is the optimization of delivery problems (Vehicle Routing Problems – VRP) with regard to distribution systems. These issues belong to the class of NP-hard problems. Current solutions to various delivery problems (VRP, TSP, MTSP, VRPTW, RDPTW) were analysed. Two examples were presented. In a transport and production task, a marginal cost equalling (MCE) algorithm was used. In the case of a Multi Depot Vehicle Routing Problem (MDVRP), an evolutionary algorithm was used.
Źródło:
Logistics and Transport; 2013, 18, 2; 33-40
1734-2015
Pojawia się w:
Logistics and Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analytic solutions of transcendental equations with application to automatics
Autorzy:
Górecki, H.
Zaczyk, M.
Powiązania:
https://bibliotekanauki.pl/articles/229203.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
extremal problems
characteristic equation
transmittance
Opis:
In the paper the extremal dynamic error x(τ) and the moment of time τ are considered. The extremal value of dynamic error gives information about accuracy of the system. The time τ gives information about velocity of transient. The analytical formulae enable design of the system with prescribed properties. These formulae are calculated due to the assumption that x(τ) is a function of the roots s1, ..., sn of the characteristic equation.
Źródło:
Archives of Control Sciences; 2016, 26, 4; 497-513
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Problemy legalności partii politycznych w Etiopii
The legal problems of political parties in Ethiopia
Autorzy:
Gemechu, Degefe
Powiązania:
https://bibliotekanauki.pl/articles/567158.pdf
Data publikacji:
2009
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie. Instytut Nauk Politycznych
Tematy:
Ethiopia
Political parties
Legal problems
Opis:
This article investigates and assesses the legal problem of political parties in Ethiopia. Ethiopian rulers have denied a legitimate role of political party and saw it as the threat to their power. The evolution of party system in Ethiopia can be divided into three periods: 1. During Emperor Haile Selassie's reign 2. The period of military rule 3. The Ethiopian People's Revolutionary Democratic Front (EPRDF) led Government from 1991 up to the present. The first constitution of Ethiopia (1931), banned the presence of any political organization in Ethiopia. The Emperor was the head of the state, head of the government, and commander-in-chief of the Empire. He had absolute authority over the Imperial Military and bureaucracy. The Emperor had sole power to appoint and dismiss the regional governors and members of parliament. In 1974 the military government brought the absolute monarchical rule to an end. During the military junta all civilian opposition groups had been destroyed or forced underground. In most cases, political opponents were systematically targeted; there were human rights abuses, tens of thousands of people disappeared or were murdered in what was known as the „Red Terror" and hundreds of thousands were imprisoned. After the military government was overthrown by rebel groups in 1991, the Tigray People's Liberation Front (TPLF), created the coalition of EPRDF by involving several ethnic based political parties. During 1990s, a lot of political parties based on ethnic background, were formed. Many of them are delegalized. Those registered legally also cannot run their programme for political power, because of systematic restriction on them. Security forces of the ruling party commit politically motivated arbitrary killings, detention, torture and other forms of human rights abuse on political opponents. Ethiopia is de facto single-party sys- tem in which a dominant single political party forms the government and no other parties are permitted to run candidates for election; unfair laws and practices of the present minority government pre- vent the opposition from legally getting power.
Źródło:
Forum Politologiczne; 2009, 9 - Ugrupowania polityczne i ruchy społeczne w Afryce; 167-185
1734-1698
Pojawia się w:
Forum Politologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A new test for normality and independence
Autorzy:
Ejsmont, Wiktor
Powiązania:
https://bibliotekanauki.pl/articles/421350.pdf
Data publikacji:
2017
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
test
normal distribution
characterization problems
Opis:
In this paper, a new test of normality and independence is proposed. This test is designed through a multivariate empirical characteristic by considering a result form [Ejsmont 2016].
Źródło:
Didactics of Mathematics; 2017, 14(18); 27-32
1733-7941
Pojawia się w:
Didactics of Mathematics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Religious Fundamentalism: Theorethical Problems
Autorzy:
Marczewska-Rytko, Maria
Powiązania:
https://bibliotekanauki.pl/articles/2028551.pdf
Data publikacji:
2007-12-31
Wydawca:
Wydawnictwo Adam Marszałek
Tematy:
religious fundamentalism
theorethical problems
religion
Opis:
The following article will attempt to present characteristics of religious fundamentalism. The task requires addressing terminological and methodological issues, which seem to constitute the weakest link in the overall research of the phenomenon. Even a cursory analysis of the available data points to the fact, that comparative studies are in minority, while an overwhelming majority of all research focuses on particular instances of fundamentalism, most commonly within one specific religion. Three preliminary observations can be made. Firstly, usually the case is that of either methodological maximalism or minimalism. The work edited by Martin E. Marty and R. Scott Appleby Fundamentalisms Observed, significant as it was, can serve as a valid example of maximalist approach. The phenomenon discussed therein is viewed in the broad perspective, thus it becomes almost synonymous to traditionalism, nationalism, orthodoxy or communalism.
Źródło:
Polish Political Science Yearbook; 2007, 36; 215-223
0208-7375
Pojawia się w:
Polish Political Science Yearbook
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimal control of a two-dimensional linear system with a quadratic performance index with constraints on the trajectory and the control
Autorzy:
Biły, Barbara
Powiązania:
https://bibliotekanauki.pl/articles/747527.pdf
Data publikacji:
1997
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
Linear-quadratic problems
Other methods
Opis:
.
The main purpose of this note is to present a method for solving the linear-quadratic optimal regulator for discrete, linear general two-dimensional system with constant coefficients. The quadratic optimal regulator problem can be formulated: find of sequence of control vectors in fixed rectangle, which transfer the system to given final state vector and minimizes the quadratic performance index, with constraints of control and state vector. This problem, by transformation for systemand performance index is reduced to equivalent mathematical programming problem. Necessary and sufficient conditions are established for the existence of a solution to this problem. With slight modifications the considerations can be extended for 2-D systems with variable coefficient and n-D linear systems.
Źródło:
Mathematica Applicanda; 1997, 26, 40
1730-2668
2299-4009
Pojawia się w:
Mathematica Applicanda
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Determining the step of integration for the one-step Bobkovs methods
Autorzy:
Szyszkowicz, Mieczysław
Powiązania:
https://bibliotekanauki.pl/articles/748261.pdf
Data publikacji:
1985
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
Initial value problems
Automated algorithms
Opis:
.
Consider the class of Bobkov methods for solving the IVP: y′=f(x,y), x[a,b]. Four procedures for finding the step size h are presented. It is shown that these Bobkov methods with automatic stepsize control are faster (i.e. need fewer evaluations of f) than the corresponding Runge-Kutta methods.
Źródło:
Mathematica Applicanda; 1985, 13, 25
1730-2668
2299-4009
Pojawia się w:
Mathematica Applicanda
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Poetry in Teaching Grammar to the Advanced Users of Polish as a FL
Autorzy:
Wysocka, Marzena S.
Powiązania:
https://bibliotekanauki.pl/articles/783236.pdf
Data publikacji:
2019
Wydawca:
Wydawnictwo Uniwersytetu Śląskiego
Tematy:
poetry
poems
grammar
grammar problems
Opis:
The article offers an insight into problematic issues the advanced learners of Polish as a FL cope with in terms of grammar in speaking and writing. It opens with a brief insight into teaching literature, poetry including, in a FL classroom. What follows includes types of poems and their potential to be used in the teaching context, mainly when teaching grammar. Having presented  the scope of linguistic problems experienced by the users of Polish as a FL, the type and frequency of grammatical problems are discussed. Polish grammar-based issues the foreigners struggle with constituted the main area of the research conducted among 146 students of the Polish Language Course attending the School of Polish Language and Culture at the University of Silesia in Katowice, Poland. The findings come from oral and written assignments produced by the sample in question, and, most frequently, reflect grammatical mistakes that are persistent and difficult to eliminate from the linguistic repertoire. Given that,  ways of using poetry as a means of a “grammar refresher” are suggested. These include a few examples of activities based on poems to be used  when trying to overcome particular linguistic difficulties, together with implications for teachers raising students’ language awareness and developing reflection on language per se.
Źródło:
Theory and Practice of Second Language Acquisition; 2019, 5, 1; 55-72
2450-5455
2451-2125
Pojawia się w:
Theory and Practice of Second Language Acquisition
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Autonomous walking machines - discussion of the prototyping problems
Autorzy:
Zielińska, T.
Powiązania:
https://bibliotekanauki.pl/articles/200654.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
autonomous walking machines
prototyping problems
Opis:
An improvement of the computer technology caused the progress in building of the developed machines, indispensable in some works which are too dangerous or onerous for humans. The article deals with prototyping problems in constructing autonomous walking machines including design problems, evaluation of required motor power, evaluation of expecting walking velocity as well as the control system design considerations etc., presenting themselves as key factors which must be taken into account while walking robots prototyping.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2010, 58, 3; 443-451
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Unusual Word Problems and the Development of Critical Thinking in Early School Students
Nietypowe zadania tekstowe a rozwijanie krytycznego myślenia uczniów edukacji wczesnoszkolnej
Autorzy:
Nawolska, Barbara
Powiązania:
https://bibliotekanauki.pl/articles/2037947.pdf
Data publikacji:
2021-07-23
Wydawca:
Akademia Ignatianum w Krakowie
Tematy:
myślenie krytyczne
matematyczne zadania tekstowe
zadania nietypowe
critical thinking
mathematical word problems
unusual problems
Opis:
Nowadays, it is increasingly difficult for people to make their way in a rapidly changing world. Critical thinkers are able to function well in such a changing environment and their education should begin in early childhood. This paper presents the results of an experimental study on the development of critical thinking of third grade elementary school students. Unusual word problems with missing or contradictory data, an ambiguous solution, or with unrealistic content (meaningless in real life) served as a tool for developing this type of thinking. These problems provoked the students to think, to critically analyze both the content and data of word problems. This, in turn, helped the students become more reflective, notice missing or contradictory data, ambiguity of a solution or lack of realism, fill in missing data, correct contradictory information and make unrealistic data realistic, as well as seek all possibilities for a solution. Thus, their critical thinking skills developed.
Współcześnie coraz trudniej jest ludziom się odnaleźć w szybko zmieniającej się rzeczywistości. W tak zmiennych warunkach dobrze mogą funkcjonować ludzie myślący krytycznie, a ich kształcenie należy rozpocząć już na etapie wczesnoszkolnym. W artykule zaprezentowane są wyniki eksperymentalnych badań nad rozwijaniem krytycznego myślenia uczniów III klasy szkoły podstawowej. Narzędziem służącym rozwijaniu tego myślenia były nietypowe zadania tekstowe z deficytem lub sprzecznością danych, z niejednoznacznym rozwiązaniem lub o treści nierealistycznej (bezsensowne życiowo). Zadania te prowokowały uczniów do myślenia, do krytycznej analizy treść zadań oraz danych. Dzięki temu uczniowie stali się bardziej refleksyjni, dostrzegali: niedobór lub sprzeczność danych, niejednoznaczność rozwiązania bądź brak realizmu, uzupełniali brakujące dane, korygowali sprzeczne i urealniali nierzeczywiste dane oraz poszukiwali wszelkich możliwości rozwiązania. Tym samym rozwinęła się ich umiejętność krytycznego myślenia.
Źródło:
Edukacja Elementarna w Teorii i Praktyce; 2021, 16, 3(61); 43-56
1896-2327
Pojawia się w:
Edukacja Elementarna w Teorii i Praktyce
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study of ODE limit problems for reaction-diffusion equations
Autorzy:
Simsen, J.
Simsen, M. S.
Zimmermann, A.
Powiązania:
https://bibliotekanauki.pl/articles/1397881.pdf
Data publikacji:
2018
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
ODE limit problems
shadow systems
reaction-diffusion equations
parabolic problems
variable exponents
attractors
upper semicontinuity
Opis:
In this work we study ODE limit problems for reaction-diffusion equations for large diffusion and we study the sensitivity of nonlinear ODEs with respect to initial conditions and exponent parameters. Moreover, we prove continuity of the flow and weak upper semicontinuity of a family of global attractors for reaction-diffusion equations with spatially variable exponents when the exponents go to 2 in $L^\infty(\Omega)$ and the diffusion coefficients go to infinity.
Źródło:
Opuscula Mathematica; 2018, 38, 1; 117-131
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Implementation of the DPA approach in an intercultural context on the example of the ACTTE project
Autorzy:
Kowalczewska-Grabowska, Katarzyna
Borzucka-Sitkiewicz, Katarzyna
Powiązania:
https://bibliotekanauki.pl/articles/22676542.pdf
Data publikacji:
2023-12-31
Wydawca:
Wydawnictwo Adam Marszałek
Tematy:
training
intervention
social problems
Empowerment
interculturalism
Opis:
Due to the emergence of new social problems resulting from weakening pro-integration moods regarding culturally, ethnically, or religiously diverse societies, the Acting in Context by Training the Trainers in Social Empowerment (ACTTE) project was prepared and implemented. The Polish National Agency of Academic Exchange (NAWA) financed the project as part of the International Academic Partnerships program. The project goals were: 1) shaping competencies/skills in the field of DPA (Developing the Power to Act) in organized training participants (NGO employees and academic teachers), 2) developing tools for intervention work based on the concept of Empowerment. Within the training, the research was carried out based on the action research methodology and the use of scaling and uncategorized interview. The article presents the excerpt of the research, which was aimed at determining the changes in the competencies related to the use of the DPA approach in the project’s participants, as well as their subjective understanding of the DPA. The presented research results show the legitimacy of the project implementation by partner institutions, which are universities and non-governmental organizations. The competences and skills acquired by the project participants can be used in academic and environmental work.
Źródło:
Edukacja Międzykulturowa; 2023, 23, 4; 207-218
2299-4106
Pojawia się w:
Edukacja Międzykulturowa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Śródmieście – to centrum miasta? Przykłady miast Subregionu Centralnego – Zabrza, Bytomia i Gliwic
Is Downtown the City Center? Examples of Central Subregion Cities – Zabrze, Bytom and Gliwice
Autorzy:
Sekuła, Anna
Powiązania:
https://bibliotekanauki.pl/articles/2021436.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Downtown
local development policy
local problems
Źródło:
Studia komitetu przestrzennego zagospodarowania kraju PAN; 2018, 184; 284-296
0079-3507
Pojawia się w:
Studia komitetu przestrzennego zagospodarowania kraju PAN
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Problemy opiekuńcze związane z chorobą Huntingtona
Care problems related to Huntington Disease
Autorzy:
Graf, Lucyna
Śleziona, Mariola
Powiązania:
https://bibliotekanauki.pl/articles/1029799.pdf
Data publikacji:
2016
Wydawca:
Państwowa Uczelnia Zawodowa we Włocławku
Tematy:
care problems related to huntington disease
Opis:
Huntington disease is a chronic neurodegenerative disease and autosomal dominant innate. The symptoms of this disease take the form of motor, cognitive, behavioral and emotional disorders. This diseases is particularly challenging to parents and caregivers, as well as doctors, psychologists, physiotherapists and social care employees. The purpose of this study is to present possible solutions to the problems related to Huntington disease, issues related to the care for the patient, assistance and support for patients and their relatives. It is necessary to educate people about Huntington disease and provide advice to caregivers and medical personnel with regard to dealing with its consequences. There is also a need to modify the existing system, improve the access to medical and social care, as well as create therapeutic teams and cooperate with them.
Choroba Huntingtona jest przewlekłą neurodegeneracyjną chorobą, którą się dziedziczy autosomalnie dominująco. Objawy choroby dotyczą zaburzeń motorycznych, poznawczych, zachowania i emocji. Omawiana jednostka chorobowa stanowi szczególne wyzwanie dla rodzin i opiekunów, a także lekarzy, psychologów, rehabilitantów i pracowników opieki socjalnej. Niniejsza praca ma na celu przedstawienie możliwości rozwiązywania problemów związanych z chorobą Huntingtona, problemów związanych z opieką nad chorym, działań pomocowych oraz wsparcia dla chorego i jego bliskich. Konieczna jest edukacja na temat choroby Huntingtona oraz poradnictwo dla opiekunów i personelu medycznego w zakresie radzenia sobie z problemami związanymi z chorobą. Konieczne są również zmiany systemowe i polepszenie dostępu do opieki medycznej i socjalnej oraz tworzenie i współpraca zespołów terapeutycznych.
Źródło:
Innowacje w Pielęgniarstwie i Naukach o Zdrowiu; 2016, 1, 2; 96-108
2451-1846
Pojawia się w:
Innowacje w Pielęgniarstwie i Naukach o Zdrowiu
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A few words about history of extremal problems at Moscow University
Autorzy:
Tikhomirov, V. M.
Demidovich, V. B.
Powiązania:
https://bibliotekanauki.pl/articles/970919.pdf
Data publikacji:
2009
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
Moscow University
history of extremal problems
Źródło:
Control and Cybernetics; 2009, 38, 4A; 997-999
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł

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