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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
Tytuł:
Węzłowe problemy bezpieczeństwa narodowego Polski dwóch dekad XXI wieku
MAIN NATIONAL SECURITY PROBLEMS IN POLAND IN TWO DECADES OF THE XXI CENTURY
Autorzy:
Wyszczelski, Lech
Powiązania:
https://bibliotekanauki.pl/articles/418667.pdf
Data publikacji:
2012
Wydawca:
Akademia Marynarki Wojennej. Wydział Nauk Humanistycznych i Społecznych
Tematy:
NATIONAL SECURITY
SECURITY PROBLEMS
SECURITY POLICY
Opis:
The new national security vision of Poland came after political transformation in Poland in 1989, the liquidation of the Warsaw Pact and aspirations to join the Western security and political system. After joining the NATO (1999), admission to the European Union (2004), has been fully integrated with the structures of these institutions. This placed the new challenges by identifying key priorities in its national security. New quality in the global and national security occurred on 11 September 2001, since when it has directly threatened the security of the United States. Under the influence of the country were changed the strategy of global security, followed by the national security of many countries, including the Polish market. In it, there was also the threat of international terrorism and declaration – also actively involved – to participate in its combat missions. A particularly important tool for the implementation of national security strategy, in addition to international guarantees and block and properly conducted foreign policy, is to have adequate national military capabilities including appropriate to the threats of the armed forces. The management of Polish political and military formally recognizes that premise – this has been reflected in the developed "Vision – 2030 Armed Forces."
Źródło:
Colloquium; 2012, 4, 4; 115-132
2081-3813
2658-0365
Pojawia się w:
Colloquium
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Computer programming as a tool for the engineering problems analysis
Autorzy:
Sobaszek, Ł
Powiązania:
https://bibliotekanauki.pl/articles/117999.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Promocji Wiedzy
Tematy:
computer programming
engineering problems
MATLAB language
Opis:
The paper presents the use of computer programming to solving typical engineering problems. First of all, the basic information about the computer programming ideology and types of computer programming languages were outlined. Secondly, the Matlab environment that combines computing, visualization and programming was described. In the final part of the paper the author presented solution of the beam with a uniformly distributed load problem by use of special computer program prepared in Matlab language.
Źródło:
Applied Computer Science; 2013, 9, 2; 57-71
1895-3735
Pojawia się w:
Applied Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Methodological considerations in studying awareness during learning: Part 1: Implicit learning
Autorzy:
Nakamura, Daisuke
Powiązania:
https://bibliotekanauki.pl/articles/430468.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
awareness
implicit learning
review
methodological problems
Opis:
Methodological problems of how awareness during learning should be measured have been extensively discussed and investigated in cognitive psychology. This review considers; 1)whether amnesics can perform implicit learning tasks at a similar level to normal controls, 2) whether differences in instructional orientations create dissociations in performance in tests of implicit and explicit knowledge, and 3) whether participants can retrospectively verbalise the learning outcomes. The paper concludes that; (1) amnesics’ implicit learning abilities differ from the normal controls, (2) instructions on implicit learning do not guarantee the occurrence of implicit learning, and (3) objective and subjective awareness measures used in the literature face inherent problems and so the awareness controversy remains unsettled.
Źródło:
Polish Psychological Bulletin; 2013, 44, 1; 102-117
0079-2993
Pojawia się w:
Polish Psychological Bulletin
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cartography in the face of contemporary social problems
Autorzy:
Krzywicka-Blum, E.
Powiązania:
https://bibliotekanauki.pl/articles/225855.pdf
Data publikacji:
2006
Wydawca:
Politechnika Warszawska. Wydział Geodezji i Kartografii
Tematy:
kartografia
wsółczesne problemy
cartography
contemporary problems
Źródło:
Reports on Geodesy; 2006, z. 2/77; 291-297
0867-3179
Pojawia się w:
Reports on Geodesy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A note on confidence intervals for deblurred images
Autorzy:
Biel, Michał
Szkutnik, Zbigniew
Powiązania:
https://bibliotekanauki.pl/articles/255867.pdf
Data publikacji:
2020
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
inverse problems
confidence intervals
convolution
deblurring
Opis:
We consider pointwise asymptotic confidence intervals for images that are blurred and observed in additive white noise. This amounts to solving a stochastic inverse problem with a convolution operator. Under suitably modified assumptions, we fill some apparent gaps in the proofs published in [N. Bissantz, M. Birke, Asymptotic normality and confidence intervals for inverse regression models with convolution-type operators, J. Multivariate Anal. 100 (2009), 2364-2375]. In particular, this leads to modified bootstrap confidence intervals with much better finite-sample behaviour than the original ones, the validity of which is, in our opinion, questionable. Some simulation results that support our claims and illustrate the behaviour of the confidence intervals are also presented.
Źródło:
Opuscula Mathematica; 2020, 40, 3; 361-373
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Most common health problems of elderly in the opinion of health sciences students in Poland, Belarus and Greece
Autorzy:
Cybulski, M.
Krajewska-Kułak, E.
Sowa, P.
Shpakau, A.
Theodosopoulou, E.
Chadzopulu, A.
Powiązania:
https://bibliotekanauki.pl/articles/1918389.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Medyczny w Białymstoku
Tematy:
aging
elderly
health problems
perception
students
Opis:
Introduction: Health is one of the most important and cherished values in the elderly. It has been estimated that among people over 65 years old 80% of people suffer from at least one physical illness. Purpose: To identify the opinions of the respondents on the most common health problems of elderly over 60. Materials and methods: The study was conducted between January 2013 and November 2014 in three study groups: Polish, Belarusian and Greek students. A total of 600 (200 for each group) respondents were tested with the questionnaire created by authors. Results: Respondents indicated that the most characteristic physical features of elderly people are wrinkles (68.7%, n = 412), gray hair (54.3%, n = 326) while cardiovascular diseases are the most common health problem (76.3%, n = 458). The most significant factor in delaying the aging process was active lifestyle (85.3%, n = 512). Conclusions: There is a need for increased education in geriatrics and care of the elderly among students of health sciences, who in the future will be entered in the geriatric therapeutic teams. The perception of health problems of the elderly were different depending on the country of origin of the respondents. This may indicate that the students don’t know the basic diseases and ailments in this age group (for example geriatric giants).
Źródło:
Progress in Health Sciences; 2016, 6(2); 39-45
2083-1617
Pojawia się w:
Progress in Health Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Kamera i poeta doctus? O filmach Edwarda Żebrowskiego z perspektywy lotu ptaka
Camera and poeta doctus? About Edward Żebrowski’s Films
Autorzy:
Szpulak, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/919837.pdf
Data publikacji:
2011-01-13
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
author film
ethical problems
Polish cinema
Opis:
This text conserns the excelent polish director Edwrad Żebrowski’ creation. It has character of synthetic discussion. It shows main formal questions of it this creation and main problems of it. It is considered also the question of anachronism of these movies.
Źródło:
Images. The International Journal of European Film, Performing Arts and Audiovisual Communication; 2011, 9, 17-18; 220-231
1731-450X
Pojawia się w:
Images. The International Journal of European Film, Performing Arts and Audiovisual Communication
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Appendix to the paper "Osgood type conditions for an mth order differential equation"
Autorzy:
Szufla, Stanisław
Powiązania:
https://bibliotekanauki.pl/articles/729294.pdf
Data publikacji:
2001
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
initial value problems
measures of noncompactness
Źródło:
Discussiones Mathematicae, Differential Inclusions, Control and Optimization; 2001, 21, 1; 149-153
1509-9407
Pojawia się w:
Discussiones Mathematicae, Differential Inclusions, Control and Optimization
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Niektóre problemy z tlumaczeniem Frame Analysis Goffmana - perspektywa tlumacza
SOME PROBLEMS WITH THE POLISH TRANSLATION OF ERVING GOFFMAN'S FRAME ANALYSIS - TRANSLATOR'S PERSPECTIVE
Autorzy:
Burdziej, Stanislaw
Powiązania:
https://bibliotekanauki.pl/articles/1373842.pdf
Data publikacji:
2011
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
ERVING GOFFMAN
FRAME ANALYSIS
TRANSLATION PROBLEMS
Opis:
Abstract: Frame Analysis (1974) is probably the most important work written by Erving Goffman, however it was only recently translated into Polish. The author of this article (a sociologist and the translator of Goffman's book) presents an overview of major problems involved in the process of this translation, especially those pertaining to main concepts introduced by Goffman. Among these are frame and framing, containment, keying, and flooding out. This paper also offers an attempt to adapt Goffman's conceptual framework to a systematic analysis of the very process of translation (which could be treated, as it is argued) as a keying of the original text.
Źródło:
Przegląd Socjologii Jakościowej; 2011, 7, 2; 46-53
1733-8069
Pojawia się w:
Przegląd Socjologii Jakościowej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Międzynarodowe znaczenie żywności genetycznie modyfikowanej i jej rola w rozwiązywaniu ekonomiczno-społecznych problemów świata
International significance of genetically modified food and its role in solving socio-economic problems of the world
Autorzy:
Michalczyk, Joanna
Powiązania:
https://bibliotekanauki.pl/articles/570038.pdf
Data publikacji:
2016
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
genetically modified food
GMO
global problems
Opis:
Genetically modified food is one of the most problematic areas of cooperation among countries. The numerous controversies associated with its cultivation and introduction on different markets prompted the author to reflect on this issue. The aim of the publication is to identify the essence of genetically modified food and to indicate the extent of its use in today’s world economy. Therefore, legal regulations on genetically modified organisms in individual countries were analysed, with particular emphasis on Poland. In addition, the reasons of the use of genetically modified organisms (GMOs) in food production were indicated, as well as the risks associated with it. The descriptive method and the analysis of the literature were used during the preparation of the study. As one can notice, the widespread reluctance of many societies, including Polish one, towards consuming genetically modified food is fuelled by world anti-globalisation movements, which background is primarily constituted by the criticism of decisions taken by transnational corporations (TNC). It can be assumed that potential benefits for human activity which can be brought by modern, GMOs-using technology and growing problems of global nature – in recent years especially the problem of maintaining food security – are factors determining the necessity of deepening knowledge on the utilisation of GMOs in various spheres of life, in food production particularly. The strategic significance of GMOs seems to be indicated by the growing interest in agricultural biotechnology of China and of the European Union itself (although the share of the latter in the whole world crops is marginal). They gradually move in the direction of creating bioeconomy based on spreading innovations, also in the agri-food sector.
Źródło:
Ekonomia XXI Wieku; 2016, 1 (9); 100-115
2353-8929
Pojawia się w:
Ekonomia XXI Wieku
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Znaczenie i problemy definicyjne pojęcia „singiel” w naukach społecznych / The Conceptual and Definition Problems of the ‘Single’ Notion in the Social Science
Autorzy:
Ochnik, Dominika
Powiązania:
https://bibliotekanauki.pl/articles/419511.pdf
Data publikacji:
2012-12-01
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
singiel
problemy definicyjne
single
definition problems
Opis:
Artykuł porusza zagadnienie naukowego podejścia do terminu singiel. W celu pełnej charakterystyki pojęcia singiel, zaprezentowano kryteria definicyjne stosowane w polskiej i światowej literaturze. Kontrowersje związane z naukowymi podstawami stosowania tego pojęcia w naukach społecznych, wynikają z heterogeniczności grupy osób żyjących w pojedynkę. Kluczowymi obszarami poddanymi krytyce są typ i charakter relacji oraz forma zamieszkania
Źródło:
Studia Psychologiczne (Psychological Studies); 2012, 50, 1; 63-74
0081-685X
Pojawia się w:
Studia Psychologiczne (Psychological Studies)
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Selected Medical and Social Problems of The Elderly
Autorzy:
Saracen, Agnieszka
Fidecki, Wiesław
Powiązania:
https://bibliotekanauki.pl/articles/1034038.pdf
Data publikacji:
2013
Wydawca:
Zakład Opieki Zdrowotnej Ośrodek Umea Shinoda-Kuracejo
Tematy:
elderly people
medial and social problems
Opis:
Time definition of this process is very difficult, because the life situation of an individual human being significantly changes its course. In the evaluation of the aging process of the elderly in addition to calendar age, which to a small extent determines the spiritual and physical human efficiency, the biological age and mental state together with the social situation should also be taken into account. The age of sixty five has conventionally been adopted as the lower limit of old age. In the group of people crossing that limit there is a substantial difference in the condition and needs, which to a lesser extent depend on chronological age and to greater extent on other factors. Older people during this period of their lives experience numerous medical and social problems (major geriatric problems, loneliness, ageism).
Źródło:
Medicina Internacia Revuo; 2013, 25, 100; 99- 105
0465-5435
Pojawia się w:
Medicina Internacia Revuo
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Socio-educational aspects in the probation officers work
Autorzy:
Dagmara, Kostrzewska,
Powiązania:
https://bibliotekanauki.pl/articles/890393.pdf
Data publikacji:
2019-07-12
Wydawca:
Akademia Pedagogiki Specjalnej im. Marii Grzegorzewskiej. Wydawnictwo APS
Tematy:
social problems
probation officer
supervisions
autoethnography
Opis:
The article presents specific aspects of probation officer's work against the background of social problems he encounters. The research on which the article is based was conducted during three-year service in one of probation officer's office in Warsaw. For the sake of the research, the autoethnographic method, characteristic for qualitative and field tests, was used. The author of the text raises the topics of social problems by the example of families under her supervision, where the wards struggle with violence, negligence, difficulties around the divorce, in the background of which conflicts, stimulants or addictions are clearly visible. The aim of the publication is to present the specifics of the work of a probation officer, which is often mistakenly associated with the stigmatization of dysfunctional environments, as well as showing still valid and often marginalized social problems, which despite the increasing living standard of society and the quality of life of Varsovians, are a daily routine for probationers.
Źródło:
International Journal of Pedagogy, Innovation and New Technologies; 2019, 6(1); 115-121
2392-0092
Pojawia się w:
International Journal of Pedagogy, Innovation and New Technologies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On the computational complexity of (O,P)-partition problems
Autorzy:
Kratochvíl, Jan
Schiermeyer, Ingo
Powiązania:
https://bibliotekanauki.pl/articles/971956.pdf
Data publikacji:
1997
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
computational complexity
graph properties
partition problems
Opis:
We prove that for any additive hereditary property P > O, it is NP-hard to decide if a given graph G allows a vertex partition V(G) = A∪B such that G[A] ∈ (i.e., A is independent) and G[B] ∈ P.
Źródło:
Discussiones Mathematicae Graph Theory; 1997, 17, 2; 253-258
2083-5892
Pojawia się w:
Discussiones Mathematicae Graph Theory
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Twórcza aktywność matematyczna uczniów związana z rozwiązywaniem pewnych zadań na zastosowanie wzorów Viète’a
Creative mathematical mental activity of students while solving problems requiring use of Vieta’s formulas
Autorzy:
Chronowski, Antoni
Powązka, Zbigniew
Powiązania:
https://bibliotekanauki.pl/articles/1789282.pdf
Data publikacji:
2017-07-05
Wydawca:
Uniwersytet Pedagogiczny im. Komisji Edukacji Narodowej w Krakowie
Tematy:
Vieta’s formulas
solving mathematical problems
Opis:
In this article we propose ways of developing the active and creativeattitude of students towards solving mathematical problems. The taskswere sourced from various mathematical competitions for secondary schoolstudents, such as the so-called Mathematical Olympiad, and require theuse of Vieta’s formulas for third-degree polynomials. These problems inspirestudents to conduct their own elementary research work and foster theircreative attitude towards mathematics. This article is dedicated mainly tostudents who are pre-service mathematics teachers, but may also be of useto in-service teachers.
Źródło:
Annales Universitatis Paedagogicae Cracoviensis. Studia ad Didacticam Mathematicae Pertinentia; 2016, 8; 25-49
2080-9751
2450-341X
Pojawia się w:
Annales Universitatis Paedagogicae Cracoviensis. Studia ad Didacticam Mathematicae Pertinentia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Anorexia nervosa: A literature review
Autorzy:
Iliadis, Ch.
Frantzana, A.
Ouzounakis, P.
Kourkouta, L.
Powiązania:
https://bibliotekanauki.pl/articles/1918943.pdf
Data publikacji:
2020
Wydawca:
Uniwersytet Medyczny w Białymstoku
Tematy:
Anorexia nervosa
health problems and treatment.
Opis:
Introduction: Anorexia nervosa is a food intake disorder characterized by acute weight loss that it could cause severe psychosomatic problems. Purpose: To present the data and information as well as the treatment related to Anorexia nervosa. Materials and methods: The study material consisted of reviewed articles on the topic found in Greek and globally accepted electronic databases, Pubmed, Scopus, Medline, Google Scholar, regarding the effects of Anorexia nervosa on health and its treatment. Results: Initial symptoms of Anorexia nervosa and Bulimia Nervosa may be characterised by body-related negative interpretation bias, distorted body image and pronounced body dissatisfaction. Anorexic patients refuse to eat with their family or in public places. They lose weight by drastically reducing their total food intake, with a disproportionate reduction in the amount of meals containing carbohydrates and fats. The term Anorexia is unfortunate, because a decrease in appetite does not occur. Patients are constantly hungry and they are constantly thinking about food, but they refuse it. An indication of their way of thinking is that they often collect recipes or prepare complex meals for others. Conclusions: Anorexia nervosa is a disease that connects the physical with the mental dimension of health. A person's disharmonious relationship with oneself, which may have its roots in a dysfunctional family context or in a demanding and competitive social environment, finds the way to be manifested through the individual's reflection on food.
Źródło:
Progress in Health Sciences; 2020, 10(2); 74-79
2083-1617
Pojawia się w:
Progress in Health Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The CLIL Method versus Pupils’ Results in Solving Mathematical Word Probelms
Autorzy:
Binterová, H.
Petrášková, V.
Komínková, O.
Powiązania:
https://bibliotekanauki.pl/articles/2032572.pdf
Data publikacji:
2014-12-31
Wydawca:
Wydawnictwo Adam Marszałek
Tematy:
mathematical problems
elementary school
teaching method
Opis:
The study presents results of research investigations conducted in one elementary school in connection with implementation of mathematics teaching in English using the CLIL method. The aim of the presented case study was to contribute to uncovering the influence of this teaching method on the academic results of pupils in mathematics and the study outlines briefly an analysis of the pupils’ strategies used when solving word problems at elementary school level. At the same time, the paper also presents possible causes of the changes, which were identified in the pupils’ ways of solving word problems.
Źródło:
The New Educational Review; 2014, 38; 236-247
1732-6729
Pojawia się w:
The New Educational Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rola pedagoga w kształtowaniu tożsamości młodzieży w kontekście zagrożeń współczesności
The Eeducator’s Role in Forming the Identity of Today’s Youth in the Context of Problems and Risks
Autorzy:
Borowik, Joanna
Powiązania:
https://bibliotekanauki.pl/articles/952154.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet w Białymstoku. Wydawnictwo Uniwersytetu w Białymstoku
Tematy:
Educator
identity
youth
problems and risks
Opis:
The main reason for this article is analysis the problems and risks connected with functioning youth in modern world, with particular reference to the educator’s role in forming identity of the young generation. In connection with described situation large meaning has the change in the functioning people and world, connected with changing the role of family in upbringing, the loss of existing authorities and omnipresent in young people’s life media and popular culture. Essential element is educators’ actions which should help young people cope with challenges which they will have because of changes in our dynamical world. This is why very important factor is knowing their experiences in context of their challenges, risks or consequences connected with upbringing the youngest generation.
Źródło:
Pogranicze. Studia Społeczne; 2017, 31
1230-2392
Pojawia się w:
Pogranicze. Studia Społeczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Проблемы сохранения структурного потенциала сельского расселения Украины
Behavior of potential structural problems of the rural population of Ukraine
Autorzy:
Краевская, Галина A.
Powiązania:
https://bibliotekanauki.pl/articles/501475.pdf
Data publikacji:
2012
Wydawca:
Instytut Studiów Międzynarodowych i Edukacji Humanum
Tematy:
Ukraine
rural population
problems of development
Opis:
The author examines the issue of conservation potential of the rural population of Ukraine. The changes that have taken place in the economy and society over the last twenty years have adversely affected the demographic structure of the Ukrainian village. The author proposes concreto measures to reduce the asymmetry between the town and the country.
Źródło:
Społeczeństwo i Edukacja. Międzynarodowe Studia Humanistyczne; 2012, 2(10); 551-561
1898-0171
Pojawia się w:
Społeczeństwo i Edukacja. Międzynarodowe Studia Humanistyczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bringing Historical Dimensions Into the Study of Social Problems: The Social Construction of Authority
Autorzy:
Furedi, Frank
Powiązania:
https://bibliotekanauki.pl/articles/2107048.pdf
Data publikacji:
2015-04-30
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
Authority
Legitimacy
Social Problems
Claims
Tradition
Opis:
Appeals to authority have always played a key role in the construction of social problems. Authority legitimates claims, which is why claim-makers have always sought its validation. An exploration into the historical dimension of the social construction of authority provides insight into changing foundations on which claims about social problems are made. In contrast to the Middle Ages, the modern era has found it difficult to gain consensus on the meaning of authority. This historical shift in the status of authority provides the context for contemporary competitive claims-making about social problems.
Źródło:
Qualitative Sociology Review; 2015, 11, 2; 94-108
1733-8077
Pojawia się w:
Qualitative Sociology Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wybrane problemy interpretacyjne obowiązkowych ubezpieczeń rolnych
The compulsory agricultural insurances – selected issues of interpretation
Autorzy:
Malik, Adam
Powiązania:
https://bibliotekanauki.pl/articles/952967.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet w Białymstoku. Wydawnictwo Temida 2
Tematy:
compulsory insurance
agriculture
problems of interpretation
Opis:
This article analyses the specific problems of compulsory agricultural insurances in Polish legal system, including liability insurance of the holder of homestead, insurance for buildings included in the homestead – from fire and the other risks, and crop insurance – from random events. In particular, the author explains the meaning of selected problems of interpretation in the practical application of individual regulations. These considerations are focused on the problem of personal range and realization of the insurance requirements, duration of the insurance contracts, and analysis of the effectiveness of crop insurance regulation. In this regard, the author also reports specific de lege ferenda conclusions.
Źródło:
Studia Iuridica Agraria; 2015, 13; 243-256
1642-0438
Pojawia się w:
Studia Iuridica Agraria
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Decomposition method and its application to the extremal problems
Autorzy:
Górecki, H.
Zaczyk, M.
Powiązania:
https://bibliotekanauki.pl/articles/229573.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
extremal problems
decomposition
characteristic equation
transmittance
Opis:
In the article solution of the problem of extremal value of x(τ) is presented, for the n-th order linear systems. The extremum of x(τ) is considered as a function of the roots s1, s2, ... sn of the characteristic equation. The obtained results give a possibility of decomposition of the whole n-th order system into a set of 2-nd order systems.
Źródło:
Archives of Control Sciences; 2016, 26, 1; 49-67
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Extremal Digraphs Avoiding Distinct Walks of Length 4 with the Same Endpoints
Autorzy:
Lyu, Zhenhua
Powiązania:
https://bibliotekanauki.pl/articles/32304139.pdf
Data publikacji:
2022-08-01
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
digraph
Turán problems
transitive tournament
walk
Opis:
Let n ≥ 8 be an integer. We characterize the extremal digraphs of order n with the maximum number of arcs avoiding distinct walks of length 4 with the same endpoints.
Źródło:
Discussiones Mathematicae Graph Theory; 2022, 42, 3; 985-1004
2083-5892
Pojawia się w:
Discussiones Mathematicae Graph Theory
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Exponential and chaotic neurodynamical tabu searches for quadratic assignment problems
Autorzy:
Hasegawa, M.
Ikeguchi, T.
Aihara, K.
Powiązania:
https://bibliotekanauki.pl/articles/206864.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
problem optymalizacji kombinatorycznej
sieć neuronowa
chaos
combinatorial optimization problems
neural networks
quadratic assignment problems
tabu search
Opis:
We propose a chaotic neurodynamical searching method for the Quadratic Assignment Problems (QAPs). First, we construct a neural network whose behavior is the same as that of the conventional tabu search. Using the dynamics of the tabu search neural network, we realize the exponential tabu search, whose tabu effect decreases exponentially with time, and we show the effectiveness of this type of exponential tabu search. Next, we extend this novel tabu search to a chaotic version. This chaotic method includes both effects of the chaotic dynamical search and the exponential tabu search, and exhibits better performance than the conventional and exponential tabu searches. Last, we propose an automatic parameter tuning method and show that the proposed method exhibits high performance even on large QAPs.
Źródło:
Control and Cybernetics; 2000, 29, 3; 773-788
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Aktualne problemy prawno-środowiskowe dotyczące instalacji TPOK
Autorzy:
Cholewa, Klaudia
Powiązania:
https://bibliotekanauki.pl/articles/1841823.pdf
Data publikacji:
2021
Wydawca:
Nowa Energia
Tematy:
termiczne przekształcanie odpadów komunalnych
problemy prawne
problemy środowiskowe
thermal treatment of municipal waste
legal problems
environmental problems
Opis:
W związku z zachodzącymi zmianami w prawie instalacje do przetwarzania odpadów, w tym instalacje TPOK - muszą sprostać różnym wyzwaniom prawno-środowiskowym. Trwający obecnie okres dostosowawczy do Konkluzji BAT spowodował konieczność zmiany obowiązujących pozwoleń zintegrowanych. Dodatkowo, na funkcjonowanie instalacji wpływ będą mieć również uchwalone w tym roku nowelizacje przepisów. W niniejszym tekście przedstawione zostaną aktualne zagadnienia prawno-środowiskowe dotyczące instalacji TPOK.
Źródło:
Nowa Energia; 2021, 4; 4-7
1899-0886
Pojawia się w:
Nowa Energia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fractional problems with right-handed Riemann-Lioville fractional derivatives
Autorzy:
Jankowski, T.
Powiązania:
https://bibliotekanauki.pl/articles/1938600.pdf
Data publikacji:
2016
Wydawca:
Politechnika Gdańska
Tematy:
right-handed Riemann-Liouville fractional derivatives
nonlinear boundary problems
linear problems
existence of solutions
Mittag-Leffler functions
Opis:
In this paper, we investigate the existence of solutions for advanced fractional differential equations containing the right-handed Riemann-Liouville fractional derivative both with nonlinear boundary conditions and also with initial conditions given at the end point T of interval [0,T]. We use both the method of successive approximations, the Banach fixed point theorem and the monotone iterative technique, as well. Linear problems are also discussed. A few examples illustrate the results.
Źródło:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2016, 20, 1; 63-83
1428-6394
Pojawia się w:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zastosowanie treningu neurofeedback w pracy z dziećmi z niepełnosprawnością intelektualną w stopniu lekkim. Projekt procedury
Neurofeedback Training in Working with Children with a Mild Intellectual Disability: Procedure Design
Autorzy:
Rochatka, Weronika
Powiązania:
https://bibliotekanauki.pl/articles/15836921.pdf
Data publikacji:
2021-06-15
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
neurofeedback
intellectual disability
learning problems
attention enhancement
Opis:
As a method of training neurofeedback has proved to be effective in education and therapy of children (e.g., with ADHD, autism spectrum or specific learning disorders). However, there are no neurofeedback training protocols targeting individuals with a mild intellectual disability. Therefore, I designed a neurofeedback procedure for children with this disability; it focuses on attention span training. In this study I presented the pre-planned procedure to the child’s parent to determine whether the proposed method is feasible for work with a child with a mild intellectual disability. After learning the parents’ opinion, I indicate the possible further stages of developing a neurofeedback strategy for working with children with a mild intellectual disability. Finally, I demonstrate the future directions of research and planning of neurofeedback procedures for individuals with special needs.
Źródło:
Studia Edukacyjne; 2021, 61; 295-275
1233-6688
Pojawia się w:
Studia Edukacyjne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Education of Children with a Refugee Background in Poland in the Situation of War in Ukraine. Outline of the Problems
Autorzy:
Kruk, Marzena
Powiązania:
https://bibliotekanauki.pl/articles/23050992.pdf
Data publikacji:
2023-06-30
Wydawca:
Wydawnictwo Adam Marszałek
Tematy:
children
migration
refugees
educational process
Ukraine
problems
Opis:
In the context of the military conflict in Ukraine, since February 24, 2022, the Polish government has decided to include refugee children in the continuation and implementation of education in the Polish education system at various stages and levels of education. Educational institutions in Poland have faced the great challenge of accepting refugee children into the Polish education system. Due to the war situation, both children with a refugee background and their guardians (mothers), as well as teachers, were confronted with the reality that showed many aspects of education and the implementation of the didactic process in a situation hitherto unknown and unexpected. The article aims to provide a preliminary diagnosis of the education process of children with a refugee background from the perspective of teachers and institutional support. In addition, the analysis also attempted to assess the health and mental well-being of children with experience of war trauma. Critical reflection on the education process of refugee children in Poland is based on available reports and studies of quantitative and qualitative research carried out primarily by public institutions (Polish Ministry of Education and Science, UNHCR, Integrated Educational Platform) and the private sector (Centre for Citizenship Education 2022–2023).
Źródło:
Kultura i Edukacja; 2023, 2(140); 7-22
1230-266X
Pojawia się w:
Kultura i Edukacja
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of use of selected it tools in work safety management
Autorzy:
Tabor, J.
Powiązania:
https://bibliotekanauki.pl/articles/95127.pdf
Data publikacji:
2016
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
IT tool
occupational Safety management
safety problems
Opis:
Dynamic development of IT tool applications is observed in all areas of management. This paper chiefly identifies work safety management areas in which information technology tools are currently used. At the same time, it reviews IT tools that are most frequently used for areas identified in the context of solving specific safety problems. Based upon analysis of test results, it evaluates the use of selected IT tools in the group of small and medium manufacturing companies.
Źródło:
Information Systems in Management; 2016, 5, 2; 284-293
2084-5537
2544-1728
Pojawia się w:
Information Systems in Management
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A manufacturing network for generating added value from a geographical distance for the next generation
Autorzy:
Yukawa, K.
Kawakami, T.
Powiązania:
https://bibliotekanauki.pl/articles/99988.pdf
Data publikacji:
2011
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
virtual concentration
optimization problems
value-added network
Opis:
n this study, we suggested a manufacturing network for generating added value from a geographical distance in terms of value creation from various management resources. Until today, most researchers focused on the Real Concentration of Production Base, which provides certain manufacturing benefits in these domains. However, "the Virtual Concentration of Production Bases" is realized by overcoming large physical distances and time differences between production bases, and creates greater added value for products. We attempted the simulation of the manufacturing network of creating the added value after having shown the new framework of network analysis in the manufacturing system.
Źródło:
Journal of Machine Engineering; 2011, 11, 3; 44-57
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Universalistic Conception of The Civilization in The Social and Philosophical Thought of Pope John Paul II
Autorzy:
Modrzejewski, Arkadiusz
Powiązania:
https://bibliotekanauki.pl/articles/2026742.pdf
Data publikacji:
2006-12-31
Wydawca:
Wydawnictwo Adam Marszałek
Tematy:
Pope John Paul II
philosophy
social problems
Opis:
Karol Wojtyla (1920–2005), later to become Pope John Paul II (since 1978), was one of the greatest contemporary thinkers. He was a Christian philosopher and Catholic theologian. His thought exerted an in! uence on diverse generations and representatives of many cultures, religions and nations. He was an authority not only for Catholics but also for many infidels and even atheists. He often made controversies because of His firm opinions. He was an aim of liberal as well as conservative critique. The liberals criticized Him due to His uncompromising and conservative attitude to female priesthood, homosexuality, contraception and abortion. The conservatives accused Him of apologizing and conciliatory tone of His voice in relationships with other religions, especially with Jews and Muslims. Because these parts of His thought became most controversial, they were and usually are commented on and analysed by world mass media. But few people found Him a leading contemporary theoretician of civilization despite the fact that He constructed a coherent theory of civilization that is unfortunately distracted in His numerous papers. And my article is dedicated to this theory. I would like to present the core of His civilization’s conception.
Źródło:
Polish Political Science Yearbook; 2006, 35; 33-42
0208-7375
Pojawia się w:
Polish Political Science Yearbook
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A study on routing problems and different routing protocols in wireless sensor networks
Autorzy:
Venkatesakumar, V.
Ragasudha, R.
Powiązania:
https://bibliotekanauki.pl/articles/1182939.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
wireless sensor networks
routing protocols
routing problems
Opis:
Extensive utilization of WSN is the reason of advancement of numerous routing protocols. The Late advances in WSN now witness the expanded enthusiasm for the potential use in applications like Environmental, Military, Space Exploration, Health (Scanning), Vehicular Movement, disaster management, Mechanical anxiety levels of appended objects, battle field observation and so forth. Sensors are required to be remotely conveyed in unattended situations. Propels in WSN innovation has given the accessibility of little and minimal effort sensor hubs with a capacity of sensing different sorts of physical and natural environment conditions, wireless communication and data processing. Assortment of sensing capacities results in bounty of application areas. However, the attributes of WSN require more powerful strategies for data forwarding. The sensor hubs in WSN have a constrained transmission range, and their handling and capacity abilities and as well as their energy assets are also restricted. Routing protocols for WSN are in charge of keeping up the routes in the network system and need to guarantee dependable multi-hop communication under these conditions. Routing as one key innovations of wireless sensor systems has now turned into a hot examination on the grounds that the uses of WSN are all over the place, it is unthinkable that there is a routing protocol suitable for all applications. In this paper, we give an overview of routing issues routing protocols for Wireless Sensor Network.
Źródło:
World Scientific News; 2016, 49, 2; 236-248
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Advanced Inversion Techniques for Ground Penetrating Radar
Autorzy:
Fedeli, A.
Pastorino, M.
Randazzo, A.
Powiązania:
https://bibliotekanauki.pl/articles/308896.pdf
Data publikacji:
2017
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
electromagnetic scattering
Ground Penetrating Radar
inverse problems
Opis:
Ground Penetrating Radar (GPR) systems arenowadays standard inspection tools in several application areas, such as subsurface prospecting, civil engineering and cultural heritage monitoring. Usually, the raw output of GPR isprovided as a B-scan, which has to be further processed inorder to extract the needed information about the inspectedscene. In this framework, inversescattering-based approachesare gaining an ever-increasing interest, thanks to their capabilities of directly providing images of the physical and dielectricproperties of the investigated areas. In this paper, some advances in the development of such inversion techniques in theGPR field are revised and discussed.
Źródło:
Journal of Telecommunications and Information Technology; 2017, 3; 37-42
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Trefftz functions for non-stationary problems
Funkcje Trefftza dla problemów niestacjonarnych
Autorzy:
Grysa, K.
Maciejewska, B.
Powiązania:
https://bibliotekanauki.pl/articles/279441.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
non-stationary inverse problems
Trefftz method
FEMT
Opis:
Different types of Trefftz functions for non-stationary linear and weakly nonlinear differentia equations are presented. The Trefftz methods are defined and briefly described. Certain results for non-stationary problems of heat conduction (among others boundary temperature identification and thermal diffusivity estimation), for beam vibration, for thermoelasticity and for the wave equation (direct and inverse problem of membrane vibrations) are shown. In many cases, the FEM with Trefftz functions (FEMT) as probe functions is applied. Three kinds of FEMT are tested for direct and inverse non-stationary problems. Examples of the making use of T-functions for solving inverse problems and smoothing inaccurate input data are discussed.
W pracy przedstawione są rożne rodzaje funkcji Trefftza dla niestacjonarnych liniowych i słabo nieliniowych równań różniczkowych. Zdefiniowane są i krotko opisane metody Trefftza. Prezentowane są niektóre wyniki dla niestacjonarnych problemów przewodzenia ciepła (m.in. identyfikacja temperatury na brzegu oraz estymacja dyfuzyjności termicznej), drgań belki oraz dla termosprężystości i równania falowego (prosty i odwrotny problem drgań membrany). W pracy pokazany jest również przykład zastosowania metody elementów skończonych z funkcjami Trefftza (MEST) jako funkcjami próbnymi. Trzy rodzaje MEST są testowane na prostych i odwrotnych problemach niestacjonarnych. W pracy omawiane są również przykłady zastosowania T-funkcji w rozwiązywaniu problemów odwrotnych w połączeniu z wygładzaniem niedokładnych danych wejściowych.
Źródło:
Journal of Theoretical and Applied Mechanics; 2013, 51, 2; 251-264
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Utility Function to Solve Approximate Linear Equations for Decision Making
Autorzy:
Yoneda, K.
Celaschi, W.
Powiązania:
https://bibliotekanauki.pl/articles/375878.pdf
Data publikacji:
2013
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
individual behavior
inverse problems
simultaneous equations
optimization
Opis:
Suppose there are a number of decision variables linearly related to a set of outcome variables. There are at least as many outcome variables as the number of decision variables since all decisions are outcomes by themselves. The quality of outcome is evaluated by a utility function. Given desired values for all outcome variables, decision making reduces to “solving” the system of linear equations with respect to the decision variables; the solution being defined as decision variable values such that maximize the utility function. This paper proposes a family of additively separable utility functions which can be defined by setting four intuitive parameters for each outcome variable: the desired value of the outcome, the lower and the upper limits of its admissible interval, and its importance weight. The utility function takes a nonnegative value within the admissible domain and negative outside; permits gradient methods for maximization; is designed to have a small dynamic range for numerical computation. Small examples are presented to illustrate the proposed method.
Źródło:
Decision Making in Manufacturing and Services; 2013, 7, 1-2; 5-18
1896-8325
2300-7087
Pojawia się w:
Decision Making in Manufacturing and Services
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A loss function for box-constrained inverses problems
Autorzy:
Yoneda, K.
Powiązania:
https://bibliotekanauki.pl/articles/375902.pdf
Data publikacji:
2008
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
individual behavior
inverse problems
simultaneous equations
optimization
Opis:
A loss function is proposed for solving box-constrained inverse problems. Given causality mechanisms between inputs and outputs as smooth functions, an inverse problem demands to adjust the input levels to make the output levels as close as possible to the target values; box-constrained refers to the requirement that all outcome levels remain within their respective permissible intervals. A feasible solution is assumed known, which is often the status quo. We propose a loss function which avoids activation of the constraints. A practical advantage of this approach over the usual weighted least squares is that permissible outcome intervals are required in place of target importance weights, facilitating data acquisition. The proposed loss function is smooth and strictly convex with closed-form gradient and Hessian, permitting Newton family algorithms. The author has not been able to locate in the literature the Gibbs distribution corresponding to the loss function. The loss function is closely related to the generalized matching law in psychology.
Źródło:
Decision Making in Manufacturing and Services; 2008, 2, 1-2; 79-98
1896-8325
2300-7087
Pojawia się w:
Decision Making in Manufacturing and Services
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Maximization of an Asymmetric Utility Function by the Least Squares
Autorzy:
Yoneda, K.
Moretti, A. C.
Powiązania:
https://bibliotekanauki.pl/articles/375999.pdf
Data publikacji:
2014
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
individual behavior
inverse problems
simultaneous equations
optimization
Opis:
This note points out that a utility maximization procedure proposed in an earlier paper may be reduced to the least squares. The utility function is asymmetric in the sense that for each cue its ideal value and the permissible range are assigned in such a way that the ideal is not necessarily at the center of the range, like "a beer of 350 ml would be ideal, but acceptable if within [100, 500]". A practical consequence of the observation is that very little programming will be needed to deploy the utility maximization since software for the least squares is widely available.
Źródło:
Decision Making in Manufacturing and Services; 2014, 8, 1-2; 5-12
1896-8325
2300-7087
Pojawia się w:
Decision Making in Manufacturing and Services
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On the Chaplyghin method for first order partial differential equations
Autorzy:
Puźniakowska, E.
Powiązania:
https://bibliotekanauki.pl/articles/255777.pdf
Data publikacji:
2008
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
characteristics
Newton method
Chaplyghin sequences
initial problems
Opis:
Classical solutions of initial problems for nonlinear first order partial differential equations are considered. It is shown that under natural assumptions on given functions, there exist Chaplyghin sequences and they are convergent. Error estimates for approximate solutions are given. The method of characteristics is used for the construction of approximate solutions.
Źródło:
Opuscula Mathematica; 2008, 28, 2; 163-178
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nonlinear boundary value problems for differential inclusions y'' ∈ F(t,y,y')
Autorzy:
Erbe, L.
Krawcewicz, W.
Powiązania:
https://bibliotekanauki.pl/articles/1313250.pdf
Data publikacji:
1991
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
boundary value problems
differential inclusion
topological transversality
Opis:
Applying the topological transversality method of Granas and the a priori bounds technique we prove some existence results for systems of differential inclusions of the form y'' ∈ F(t,y,y'), where F is a Carathéodory multifunction and y satisfies some nonlinear boundary conditions.
Źródło:
Annales Polonici Mathematici; 1991, 54, 3; 195-226
0066-2216
Pojawia się w:
Annales Polonici Mathematici
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
(Nie)korzystne zjawiska w relacji państwo–rodzina–dziecko
(Dis)advantageous phenomena in the government-family-child relationship
Autorzy:
Wirkus, Łukasz
Powiązania:
https://bibliotekanauki.pl/articles/1387400.pdf
Data publikacji:
2019-12-17
Wydawca:
Uniwersytet Gdański. Wydawnictwo Uniwersytetu Gdańskiego
Tematy:
family
government influence
social problems
social policy
Opis:
For several years in the social space, we have been observing the interpenetration of various phenomena in the government–family–child relationship. There has been a significant decline in the impact of traditional socialization centers on alternative entities. The circumstances described in the text make it possible to understand different contexts of contemporary transformations in the perception of parenthood, the family and its relations with the government. In the text I analyze a map of the problems of the modern family, which is still particularly important for the child’s social development and shaping his/her attitudes and behaviour.
Źródło:
Problemy Wczesnej Edukacji; 2019, 47, 4; 94-104
1734-1582
2451-2230
Pojawia się w:
Problemy Wczesnej Edukacji
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Examination of nursing students’ attitudes towards environmental problems
Autorzy:
Beser, A.
Bahar, Z.
Arkan, G.
Cal, A.
Yesiltepe, A.
Powiązania:
https://bibliotekanauki.pl/articles/1918474.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Medyczny w Białymstoku
Tematy:
Nursing students
aattitudes towards environmental
environmental problems
Opis:
Purpose: The study was directed towards examination of nursing students’ attitudes towards environmental problems. Materials and methods: This descriptive study was performed from June to August 2014 with 296 first-fourth year nursing students from one nursing faculty located in Izmir. The data of the study were collected through conducting face-to-face interviews by using Socio-Demographic Characteristics Form and Environmental Problems Attitude Scale. Descriptive statistics, chi-square test, Cronbach alpha, t-test and Mann Whitney U test were used in the data analysis. Results: Mean age of the students was 21.16±2.28 years. The fourth year students had higher scores for their attitudes to environmental problems. Female students, students taking a course about the environment before university, students becoming a member of environmental organizations had significantly higher scores for their attitudes to environmental issues. Conclusions: This study suggests that attitudes of students towards environmental problems can improve only after they are offered an effective education. Therefore, Syllabi should be designed to include environmental problems to increase knowledge and awareness of students and to acquire a positive attitude.
Źródło:
Progress in Health Sciences; 2017, 7(1); 137-144
2083-1617
Pojawia się w:
Progress in Health Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Migrácia ako možná príčina konfliktov
Autorzy:
Peter, ROZEMBERG,
Powiązania:
https://bibliotekanauki.pl/articles/890996.pdf
Data publikacji:
2018-08-09
Wydawca:
Wyższa Szkoła Bezpieczeństwa Publicznego i Indywidualnego Apeiron w Krakowie
Tematy:
migration
problems
crisis
imigrants
mass immigration
refugees
Opis:
This article deals with the current problems connected with the migration. The first part of this article provides a brief overview of opinions of former Czech president Vaclav Klaus and his former chancellor Jiři Weigl on this topic. The second part of this article provides a brief opinions which 20 years ago published on this topic famous American professor Samuel Huntington. At the end is possible to say, that current migration from the Middle East Region to the Europe, if not to be properly solved, can cause a lots of socio-economic problems in the future.
Źródło:
Kultura Bezpieczeństwa. Nauka – Praktyka – Refleksje; 2018, 29; 157-180
2299-4033
Pojawia się w:
Kultura Bezpieczeństwa. Nauka – Praktyka – Refleksje
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical method of bicharacteristics for quasilinear hyperbolic functional differential systems
Autorzy:
Kropielnicka, Karolina
Powiązania:
https://bibliotekanauki.pl/articles/745296.pdf
Data publikacji:
2005
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
initial boundary value problems
bicharacteristics
interpolating operators
Opis:
Classical solutions of mixed problems for first order partial functional differential systems in two independent variables are approximated in the paper with solutions of a difference problem of the Euler type. The mesh for the approximate solutions is obtained by a numerical solving of equations of bicharacteristics. The convergence of explicit difference schemes is proved by means of consistency and stability arguments. It is assumed that given functions satisfy nonlinear estimates of the Perron type. Differential systems with deviated variables and differential integral systems can be obtained from a general model by specializing given operators.
Źródło:
Commentationes Mathematicae; 2005, 45, 1
0373-8299
Pojawia się w:
Commentationes Mathematicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Initial-boundary value problems for impulsive parabolic functional differential equations
Autorzy:
Bainov, D.
Kamont, Zdzisław
Minchev, E.
Powiązania:
https://bibliotekanauki.pl/articles/1339288.pdf
Data publikacji:
1996
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
initial-boundary value problems
impulsive parabolic equations
Opis:
Theorems on differential inequalities generated by an initial-boundary value problem for impulsive parabolic functional differential equations are considered. Comparison results implying uniqueness criteria are proved.
Źródło:
Applicationes Mathematicae; 1996-1997, 24, 1; 1-15
1233-7234
Pojawia się w:
Applicationes Mathematicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The number of stable matchings in models of the Gale-Shapley type with preferences given by partial orders
Autorzy:
Drgas-Burchardt, E.
Powiązania:
https://bibliotekanauki.pl/articles/406336.pdf
Data publikacji:
2015
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
combinatorial problems
stable matching
Gale–Shapley model
Opis:
From the famous Gale–Shapley theorem we know that each classical marriage problem admits at least one stable matching. This fact has inspired researchers to search for the maximum number of possible stable matchings, which is equivalent to finding the minimum number of unstable matchings among all such problems of size n. In this paper, we deal with this issue for the Gale–Shapley model with preferences represented by arbitrary partial orders. Also, we discuss this model in the context of the classical Gale–Shapley model.
Źródło:
Operations Research and Decisions; 2015, 25, 1; 5-15
2081-8858
2391-6060
Pojawia się w:
Operations Research and Decisions
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Edukacja wobec etycznego wymiaru idei rozwoju trwałego i zrównoważonego
Education Towards Ethical Dimention of the Idea of Sustainable Development
Autorzy:
Ciążela, Helena
Powiązania:
https://bibliotekanauki.pl/articles/468930.pdf
Data publikacji:
2005
Wydawca:
Polska Akademia Nauk. Instytut Filozofii i Socjologii PAN
Tematy:
ethics
education
global problems
sustainable development
globalization
Opis:
The subject of the article is the problem of presence of the idea of sustainable development in contemporary education. The idea of sustainable development seems to be the most important formula, which covers the ethics of global responsibility for the world. The subject of the reflection are conflicts between the teleology of ethical imperative of human responsibility for the world and the teleology of individual utilitarism of contemporary education.
Źródło:
Prakseologia; 2005, 145; 171-182
0079-4872
Pojawia się w:
Prakseologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stanowisko Niemiec wobec współpracy z Rosją: nowe tendencje i wybrane problemy w drugiej dekadzie XXI wieku
Germany’s Position Towards Cooperation with Russia: New Tendencies and Selected Problems in the Second Decade of the 21st Century
Autorzy:
Cziomer, Erhard
Powiązania:
https://bibliotekanauki.pl/articles/489351.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Naukowe w Żytomierzu
Tematy:
Germany
Russia
cooperation
new tendencies
challenges
problems
Opis:
The paper synthetically presents new trends and selected issues concerning Germany’s stance vis-à-vis Russia in the second decade of the 21st century. It concentrates on an analysis of the following substantive issues: – draft of the essence of domestic political shifts in Germany and Russia in international context; – presentation of general assumptions featuring the new strategy in German policy vis-à-vis Russia; – showing principal challenges as well as selected problems of German cooperation with Russia in the period 2014-17; – underscoring new tendencies in Russia’s impingement on Germany together with German judgments as to Russia’s international role in the era of the Ukrainian crisis in light of opinion polls. Over the years 2003-17, as a result of internal changes in Germany, a multi-party system took on a shape that made it harder to create a coalition and a new government after the parliamentary election of September 24, 2017. In Russia, in turn, the authoritarian government system with president Vladimir Putin at the helm strengthened. President Putin, through the annexation of Crimea and support for separatists in Donbas, begot to the persistent destabilization of Ukraine. The above mentioned developments were accompanied by a transition from the post-Cold War, unipolar international system, with the United States on top, towards a multipolar international system with the rising significance of China and Russia. Russia transformed into a geopolitical “competitor” of its strategic partner, Germany. On the other hand, Germany – as a leading EU and NATO state – together with France attempted to solve the Russian-Ukrainian conflict. It managed merely to achieve a partial armistice in Donbas within the framework of the OSCE mission (the Second Minsk Agreement from February 12, 2015). Due to the strong political and economic ties, Germany solely and temporarily suspended some forms of contact and cooperation with Russia and decided to reintroduce them in 2015. Germany engaged in hammering Western sanctions against Russia and their implementation during 2014-18. It concurrently supported Ukraine in its endeavors to achieve association with the EU in 2016. Simultaneously, Russia took advantage of its trump cards in the form of its presence in Germany (“Russian Germans”, media: Sputnik and RT as well as sympathy in some political and social circles) to prop up anti-Western and populist tendencies in this country.
Źródło:
Studia Politologica Ucraino-Polona; 2018, 8; 58-70
2312-8933
Pojawia się w:
Studia Politologica Ucraino-Polona
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Discrete homing problems
Autorzy:
Lefebvre, M.
Kounta, M
Powiązania:
https://bibliotekanauki.pl/articles/964041.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
optimal control
principle of optimality
absorption problems
Opis:
We consider the so-called homing problem for discrete-time Markov chains. The aim is to optimally control the Markov chain until it hits a given boundary. Depending on a parameter in the cost function, the optimizer either wants to maximize or minimize the time spent by the controlled process in the continuation region. Particular problems are considered and solved explicitly. Both the optimal control and the value function are obtained.
Źródło:
Archives of Control Sciences; 2013, 23, 1; 5-18
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Editors notes: Social policies and welfare in the multicultural society
Autorzy:
Danuta, Lalak,
Powiązania:
https://bibliotekanauki.pl/articles/893012.pdf
Data publikacji:
2018-09-04
Wydawca:
Uniwersytet Warszawski. Wydawnictwa Uniwersytetu Warszawskiego
Tematy:
social pedagogy
public policy
welfare
social problems
Opis:
The presented articles are just an introduction to the vast and important issues located at the interface between social pedagogy and public policy. In this area the real impact of social pedagogy on the social reality is expressed.
Źródło:
Papers of Social Pedagogy; 2018, 9(2); 5-5
2392-3083
Pojawia się w:
Papers of Social Pedagogy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Visualizing the scientific information nowadays: the problems and challenges
Autorzy:
Osińska, Veslava
Powiązania:
https://bibliotekanauki.pl/articles/473846.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Marii Curie-Skłodowskiej. Instytut Informacji i Bibliotekoznawstwa
Tematy:
information visualization
visualization problems
science maps
Infovis
Opis:
In recent years, a comparably fresh research field — information visualization has become commonly available for the researchers of all specialities. Information or knowledge maps play a role of an interface for the analysis and intensive study of scientific community and knowledge domains development. The popularity of visualization techniques and interdisciplinary framework has resulted in many problems that have not been solved since the field had emerged. The article introduces the instrumental problems and challenges in this field. Exposing the functions information visualization allows to understand the difficulties and barriers within the whole visualizing process. A particular example of insight into the Polish science map is considered in the context of a new knowledge.
Źródło:
Informatio et Scientia. Information Science Research; 2018, 1(1); 30-39
2544-9664
Pojawia się w:
Informatio et Scientia. Information Science Research
Dostawca treści:
Biblioteka Nauki
Artykuł

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