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Tytuł:
Cone solutions of multi-order fractional difference systems
Autorzy:
Girejko, E.
Mozyrska, D.
Powiązania:
https://bibliotekanauki.pl/articles/206510.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
fractional difference operator
fractional difference equation
cone solutions
Opis:
The fractional difference system of equations with different fractional orders is considered. We obtain the existence and uniqueness results for the initial value problem. Cone solutions are presented. An example is given to illustrate the results.
Źródło:
Control and Cybernetics; 2013, 42, 2; 419-429
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On oscillatory solutions of certain difference equations
Autorzy:
Grzegorczyk, G.
Werbowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/255794.pdf
Data publikacji:
2006
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
difference equations
oscillation
Opis:
Some difference equations with deviating arguments are discussed in the context of the oscillation problem. The aim of this paper is to present the sufficient conditions for oscillation of solutions of the equations discussed.
Źródło:
Opuscula Mathematica; 2006, 26, 2; 317-326
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On asymptotic expansions of global errors
Autorzy:
Pfeifer, Eckhard
Powiązania:
https://bibliotekanauki.pl/articles/747786.pdf
Data publikacji:
1990
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
Finite difference methods
Opis:
.
We consider a linear partial differential equation with constant coefficients and the corresponding difference equation. Conditions are given under which the error possesses an asymptotic expansion with respect to h. These results are applied to obtain asymptotic expansions of some quadratures and of the approximate solution of a boundary value problem for a second order differential equation.
Źródło:
Mathematica Applicanda; 1990, 18, 32
1730-2668
2299-4009
Pojawia się w:
Mathematica Applicanda
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cross-national sanctions and green innovation: Worldwide investigation
Autorzy:
Fu, Qiang
Chang, Chun-Ping
Powiązania:
https://bibliotekanauki.pl/articles/39993687.pdf
Data publikacji:
2024
Wydawca:
Instytut Badań Gospodarczych
Tematy:
difference-in-difference model
green innovation
cross-national sanction
Opis:
Research background: Cross-national sanctions are external factors with high uncertainty. The current situation of green innovation is not optimistic and the future of the uncertain development is worth exploring. Purpose of the article: This study intends to investigate how cross-national sanctions affect green innovations by examining data from 130 countries from 1990 to 2020. We use six different forms of sanctions (including those from the U.S., EU, UN, as well as unilateral, plurilateral, and economic sanctions) as the primary explanatory variables, with environmental management innovations serving as a proxy for green innovations. Methods: Difference-in-Difference (DID) technique; Logit model. Findings & value added: The number of environmental management inventions produced by a nation's inventors is negatively affected by plurilateral and economic sanctions, as well as by the US and the EU sanctions, while other types of sanctions have weaker effects. In terms of sub-indicators, plurilateral and the US sanctions have a serious negative impact on air pollution control and water pollution control inventions, while plurilateral, The EU and economic sanctions have a negative impact on waste management innovations. However, unilateral and the UN sanctions have no apparent effect on any type of environmental technology. Further logit model tests show that the US and economic sanctions lead to a decrease in green innovations. Moreover, the difference between Asian and African countries is that the negative effects of plurilateral, the U.S., the EU, and economic sanctions are more obvious in African countries, while cross-national sanctions have no significant impact on Asian countries. The results of our study should help countries under sanctions to respond more effectively to environmental progress.
Źródło:
Oeconomia Copernicana; 2024, 15, 2; 435-469
2083-1277
Pojawia się w:
Oeconomia Copernicana
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Edge Reduced Skolem Difference Mean Number of Some Graphs
Autorzy:
Murugan, K.
Powiązania:
https://bibliotekanauki.pl/articles/1192710.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Skolem difference mean graph
edge reduced skolem difference mean number
skolem difference mean labeling
some graphs
Opis:
A graph G =(V,E) with p vertices and q edges is said to have skolem difference mean labeling if it is possible to label the vertices x ϵ V with distinct elements f (x) from {1,2,3,…,p+q} in such a way that the edge e =uv is labeled with |f(u)-f(v)|/2 if |f(u)-f(v)| is even and (|f(u)-f(v)|+1)/2 if |f(u)-f(v)| is odd and the resulting labels of the edges are distinct and are from {1,2,3,…,q}. A graph that admits skolem difference mean labeling is called a skolem difference mean graph. In this paper, the author studied the edge reduced skolem difference mean number of some graphs.
Źródło:
World Scientific News; 2016, 30; 129-142
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On the nonoscillatory behavior of solutions of three classes of fractional difference equations
Autorzy:
Grace, Said Rezk
Alzabut, Jehad
Punitha, Sakthivel
Muthulakshmi, Velu
Adiguzel, Hakan
Powiązania:
https://bibliotekanauki.pl/articles/255333.pdf
Data publikacji:
2020
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
Caputo difference operator
nonoscillation criteria
fractional difference equation mathematical inequalities
Opis:
In this paper, we study the nonoscillatory behavior of three classes of fractional difference equations. The investigations are presented in three different folds. Unlike most existing nonoscillation results which have been established by employing Riccati transfor mation technique, we employ herein an easily verifiable approach based on the fractional Taylor’s difference formula, some features of discrete fractional calculus and mathematical inequalities. The theoretical findings are demonstrated by examples. We end the paper by a concluding remark.
Źródło:
Opuscula Mathematica; 2020, 40, 5; 549-568
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Conditions for asymptotic stability of first order scalar differential-difference equation with complex coefficients
Autorzy:
Kapica, Rafał
Zawiski, Radosław
Powiązania:
https://bibliotekanauki.pl/articles/27314669.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
first order differential-difference equation with complex coefficients
stability of differential-difference equation
characteristic exponential polynomial of differential-difference equation
retarded differential-difference equation
DDE
Opis:
We investigate a scalar characteristic exponential polynomial with complex coefficients associated with a first order scalar differential-difference equation. Our analysis provides necessary and sufficient conditions for allocation of the roots in the complex open left half-plane what guarantees asymptotic stability of the differential-difference equation. The conditions are expressed explicitly in terms of complex coefficients of the characteristic exponential polynomial, what makes them easy to use in applications. We show examples including those for retarded PDEs in an abstract formulation.
Źródło:
Archives of Control Sciences; 2023, 33, 3; 607--629
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Różnica, która boli. Fenomenologiczny aspekt nierówności społecznych w kontekście procesów tożsamościowych
Autorzy:
Leszniewski, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/2045777.pdf
Data publikacji:
2015-03-31
Wydawca:
Wydawnictwo Adam Marszałek
Tematy:
difference
exclusion
identity
individuality
Opis:
The article presents problem of social difference and the related mechanisms of exclusion. The paper shows the process how the difference needed in the world is born inequality, discrimination, human suffering, often as unwanted and unintended consequences of group processes. The factor differentiating way to experience the social difference and forms of engagement in reality, is the human identity. The text presents the arguments in favor of the thesis that the difference does not necessarily lead to inequality, and a key role in this process is the identity of the man, with his basic need of recognition. Educational activities are considered an important factor in institutional support in this process. Also shows the process of individualization (the problem of individualism) in the social world as an essential factor in the offending unfavorable balance between an inclusion and social exclusion.
Źródło:
Kultura i Edukacja; 2015, 1(107); 34-53
1230-266X
Pojawia się w:
Kultura i Edukacja
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Inclusion, integration, assimilation. Conceptions of incorporation of Others and definition of “freedom” in contemporary philosophy and political thought of modern liberal democracies: considerations of philosophers and cultural representations
Autorzy:
Pichnicka, Patrycja
Powiązania:
https://bibliotekanauki.pl/articles/531337.pdf
Data publikacji:
2019
Wydawca:
Fundacja Instytut Nauki o Polityce
Tematy:
Assimilation
Difference-neutral
Difference-specific
Distinctiveness
Equality
Freedom
Individualism
Integration
Queer
Opis:
Equality and freedom are the foundations of liberal democracy and the Western society. However, they can be differently defined, and their definition implicates the different conditions and shaping of both culture and society. The main line of distinction is the orientation of definitions of both equality and freedom: they can be individual-oriented or group-oriented. The philosophical dilemma about what is true freedom and true equality is also a practical problem: which definition should be applied in today’s social politics and how to integrate individuals and groups into a single multicultural postmodern society. I shall demonstrate the main conceptions and potential consequences of their application. Then I shall analyse cultural representations of those conceptions. Such representations not only reflect but also influence popular thinking. Finally, I shall try to draw some conclusions regarding the implementation of different social conceptions.
Źródło:
Polish Journal of Political Science; 2019, 5, 2; 61-85
2391-3991
Pojawia się w:
Polish Journal of Political Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Podobny w inności i inny w podobieństwie – rzecz o spotkaniu innego w ujęciu Józefa Tischnera
Similar in otherness and other in similarity: Józef Tischner on the encounter with the other
Autorzy:
Mizdrak, Inga
Powiązania:
https://bibliotekanauki.pl/articles/920174.pdf
Data publikacji:
2014-01-01
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
other
experience
relation
difference
Opis:
Otherness is encountered, noticed and, as the case may be, analyzed in a relation, because it is in a relation that the identity of I and the identity of You is revealed, and our identity is basically rooted in the individual constitution of a specific I and a specific You. The aim of the present study is to probe the phenomenon of otherness (alterity), and through it the fundamental question of who is the other we encounter, and next to show the main ways of experiencing the encounter with the other, whichalways occurs in the sphere of good and evil. In Józef Tischner’s view the experience of the other is a fundamental one, in that it reveals much of our own self-experience. My encounter with the other also throws into relief myself as the other and the fact that his otherness is different from mine. In the beginning of this discovery of otherness, the gap between I and You appears to be unbridgeable. But Tischner believes that the sensation of separateness and even of “being alien” assumes a kind of similarity,with the proviso that the latter occurs on the plane of our mutual being foreach other. Tischner stresses otherness in similarity and similarity in otherness, both constituted and coexistent in the relation between I and You. Tischner’s idea involves a paradox: to open oneself to the alterity of the other, we have in a way to “bear” our own otherness and thereby to come to be “for the other”.
Źródło:
Interdyscyplinarne Konteksty Pedagogiki Specjalnej; 2014, 7; 57-71
2300-391X
Pojawia się w:
Interdyscyplinarne Konteksty Pedagogiki Specjalnej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Relationship between gender role conflict and attitude towards seeking professional psychological help
Autorzy:
Loganathan, Nirooj
Foo, Fatt Mee
Powiązania:
https://bibliotekanauki.pl/articles/2129763.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
gender role conflict
attitude towards psychological help-seeking
gender difference
ethnic difference
Opis:
This study examined the relationship between gender role conflict and attitude towards psychological help-seeking. This study involved 120 university students from a university. Gender Role Conflict Scale was used to measure gender role conflict and Attitude towards Seeking Professional Psychological Help Scale-Short Form was used to measure attitude towards psychological help-seeking. The results found there is a significant negative relationship between gender role conflict and attitude towards seeking psychological help. The results suggest that it is essential for mental health professionals to recognise the impact of gender roles on the counselling process.
Źródło:
Polish Psychological Bulletin; 2019, 50, 4; 352-356
0079-2993
Pojawia się w:
Polish Psychological Bulletin
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Full-order observers for linear fractional multi-order difference systems
Autorzy:
Wyrwas, M.
Powiązania:
https://bibliotekanauki.pl/articles/199928.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
difference operators
fractional order difference system
observer
operator różniczkowy
obserwator
system różniczkowy
Opis:
The paper is devoted to the construction of observers for linear fractional multi–order difference systems with Riemann–Liouville– and Grünwald–Letnikov–type operators. Basing on the Z-transform method the sufficient condition for the existence of the presented observers is established. The behaviour of the constructed observer is demonstrated in numerical examples.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2017, 65, 6; 891-989
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fractional-order discrete model of an independent wheel electrical drive of the autonomous platform
Autorzy:
Bąkała, M.
Nowakowski, J.
Ostalczyk, P.
Powiązania:
https://bibliotekanauki.pl/articles/200875.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
fractional-order backward difference
difference equation
identification
model dyskretny
równanie różniczkowe
identyfikacja
Opis:
In the paper the linear time-invariant fractional-order models of the separated wheel closed-loop electrical drive of the autonomous platform are considered. As a reference model one considers the classical model described by the second-order linear difference equation. Two discrete-time fractional-order models are considered: non-commensurate and commensurate. According to the sum of the squared error criterion (SSE) one compares two-parameter integer-order model with the four-parameter non-commensurate and three-parameter commensurate fractional-order ones. Three mathematical models are built and simulated. The computer simulation results are compared with measured velocity of the real autonomous platform separate wheel closed-loop electrical drive.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2018, 66, 4; 433-440
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Extra Skolem Difference Mean Labeling of Some Graphs
Autorzy:
Sundari, G. Muppidathi
Murugan, K.
Powiązania:
https://bibliotekanauki.pl/articles/1030829.pdf
Data publikacji:
2020
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
F-tree
Skolem difference mean labeling
Y-tree
extra skolem difference mean labeling
Opis:
A graph G =(V,E) with p vertices and q edges is said to have skolem difference mean labeling if it is possible to label the vertices x ϵ V with distinct elements f (x) from the set {1,2…p+q} in such a way that the edge e =uv is labeled with |f(u)-f(v)|/2 if |f(u)-f(v)| is even and (|f(u)-f(v)|+1)/2 if |f(u)-f(v)| is odd and the resulting labels of the edges are distinct and are from {1,2…q}. A graph that admits skolem difference mean labeling is called a skolem difference mean graph. If one of the skolem difference mean labeling of G satisfies the condition that all the labels of the vertices are odd, then we call this skolem difference mean labeling an extra skolem difference mean labeling and call the graph G an extra skolem difference mean graph. In this paper, extra skolem difference mean labeling of some graphs are studied.
Źródło:
World Scientific News; 2020, 145; 210-221
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On asymptotic stability of a linear difference equation depending on parameters
Autorzy:
Przyłuski, M.
Powiązania:
https://bibliotekanauki.pl/articles/115517.pdf
Data publikacji:
2012
Wydawca:
Fundacja na Rzecz Młodych Naukowców
Tematy:
difference equation
asymptotic stability
optimisation
Opis:
The paper focuses on a linear diffrence equation depending on parameters. The equation is related to Good win’s theory of extrapolative expectations. The stability region of the equation is investigated. Conditions for asymptotic stability are formulated and presented as an optimisation problem, which is further analysed. Despite employing state-of-the-art solvers, numerical results have turned out to be too ambiguous to provide the basis for definite conclusions about the investigated stability region.
Źródło:
Challenges of Modern Technology; 2012, 3, 3; 11-14
2082-2863
2353-4419
Pojawia się w:
Challenges of Modern Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wykorzystanie metody pojedynczej różnicy do wyznaczenia współrzędnych statku powietrznego
Utilization single difference method for determination of aircraffs coordinates
Autorzy:
Krasuski, K.
Powiązania:
https://bibliotekanauki.pl/articles/270878.pdf
Data publikacji:
2014
Wydawca:
Centralny Ośrodek Badawczo-Rozwojowy Aparatury Badawczej i Dydaktycznej, COBRABiD
Tematy:
GLONASS
pojedyńcza różnica
single difference
Opis:
Artykuł przedstawia algorytm wyznaczenia współrzędnych statku powietrznego przy wykorzystaniu metody Single Difference Between-Satellites (SD B-S) dla obserwacji GLONASS. W tym celu stworzono autorski program SD_GNSS, którego kod źródłowy napisano w języku Scilab 5.3.2. Scharakteryzowano metodę SD B-S oraz opisano analizę dokładności pozycjonowania dla prezentowanej metody badawczej.
This paper presents algorithm to estimate aircraffs coordinates using Single Difference Between-Satellites (SD B-S) method based on GLONASS observations. For this purpose, author created specialist SD_GNSS software, which code source was written in Scilab 5.3.2 language. SD B-S method was characterized and positioning accuracy analysis for presented method was described.
Źródło:
Aparatura Badawcza i Dydaktyczna; 2014, 19, 4; 329-332
2392-1765
Pojawia się w:
Aparatura Badawcza i Dydaktyczna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
„Inny” w klasie szkolnej
The “other” in the classroom
Autorzy:
Muszyńska, Ewa
Powiązania:
https://bibliotekanauki.pl/articles/920297.pdf
Data publikacji:
2015-06-15
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
difference
rejection
education
systemic approach
Opis:
The article features a description and an analysis of the ‘other’ in the classroom – i.e. a student who differs (significantly) from their peers through, for example, a distinct personality trait, behavior, looks, background or religion. It also demonstrates how a classroom and the ‘other’, function in terms of their mutual dependencies. Finally, the article discusses effective educational methods designed for a classroom, where the ‘other’ is present.
Źródło:
Interdyscyplinarne Konteksty Pedagogiki Specjalnej; 2015, 9; 9-25
2300-391X
Pojawia się w:
Interdyscyplinarne Konteksty Pedagogiki Specjalnej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Minkowski difference and Sallee elements in an ordered semigroup
Autorzy:
Borowska, Danuta
Grzybowski, Jerzy
Powiązania:
https://bibliotekanauki.pl/articles/745931.pdf
Data publikacji:
2007
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
Minkowski difference
Sallee elements
semigroups
Opis:
In the manner of Pallaschke and Urbański ([5], chapter 3) we generalize the notions of the Minkowski difference and Sallee sets to a semigroup. Sallee set (see [7], definition of the family \(S\) on p. 2) is a compact convex subset \(A\) of a topological vector space \(X\) such that for all subsets \(B\) the Minkowski difference \(A -B\) of the sets \(A\) and \(B\) is a summand of \(A\). The family of Sallee sets characterizes the Minkowski subtraction, which is important to the arithmetic of compact convex sets (see [5]). Sallee polytopes are related to monotypic polytopes (see [4]). We generalize properties of Minkowski difference and Sallee sets to semigroup and investigate the families of Sallee elements in several specific semigroups.
Źródło:
Commentationes Mathematicae; 2007, 47, 1
0373-8299
Pojawia się w:
Commentationes Mathematicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Explicit Difference Schemes for Nonlinear Differential Functional Parabolic Equations with Mixed Derivatives - Convergence Analysis
Autorzy:
Poliński, Artur
Powiązania:
https://bibliotekanauki.pl/articles/745697.pdf
Data publikacji:
2005
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
Finite difference
stability
parabolic
nonlocal
Opis:
We study the initial-value problem for parabolic equations with mixed partial derivatives and constant coefficients, and with nonlinear and nonlocal right-hand sides. Nonlocal terms appear in the unknown function and its gradient. We analyze convergence of explicit finite difference schemes by means of discrete fundamental solutions.
Źródło:
Commentationes Mathematicae; 2005, 45, 2
0373-8299
Pojawia się w:
Commentationes Mathematicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Generating Skolem Difference Mean Graphs
Autorzy:
Mariselvi, S.
Murugan, K.
Powiązania:
https://bibliotekanauki.pl/articles/1075422.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Duplication of graph elements
Near skolem difference mean graphs
Skolem difference mean graphs
Opis:
A graph G (V, E) with p vertices and q edges is said to have skolem difference mean labeling if it is possible to label the vertices x V with distinct elements f(x) from {1,2,….,p+q} in such a way that the edge e = uv is labeledwith |f(u)-f(v)|/2 if |f(u)-f(v)| is even and (|f(u)-f(v)|+1)/2 if |f(u)-f(v)| is odd and the resulting edges get distinct labels from {1,2,…,q}. A graph that admits skolem difference mean labeling is called a Skolem difference mean graph A graph G = (V, E) with p vertices and q edges is said to have Near skolem difference mean labeling if it is possible to label the vertices x V with distinct elements f(x) from {1,2,….,p+q-1,p+q+2} in such a way that each edge e = uv, is labeled as f*(e) = |f(u)-f(v)|/2 if |f(u)-f(v)| is even and f*(e) =(|f(u)-f(v)|+1)/2 if |f(u)-f(v)| is odd. The resulting labels of the edges are distinct and from {1,2,…,q}. A graph that admits a Near skolem difference mean labeling is called a Near Skolem difference mean graph. In this paper, the authors generate skolem difference mean graphs from near skolem difference mean graphs.
Źródło:
World Scientific News; 2019, 126; 11-22
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reduction and continuation theorems for Brouwer degree and applications to nonlinear difference equations
Autorzy:
Mawhin, J.
Powiązania:
https://bibliotekanauki.pl/articles/255344.pdf
Data publikacji:
2008
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
Brouwer degree
nonlinear difference equations
Opis:
The aim of this note is to describe the continuation theorem of [39,40] directly in the context of Brouwer degree, providing in this way a simple frame for multiple applications to nonlinear difference equations, and to show how the corresponding reduction property can be seen as an extension of the well-known reduction formula of Leray and Schauder [24], which is fundamental for their construction of Leray-Schauder's degree in normed vector spaces.
Źródło:
Opuscula Mathematica; 2008, 28, 4; 541-560
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Difference labelling of cacti
Autorzy:
Sonntag, Martin
Powiązania:
https://bibliotekanauki.pl/articles/743380.pdf
Data publikacji:
2003
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
graph labelling
difference graph
cactus
Opis:
A graph G is a difference graph iff there exists S ⊂ IN⁺ such that G is isomorphic to the graph DG(S) = (V,E), where V = S and E = {{i,j}:i,j ∈ V ∧ |i-j| ∈ V}.
It is known that trees, cycles, complete graphs, the complete bipartite graphs $K_{n,n}$ and $K_{n,n-1}$, pyramids and n-sided prisms (n ≥ 4) are difference graphs (cf. [4]). Giving a special labelling algorithm, we prove that cacti with a girth of at least 6 are difference graphs, too.
Źródło:
Discussiones Mathematicae Graph Theory; 2003, 23, 1; 55-65
2083-5892
Pojawia się w:
Discussiones Mathematicae Graph Theory
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Flooded wetlands mapping from Sentinel-2 imagery with spectral water index : a case study of Kampinos National Park in central Poland
Autorzy:
Solovey, Tatiana
Powiązania:
https://bibliotekanauki.pl/articles/2059679.pdf
Data publikacji:
2020
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
remote sensing
Sentinel-2
flooded wetlands mapping
Modified Normalised Difference Water Index
MNDWI
Normalised Difference Pond Index
NDPI
Normalised Difference Turbidity Index
NDTI
Opis:
Flood monitoring of wetlands and floodplains is a new issue in remote sensing, as compared to the mapping of open water bodies. The method based on spectral water indices, calculated on the basis of green, red and shortwave infrared bands, is one of the most popular methods for the recognition of a water body in multispectral images. The recently introduced Sentinel-2 satellite can provide multispectral images with high spatial resolution. This new data set is potentially of great importance for flood mapping, due to its free access and the frequent revisit capabilities. In this study, three popular water indices (Modified Normalized Difference Water Index, Normalized Difference Pond Index and Normalized Difference Turbidity Index) were used. The efficiency of the proposed method was tested experimentally using the Sentinel-2 image for the Kampinos National Park in Poland. The experiment compared four extraction algorithms including three based on individual water indicators and one on a combination of them. The results showed that the 10-metre false colour composite produced significantly improved the recognition of flooding in wetland areas by comparison with single spectral water indices. In this way, flooded wetlands were mapped based on the Sentinel-2 data set for the years 2017-2018.
Źródło:
Geological Quarterly; 2020, 64, 2; 492--505
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Human Difference: Beyond Nomotropism
Autorzy:
Bielik-Robson, Agata
Powiązania:
https://bibliotekanauki.pl/articles/451513.pdf
Data publikacji:
2017-09-02
Wydawca:
Uniwersytet Warszawski. Wydział Filozofii
Tematy:
human difference
biopolitics
philosophical anthropology
psychoanalysis
Opis:
The main theme of this essay is f i n i t e l i f e, which is the bedrock of modern biopolitics. In the series of lectures devoted to the ‘birth of biopolitics,’ Michel Foucault defines it as a new system of ‘governing the living’ based on the natural cycle of birth and death, and the law of genesis kai phtora, ‘becoming and perishing.’ Foucault’s answer to modern biopolitics is to accept its basic premise – that life is finite, and, consequently, reduced to the natural law of birth and death – and then slightly correct the naive liberal trust in the ‘naturalness’ of human existence by appropriating and internalizing the true essence of the biopolitical paradigm: the disciplining practices. This essay contests Foucault’s minimalist Neostoic program of the ‘care of the self’ by demonstrating that we can still hope for a n o t h e r f i n i t u d e that refrains from any renaturalization of human existence.
Źródło:
Eidos. A Journal for Philosophy of Culture; 2017, 1, 1; 18-28
2544-302X
Pojawia się w:
Eidos. A Journal for Philosophy of Culture
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Some classes of Diophantine equations connected with McFarland's and Ma's conjectures
Autorzy:
Cao, Zhenfu
Grytczuk, Aleksander
Powiązania:
https://bibliotekanauki.pl/articles/728804.pdf
Data publikacji:
2000
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
difference sets
diophantine equations
Pell's equations
Opis:
In this paper we consider some special classes of Diophantine equations connected with McFarland's and Ma's conjectures about difference sets in abelian groups and we obtain an extension of known results.
Źródło:
Discussiones Mathematicae - General Algebra and Applications; 2000, 20, 2; 193-198
1509-9415
Pojawia się w:
Discussiones Mathematicae - General Algebra and Applications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Solutions of a class of singular linear systems of difference equations. Part 1
Autorzy:
Kanan, Asmaa M.
Powiązania:
https://bibliotekanauki.pl/articles/1030103.pdf
Data publikacji:
2020
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Drazin inverse
Rank
Singular difference equations
Opis:
We extend results of Campbell, Meyer, Jr. and Rose of applications of the Drazine inverse to linear systems of differential equations with singular constant coefficients to solutions of linear systems of difference equations A x_(n+1)+B x_n= f_n ,n≥0 when A and B are m×m complex matrices and may both singular, under conditions that rank(A)=1 and trace of A is not equal zero. f_n is an arbitrary function in C^m, and x_n∈C^m. We give a new closed form for all solutions of those systems when they are tractable, using the theory of the Drazin inverse, and a matrix K∈C^(m×m).
Źródło:
World Scientific News; 2020, 143; 53-66
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On the global attractivity and the periodic character of a recursive sequence
Autorzy:
Elsayed, E. M.
Powiązania:
https://bibliotekanauki.pl/articles/952823.pdf
Data publikacji:
2010
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
stability
periodic solutions
boundedness
difference equations
Opis:
In this paper we investigate the global convergence result, boundedness, and periodicity of solutions of the recursive sequence [formula], where the parameters a, b, c, d and e are positive real numbers and the initial conditions x-2, x-1 and x0 are positive real numbers.
Źródło:
Opuscula Mathematica; 2010, 30, 4; 431-446
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dylematy terapeutycznej wielokulturowości. Pomiędzy swojskością a innością
Autorzy:
Teusz, Grażyna
Powiązania:
https://bibliotekanauki.pl/articles/951759.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
multiculturalism
identity
difference
therapist
therapeutic process
Opis:
The article is an attempt to analyze the phenomenon of multiculturalism and the issues to accompany in the context of building and achieving human identity. The main emphasis is placed on presenting the psychosocial dimension of constructing identity and its interactive character. Social identity is the other essential part of the issue next to individual identity. The objects of the author’s attention here are therapeutic implications and dilemmas presented in the context of multiculturalism.
Źródło:
Kultura-Społeczeństwo-Edukacja; 2016, 10, 2; 181-190
2300-0422
Pojawia się w:
Kultura-Społeczeństwo-Edukacja
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Lipschitz differences and Lipschitz functions
Autorzy:
Balcerzak, Marek
Buczolich, Zoltán
Laczkovich, Miklós
Powiązania:
https://bibliotekanauki.pl/articles/966671.pdf
Data publikacji:
1997
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
Lipschitz function
circle group
difference function
Źródło:
Colloquium Mathematicum; 1997, 72, 2; 319-324
0010-1354
Pojawia się w:
Colloquium Mathematicum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Terminal control problem for processes represented by nonlinear multi parameter binary dynamic system
Autorzy:
Haci, Y. H.
Ozen, K.
Powiązania:
https://bibliotekanauki.pl/articles/969692.pdf
Data publikacji:
2009
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
Boolean function
difference equation
piecewise curve
Opis:
In this paper, nonlinear multi parameter binary difference equation system (MPBDS) and optimal piecewise process are analyzed. Since such difference equation system is over-determined, a theorem similar to Frobenius's theorem is proved on Galois field. An illustrative example, which can be solved by applying terminal control problem is given. Then, terminal control problem is examined and it is shown that the principle of optimality is satisfied.
Źródło:
Control and Cybernetics; 2009, 38, 3; 625-633
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Oscillation of solutions to non-linear difference equations with several advanced arguments
Autorzy:
Pinelas, S.
Dix, J. G.
Powiązania:
https://bibliotekanauki.pl/articles/255605.pdf
Data publikacji:
2017
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
advanced difference equation
non-oscillatory solution
Opis:
This work concerns the oscillation and asymptotic properties of solutions to the non-linear difference equation with advanced arguments [formula]. We establish sufficient conditions for the existence of positive, and negative solutions. Then we obtain conditions for solutions to be bounded, convergent to positive infinity and to negative infinity and to zero. Also we obtain conditions for all solutions to be oscillatory.
Źródło:
Opuscula Mathematica; 2017, 37, 6; 887-898
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A control strategy of a permanent magnet synchronous motor for an electric vehicle
Autorzy:
Xie, Jianxin
Liu, Zimeng
Powiązania:
https://bibliotekanauki.pl/articles/2200826.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
PMSM
SVPWM method
argument
voltage difference
Opis:
The traditional modulation method of the inverter in a permanent magnet synchronous mo- tor (PMSM) is lengthy and computationally intensive. Based on this, a simplified sinusoidal pulse width modulation method is proposed. In this method, voltage space vectors in each sector are synthesized, and the sector in which the synthesized vector is located is determined by the rotation angle of the resultant vector, and then the acting time of the basic vector is calculated by the voltage difference of the phase voltage. The problem of trigonometric functions and coordinate conversion is not involved in the whole calculation process, the calculation model is simple, and it is easy to realize digitization. Mathematical modeling is carried out by using the simulation software Matlab, and the correctness of the calculation method after optimization is verified, which provides an idea for the later research of the inverter modulation method.
Źródło:
Journal of Theoretical and Applied Mechanics; 2022, 60, 4; 673--685
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Smallest Non-Autograph
Autorzy:
Baumer, Benjamin S.
Wei, Yijin
Bloom, Gary S.
Powiązania:
https://bibliotekanauki.pl/articles/31340873.pdf
Data publikacji:
2016-08-01
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
graph labeling
difference graphs
autographs
monographs
Opis:
Suppose that G is a simple, vertex-labeled graph and that S is a multiset. Then if there exists a one-to-one mapping between the elements of S and the vertices of G, such that edges in G exist if and only if the absolute difference of the corresponding vertex labels exist in S, then G is an autograph, and S is a signature for G. While it is known that many common families of graphs are autographs, and that infinitely many graphs are not autographs, a non-autograph has never been exhibited. In this paper, we identify the smallest non-autograph: a graph with 6 vertices and 11 edges. Furthermore, we demonstrate that the infinite family of graphs on n vertices consisting of the complement of two non-intersecting cycles contains only non-autographs for n ≥ 8.
Źródło:
Discussiones Mathematicae Graph Theory; 2016, 36, 3; 577-602
2083-5892
Pojawia się w:
Discussiones Mathematicae Graph Theory
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
1D and 2D finite-difference operators for periodic functions on arbitrary mesh
Autorzy:
Sobczyk, Tadeusz Jan
Powiązania:
https://bibliotekanauki.pl/articles/2042801.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
arbitrary meshes
finite-difference operators
partial finite difference operators
periodic function
two-variable periodic functions
Opis:
This paper presents novel discrete differential operators for periodic functions of one- and two-variables, which relate the values of the derivatives to the values of the function itself for a set of arbitrarily chosen points over the function’s area. It is very characteristic, that the values of the derivatives at each point depend on the function values at all points in that area. Such operators allow one to easily create finite-difference equations for boundaryvalue problems. The operators are addressed especially to nonlinear differential equations.
Źródło:
Archives of Electrical Engineering; 2022, 71, 1; 265-275
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
New oscillation conditions for first-order linear retarded difference equations with non-monotone arguments
Autorzy:
Attia, Emad R.
El-Matary, Bassant M.
Chatzarakis, George E.
Powiązania:
https://bibliotekanauki.pl/articles/29519176.pdf
Data publikacji:
2022
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
oscillation
difference equations
non-monotone argument
Opis:
In this paper, we study the oscillatory behavior of the solutions of a first-order difference equation with non-monotone retarded argument and nonnegative coefficients, based on an iterative procedure. We establish some oscillation criteria, involving lim sup, which achieve a marked improvement on several known conditions in the literature. Two examples, numerically solved in MAPLE software, are also given to illustrate the applicability and strength of the obtained conditions.
Źródło:
Opuscula Mathematica; 2022, 42, 6; 769-791
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Periodic, nonperiodic, and chaotic solutions for a class of difference equations with negative feedback
Autorzy:
Kennedy, Benjamin B.
Powiązania:
https://bibliotekanauki.pl/articles/29519375.pdf
Data publikacji:
2023
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
difference equation
negative feedback
circle map
Opis:
We study the scalar difference equation $ x(k+1)=x(k)+\frac{f(x(k-N))}{N} $ where f is nonincreasing with negative feedback. This equation is a discretization of the well-studied differential delay equation $ x′(t) = f(x(t − 1)). $ We examine explicit families of such equations for which we can find, for infinitely many values of N and appropriate parameter values, various dynamical behaviors including periodic solutions with large numbers of sign changes per minimal period, solutions that do not converge to periodic solutions, and chaos. We contrast these behaviors with the dynamics of the limiting differential equation. Our primary tool is the analysis of return maps for the difference equations that are conjugate to continuous self-maps of the circle.
Źródło:
Opuscula Mathematica; 2023, 43, 4; 507-546
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Le sens de l’altérité selon Simone de Beauvoir
The Sense of Otherness According to Simone de Beauvoir
Autorzy:
Ledwina, Anna
Powiązania:
https://bibliotekanauki.pl/articles/2020989.pdf
Data publikacji:
2020
Wydawca:
Komisja Nauk Filologicznych Polskiej Akademii Nauk, Oddział we Wrocławiu
Tematy:
Beauvoir
otherness
love
difference
opposites
androgyne
Opis:
In Simone de Beauvoir’s œuvre, the problem of love and the relationship with the Other turns out to be fundamental. The need to realize one’s own desires forces the individual to open for the Other who – instead of making the relationship more attractive – brings about its breakup. The Author raises this issue in terms of androgyny interpreted as a relationship between two people, which is possible only in the spheres of total freedom and reciprocity, both spiritual and sexual, revealing an inherent influence of other people on our lives.The texts by Beauvoir, whose idée fixe is a search for the wholeness, enable one to understand that otherness is also understood as a struggle to change the perception of femininity and of independence. The other also fascinates us by difference. It encourages one to get to know oneself, one’s possibilities and limitations, as well as one’s identity. By looking into the eyes of the other (like in a mirror) a person has an opportunity to create a new reality, thereby rejecting stereotypes and a traditional value system. Thus, finding a sense of life and realizing existing differences become possible.The multidimensionality of the concept of otherness enables the critic to present the writer’s original vision, propagating the individual development and autonomy, defined by relationships with others and, at the same time, by his or her pursuit of an existential fullness with another human being.
Źródło:
Academic Journal of Modern Philology; 2020, 9; 311-319
2299-7164
2353-3218
Pojawia się w:
Academic Journal of Modern Philology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Równościowe upodmiotowienia i różnica płciowa. Jak poezją wyjść z podrzędności
Equality of empowerment and gender difference. How poetry can help to overcome inferiority
Autorzy:
Kałuża, Anna
Powiązania:
https://bibliotekanauki.pl/articles/511719.pdf
Data publikacji:
2017
Wydawca:
Wydawnictwo Uniwersytetu Śląskiego
Tematy:
sex difference
equality
feminism
poetry
woman
Opis:
The aim of the article is to present recent fundamental changes in thinking about poetry. Authors of books published in the years 2010–2016 are much more aware of the political and social situation than those who were debuting right after the year 2000. They are also aware of the context of artistic creation and aesthetic criteria. They seek to redefine the production and distribution of poetic works and react (as their predecessors did) with resistance to social and political oppression.
Źródło:
Postscriptum Polonistyczne; 2017, 2 (20) Oblicza kobiecości; 27-41
1898-1593
2353-9844
Pojawia się w:
Postscriptum Polonistyczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Praca różnicy płciowej Wokół związków myśli Luce Irigaray z włoskimi ruchami feministycznymi
Sexuate Difference at Work. On Relations of Luce Irigaray’s Thought with Italian Feminist Movements
Autorzy:
Szopa, Katarzyna
Powiązania:
https://bibliotekanauki.pl/articles/534762.pdf
Data publikacji:
2019
Wydawca:
Wydawnictwo Uniwersytetu Śląskiego
Tematy:
sexuate difference
reproductive work
feminism
autonomism
Opis:
This article’s aim is an attempt at discussing the notion of reproductive work/labour pondered over by female representatives of Italian autonomism and alsoeminent in Luce Irigaray’s philosophy. By pointing to the said relationship between Irigaray’s thought and Italian feminist movements, the author indicates the missing link in feminist historiography, referring feminist thought back to the origins of Marxist philosophy. Following the trail of thought of both the feminist female theoreticians and Luce Irigaray, the author proves that through regaining the significance of reproductive work/labour playing crucial role in patriarchal-capitalist economy, it is actually possible to redefine the gender distribution of labour/work based on exploitation of women in economic, social, political, and cultural dimension. Putting sexuate difference to the eponymous work would, therefore, involve intertwining those two programmes: Irigaray’s philosophy and Italian autonomism, accompanied by a political programme per se, which would transform social relations between men and women,thereby creating new worlds and new relations. 
Źródło:
Śląskie Studia Polonistyczne; 2019, 13, 1; 49-67
2084-0772
2353-0928
Pojawia się w:
Śląskie Studia Polonistyczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
O nowych sposobach zarządzania fizyczną różnicą na ekranie: autotematyzm i intencja zwrotna wobec reprezentacji „anormalnego” ciała w filmie
On new modes of managing physical difference on screen: autothematism and reflexivity in the context of representation of “abnormal” bodies in film
Autorzy:
Cybulski, Adam
Powiązania:
https://bibliotekanauki.pl/articles/1068835.pdf
Data publikacji:
2020-11-26
Wydawca:
Łódzkie Towarzystwo Naukowe
Tematy:
autothematism
reflexivity
physical difference
abnormal body
Opis:
The paper discusses particular modes of audiovisual self-consciousness in autothematic and highly (self )reflexive films, equipped with “empowered” devices of narration that question popular conventions of portraying physical otherness. Living in Oblivion (1995), Storytelling (2001), Jeremy the Dud (2017), and Chained for Life (2018) are analysed in contexts of lowering narrative illusion methods of managing “troublesome bodies” on screen, as well as the long tradition of “disabling” portrayals of visible dissimilarities (e.g. little person as oneiric figure, inspiring “supercrip” stereotype).
Źródło:
Zagadnienia Rodzajów Literackich; 2020, 63, 2; 119-135
0084-4446
Pojawia się w:
Zagadnienia Rodzajów Literackich
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Norm estimates of discrete Schrödinger operators
Autorzy:
Szwarc, Ryszard
Powiązania:
https://bibliotekanauki.pl/articles/966035.pdf
Data publikacji:
1998
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
norm estimate
Harper's operator
difference operator
Opis:
Harper's operator is defined on $\ell^2({\sym Z})$ by $$ H_\theta \xi(n) = \xi(n+1) + \xi(n-1) + 2\cos n\theta\, \xi(n), $$ where $\theta\! \in \![0,\pi]$. We show that the norm of $\|H_\theta\|$ is less than or equal to $2\sqrt{2}$ for $\pi/2 \le\theta\le \pi$. This solves a conjecture stated in [1]. A general formula for estimating the norm of self-adjoint tridiagonal infinite matrices is also derived.
Źródło:
Colloquium Mathematicum; 1998, 76, 1; 153-160
0010-1354
Pojawia się w:
Colloquium Mathematicum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Convergence results for unbounded solutions of first order non-linear differential-functional equations
Autorzy:
Leszczyński, Henryk
Powiązania:
https://bibliotekanauki.pl/articles/1311094.pdf
Data publikacji:
1996
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
error estimates
recurrence inequalities
difference scheme
Opis:
We consider the Cauchy problem in an unbounded region for equations of the type either $D_{t}z(t,x) = f(t,x,z(t,x),z_{(t,x)},D_{x}z(t,x))$ or $D_{t}z(t,x)= f(t,x,z(t,x),z,D_{x}z(t,x))$. We prove convergence of their difference analogues by means of recurrence inequalities in some wide classes of unbounded functions.
Źródło:
Annales Polonici Mathematici; 1996, 64, 1; 1-16
0066-2216
Pojawia się w:
Annales Polonici Mathematici
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rousseau i nowożytne spotkanie z Innym
Rousseau and a modern encounter with the Other
Autorzy:
Zielka, Sylwester
Powiązania:
https://bibliotekanauki.pl/articles/1388541.pdf
Data publikacji:
2015-09-30
Wydawca:
Uniwersytet Gdański. Wydawnictwo Uniwersytetu Gdańskiego
Tematy:
Rousseau
Other
modern philosophy
cultural difference
Opis:
The paper situates the thought of Jean Jacques Rousseau in the context of the 17th and 18th century social and political debate on the possibility of creating a better society, which intensified with the crisis of feudal system and early modern discovery of the Other. The paper also discusses consequences of this debate for shaping anthropology as a field of knowledge and understanding culture of the time. The idea of a “noble savage” according to which non-Europeans, i.e., the “primitive” people living in the state of nature as free and equal, without concerns and inconveniences of civilization, is contrasted with an opposite project of a “degenerate savage” of Thomas Hobbes, who used it as a justification for absolute monarchy in European countries and of European societies over non-Western ones.
Źródło:
Problemy Wczesnej Edukacji; 2015, 30, 3; 104-112
1734-1582
2451-2230
Pojawia się w:
Problemy Wczesnej Edukacji
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Difference labelling of digraphs
Autorzy:
Sonntag, Martin
Powiązania:
https://bibliotekanauki.pl/articles/744591.pdf
Data publikacji:
2004
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
graph labelling
difference digraph
oriented tree
Opis:
A digraph G is a difference digraph iff there exists an S ⊂ N⁺ such that G is isomorphic to the digraph DD(S) = (V,A), where V = S and A = {(i,j):i,j ∈ V ∧ i-j ∈ V}.For some classes of digraphs, e.g. alternating trees, oriented cycles, tournaments etc., it is known, under which conditions these digraphs are difference digraphs (cf. [5]). We generalize the so-called source-join (a construction principle to obtain a new difference digraph from two given ones (cf. [5])) and construct a difference labelling for the source-join of an even number of difference digraphs. As an application we obtain a sufficient condition guaranteeing that certain (non-alternating) trees are difference digraphs.
Źródło:
Discussiones Mathematicae Graph Theory; 2004, 24, 3; 509-527
2083-5892
Pojawia się w:
Discussiones Mathematicae Graph Theory
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Validation of Emotional Contagion Scale on the Indian Youth
Autorzy:
Agarwal, Sanchi Pawankumar
Gawali, Gautam
Puranik, Deepti
Powiązania:
https://bibliotekanauki.pl/articles/2159458.pdf
Data publikacji:
2022-12-31
Wydawca:
Wydawnictwo Adam Marszałek
Tematy:
emotional contagion
validation
reliability
gender difference
Opis:
The Emotional Contagion Scale (ECS) developed by Dr. Elaine Hatfield, is a self-report measure used to investigate the individual’s susceptibility to catch another person’s emotions and experience the same. The catching of emotions could be conscious or unconscious. The study aims to validate the Emotional Contagion scale on the Indian subcontinent population for future use and application. The original American scale consisted of 15 items to be responded to by selecting the suitable option from given five, was given to an Indian sample of 498 individuals. To check the validity, Confirmatory Factor Analysis (CFA) was performed. Gender differences were assessed and it was observed that men were high on catching and experiencing the emotions of others as compared to women. The Indian sample on ECS shows moderate to high reliability and high content validity. It thus concludes that the Emotional Contagion scale is valid for future use on the Indian Population.
Źródło:
The New Educational Review; 2022, 70; 159-170
1732-6729
Pojawia się w:
The New Educational Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Women’s equality: the final redemption
Autorzy:
Savage, Deborah
Powiązania:
https://bibliotekanauki.pl/articles/49062080.pdf
Data publikacji:
2024-02-03
Wydawca:
Uniwersytet Warszawski. Wydawnictwa Uniwersytetu Warszawskiego
Tematy:
feminism
woman
genesis
creation
equality
difference
Opis:
The aim of this paper is to correct a historical error, one that I will argue is at the heart of the contemporary feminist movement: the ancient claim, grounded in a flawed understanding of the reproductive act, that woman is inferior to man. I will show that the lineage of this can be traced as far back as the pre-Socratic philosophers, finally finding its earliest concrete expression in a claim most have either dismissed, forgotten, or never heard: Aristotle’s argument that women are merely “malformed males” and are therefore “inferior to man”. The theory found support in the first century with a historical interpretation of Genesis 2:18-23, traceable in particular to the Hellenistic Jewish philosopher, Philo (BC 13-AD 54). Philo’s own theory about woman echoed that of Aristotle’s; his legacy includes the vague feeling that Scripture itself declares that, since woman is created after man, she is necessarily subservient to him. She becomes, as it were, the “second sex”. The combination of Aristotle and Philo proved too persuasive even for the mind of St. Thomas Aquinas and the theory accelerated and then spread through the university system inaugurated during the Middle Ages, subsequently informing the social structures and norms of Western civilization, going mostly unchallenged throughout human history, silently persisting even into the present time. This error represents what can be called a chronic “wound” in our intellectual tradition. And it is a wound that must be healed. I argue that the antidote is to correct this account and that it can be defeated on its own terms. Through the lens of Hebraic and Aristotelian-Thomistic anthropology, and building on the insights of St. John Paul II, I provide a robust, philosophically and theologically grounded account of man and woman from within the Catholic exegetical tradition, showing that man and woman are both equally human, equally endowed with intellect, will, and freedom while at the same time reflecting two different ways of being in the world.
Źródło:
Studia Iuridica; 2023, 99; 211-232
0137-4346
Pojawia się w:
Studia Iuridica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On criteria for algebraic independence of collections of functions satisfying algebraic difference relations
Autorzy:
Ogawara, H.
Powiązania:
https://bibliotekanauki.pl/articles/255709.pdf
Data publikacji:
2017
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
difference algebra
systems of algebraic difference equations
algebraic independence
Vignéras’multiple gamma functions
q-polylogarithm functions
Opis:
This paper gives conditions for algebraic independence of a collection of functions satisfying a certain kind of algebraic difference relations. As applications, we show algebraic independence of two collections of special functions: (1) Vignéras’ multiple gamma functions and derivatives of the gamma function, (2) the logarithmic function, q-exponential functions and q-polylogarithm functions. In a similar way, we give a generalization of Ostrowski’s theorem.
Źródło:
Opuscula Mathematica; 2017, 37, 3; 457-472
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Local controllability of nonlinear discrete-time fractional order systems
Autorzy:
Mozyrska, D.
Pawłuszewicz, E.
Powiązania:
https://bibliotekanauki.pl/articles/201944.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
fractional difference operator
fractional difference initial value problem
nonlinear fractional order system
linear approximation
controllability problem
Opis:
The Riemann-Liouville, Caputo and Gr¨unwald-Letnikov fractional order difference operators are discussed and used to state and solve the controllability problem of a nonlinear fractional order discrete-time system. It is shown that independently of the type of fractional order difference, such a system is locally controllable in q steps if its linear approximation is globally controllable in q steps.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2013, 61, 1; 251-256
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Existence criteria for positive solutions of a nonlinear difference inequality
Autorzy:
Cheng, Sui
Zhang, Guang
Powiązania:
https://bibliotekanauki.pl/articles/1208008.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
Sturm type comparison theorem
limit comparison theorem
nth order linear difference equation
eventually positive solution
eventually positive nonincreasing solution
neutral difference equation
nonlinear delay difference inequality
Opis:
This paper is concerned with a class of nonlinear difference inequalities which include many different classes of difference inequalities and equations as special cases. By means of a Riccati type transformation, necessary and sufficient conditions for the existence of eventually positive solutions and positive nonincreasing solutions are obtained. Various type of comparison theorems are also derived as applications, which extends many theorems in the literature.
Źródło:
Annales Polonici Mathematici; 2000, 73, 3; 197-220
0066-2216
Pojawia się w:
Annales Polonici Mathematici
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Difference functional inequalities and applications
Autorzy:
Szafrańska, A.
Powiązania:
https://bibliotekanauki.pl/articles/255602.pdf
Data publikacji:
2014
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
initial boundary value problems
difference functional inequalities
difference methods
stability and convergence
interpolating operators
error estimates
Opis:
The paper deals with the difference inequalities generated by initial boundary value problems for hyperbolic nonlinear differential functional systems. We apply this result to investigate the stability of constructed difference schemes. The proof of the convergence of the difference method is based on the comparison technique, and the result for difference functional inequalities is used. Numerical examples are presented.
Źródło:
Opuscula Mathematica; 2014, 34, 2; 405-423
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Two Years of the Bank Tax in Poland – an Analysis of Effects
Autorzy:
Jarno, Klaudia
Kołodziejczyk, Hanna
Powiązania:
https://bibliotekanauki.pl/articles/485418.pdf
Data publikacji:
2018-09-13
Wydawca:
Bankowy Fundusz Gwarancyjny
Tematy:
bank tax
banking sector
difference-in-differences
Opis:
The main purpose of the paper is an attempt to assess the effects of introducing a bank levy in Poland on selected indicators of the banking sector using the difference-in-differences method. The employment of the difference-in-differences method does not result is strict findings regarding the incidence of the newly introduced bank levy. Although we observe negative effects on ROA, the value of assets, and the value of loans, and positive effects on the number of employees, our results are not statistically significant.
Źródło:
Bezpieczny Bank; 2018, 2 (71); 86-95
1429-2939
Pojawia się w:
Bezpieczny Bank
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ring-like structures with unique symmetric difference related to quantum logic
Autorzy:
Dorninger, Dietmar
Länger, Helmut
Maczyński, Maciej
Powiązania:
https://bibliotekanauki.pl/articles/729037.pdf
Data publikacji:
2001
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
generalized Boolean quasiring
symmetric difference
quantum logic
Opis:
Ring-like quantum structures generalizing Boolean rings and having the property that the terms corresponding to the two normal forms of the symmetric difference in Boolean algebras coincide are investigated. Subclasses of these structures are algebraically characterized and related to quantum logic. In particular, a physical interpretation of the proposed model following Mackey's approach to axiomatic quantum mechanics is given.
Źródło:
Discussiones Mathematicae - General Algebra and Applications; 2001, 21, 2; 239-253
1509-9415
Pojawia się w:
Discussiones Mathematicae - General Algebra and Applications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Asymptotic dichotomy for nonoscillatory solutions of a nonlinear difference equation
Autorzy:
Zhang, Guang
Cheng, Sui
Powiązania:
https://bibliotekanauki.pl/articles/1338877.pdf
Data publikacji:
1999
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
difference equation
eventually positive solution
asymptotic dichotomy
Opis:
A nonlinear difference equation involving the maximum function is studied. We derive sufficient conditions in order that eventually positive or eventually negative solutions tend to zero or to positive or negative infinity.
Źródło:
Applicationes Mathematicae; 1998-1999, 25, 4; 393-399
1233-7234
Pojawia się w:
Applicationes Mathematicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Conjugation to a shift and the splitting of invariant manifolds
Autorzy:
Gelfreich, Vassiliĭ
Powiązania:
https://bibliotekanauki.pl/articles/1339264.pdf
Data publikacji:
1997
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
normal form
separatrix splitting
finite-difference equation
Opis:
We give sufficient conditions for a diffeomorphism in the plane to be analytically conjugate to a shift in a complex neighborhood of a segment of an invariant curve. For a family of functions close to the identity uniform estimates are established. As a consequence an exponential upper estimate for splitting of separatrices is established for diffeomorphisms of the plane close to the identity. The constant in the exponent is related to the width of the analyticity domain of the limit flow separatrix. Unlike the previous works the cases of non-area-preserving maps and parabolic fixed points are included.
Źródło:
Applicationes Mathematicae; 1996-1997, 24, 2; 127-140
1233-7234
Pojawia się w:
Applicationes Mathematicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Differential Cryptanalysis of New Qamal Encryption Algorithm
Autorzy:
Algazy, Kunbolat T.
Babenko, Ludmila K.
Biyashev, Rustem G.
Ishchukova, Evgeniya A.
Romaniuk, Ryszard
Kapalova, Nursulu A.
Nysynbaeva, Saule E.
Smolarz, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/1844475.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
cryptography
block cipher
difference
differential cryptanalysis
probability
Opis:
Currently, the Republic of Kazakhstan is developing a new standard for symmetric data encryption. One of the candidates for the role of the standard is the Qamal encryption algorithm developed by the Institute of Information and Computer Technologies (Almaty, Republic of Kazakhstan). The article describes the algorithm. Differential properties of the main operations that make up the Qamal cypher are considered in the questions of stability. We have shown that for a version with a 128-bit data block and the same secret key size for three rounds of encryption it is difficult to find the right pairs of texts with a probability of 2–120, which makes differential cryptanalysis not applicable to the Qamal cypher.
Źródło:
International Journal of Electronics and Telecommunications; 2020, 66, 4; 647-653
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Odkrywanie przez rodziców adopcyjnych i zastępczych odmienności dziecka wynikającej z niepełnosprawności. Studium fenomenograficzne
A child’s otherness resulting from disability. A phenomenographic study of adoptive and foster parents
Autorzy:
Ćwirynkało, Katarzyna
Bartnikowska, Urszula
Powiązania:
https://bibliotekanauki.pl/articles/1371192.pdf
Data publikacji:
2018-09-09
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
adoptive / foster family
disabled child
difference
otherness
Opis:
A certain percentage of disabled children are not raised in their biological families. It happens more and more often that the place of residence of such a child is not an institution but the adoptive or foster family. Increased prevalence of this type of families makes the study of this area of functioning of children with disabilities more and more important. The paper covers the issue of dealing with a child’s difference by their adoptive/foster parents. The difference has its source e. g. in a disability. The empirical part of the article is the result of qualitative research conducted with parents from 20 adoptive/foster families that raise a child with a disability (this is a part of a broader research project conducted by the authors with these families). The analysis of the interviews shows the ways to discover the otherness, the difference of the child, the ways to accept this otherness, and the importance they ascribe to the otherness of the child.
Źródło:
Interdyscyplinarne Konteksty Pedagogiki Specjalnej; 2017, 19; 15-37
2300-391X
Pojawia się w:
Interdyscyplinarne Konteksty Pedagogiki Specjalnej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
New aspects for the oscillation of first-order difference equations with deviating arguments
Autorzy:
Attia, Emad R.
El-Matary, Bassant M.
Powiązania:
https://bibliotekanauki.pl/articles/2216188.pdf
Data publikacji:
2022
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
difference equations
oscillation
non-monotone advanced arguments
Opis:
We study the oscillation of first-order linear difference equations with non-monotone deviating arguments. Iterative oscillation criteria are obtained which essentially improve, extend, and simplify some known conditions. These results will be applied to some numerical examples.
Źródło:
Opuscula Mathematica; 2022, 42, 3; 393-413
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The finite difference approximation for the Dirichlet problem with a non-uniform mesh on a boundary
Autorzy:
Morawiec, Grażyna
Powiązania:
https://bibliotekanauki.pl/articles/747719.pdf
Data publikacji:
1987
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
Derivation of finite difference approximations
Error bounds
Opis:
.
The author describes a construction of the positive difference scheme, which is the approximation of the Dirichlet problem for an elliptic second order equation with mixed derivatives in an arbitrary region in R2. The a priori estimation for the approximate solution is proved and the estimation of the rate of convergence in maximum norm is established.
Źródło:
Mathematica Applicanda; 1987, 16, 30
1730-2668
2299-4009
Pojawia się w:
Mathematica Applicanda
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bez kultury różnic nie ma demokracji
There Can Be No Democracy without a Culture of Difference
Autorzy:
Irigaray, Luce
Szopa, Katarzyna
Lebek, Karolina
Powiązania:
https://bibliotekanauki.pl/articles/534757.pdf
Data publikacji:
2019
Wydawca:
Wydawnictwo Uniwersytetu Śląskiego
Tematy:
democracy
individuation
individualization
sexuate difference
Luce Irigaray
Opis:
The text aims at outlining a new concept of democracy that is based on respecting differences, starting with sexuate difference which – according to Luce Irigaray – makes up a foundation for human individuation. Drawing upon philosophical and political democracy models originating in ancient Greece, Irigaray unmasks their exclusion-based character, proving that they are incapable of facilitating a culture filled with respect for differences amongst citizens regardless of their sex/gender. Luce Irigaray proposes that a new democratic model is required, the one that would include democracy’s most profound facet, namely – human subjectivity.
Źródło:
Śląskie Studia Polonistyczne; 2019, 13, 1; 21-34
2084-0772
2353-0928
Pojawia się w:
Śląskie Studia Polonistyczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Constant-sign solutions for a nonlinear Neumann problem involving the discrete p-Laplacian
Autorzy:
Candito, P.
D'Agui, G.
Powiązania:
https://bibliotekanauki.pl/articles/255253.pdf
Data publikacji:
2014
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
constant-sign solution
difference equations
Neumann problem
Opis:
In this paper, we investigate the existence of constant-sign solutions for a nonlinear Neumann boundary value problem involving the discrete p-Laplacian. Our approach is based on an abstract local minimum theorem and truncation techniques.
Źródło:
Opuscula Mathematica; 2014, 34, 4; 683-690
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Asymptotic properties of nonoscillatory solutions of higher order neutral difference equations
Autorzy:
Migda, M.
Powiązania:
https://bibliotekanauki.pl/articles/255688.pdf
Data publikacji:
2006
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
neutral difference equation
asymptotic behavior
nonoscillatory solution
Opis:
In this paper we study asymptotic behavior of solutions of a higher order neutral difference equation of the form Δm(xn + pnxn-τ) + f(n, xσ(n)) = hn. We present conditions under which all nonoscillatory solutions of the above equation have the property xn = cnm-1 + o(nm-1) for some c ∈ R.
Źródło:
Opuscula Mathematica; 2006, 26, 3; 507-514
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Seeking ‘the New Normal’? Troubled Spaces of Encountering Visible Differences in Warsaw
Autorzy:
Piekut, Aneta
Vieten, Ulrike M.
Valentine, Gill
Powiązania:
https://bibliotekanauki.pl/articles/1811376.pdf
Data publikacji:
2014-12-31
Wydawca:
Polskie Towarzystwo Socjologiczne
Tematy:
difference
visibility
normalisation
sexuality
Disability
Warsaw
Polska
Opis:
In times of globalisation and super-mobility, ideas of normality are in turmoil. In different societies in, across and beyond Europe, we face the challenge of undoing specific notions of normality and creating more inclusive societies with an open culture of learning to live with differences. The scope of the paper is to introduce some findings on encounters with difference and negotiations of social values in relation to a growing visibility of difference after 1989 in Poland, on the background of a critique of normality/normalisation and normalcy.On the basis of interviews conducted inWarsaw, we investigate how normality/normalisation discourses of visible homosexuality and physical disability are incorporated into individual self-reflections and justifications of prejudices (homophobia and disabilism). More specifically we argue that there are moments of ‚cultural transgressions’ present in everyday practices towards ‚visible’ sexual and (dis)ability difference.
Źródło:
Polish Sociological Review; 2014, 188, 4; 541-558
1231-1413
2657-4276
Pojawia się w:
Polish Sociological Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Managerial accounting in the implementation of deliverology using the example of Ukraine
Autorzy:
Buriachenko, Andrii Y.
Zhyber, Tetiana V.
Paientko, Tetiana
Powiązania:
https://bibliotekanauki.pl/articles/1356394.pdf
Data publikacji:
2020-09-19
Wydawca:
Uniwersytet Warszawski. Wydział Nauk Ekonomicznych
Tematy:
managerial accounting
new public management
local budgeting
performance indicators
deliverology
process-driven problem solving
Difference in Difference method
Opis:
The article is devoted towards the application of managerial accounting for deliverology development at the local government level in countries and comparing them to the stage of fiscal decentralisation implementation in Ukraine. The aim of the article is to show how the application of the managerial accounting approach in the public sector can contribute to the introduction of deliverology at the local level using Ukraine as an example. The methodology is based on the application of Difference in Difference method for the implementation of deliverology at the local government level. It has been proved that the use of multi-criteria decision-making methods in the analysis of the performance of budget programmes at the local level will contribute to the improvement of public services delivery. The main contribution of this study is to provide the basis for developing recommendations for the use of a single or uniform standard of electronic databases on regional development indicators and local budgets. This will help to ensure operational control over deviations of actual indicators from planned ones, as well as identify regions where local authorities are using resources inefficiently.
Źródło:
Central European Economic Journal; 2020, 7, 54; 72 - 83
2543-6821
Pojawia się w:
Central European Economic Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A finite difference method for nonlinear parabolic-elliptic systems of second-order partial differential equations
Autorzy:
Malec, M.
Sapa, L.
Powiązania:
https://bibliotekanauki.pl/articles/255499.pdf
Data publikacji:
2007
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
partial differential equation
parabolic-elliptic system
finite difference method
finite difference scheme
consistence
convergence
stability
error estimate
uniqueness
Opis:
This paper deals with a finite difference method for a wide class of weakly coupled nonlinear second-order partial differential systems with initial condition and weakly coupled nonlinear implicit boundary conditions. One part of each system is of the parabolic type (degenerated parabolic equations) and the other of the elliptic type (equations with a parameter) in a cube in R1+n. A suitable finite difference scheme is constructed. It is proved that the scheme has a unique solution, and the numerical method is consistent, convergent and stable. The error estimate is given. Moreover, by the method, the differential problem has at most one classical solution. The proof is based on the Banach fixed-point theorem, the maximum principle for difference functional systems of the parabolic type and some new difference inequalities. It is a new technique of studying the mixed-type systems. Examples of physical applications and numerical experiments are presented.
Źródło:
Opuscula Mathematica; 2007, 27, 2; 259-289
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Specyfika rodzicielstwa adopcyjnego w świetle teorii Davida H. Kirka
The specificity of the adoptive parenthood in the light of David H. Kirk’s theory
Autorzy:
Gutowska, Antonina
Powiązania:
https://bibliotekanauki.pl/articles/2128986.pdf
Data publikacji:
2019-03-27
Wydawca:
Katolicki Uniwersytet Lubelski Jana Pawła II. Towarzystwo Naukowe KUL
Tematy:
David H. Kirk
D. Brodzinsky
adoption
adoptive parenthood
acknowledgment-of-difference coping pattern
rejection-of-difference coping pattern
Opis:
Artykuł dotyczy funkcjonowania rodzin adopcyjnych, ze szczególnym uwzględnieniem różnic między rodzicielstwem adopcyjnym a rodzicielstwem naturalnym. Została w nim przedstawiona teoria relacji w rodzinie adopcyjnej sformułowana przez kanadyjskiego socjologa Davida H. Kirka. Kirk wyróżnia dwa odmienne sposoby radzenia sobie z trudnościami związanymi z adekwatnym zdefiniowaniem swojej roli przez rodziców adopcyjnych: uznawanie różnic między rodzicielstwem adopcyjnym a naturalnym (acknowledgment-of-difference coping pattern) lub zaprzeczanie tym różnicom (rejection-of-difference coping pattern). Uznawanie różnic wiąże się według Kirka z lepszym funkcjonowaniem rodziny adopcyjnej w aspekcie komunikacji między członkami rodziny i satysfakcji z adopcji. W drugiej części artykułu zostały opisane badania D. Brodzinsky’ego, K. Kaye’a i D. Grotevanta, zainspirowane teorią Kirka, oraz nowe interesujące interpretacje problemu odmienności rodzicielstwa adopcyjnego prezentowane przez tych autorów.
The article The specificity of the adoptive parenthood in the light of David H. Kirk’s theory concerns differences in functioning between adoptive and natural families as presented by a Canadian sociologist David H. Kirk. According to Kirk, there are two different coping patterns with difficulties related to self-identification as an adoptive parent: acknowledgmenet of difference between adoptive and natural parenthood or rejection of such difference. The families in which adoptive parents use the first strategy have better between-member communication and, as a result, they are much more satisfied with adoption than the families using the second strategy. In the second part of the article research inspired by Kirk’s theory is presented, especially that of D. Brodzinsky, as well as K. Kaye, and D. Grotevant.
Źródło:
Roczniki Psychologiczne; 2006, 9, 2; 7-27
1507-7888
Pojawia się w:
Roczniki Psychologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis and Applications of Composed Forms of Caputo Fractional Derivatives
Autorzy:
Błaszczyk, T.
Kotela, E.
Hall, M. R.
Leszczyński, J.
Powiązania:
https://bibliotekanauki.pl/articles/387231.pdf
Data publikacji:
2011
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
równanie różniczkowe
pochodne Caputo
difference equation
Caputo derivatives
Opis:
In this paper we consider two ordinary fractional differential equations with composition of the left and the right Caputo derivatives. Analytical solution of this type of equations is known for particular cases, having a complex form, and therefore is difficult in practical calculations. Here, we present two numerical schemes being dependent on a fractional order of equation. The results of numerical calculations are compared with analytical solutions and then we illustrate convergence of our schemes. Finally, we show an application of the considered equation.
Źródło:
Acta Mechanica et Automatica; 2011, 5, 2; 11-14
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Beyond Multiculturalism: Recognition Through the Relational Reason
Autorzy:
Donati, Pierpaolo
Powiązania:
https://bibliotekanauki.pl/articles/1929542.pdf
Data publikacji:
2009-06-30
Wydawca:
Polskie Towarzystwo Socjologiczne
Tematy:
multiculturalism
cultural difference
relational sociology
human reason
recognition
Opis:
Multiculturalism is a term spreading in the West during the 1960s to indicate respect, tolerance and defence of cultural minorities. The idea of multiculturalism has become a collective imaginary (“all different, all equals”). It has generated a political ideology supporting an inclusive citizenship towards “different” cultures. After being adopted as official policy in many Countries, multiculturalism has generated more negative than positive effects (fragmenting the society, separating the minorities and fostering cultural relativism). As a political doctrine, it seems harder and harder to be put into practice. At its place, today we talk of interculturality. But this expression too seems quite vague and uncertain. This essay discusses on the possible alternatives to multiculturalism, asking itself whether the way of interculturality can be a solution or not. The Author’s thesis is that the theory of interculturality has the advantage to stress the inter, namely what lies in between different cultures. But it does not possess yet the conceptual and effective means to understand and handle the problems of the public sphere, when the different cultures express cultural values radically conflictual between them. The troubles of interculturality result from two lacks: an insufficient reflexivity inside the single cultures, and the lack of a relational interface between the different cultures (between the carrier subjects). Modern western Reason created a societal structure (lib-lab) promoting neither the first nor the second one. In fact, it neutralizes them, because it faces the dilemmas of values inside the cultural diversities through criteria of ethical indifference. Such criteria set reflexivity to zero, preventing individuals to understand the deepest reasons of the vital experience of the others. Reason is emptied of its meaning and of its understanding capability. To go over the failures of multiculturalism and the fragilities of interculturality, a lay approach to the coexistence of cultures is required, being able to give strength back to Reason, through new semantics of the inter-human diversity. The Author suggests the development of the “relational reason,” beyond the forms already known of rationality. To make Reason relational might be the best way to imagine a new social order of society, being able to humanize the globalizing processes and the growing migrations. The after-modern society would be more or less human, depending on how it will be able to widen the human Reason, structuring it inside a new “relational unit” with the religious faith.
Źródło:
Polish Sociological Review; 2009, 166, 2; 147-178
1231-1413
2657-4276
Pojawia się w:
Polish Sociological Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Finite-difference solution of parabolic equation and numerical simulation for X-ray focusing
Autorzy:
Elsawy, M. H. R. A.
Leble, S.
Powiązania:
https://bibliotekanauki.pl/articles/1954440.pdf
Data publikacji:
2014
Wydawca:
Politechnika Gdańska
Tematy:
finite difference model
focusing X-rays
Runge-Kutta
Opis:
In this paper we apply the finite-difference method to solve a parabolic equation of a general problem of short wave diffraction in a conducting medium. It is based on the implicit Runge-Kutta method of the second order combined with the iterative procedure. We also present new numerical simulations for X-rays focusing using the mentioned approach. We consider CRLs with a parabolic profile with a radius of curvature up to 0.2 mm. The main goal of this work is to elaborate an X-ray calculator for a PC which would present new possibilities compared to conventional ones. The correspondent code is written in FORTRAN to obtain the focal distance and diffraction spot profiles. Simulations for two cases were performed, the first one with 33 Al lenses for X-ray energy 15 keV, the results showed that we needed to consider more than 50000 points in each direction which forced us to consider a one-dimensional simulation only. For the second case we performed a simulation for several lenses, up to 15 Al lenses to perform the 2-d simulation. We have good agreement with the experimental data for the focal distance, and for the intensity at the focal plane while, for the spot size, we have smaller FWHM for the Gaussian beam at the detector than in the experimental data. We believe that the FWHM we have is smaller as our lenses are ideal without any defects.
Źródło:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2014, 18, 1; 101-111
1428-6394
Pojawia się w:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Parallel and distributed seismic wave-field modeling
Autorzy:
Danek, T.
Franczyk, A.
Powiązania:
https://bibliotekanauki.pl/articles/1964208.pdf
Data publikacji:
2004
Wydawca:
Politechnika Gdańska
Tematy:
wave field modeling
PC clusters
finite difference method
Opis:
Elastic or acoustic wave-field modeling is an important part of seismic exploration. It can be used during the planning, processing and interpretation stages of seismic investigation. First attempts of using wave-field modeling were undertaken in the seventies by Alford, Kelly and others (Alford R M, Kelly K R and Boore D M 1974 Geophysics 39 (6) 834; Kelly K R, Ward R W, Treitel S and Alford R M 1976 Geophysics 41 2). These attempts were restricted by the limitations of computers at that time. Even now, computation for models of the standard exploration scale could last many hours, and many days in case of longer recording times. One of the best methods to overcome this disadvantage is parallelization of computations (Niccanna C and Bean C J 1997 Computers and Geosciences 23 (7) 771; Villareal A and Scales J A 1997 Computers in Physics 11 (4) 388). This paper presents the results of distributed parallelization of elastic and acoustic wave-field modeling based on a Parallel Virtual Machine.
Źródło:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2004, 8, 4; 573-581
1428-6394
Pojawia się w:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of barrier height distributions over the gate area of Al-SiO2-Si structures
Autorzy:
Piskorski, K.
Przewłocki, H. M.
Powiązania:
https://bibliotekanauki.pl/articles/308661.pdf
Data publikacji:
2007
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
barrier height
effective contact potential difference
MOS system
Opis:
Distributions of the gate-dielectric EBG(x, y) and semiconductor-dielectric EBS(x, y) barrier height values have been determined using the photoelectric measurement method. Modified Powell-Berglund method was used to measure barrier height values. Modification of this method consisted in using a focused UV light beam of a small diameter d =0.3 mm. It was found that the EBG(x, y) distribution has a characteristic dome-like shape which corresponds with the independently determined shape of the effective contact potential difference fMS(x, y) distribution. On the other hand, the EBS(x, y) distribution is of a random character. It is shown that the EBG(x, y) distribution determines the shape of the fMS(x, y) distribution. The model of the EBG and EBS barrier height distributions over the gate area has been proposed.
Źródło:
Journal of Telecommunications and Information Technology; 2007, 3; 49-54
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The role of residence near hazardous waste sites containing benzene in the development of hematologic cancers in upstate New York
Autorzy:
Boberg, Erik
Lessner, Lawrence
Carpenter, David O.
Powiązania:
https://bibliotekanauki.pl/articles/2185371.pdf
Data publikacji:
2011-12-01
Wydawca:
Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
Tematy:
environmental exposure
lymphoma
Leukemia
ecological study
ethnic difference
Opis:
Objectives: Epidemiologic studies suggest an association between environmental exposure to benzene and hematologic cancers, but the relationship is not fi rmly established. The aim of this study was to assess the potential association between residence near hazardous waste sites containing benzene and hospitalization discharge rates for persons having hematologic cancers. Materials and Methods: We determined the number of hospital discharges of people with hematologic cancers in New York State except for New York City for the years 1993 to 2008. Descriptive statistics and negative binomial regression models were used to compare the rates of hospitalization of residents in zip codes containing hazardous waste sites containing benzene to the rates of discharges from residents in zip codes without waste sites. Results: When adjusting for potential confounders we found a 15% increase in the rate of hospitalization for chronic lymphatic leukemia (CLL) [rate ratio (RR): 1.15; 95% confi dence interval (CI): 1.00–1.33], a 22% increase in the rate of discharges for total leukemia (RR: 1.22; 95% CI: 1.04–1.43) and a 17% increase in the rate of discharges for total lymphoma (RR: 1.17; 95% CI: 1.02–1.35) in the benzene exposed sites. We found greater effects of exposure in African Americans compared to Caucasians, females compared to males and people with higher socioeconomic status (SES) compared to those with lower SES for several of the diseases studied. Conclusions: After controlling for major confounders we found statistically signifi cant increases in discharge rates for several hematologic cancers in persons residing in zip codes containing benzene waste sites. These results provide additional support for a relationship between environmental exposure to benzene and risk of hematologic cancers.
Źródło:
International Journal of Occupational Medicine and Environmental Health; 2011, 24, 4; 327-338
1232-1087
1896-494X
Pojawia się w:
International Journal of Occupational Medicine and Environmental Health
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On some difference-delay equations arising in a problem of capital deposits
Autorzy:
Kwapisz, Marian
Bartoszewski, Zbigniew
Powiązania:
https://bibliotekanauki.pl/articles/748048.pdf
Data publikacji:
1996
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
Portfolio theory and financial economics
Difference equations, additive
Opis:
.
Introduction. We consider a real life problem: a. person has made a deposit of D0 dollars in bank B, which calculates interest on this deposit at in=100•in% after each n+l-st quarter and the interest is compounded at the end of each consecutive year since the deposit date, which means that the interest is capitalised yearly. In the case discussed the basic time unit is a quarter but the conversion period - the time interval at the end of which the interest is compounded - is four quarters (for the terminology see [3]). We ask the following question: what is the balance of the person after n time units, i.e. after n quarters? Such a question is important to people planning various sorts of investments or making arrangements with life insurance institutions. We cannot find an answer to this question in available literature. In particular, it is not to be found in recent books devoted to the subject [see 1-6]. We want to find general formulas that would allow us to express this balance by the other given quantities. Such formulas allow us to solve inverse problems consisting in finding the initial deposit Z)q , the interest rate i or the length of the period after which a capital reaches a given level. In this paper we give explicit formulas for the above-mentioned balance. They can be applied to the problems with any number of payments. At the end of this paper we give some examples of application of these formulas to solving the mentioned inverse problems. The obtained formulas make solving such problems easy. A straightforward application of backward recurrence formulas derived from formula (2), although possible, is quite troublesome.ct
Źródło:
Mathematica Applicanda; 1996, 25, 39
1730-2668
2299-4009
Pojawia się w:
Mathematica Applicanda
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effective difference schemes for the heat equation in arbitrary regions
Autorzy:
Dryja, Maksymilian
Powiązania:
https://bibliotekanauki.pl/articles/748525.pdf
Data publikacji:
1982
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
Stability and convergence of difference methods,Error bounds
Opis:
.
In this paper the author considers the problem of the heat equation ∂u/∂t−(∂2u/∂x21+∂2u/∂x22)=f(x,t) for x∈Ω and t∈(0,T], u(x,0)=φ(x) for x∈Ω, u(x,t)=0 for x∈∂Ω and t∈[0,T]. He constructs a Crank-Nicolson and an alternating direction difference scheme on a regular mesh with steps hi (i=1,2) and τ. Linear interpolation is used for the approximation of the boundary condition. Besides stability of both schemes error estimates are derived under the condition that the derivatives ∂5u/∂t∂x4i and ∂3u/∂t3 are bounded. These estimates are: maxn∥un−yn∥A≤M(τ2+h3/2)andmaxn∥un−yn∥h≤M(τ2+h2+τh1/2+h5/2/τ). Here h=max(h1,h2), un=u(⋅,nτ), yn is the approximate value of un, ∥u∥2h=(u,u)h, (u,v)h=h1h2∑x∈Ωhu(x)v(x) (Ωh is the set of all mesh points lying in Ω), and ∥u∥2A=(u,Au)h where A is the discrete Laplace operator.
Źródło:
Mathematica Applicanda; 1982, 10, 19
1730-2668
2299-4009
Pojawia się w:
Mathematica Applicanda
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
W jaki sposób różnica płciowa może ocalić nasz świat
How Sexuate Difference Can Rescue Our World
Autorzy:
Irigaray, Luce
Szopa, Katarzyna
Lebek, Karolna
Powiązania:
https://bibliotekanauki.pl/articles/534724.pdf
Data publikacji:
2019
Wydawca:
Wydawnictwo Uniwersytetu Śląskiego
Tematy:
sexuate difference
desire
relational energy
sexuality
Luce Irigaray
Opis:
In this text Luce Irigaray enquires into questions pertaining to knowledge production, contemporarily derivative upon capitalist system of production and the ideology promoting sexual/gender neutrality, along with corporeal/bodily, class-related, and cultural non-differentiation. According to the female philosopher, the said system contributes to exploitation of not only human work, but most of all energy that fuels our ability to bond and be together. Therefore, going back to the most fundamental structure of human subjectivity determined by the sexuate difference, may prove to be not only a strategic resistance device meted out against capitalist organisation of work, but also a path leading to another world, where a coexistence acknowledging mutual/reciprocal difference may appear possible.
Źródło:
Śląskie Studia Polonistyczne; 2019, 13, 1; 81-90
2084-0772
2353-0928
Pojawia się w:
Śląskie Studia Polonistyczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Differential interference in a polymer waveguide
Autorzy:
Gut, K.
Powiązania:
https://bibliotekanauki.pl/articles/200139.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
planar waveguides
interferometers
integrated optical sensors
difference interferometer
Opis:
The paper presents the results of investigations concerning the measurement of the refractive index and the thickness of planar waveguide structures, obtained by photo polymerization of the polymer SU8. In the paper the mode sensitivity has been calculated as a function of the thickness in a single-mode structure. The thickness of the layer has been determined in the case when the interferometer is most sensitive to changes of the refractive index.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2011, 59, 4; 395-399
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
(Gesichts)züge, Notation and Graphicness of Signs. Deconstruction in Wittgenstein’s Tractatus
Autorzy:
Piekarski, Michał
Powiązania:
https://bibliotekanauki.pl/articles/22768262.pdf
Data publikacji:
2022
Wydawca:
Uniwersytet Kardynała Stefana Wyszyńskiego w Warszawie
Tematy:
Ludwig Wittgenstein
deconstruction
logic
difference
writing
notation
sign
Opis:
In this paper, I attempt to address some of the themes of Ludwig Wittgenstein’s Tractatus logico-philosophicus with the aim of their deconstructionist interpretation. My analysis is based on David Gunkel’s book Deconstruction (MIT Press 2021). Based on some of its findings, I show how the Tractatus allows deconstruction and its practice to be thought. I show that the graphic structure of signs is crucial for the young Wittgenstein’s analysis and that it justifies the metaphysical findings in favor of which he argues.
Źródło:
Studia Philosophiae Christianae; 2022, 58, 2; 145-160
0585-5470
Pojawia się w:
Studia Philosophiae Christianae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Oscillation conditions for difference equations with several variable delays
Autorzy:
El-Matary, Bassant M.
El-Morshedy, Hassan A.
Benekas, Vasileios
Stavroulakis, Ioannis P.
Powiązania:
https://bibliotekanauki.pl/articles/29519474.pdf
Data publikacji:
2023
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
oscillation
difference equations
non-monotone delays
first order
Opis:
A technique is developed to establish a new oscillation criterion for a first-order linear difference equation with several delays and non-negative coefficients. Our result improves recent oscillation criteria and covers the cases of monotone and non-monotone delays. Moreover, the paper is concluded with an illustrative example to show the applicability and strength of our result.
Źródło:
Opuscula Mathematica; 2023, 43, 6; 789-801
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Repetition as a Path to Authentic Existence in Kierkegaard’s Work
Autorzy:
Pavlikova, Martina
Tavilla, Igor
Powiązania:
https://bibliotekanauki.pl/articles/18761123.pdf
Data publikacji:
2023
Wydawca:
Fundacja Pro Scientia Publica
Tematy:
repetition
difference
authentic and unauthentic existence
choice
Kierkegaard
Opis:
Thesis. The aim of the paper is to interpret Kierkegaard's concept of repetition as a way of creating and experiencing authentic existence in an environment that is set up to repeat this same, inauthentic content of consciousness. Concept. Repetition is associated with determinism and represents social stagnation. Repetition creates the conditions for an inauthentic existence. The article offers an interpretation of Kierkegaard's concept of repetition, which is the repetition of another and produces authentic existence. Results and conclusions. Repetition automatically produces of the same. The repetition of one's choice of oneself is a process of creating spirit and individuality, which is a fundamental principle of authentic existence. Creating an authentic personality is one of the ways to solve the current crisis in society, which is associated with an inauthentic experience of existence, abdication of responsibility and repetition of lies. Cognitive value. The postmodern society associated with the use of the media is not the cause of social disorientation. It is a means that an individual uses to repeat the same. The social environment and magic themselves are not negative, the negative is the inauthentic attitude of a person to them.
Źródło:
Journal of Education Culture and Society; 2023, 14, 2; 105-115
2081-1640
Pojawia się w:
Journal of Education Culture and Society
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Gold nano-elliptic arrays used in plasmonic waveguides in near infrared spectrum
Autorzy:
Nurmohammadi, T.
Yadipour, R.
Abbasian, K.
Powiązania:
https://bibliotekanauki.pl/articles/174404.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
loss coefficient
group velocity
finite-difference time-domain
Opis:
In this paper, we investigated plasmonic waveguides in near infrared spectrum, especially at original (λ = 1310 nm) and also communication bands (λ = 1550 nm) using gold nano-elliptic rings. It is possible to shift localized surface plasmon resonance, by appropriate geometrical properties, to the desired wavelength. Three-dimensional simulations utilizing the finite-difference time-domain algorithm are used to determine the set of geometrical parameters of gold nano-elliptic rings for exciting localized surface plasmon resonance at 1310 and 1550 nm. Employing different configurations of gold nano-elliptic rings chains, waveguides are designed, with–3 dB transmission loss coefficients and group velocities calculations for different modes. In comparison with circular nanorings, elliptic rings showed better characteristics, such as high electric field enhancements and low loss transmission coefficients.
Źródło:
Optica Applicata; 2018, 48, 3; 489-497
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison of the barrier height measurements by the Powell method with the phi MS measurement results
Autorzy:
Piskorski, K.
Kudła, A.
Rzodkiewicz, W.
Przewłocki, H. M.
Powiązania:
https://bibliotekanauki.pl/articles/308846.pdf
Data publikacji:
2005
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
barrier height
effective contact potential difference
MOS system
Opis:
In this work, we have compared the barrier height measurements carried out using the Powell method with the photoelectric effective contact potential difference (phi MS) measurement results. The photoelectric measurements were performed on the samples that were previously applied in the investigation of the influence of stress on the duration of annealing in nitrogen. This paper shows that the results of barrier height measurement using the Powell method differ significantly from the phi MS measurement results.
Źródło:
Journal of Telecommunications and Information Technology; 2005, 1; 120-123
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Variable-, Fractional-Orders Closed-Loop Systems Description
Autorzy:
Ostalczyk, P.
Powiązania:
https://bibliotekanauki.pl/articles/387312.pdf
Data publikacji:
2011
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
równanie różniczkowe
układ sterowania
difference equation
control system
Opis:
In this paper we explore the linear difference equations with fractional orders, which are functions of time. A description of closed-loop dynamical systems described by such equations is proposed. In a numerical example a simple control strategy based on time-varying fractional orders is presented.
Źródło:
Acta Mechanica et Automatica; 2011, 5, 2; 79-85
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Approximation of Fractional Diffusion-Wave Equation
Autorzy:
Mitkowski, W.
Powiązania:
https://bibliotekanauki.pl/articles/387317.pdf
Data publikacji:
2011
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
aproksymacja
równanie różniczkowe
rozwiązanie
difference equation
solution
aproximation
Opis:
In this paper we consider the solution of the fractional differential equations. In particular, we consider the numerical solution of the fractional one dimensional diffusion-wave equation. Some improvements of computational algorithms are suggested. The considerations have been illustrated by examples.
Źródło:
Acta Mechanica et Automatica; 2011, 5, 2; 65-68
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Implementacja metody maximum difference scaling w pakiecie MaxDiff programu R
Implementation of maximum difference scaling in MaxDiff R package
Autorzy:
Bartłomowicz, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/425002.pdf
Data publikacji:
2014
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
consumers’ preferences
Maximum Difference Scaling
MaxDiff
R program
Opis:
Measurement of consumer preferences is one of the most important elements of marketing research. In the measurement of consumers’ preferences Maximum Difference Scaling method can be used, which was implemented in the module MaxDiff (Best-Worst Scaling) of Sawtooth Software. The aim of the article is to present the author’s MaxDiff package for the R program, which is one of the most important no-commercial programs offered under the GNU GPL licence with free access to the source code. The article presents some functions of the MaxDiff R package with the example of application of consumers’ preferences in empirical analysis.
Źródło:
Econometrics. Ekonometria. Advances in Applied Data Analytics; 2014, 4(46); 189-198
1507-3866
Pojawia się w:
Econometrics. Ekonometria. Advances in Applied Data Analytics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The numerical solution of functional differential equations, a survey
Autorzy:
Jackiewicz, Z.
Kwapisz, M.
Powiązania:
https://bibliotekanauki.pl/articles/748493.pdf
Data publikacji:
1991
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
Difference and functional equations, recurrence relations
Neutral equations
Opis:
.
Significant progress has been made in the last few years in the numerical solution of functional differential equations. It is the purpose of this paper to review the results in this area. Special attention is given to implementation of one-step methods and predictor corrector methods for functional differential equations including equations of neutral type and to the stability theory of numerical methods for these equations.
Źródło:
Mathematica Applicanda; 1991, 19, 33
1730-2668
2299-4009
Pojawia się w:
Mathematica Applicanda
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Finite Difference Analysis of Surface Wave Scattering by Underwater Rectangular Obstacles
Autorzy:
Szmidt, K.
Powiązania:
https://bibliotekanauki.pl/articles/241339.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Instytut Budownictwa Wodnego PAN
Tematy:
water wave
scattering of waves
finite difference method
Opis:
This paper deals with the problem of the scattering of surface water waves by underwater obstacles. The main goal of the investigations is to estimate the efficiency of such structures in protecting sea shelf zones from open sea waves. A useful measure of the protection is the ratio of the square of the amplitude of the transmitted wave to the square of the amplitude of the arriving wave. The problem is formulated in terms of the finite difference method. It is shown that the discrete approach to the problem leads to eigenvalue problems for two matrices resulting from the discrete description. As compared to analytical formulation, the discrete method may be convenient in application to unsteady problems and obstacles of complicated geometry.
Źródło:
Archives of Hydro-Engineering and Environmental Mechanics; 2010, 57, 3-4; 179-198
1231-3726
Pojawia się w:
Archives of Hydro-Engineering and Environmental Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A constructive method for solving stabilization problems
Autorzy:
Azhmyakov, Vadim
Powiązania:
https://bibliotekanauki.pl/articles/729257.pdf
Data publikacji:
2000
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
differential inclusions
difference inclusions
Lyapunov function
asymptotic stability
Opis:
The problem of asymptotic stabilization for a class of differential inclusions is considered. The problem of choosing the Lyapunov functions from the parametric class of polynomials for differential inclusions is reduced to that of searching saddle points of a suitable function. A numerical algorithm is used for this purpose. All the results thus obtained can be extended to cover the discrete systems described by difference inclusions.
Źródło:
Discussiones Mathematicae, Differential Inclusions, Control and Optimization; 2000, 20, 1; 51-62
1509-9407
Pojawia się w:
Discussiones Mathematicae, Differential Inclusions, Control and Optimization
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Normalized finite fractional differences: Computational and accuracy breakthroughs
Autorzy:
Stanisławski, R.
Latawiec, K. J.
Powiązania:
https://bibliotekanauki.pl/articles/331334.pdf
Data publikacji:
2012
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
różnica ułamkowa
różnica Grünwalda-Letnikowa
analiza stabilności
system adaptacyjny
fractional difference
Grünwald-Letnikov difference
stability analysis
recursive computation
adaptive systems
Opis:
This paper presents a series of new results in finite and infinite-memory modeling of discrete-time fractional differences. The introduced normalized finite fractional difference is shown to properly approximate its fractional difference original, in particular in terms of the steady-state properties. A stability analysis is also presented and a recursive computation algorithm is offered for finite fractional differences. A thorough analysis of computational and accuracy aspects is culminated with the introduction of a perfect finite fractional difference and, in particular, a powerful adaptive finite fractional difference, whose excellent performance is illustrated in simulation examples.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2012, 22, 4; 907-919
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Implicit difference methods for infinite systems of hyperbolic functional differential equations
Autorzy:
Szafrańska, Anna
Powiązania:
https://bibliotekanauki.pl/articles/745990.pdf
Data publikacji:
2010
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
initial boundary value problems
difference functional equations
difference methods
stability and convergence
interpolating operators
nonlinear estimates of the Perron type
Opis:
The paper deal with classical solutions of initial boundary value problems for infinite systems of nonlinear differential functional equations. Two types of difference schemes are constructed. First we show that solutions of our differential problem can be approximated by solutions of infinite difference functional schemes. In the second part of the paper we proof that solutions of finite difference systems approximate the solutions of aur differential problem. We give a complete convergence analysis for both types of difference methods. We adopt nonlinear estimates of the Perron type for given functions with respect to the functional variable. The proof of the stability is based on the comparison technique. Numerical examples are presented.
Źródło:
Commentationes Mathematicae; 2010, 50, 1
0373-8299
Pojawia się w:
Commentationes Mathematicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Jackson and Hahn difference models as discrete Bittner operational calculus representations
Różnicowe modele Jacksona i Hahna jako dyskretne reprezentacje rachunku operatorów Bittnera
Autorzy:
Wysocki, H.
Powiązania:
https://bibliotekanauki.pl/articles/222832.pdf
Data publikacji:
2017
Wydawca:
Akademia Marynarki Wojennej. Wydział Dowodzenia i Operacji Morskich
Tematy:
operational calculus
derivative
integrals
limit conditions
Jackson difference
Hahn difference
rachunek operatorów
pochodna
pierwotne
warunki graniczne
różnica Jacksona
różnica Hahna
Opis:
In the paper, there have been constructed discrete models of the non-classical Bittner operational calculus that are related to the notions of Jackson and Hahn derivatives, both known from the quantum calculus. To achieve it, we have used the Bittner operational calculus representation for the forward difference.
W artykule skonstruowano dyskretne modele nieklasycznego rachunku operatorów Bittnera związane z pojęciami pochodnej Jacksona i pochodnej Hahna znanymi z rachunku kwantowego. Do tego celu wykorzystano reprezentację rachunku operatorów Bittnera dla różnicy progresywnej.
Źródło:
Zeszyty Naukowe Akademii Marynarki Wojennej; 2017, R. 58 nr 4 (211), 4 (211); 61-70
0860-889X
Pojawia się w:
Zeszyty Naukowe Akademii Marynarki Wojennej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Existence results for q-difference inclusions with three-point boundary conditions involving different numbers of q
Autorzy:
Ntouyas, Sotiris
Sitthiwirattham, Thanin
Tariboon, Jessada
Powiązania:
https://bibliotekanauki.pl/articles/729550.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
q-difference inclusions
nonlocal boundary conditions
fixed point theorems
Opis:
In this paper, we study a new class of three-point boundary value problems of nonlinear second-order q-difference inclusions. Our problems contain different numbers of q in derivatives and integrals. By using fixed point theorems, some new existence results are obtained in the cases when the right-hand side has convex as well as noncovex values.
Źródło:
Discussiones Mathematicae, Differential Inclusions, Control and Optimization; 2014, 34, 1; 41-59
1509-9407
Pojawia się w:
Discussiones Mathematicae, Differential Inclusions, Control and Optimization
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Not so individual after all: An ecological approach to age as an individual difference variable in a classroom
Autorzy:
Pfenninger, Simone E.
Powiązania:
https://bibliotekanauki.pl/articles/780659.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
age factor
context
environmental variables
young learners
individual difference
Opis:
The main goal of this paper is to analyze how the age factor behaves as an alleged individual difference (ID) variable in SLA by focusing on the influence that the learning context exerts on the dynamics of age of onset (AO). The results of several long-term classroom studies on age effects will be presented, in which I have empirically analyzed whether AO works similarly across settings and learners or whether it is influenced by characteristics of the setting and the learner—and if so, whether there are contextual variables that can help us understand why thoseoutcomes are different. Results of multilevel analyses indicate that macro-contextual factors (i.e., the wider school context) turn out to have a mediating effect on the relation between AO and L2 proficiency increase, exerting both positive and negative influences and thus suggesting that AO effects are malleable, which is what one would expect if we are dealing with an ID variable. In contrast, no such phenomenon can be observed in relation to lower contextual levels; learners within classes do not vary with regard to how sensitive they are to AO. Since the broader social environment in which learning takes place seems to be more influential than the cognitive state assumed to be a characteristic of the individual, I suggest that an ID model that assumes that age is a “fixed factor” (Ellis, 1994, p. 35) is not entirely satisfactory.
Źródło:
Studies in Second Language Learning and Teaching; 2017, 7, 1; 19-46
2083-5205
2084-1965
Pojawia się w:
Studies in Second Language Learning and Teaching
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A fast-reversed DC voltage/current source to measure
Autorzy:
Kampik, M.
Tokarski, J.
Barwinek, W.
Kurczalski, M.
Powiązania:
https://bibliotekanauki.pl/articles/114134.pdf
Data publikacji:
2016
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
AC voltage standards
thermal converters
AC-DC transfer difference
Opis:
The paper presents a fast-reversed DC voltage/current source (FRDC) used for determination of the frequency-independent AC-DC transfer difference of thermal voltage converters. It contains also results of experiments and measurements.
Źródło:
Measurement Automation Monitoring; 2016, 62, 1; 2-6
2450-2855
Pojawia się w:
Measurement Automation Monitoring
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Solution of infinite slab static problem using the finite strip method by difference equations
Zastosowanie równań różnicowych w rozwiązaniu problemu statyki nieograniczonej tarczy metodą pasm skończonych
Autorzy:
Pawlak, Z.
Rakowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/279420.pdf
Data publikacji:
2009
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
finite element method
finite strips
difference equations
plane slab
Opis:
An analytical approach to the solution of an infinite slab static problem using the finite strip method is presented. The structure simply supported on its opposite edges is treated as a discrete one. A regular mesh of identical finite strips approximates the continuous structure. This regular slab discretization enables one to derive a fundamental solution for the two-dimensional discrete strip structure in an analytical, closed form. Equilibrium conditions are derived from the finite element method formulation. The set of the infinite number of equilibrium conditions is replaced by one equivalent difference equation. The solution to this equation is the fundamental function, i.e. Green's function for considered slab strip.
W pracy zaprezentowano analityczne rozwiązanie problemu statyki nieograniczonej tarczy metodą pasm skończonych. Tarcza swobodnie podparta na przeciwległych krawędziach jest rozwiązywana jako układ dyskretny. Ciągła struktura jest aproksymowana regularną siatką składającą się z identycznych pasm skończonych. Regularny podział pozwala na wyprowadzenie funkcji fundamentalnych dla dwuwymiarowego układu dyskretnego w analitycznej, zamkniętej formie. Warunki równowagi zostały wyprowadzone zgodnie ze sformułowaniem metody elementów skończonych. Układ równań równowagi składający się z nieskończonej liczby równań został zastąpiony jednym, równoważnym równaniem różnicowym. Rozwiązanie tego równania jest funkcją fundamentalną dla rozpatrywanej tarczy.
Źródło:
Journal of Theoretical and Applied Mechanics; 2009, 47, 3; 629-643
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reconstruction of potential and boundary conditions for second order difference equations
Autorzy:
Currie, Sonja
Love, Anne
Powiązania:
https://bibliotekanauki.pl/articles/962820.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
Difference equations
inverse problem
boundary value problems
potential
eigenvalues
Opis:
Assume the eigenvalues and the weights are given for a difference boundary value problem and that the form of the boundary conditions at the endpoints is known. In particular, it is known whether the endpoints are fixed (i.e. Dirichlet or non-Dirichlet boundary conditions) or whether the endpoints are free to move (i.e. boundary conditions with affine dependence on the eigenparameter). This work illustrates how the potential as well as the exact boundary conditions can be uniquely reconstructed. The procedure is inductive on the number of unit intervals. This paper follows along the lines of S. Currie and A. Love, Inverse problems for difference equations with quadratic eigenparameter dependent boundary conditions, \emph{Quaestiones Mathematicae}, 40 (2017), no. 7, 861−877. Since the inverse problem considered in this paper contains more unknowns than the inverse problem considered in the above reference, an additional spectrum is required more often than was the case in the unique reconstruction of the potential alone.
Źródło:
Commentationes Mathematicae; 2018, 58, 1-2; 1-9
0373-8299
Pojawia się w:
Commentationes Mathematicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Algebraic Separation and Shadowing of Arbitrary Sets
Autorzy:
Grzybowski, Jerzy
Pallaschke, Diethard
Urbański, Ryszard
Powiązania:
https://bibliotekanauki.pl/articles/1912878.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
separation
geometry of convex sets
Demyanov difference
data-classification
Opis:
In this paper we consider a generalization of the separation technique proposed in [10,4,7] for the separation of finitely many compact convex sets \(A_i,~i \in I \) by another compact convex set \(S\) in a locally convex vector space to arbitrary sets in real vector spaces. Then we investigate the notation of shadowing set which is a generalization of the notion of separating set and construct separating sets by means of a generalized Demyanov-difference in locally convex vector spaces.
Źródło:
Commentationes Mathematicae; 2013, 53, 2; 155-164
0373-8299
Pojawia się w:
Commentationes Mathematicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Photoelectric measurements of the local values of the effective contact potential difference in the MOS structure
Autorzy:
Kudła, A.
Przewłocki, H.
Brzezińska, D.
Borowicz, L.
Powiązania:
https://bibliotekanauki.pl/articles/308842.pdf
Data publikacji:
2005
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
MIS structure
photoelectrical methods
internal photoemission
contact potential difference
Opis:
We have shown that using focused UV laser beam in photoelectric methods it is possible to measure local phi MS values over the gate area of a single MOS structure. The phi MS distribution is such that its values are highest far away from the gate edges regions, lower in the vicinity of gate edges and still lower in the vicinity of gate corners. Examples of measurement results and description of the measurement system are presented. The dependence of the phi MS value on the exposure time and the power density of UV light is discussed.
Źródło:
Journal of Telecommunications and Information Technology; 2005, 1; 112-114
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Calculation of Stress-Strain State Elastic Plate with Notch of an Arbitrary Smooth Contour
Autorzy:
Kuz, I. S.
Kuz, O. N.
Powiązania:
https://bibliotekanauki.pl/articles/108770.pdf
Data publikacji:
2013
Wydawca:
Społeczna Akademia Nauk w Łodzi
Tematy:
semi-plane
plate
notch
variation-difference method
stress field
Opis:
The paper contains comparing calculations of the stress fields in an elastic plate with notch along the arc of a circle, ellipse or parabola obtained by analyticnumerical method based on complex Kolosov-Mushelishvili potentials and by numerical variation-difference method. These fields differ by no more than 2%, which, in particular, indicates the reliability of such numerical implementation.
Źródło:
Journal of Applied Computer Science Methods; 2013, 5 No. 1; 29-46
1689-9636
Pojawia się w:
Journal of Applied Computer Science Methods
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ciała osobliwe w przestrzeni freak/talk show
Freak bodies (with)in a freak/talk show
Autorzy:
Brzozowska-Brywczyńska, Maja
Powiązania:
https://bibliotekanauki.pl/articles/1373717.pdf
Data publikacji:
2012
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
freak
freak show
corporeal difference
representation of otherness
disability
Opis:
The corporeal difference is the most fundamental in experiencing the otherness of the other. Confrontations with freak bodies in public spaces often leave us helpless, yet they call for strategies that would resolve the problem of their otherness. Modernity has formulated two basic rules governing the presence of heterotopic body: its medicalization and normativization. It would then seem that there is now a void where once was a freak show. Yet, the traces of freak shows’ spectacular logic can be traced in the television talk show formula. The comparison of these two is not aimed only at pointing at some superficial similarities, but also to more in-depth analogies concerning the logic of representation of corporeal otherness and lastly – to the metanarrative behind the show that justifies its obscenity. The paper concludes with a question of the possibility of adapting, yet, another strategy of making freak bodies publicly visible: freak show-based performances of disabled artists.
Źródło:
Przegląd Socjologii Jakościowej; 2012, 8, 2; 229-259
1733-8069
Pojawia się w:
Przegląd Socjologii Jakościowej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Loads exerted by floating ice on a cylindrical structure
Autorzy:
Staroszczyk, R.
Powiązania:
https://bibliotekanauki.pl/articles/241206.pdf
Data publikacji:
2005
Wydawca:
Polska Akademia Nauk. Instytut Budownictwa Wodnego PAN
Tematy:
floating ice
plate
rheology
creep buckling
finite difference method
Opis:
The paper is concerned with the problem of interaction between a coherent floating ice cover and a fixed, rigid, vertically-walled circular cylinder. The ice cover, of horizontal dimensions considerably larger than the size of the structure, is assumed to be driven against the structure by wind and water current drag stresses. The floating ice cover is modelled as a plate that is subject to the action of horizontal forces and transverse bending due to the reaction of underlying water. During an interaction event, of a quasi-static character, the ice is modelled as a creeping material the behaviour of which is described by a viscous flow law with two, bulk and shear, viscosities. The viscosities change dramatically in their magnitudes during a transition from converging to diverging deformation of the material to reflect the fact that floating ice offers much less resistance to tensile rather than compressive stresses. By numerical simulations carried out by a finite difference method, the influence of the ice rheological parameters on the distribution of contact stresses at the ice - structure interface is investigated. Two types of boundary conditions at the interface, free-slip and no-slip, are considered, and their effects on the loads sustained by the structure are compared. In addition, creep buckling of the ice sheet near the structure is analysed to determine the critical time at which ice starts to fail due to exceeding its flexural strength at given loading conditions.
Źródło:
Archives of Hydro-Engineering and Environmental Mechanics; 2005, 52, 1; 39-58
1231-3726
Pojawia się w:
Archives of Hydro-Engineering and Environmental Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Chinese University Students’ Beliefs about English Language Learning and Self-efficacy
Autorzy:
Liu, Meihua
Powiązania:
https://bibliotekanauki.pl/articles/22446701.pdf
Data publikacji:
2023
Wydawca:
Wydawnictwo Uniwersytetu Śląskiego
Tematy:
English learning belief
self-efficacy
difference
proficiency
feedback
strategy
Opis:
Learners’ beliefs on language learning and perceived self-efficacy are important to the success of their second/foreign language (SL/FL) learning. To reveal the general profiles of and relationship between Chinese students’ beliefs about English learning and self-efficacy, the present study examined beliefs about English learning and self-efficacy held by Chinese university EFL (English as a FL) learners at differing English proficiency levels. A total of 1,698 students from a top university in Beijing answered a battery of questionnaires. The results revealed a general overview of the students’ beliefs about the nature of language learning and the roles of teachers, feedback and learning strategies, and self-efficacy. Another major finding was that participants at different English proficiency levels differed significantly from one another in beliefs about language learning and self-efficacy.
Źródło:
Theory and Practice of Second Language Acquisition; 2023, 9, 1; 1-25
2450-5455
2451-2125
Pojawia się w:
Theory and Practice of Second Language Acquisition
Dostawca treści:
Biblioteka Nauki
Artykuł

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