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Wyświetlanie 1-15 z 52
Tytuł:
X-maximal congruences and relevant sets for algebras
Autorzy:
Staruch, B.
Powiązania:
https://bibliotekanauki.pl/articles/121943.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Humanistyczno-Przyrodniczy im. Jana Długosza w Częstochowie. Wydawnictwo Uczelniane
Tematy:
atomowość
właściwości siatki bieżnej
twierdzenie Birkhoffa
siatka zgodności
atomicity
Birkhoff theorem
congruence grid
properties of convergent grid
Opis:
We introduce and investigate X-maximal congruences and relevant sets for a given algebra. We describe interrelations among these concepts and atomicity of the congruence lattice and the number of atoms. We also investigate subdirect decomposition of algebras into subdirectly irreducible factors.
Źródło:
Scientific Issues of Jan Długosz University in Częstochowa. Mathematics; 2016, 21; 93-104
2450-9302
Pojawia się w:
Scientific Issues of Jan Długosz University in Częstochowa. Mathematics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Weak-hyperlattices derived from fuzzy congruences
Autorzy:
Koguep, Blériot Blaise Njionou
Lele, Celestin
Powiązania:
https://bibliotekanauki.pl/articles/38118121.pdf
Data publikacji:
2017-06-01
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
hyperlattice
ideal
prime ideal
fuzzy ideal
fuzzy prime ideal
fuzzy congruence relation
Opis:
In this paper we explore the connections between fuzzy congruence relations, fuzzy ideals and homomorphisms of hyperlattices. Indeed, we introduce the concept of fuzzy quotient set of hyperlattices as it was done in the case of rings [19]. We prove that a fuzzy congruence induces a fuzzy ideal of the fuzzy quotient hyperlattice. In particular, we establish necessary and sufficient conditions for a zero-fuzzy congruence class to be a fuzzy ideal of a hyperlattice.
Źródło:
Discussiones Mathematicae - General Algebra and Applications; 2017, 37, 1; 75-91
1509-9415
Pojawia się w:
Discussiones Mathematicae - General Algebra and Applications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Three dimensional optical CDMA framework with direct detection technique
Autorzy:
Panda, Satyasen
Powiązania:
https://bibliotekanauki.pl/articles/1178377.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Cross correlation (CC)
Multiple access interference (MAI)
Phase induced intensity noise (PIIN)
Spectral amplitude coding optical code division multiple access (SAC-OCDMA)
Three dimensional modified quadratic congruence/prime hop code (3-D MQC/PHC)
Three dimensional optical code division multiple access (3-D OCDMA)
Opis:
In this paper, a three-dimensional (3-D) wavelength/time/space code is developed for optical code division multiple access (OCDMA) networks with direct detection technique in the receiver side. The 3-D codes are developed by mixing two-dimensional modified quadratic congruence (MQC) code and one-dimensional prime hop code (PHC) code. The encoders and decoders are constructed using fiber Bragg gratings and delay lines to minimize the bit error rate (BER). The performance analysis of the 3-D OCDMA system is based on measurement of signal to noise ratio (SNR), BER, received power and eye diagram for different numbers of simultaneous users. Also, in the analysis, various types of noises and multiple access interference (MAI) effects are considered. The received optical power is also measured at various levels of BER to analyze the effect of attenuation.
Źródło:
World Scientific News; 2017, 77, 2; 337-353
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The semantical hyperunification problem
Autorzy:
Denecke, Klaus
Koppitz, Jörg
Wismath, Shelly
Powiązania:
https://bibliotekanauki.pl/articles/728730.pdf
Data publikacji:
2001
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
hypersubstitution
fully invariant congruence relation
hyperunification problem
Opis:
A hypersubstitution of a fixed type τ maps n-ary operation symbols of the type to n-ary terms of the type. Such a mapping induces a unique mapping defined on the set of all terms of type t. The kernel of this induced mapping is called the kernel of the hypersubstitution, and it is a fully invariant congruence relation on the (absolutely free) term algebra $F_{τ}(X)$ of the considered type ([2]). If V is a variety of type τ, we consider the composition of the natural homomorphism with the mapping induced by a hypersubstitution. The kernel of this mapping is called the semantical kernel of the hypersubstitution with respect to the given variety. If the pair (s,t) of terms belongs to the semantical kernel of a hypersubstitution, then this hypersubstitution equalizes s and t with respect to the variety. Generalizing the concept of a unifier, we define a semantical hyperunifier for a pair of terms with respect to a variety. The problem of finding a semantical hyperunifier with respect to a given variety for any two terms is then called the semantical hyperunification problem.
We prove that the semantical kernel of a hypersubstitution is a fully invariant congruence relation on the absolutely free algebra of the given type. Using this kernel, we define three relations between sets of hypersubstitutions and sets of varieties and introduce the Galois correspondences induced by these relations. Then we apply these general concepts to varieties of semigroups.
Źródło:
Discussiones Mathematicae - General Algebra and Applications; 2001, 21, 2; 175-200
1509-9415
Pojawia się w:
Discussiones Mathematicae - General Algebra and Applications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Political Representation of Salient Issues
Autorzy:
Burean, Toma
Powiązania:
https://bibliotekanauki.pl/articles/1810948.pdf
Data publikacji:
2015-09-30
Wydawca:
Polskie Towarzystwo Socjologiczne
Tematy:
political representation
congruence
salience
left-right
Eastern Europe
Opis:
This paper deals with research into the quality of democracy and political representation and intends to make two contributions to the debate on the representation of citizens’ preferences in Eastern Europe. First, attention is focused on the level of congruence in a period of transition (1998–2001) in two countries: Hungary and Poland. The intent is to demonstrate that political representation, understood as a congruence of preferences on issues, is present in transitional democracies and improves in Poland from 1997 to 2001. Second, differences in congruence are accounted for. The first hypothesis is that citizens’ and parliamentarians’ rankings of the importance of issues will differ due to the different reasons these groups become involved in politics. Secondly, the variation of congruence is explained by the importance (salience) citizens attribute to an issue. Furthermore, saliency makes political parties crowd to represent the majority preference. On less salient issues political party representatives hold to their ideological preferences. For comparison purposes congruence is operationalized as a ‘one to many linkage’ and is measured in accord with the measurements of Kitschelt et al. (1999) of absolute and relative representation. The hypotheses are tested using data from 1997 and 2001 for Poland and 1998 for Hungary. The data allows for measuring policy preference on a range of issues in economic, social, cultural, and foreign policy domains. The measures of congruence are unique in recording the preferences of a sample of citizens and a sample of representatives in both countries. For citizens, the analysis was conducted at the level of individuals and party-supporter groups, while for the MPs, it was conducted at the level of political party groups. The findings have implications for the study of how saliency affects political representation and contribute to the understanding of the transition to democracy in Eastern Europe.
Źródło:
Polish Sociological Review; 2015, 191, 3; 329-353
1231-1413
2657-4276
Pojawia się w:
Polish Sociological Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Clifford semiring congruences on an additive regular semiring
Autorzy:
Bhuniya, A.
Powiązania:
https://bibliotekanauki.pl/articles/729215.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
additive regular semiring
skew-ring
trace
kernel
Clifford congruence
Opis:
A congruence ρ on a semiring S is called a (generalized)Clifford semiring congruence if S/ρ is a (generalized)Clifford semiring. Here we characterize the (generalized)Clifford congruences on a semiring whose additive reduct is a regular semigroup. Also we give an explicit description for the least (generalized)Clifford congruence on such semirings.
Źródło:
Discussiones Mathematicae - General Algebra and Applications; 2014, 34, 2; 143-153
1509-9415
Pojawia się w:
Discussiones Mathematicae - General Algebra and Applications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Tense Operators on BL-algebras and Their Applications
Autorzy:
Paad, Akbar
Powiązania:
https://bibliotekanauki.pl/articles/2033857.pdf
Data publikacji:
2021-05-28
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
(simple) tense BL-algebra
tense operators
tense filter
tense congruence
Opis:
In this paper, the notions of tense operators and tense filters in \(BL\)-algebras are introduced and several characterizations of them are obtained. Also, the relation among tense \(BL\)-algebras, tense \(MV\)-algebras and tense Boolean algebras are investigated. Moreover, it is shown that the set of all tense filters of a \(BL\)-algebra is complete sublattice of \(F(L)\) of all filters of \(BL\)-algebra \(L\). Also, maximal tense filters and simple tense \(BL\)-algebras and the relation between them are studied. Finally, the notions of tense congruence relations in tense \(BL\)-algebras and strict tense \(BL\)-algebras are introduced and an one-to-one correspondence between tense filters and tense congruences relations induced by tense filters are provided.
Źródło:
Bulletin of the Section of Logic; 2021, 50, 3; 299-324
0138-0680
2449-836X
Pojawia się w:
Bulletin of the Section of Logic
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spouses’ fit and marriage satisfaction in late adulthood
Autorzy:
Brudek, Paweł
Korulczyk, Tomasz
Korulczyk, Natalia
Powiązania:
https://bibliotekanauki.pl/articles/2127263.pdf
Data publikacji:
2019-04-08
Wydawca:
Katolicki Uniwersytet Lubelski Jana Pawła II. Towarzystwo Naukowe KUL
Tematy:
spouses’ fit
personality congruence
values congruence
marital satisfaction
late adulthood
Opis:
Although marital satisfaction is intensively explored in the psychological literature at present, there are few papers strictly focused on spouse fit in late adulthood. The aim of the present study was to determine whether spouses’ personality fit and values fit are associated with marital satisfaction. To test this, we examined 60 Polish married couples (120 participants) aged 60-75. We used the following measures: NEO-PI-R (as adapted by J. Siuta), Scheler Values Scale (P. Brzozowski), and the Well-Matched Marriage Questionnaire (Plopa & Rostowski). Due to the nonindependence of dyads, data was analyzed in the single-level paradigm, and the level of fit was estimated by Gower Agreement Index (J. C. Gower). The results yielded by SEM path analysis indicate that spouses’ personality fit is associated with the satisfaction of both spouses, while spouses’ values fit, under-stood objectively in accordance with Scheler’s theory, is not related to their satisfaction. The findings may be useful in psychological practice such as marriage counselling and marital therapy.
Źródło:
Roczniki Psychologiczne; 2018, 21, 1; 69-85
1507-7888
Pojawia się w:
Roczniki Psychologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sparingly glued tolerances
Autorzy:
Górnicka, A.
Grygiel, J.
Tyrala, I.
Powiązania:
https://bibliotekanauki.pl/articles/951855.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Humanistyczno-Przyrodniczy im. Jana Długosza w Częstochowie. Wydawnictwo Uczelniane
Tematy:
łańcuchy skończone
kongruencja
tolerancje
finite chain
congruence
tolerances
Opis:
We introduce the notion of sparingly glued tolerances for lattices and then count their numbers in case of finite chains. We also estimate the density of sparingly glued tolerances among all glued tolerances on finite chains.
Źródło:
Scientific Issues of Jan Długosz University in Częstochowa. Mathematics; 2015, 20; 49-54
2450-9302
Pojawia się w:
Scientific Issues of Jan Długosz University in Częstochowa. Mathematics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Some properties of congurence relations on orthomodular lattices
Autorzy:
Dorfer, Gerhard
Powiązania:
https://bibliotekanauki.pl/articles/728766.pdf
Data publikacji:
2001
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
orthomodular lattice
congruence relation
congruence-regular
congruence-uniform
congruence-permutable
Opis:
In this paper congruences on orthomodular lattices are studied with particular regard to analogies in Boolean algebras. For this reason the lattice of p-ideals (corresponding to the congruence lattice) and the interplay between congruence classes is investigated. From the results adduced there, congruence regularity, uniformity and permutability for orthomodular lattices can be derived easily.
Źródło:
Discussiones Mathematicae - General Algebra and Applications; 2001, 21, 1; 57-66
1509-9415
Pojawia się w:
Discussiones Mathematicae - General Algebra and Applications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Some modifications of congruence permutability and dually congruence regular varietie
Autorzy:
Chajda, Ivan
Eigenthaler, Günther
Powiązania:
https://bibliotekanauki.pl/articles/728754.pdf
Data publikacji:
2001
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
congruence regularity
local congruence regularity
dual congruence regularity
local n-permutability
Opis:
It is well known that every congruence regular variety is n-permutable (in the sense of [9]) for some n ≥ 2. For the explicit proof see e.g. [2]. The connections between this n and Mal'cev type characterizations of congruence regularity were studied by G.D. Barbour and J.G. Raftery [1]. The concept of local congruence regularity was introduced in [3]. A common generalization of congruence regularity and local congruence regularity was given in [6] under the name "dual congruence regularity with respect to a unary term g". The natural problem arises what modification of n-permutability is satisfied by dually congruence regular varieties. The aim of this paper is to find out such a modification, to characterize varieties satisfying it by a Mal'cev type condition and to show connections with normally presented varieties (see e.g. [5], [8], [11]). The latter concept was introduced already by J. P≥onka under a different term; the names "normal identity" and "normal variety" were firstly used by E. Graczyńska in [8].
Źródło:
Discussiones Mathematicae - General Algebra and Applications; 2001, 21, 2; 165-174
1509-9415
Pojawia się w:
Discussiones Mathematicae - General Algebra and Applications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Should Advertisers Avoid Controversial TV Content? Female Viewer Loyalty and Purchase Intent in the Context of Targeted Sponsorship Vignettes
Autorzy:
Banerski, Grzegorz
Biele, Cezary
Awdziej, Marcin
Kaczyński, Adam
Molenda, Sylwester
Powiązania:
https://bibliotekanauki.pl/articles/1934213.pdf
Data publikacji:
2021
Wydawca:
Akademia Leona Koźmińskiego w Warszawie
Tematy:
sponsorship vignette
loyalty
purchase intentions
controversial program
media context
congruence
Opis:
Purpose: This study aims to investigate whether controversial TV content impacts the effects of non – standard advertising such as sponsorship vignette among female viewers. Methodology: The present study used two field experiments (n = 222; n = 219) conducted as a Computer-Assisted Web Interview (CAWI) questionnaire, during which video material was presented. The study manipulated controversial and non-controversial and the variable of congruence and incongruence – through the argument of video material in the form of TV programs and advertising spots. Results: The empirical investigation revealed that controversial and incongruent content does not necessarily alter the effect of a sponsorship vignette. Loyal viewers who consistently follow programs were found to have higher purchase intent than less loyal ones. Implications: The results suggest that advertisers should consider placing their messages in the context of controversial TV programming, which does not have to be congruent with the ads displayed. Limitations: The stimuli applied in the studies were arbitrary, to a certain extent. The study did not investigate program’s about sex that fit the definition of controversiality. Originality/value: The study contributes to the existing literature on ad–content congruence by investigating consumer responses to innovative ad format: the sponsorship vignette. We investigated how specific content watched in longer periods of time (i.e. a series) may impact the advertising effectiveness of embedded sponsorship vignettes. This approach allowed us to demonstrate the importance of viewers’ loyalty towards a TV program, resulting in a change of the level of purchase intent of advertised product.
Źródło:
Central European Management Journal; 2021, 29(2); 2-32
2658-0845
2658-2430
Pojawia się w:
Central European Management Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Self-preservation positions in family communications: parent – child interaction
Samozachowanie pozycji komunikacyjnej w interakcjach rodzic – dziecko
Autorzy:
Sekera, Ondřej
Powiązania:
https://bibliotekanauki.pl/articles/2099392.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Wrocławski. Wydział Nauk Historycznych i Pedagogicznych. Instytut Pedagogiki. Zakład Historii Edukacji
Tematy:
self-preservation position
parent – child interaction
communication functions in language
congruence
incongruence
samozachowanie
pozycja komunikacyjna
interakcja rodzic – dziecko
funkcja komunikacji
kongruencja
sprzeczność komunikacyjna
Opis:
This paper describes the part of results of research into family communications. Our two years’ investigation was targeted at communication between parents and children. The focus was on so called “Satir Models” of self-preservation positions taken by parents in family communications most frequently. The data come from authentic recordings of common communications in families related to specific situations (for example, children getting ready for a day at school, during art and craft activities, sitting at the table, etc.). Our aim is to describe and analyse concrete examples of family communications used by parents in the child directed speech to fulfil the self-preservation strategies.
W artykule opisano wyniki badań w dziedzinie komunikacji rodzinnej. Dwuletnie badania ukierunkowane były na komunikację między rodzicami i dziećmi. Skupiono się na tak zwanych „modelach” Satir – ukazujących postawy samozachowawcze, najczęściej podejmowane przez rodziców w przekazach rodzinnych. Dane pochodzą z autentycznych nagrań wspólnej, rodzinnej komunikacji, zaistniałej w konkretnych sytuacjach (na przykład dzieci przygotowujące się do szkoły, podczas uprawiania sztuki i rzemiosła, siedzące przy stole itp). Naszym celem było opisanie i analiza – w kontekście realizacji strategii samozachowawczych – konkretnych przykładów w zakresie komunikacji rodzinnej, stosowanej przez rodziców w relacji z dzieckiem.
Źródło:
Wychowanie w Rodzinie; 2017, XV, (1/2017); 145-154
2082-9019
Pojawia się w:
Wychowanie w Rodzinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ring-like operations is pseudocomplemented semilattices
Autorzy:
Chajda, Ivan
Länger, Helmut
Powiązania:
https://bibliotekanauki.pl/articles/728882.pdf
Data publikacji:
2000
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
pseudocomplemented semilattice
Boolean algebra
Boolean ring
distributivity
linear equation
ideal
congruence kernel
Opis:
Ring-like operations are introduced in pseudocomplemented semilattices in such a way that in the case of Boolean pseudocomplemented semilattices one obtains the corresponding Boolean ring operations. Properties of these ring-like operations are derived and a characterization of Boolean pseudocomplemented semilattices in terms of these operations is given. Finally, ideals in the ring-like structures are defined and characterized.
Źródło:
Discussiones Mathematicae - General Algebra and Applications; 2000, 20, 1; 87-95
1509-9415
Pojawia się w:
Discussiones Mathematicae - General Algebra and Applications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Retracts and Q-independence
Autorzy:
Chwastyk, Anna
Powiązania:
https://bibliotekanauki.pl/articles/728880.pdf
Data publikacji:
2007
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
general algebra
term function
Q-independence
M, I, S, S₀, A₁, G-independence
t-independence
retraction
retract
Stone algebra
skeleton and set of dense element of Stone algebra
Glivenko congruence
Opis:
A non-empty set X of a carrier A of an algebra A is called Q-independent if the equality of two term functions f and g of the algebra A on any finite system of elements a₁,a₂,...,aₙ of X implies f(p(a₁),p(a₂),...,p(aₙ)) = g(p(a₁),p(a₂),...,p(aₙ)) for any mapping p ∈ Q. An algebra B is a retract of A if B is the image of a retraction (i.e. of an idempotent endomorphism of B). We investigate Q-independent subsets of algebras which have a retraction in their set of term functions.
Źródło:
Discussiones Mathematicae - General Algebra and Applications; 2007, 27, 2; 235-243
1509-9415
Pojawia się w:
Discussiones Mathematicae - General Algebra and Applications
Dostawca treści:
Biblioteka Nauki
Artykuł
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