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    Wyświetlanie 1-15 z 15
    Tytuł:
    Directional change and windup phenomena in LQR-controlled systems with actuator failure
    Autorzy:
    Horla, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/141455.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    directional change
    windup phenomenon
    actuator failure
    Opis:
    The paper presents a phenomenon of directional change in the case of a LQR controller applied to multivariable plants with amplitude and rate constraints imposed on the control vector, as well as the impact of the latter on control performance, with the indirect observation of the windup phenomenon effect via frequency of consecutive resaturations. The interplay of directional change of the computed control vector with control performance has been thoroughly investigated, and it is a result of the presence of constraints imposed on the applied control vector for different ratios of the number of control inputs to plant outputs. The impact of the directional change phenomenon on the control performance (and also on the windup phenomenon) has been defined, stating that performance deterioration is not tightly coupled with preservation of direction of the computed control vector. This conjecture has been supported by numerous simulation results for different types of plants with different LQR controller parameters.
    Źródło:
    Archives of Electrical Engineering; 2018, 67, 2; 345--359
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Eutectic Structures Competition in the Stripes Strengthening the (Zn) – Single Crystal
    Autorzy:
    Wołczyński, W.
    Kjelstrup, S.
    Bedeaux, D.
    Szajnar, J.
    Billia, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/380972.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    eutectic structure selection
    Zn
    single crystal
    branching phenomenon
    Opis:
    Some eutectic stripes have been generated in a hexagonal (Zn) - single crystal. The stripes are situated periodically with the constant inter stripes spacing. The eutectic structure in the stripes consists of strengthening inter-metallic compound, Zn16Ti, and (Zn) – solid solution. The rod-like irregular eutectic structure (with branches) appears at low growth rates. The regular lamellar eutectic structure is observed at middle growth rates. The regular rod-like eutectic structure exists exclusively in the stripes at some elevated growth rates. A new thermodynamic criterion is recommended. It suggests that this eutectic regular structure is the winner in a morphological competition for which the minimum entropy production is lower. A competition between the regular rod-like and the regular lamellar eutectic growth is described by means of the proposed criterion. The formation of branches within irregular eutectic structure is referred to the state of marginal stability. A continuous transitions from the marginal stability to the stationary state are confirmed by the continuous transformations of the irregular eutectic structure into the regular one.
    Źródło:
    Archives of Foundry Engineering; 2014, 14, 4; 95-102
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Directional change in multivariable LQG control with actuator failure
    Autorzy:
    Horla, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/199944.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    directional change
    actuator failure
    windup phenomenon
    LQG
    siłownik
    Opis:
    The paper presents the phenomenon of directional change in LQG control of multivariable systems with amplitude constraints, as well as the impact of the latter on control performance. The interplay of directional change of the computed control vector with control performance has been thoroughly investigated, and is a result of the presence of constraints imposed on the applied control vector for different proportions of the number of control inputs to plant outputs. The impact of directional change phenomenon on the control performance has been defined, stating that performance deterioration is not tightly coupled with preservation of direction of the computed control vector. The statement has been supported by numerous simulation results for different types of plants with different LQG controller parameters.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2017, 65, 4; 419-428
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Education in the unforeseeable future
    Autorzy:
    Wróblewski, Andrzej Kajetan
    Powiązania:
    https://bibliotekanauki.pl/articles/702956.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    education
    “Edison test”
    “fake news”
    phenomenon-based learning
    Opis:
    Hundred years ago education aimed mainly at memorizing as much information as possible. Such an approach lost its sense in the digital age of today since we are overwhelmed by an easily accessible ocean of true information mixed with “fake news”. Hence, the role of the teachers nowadays must be to guide and organize the learning process rather than provide knowledge. The students must no longer be passive recipients but active participants in the process of acquiring knowledge. A new approach of “phenomenon-based learning” introduced in schools in Finland, Norway and other countries agrees also with the holistic process of human cognition rather than absorbing information in a way sliced into traditional disciplines. In the future, say, fifty years from now, the role of teachers may be partly modified by the use of robots, which however could not replace creative thinking of human beings.
    Źródło:
    Nauka; 2017, 3
    1231-8515
    Pojawia się w:
    Nauka
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Phenomenon of the eddy current exceeding the exciting magnetomotive force
    Autorzy:
    Vogel, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/141192.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    analytic field solution
    eddy current
    magnetic coupling
    phenomenon
    Opis:
    Harmonic flux penetrating solid conductive material causes eddy currents inside. It seems plausible that its magnitude does not exceed the exciting magnetomotive force (mmf). However, under certain circumstances the opposite occurs. This article deals with a special case in which the eddy current is approximately 13% higher than the exciting mmf. An analytical field solution, a finite element calculation and a measurement proving this phenomenon are presented. A special flux linkage is turned out to be the reason for this phenomenon. Finally, another example with higher pronounced mmfexceeding in a coil is presented.
    Źródło:
    Archives of Electrical Engineering; 2013, 62, 1; 123-140
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Plastic Instabilities Induced by the Portevin - Le Châtelier Effect and Fracture Character of Deformed Mg-Li Alloys Investigated Using the Acoustic Emission Method
    Autorzy:
    Pawełek, A.
    Piątkowski, A.
    Wajda, W.
    Skuza, W.
    Tarasek, A.
    Ranachowski, Z.
    Ranachowski, P.
    Ozgowicz, W.
    Kúdela, Jr.
    Kúdela, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/353865.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    lightweight alloys
    acoustic emission
    fracture
    Portevin-Le Châtelier phenomenon
    twinning
    dislocations
    shear bands
    Opis:
    The results of the investigation of both mechanical and acoustic emission (AE) behaviors of Mg4Li5Al and Mg4Li4Zn alloys subjected to compression and tensile tests at room temperature are compared with the test results obtained using the same alloys and loading scheme but at elevated temperatures. The main aim of the paper is to investigate, to determine and to explain the relation between plastic flow instabilities and the fracture characteristics. There are discussed the possible influence of the factors related with enhanced internal stresses such as: segregation of precipitates along grain boundaries, interaction of solute atoms with mobile dislocations (Cottrell atmospheres) as well as dislocation pile-ups which may lead to the microcracks formation due to the creation of very high stress concentration at grain boundaries. The results show that the plastic flow discontinuities are related to the Portevin-Le Châtelier phenomenon (PL effect) and they are correlated with the generation of characteristic AE pulse trains. The fractography of broken samples was analyzed on the basis of light (optical), TEM and SEM images.
    Źródło:
    Archives of Metallurgy and Materials; 2016, 61, 2A; 897-904
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The influence of ultrasound signal parameters on sonoluminescence light intensity
    Autorzy:
    Szmechta, M.
    Boczar, T.
    Zmarzły, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/140426.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    diagnostics of insulating oils
    sonoluminescence phenomenon
    acoustic cavitation
    ultrasound signal
    acoustic emission Signac
    Opis:
    Topics of this article concern the study of the fundamental nature of the sonoluminescence phenomenon occurring in liquids. At the Institute of Electrical Power Engineering at Opole University of Technology the interest in that phenomenon known as secondary phenomenon of cavitation caused by ultrasound became the genesis of a research project concerning acoustic cavitation in mineral insulation oils in which a number of additional experiments performed in the laboratory aimed to determine the influence of a number of acoustic parameters on the process of the studied phenomenona. The main purpose of scientific research subject undertaken was to determine the relationship between the generation of partial discharges in high-voltage power transformer insulation systems, the issue of gas bubbles in transformer oils and the generated acoustic emission signals. It should be noted that currently in the standard approach, the phenomenon of generation of acoustic waves accompanying the occurrence of partial discharges is generally treated as a secondary phenomenon, but it can also be a source of many other related phenomena. Based on our review of the literature data on those referred subjects taken, it must be noted, that this problem has not been clearly resolved, and the description of the relationship between these phenomena is still an open question. This study doesn’t prove all in line with the objective of the study, but can be an inspiration for new research project in the future in this topic. Solution of this problem could be a step forward in the diagnostics of insulation systems for electrical Power devices based on non-invasive acoustic emission method.
    Źródło:
    Archives of Electrical Engineering; 2013, 62, 4; 605-612
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Local equivalent water thickness determination as a source of data for flood phenomenon observation
    Autorzy:
    Birylo, M.
    Nastula, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/12012.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    equivalent water thickness
    determination
    data source
    flood
    phenomenon
    observation
    Gravity Recovery and Climate Experiment
    Opis:
    In the paper a flood phenomenon is analyzed. For this purpose data from GRACE satellites (Gravity Recovery and Climate Experiment) was used. Filtered data presented in a form of millimeters of Equivalent Water Thickness (EWT) was interpolated in places where flood in 2010 had happened (south of Poland). On a basis of graph where time series of EWT were presented, some conclusions were made. For the thesis confirmation meteorological WGHM and hydrological NOAA models were added to the GRACE model.
    Źródło:
    Papers on Global Change; 2012, 19
    2300-8121
    1730-802X
    Pojawia się w:
    Papers on Global Change
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A new fuzzy design for switching gain adaptation of sliding mode controller for a wind energy conversion system using a doubly fed induction generator
    Autorzy:
    Horch, Mohamed
    Chemidi, Abdelkarim
    Baghli, Lotfi
    Kadi, Sara
    Powiązania:
    https://bibliotekanauki.pl/articles/2202557.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    chattering phenomenon
    doubly fed induction generator
    fuzzy logic gain adaptation
    sliding mode control
    vector control
    wind energy conversion systems
    Opis:
    The paper proposes a newrobust fuzzy gain adaptation of the sliding mode (SMC) power control strategy for the wind energy conversion system (WECS), based on a doubly fed induction generator (DFIG), to maximize the power extracted from the wind turbine (WT). The sliding mode controller can deal with any wind speed, ingrained nonlinearities in the system, external disturbances and model uncertainties, yet the chattering phenomenon that characterizes classical SMC can be destructive. This problem is suitably lessened by adopting adaptive fuzzy-SMC. For this proposed approach, the adaptive switching gains are adjusted by a supervisory fuzzy logic system, so the chattering impact is avoided. Moreover, the vector control of the DFIG as well as the presented one have been used to achieve the control of reactive and active power of the WECS to make the wind turbine adaptable to diverse constraints. Several numerical simulations are performed to assess the performance of the proposed control scheme. The results show robustness against parameter variations, excellent response characteristics with a reduced chattering phenomenon as compared with classical SMC.
    Źródło:
    Archives of Electrical Engineering; 2023, 72, 1; 273--291
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Повесть Ивана Шмелева "Это было" и рассказ Эдгара По "Система доктора Смоля и профессора Перро": экспрессионистская трактовка романтического сюжета
    "It Was" (Eto Bylo) by Ivan Shmelyov and "The System of Doctor Tarr and Professor Fether" by Edgar Poe: Expressionistic Interpretation of the Romantic Plot
    Autorzy:
    Stiepanowa, Anna
    Powiązania:
    https://bibliotekanauki.pl/articles/2032386.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    phenomenon of madness
    romantic canon
    expressionistic style
    visual-plastic image
    verbal image
    aesthetics of presentation
    expressionist paintings
    expressionist movie
    Źródło:
    Slavia Orientalis; 2018, LXVII, 4; 679-690
    0037-6744
    Pojawia się w:
    Slavia Orientalis
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Numerical analysis of fluid motion inside partially filled container which is moving in unsteady way
    Analiza numeryczna zachowania się cieczy wewnątrz częściowo wypełnionego zbiornika poruszającego się ruchem nieustalonym
    Autorzy:
    Sowińska, M.
    Piechna, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/139566.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    sloshing phenomenon
    center of gravity motion
    spectrum of unsteady force load
    zjawisko przelewania
    zmiany położenia środka ciężkości
    widmo obciążenia nieustalonymi siłami
    Opis:
    The paper describes the behavior of the liquid in a container that moves with a constant speed along a track consisting of three arcs. Such a complicated track shape generates complex form of inertia forces acting on the liquid and generates the sloshing effect. The behavior of the tank container vehicle is affected by the time-dependent inertia forces associated with the transient sloshing motion of the liquid in the non-inertial frame. These internal excitations, acting on a tank construction, can cause a loss of stability of the vehicle. For that reason, the authors analyze the dynamic loads acting on the walls of the tank truck container. The variation of the position of the liquid cargo gravity center, that depends on the filling level of the container, is also analyzed. The simulations were performed according to the varying fill level, which was 20%, 50% and 80% of a liquid in the whole tank volume. The simulations were carried out for a one-compartment container. Another aim of this study was the investigation of the influence of container division (tank with one, two and three compartments) on behavior of the liquid. These simulations considered only the half-filled container which was treated as a dangerous configuration prohibited by the law regulations for one-compartment tank. The results of simulation are presented in the form of visualization of temporary liquid free surface shape, variation of forces and moments, as well as frequency analysis. The results of simulation were analyzed, and some general conclusion were derived, providing the material for future investigation and modifications of the law regulations.
    Artykuł opisuje zachowanie się cieczy wewnątrz zbiornika, który porusza się ze stałą prędkością wzdłuż toru składającego się z trzech łuków. Na zachowanie zbiornika cysterny mają wpływ siły zależne od czasu związane z nieustalonym ruchem cieczy w układzie nieinercjalnym. Wewnętrzne wymuszenia działające na konstrukcję zbiornika mogą spowodować utratę stabilności pojazdu. Z tego powodu w artykule przeanalizowano obciążenia dynamiczne działające na ściany zbiornika pojazdu cysterny, a także zmianę położenia środka ciężkości przewożonej cieczy, w zależności od stopnia napełnienia zbiornika. Symulacje zostały przeprowadzone dla różnych stopni napełnienia przewożonym ładunkiem, tj. 20%, 50% i 80% cieczy w całkowitej objętości zbiornika. Dla tych stopni napełnienia rozpatrywano zbiornik jednokomorowy. Kolejnym celem badań było sprawdzenie wpływu podziału zbiornika (na jedną, dwie i trzy komory) na zachowanie się cieczy wewnątrz zbiornika. W tym przypadku rozważano zbiornik wypełniony cieczą w połowie, co uważane jest jako niebezpieczny stopień napełnienia zabroniony według regulacji prawnych dotyczących przewozu materiałów w cysternach ze zbiornikiem jednokomorowym. Wyniki symulacji zostały przedstawione w postaci kształtów powierzchni swobodnej, przebiegu sił i ich momentów działających na ściany zbiornika a także analizy częstotliwościowej tych sygnałów. Wyniki zostały przeanalizowane i na ich podstawie wyciągnięto wnioski, które dają podstawę do dalszych badań w tym temacie i dyskusji nad możliwymi zmianami w regulacjach prawnych dotyczących przewozu cieczy w cysternach.
    Źródło:
    Archive of Mechanical Engineering; 2015, LXII, 4; 477-508
    0004-0738
    Pojawia się w:
    Archive of Mechanical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Robert Michels — zapoznany klasyk socjologii
    Robert Michels—An Underappreciated Figure in Sociology
    Autorzy:
    Miński, Radomir
    Powiązania:
    https://bibliotekanauki.pl/articles/1373008.pdf
    Data publikacji:
    2017-10-10
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Robert Michels
    apotheosis of feminism
    local patriotism
    social movements
    phenomenon of goal displacement
    apoteoza feminizmu
    patriotyzm lokalny
    ruchy społeczne
    zjawisko przemieszczenia celów
    Opis:
    Robert Michels (1876–1936) considered himself to be a disillusioned socialist, who, under the influence of elitism, rejected democracy and moved into the fascist camp. As a figure in sociology he is associated solely with the “iron law of oligarchy.” In Poland, it is a little-known fact that in Western social thought he is viewed as a socially engaged sociologist—a “genuine” researcher gifted with sociological imagination and a passion for scholarship. The aim of the author is to present Michels as a scholar in many areas: feminist issues, local patriotism in the context of national citizenship, phenomena of a general sociological nature, the history of Italy, and social movements. Furthermore, the author illustrates the German writer Timm Genett’s thesis that Michels should also be valued as a pioneer in the study of social movements, which he consistently examined in his analyses of organizations, systematically investigating the degeneration of social movements and the shifting of organizational aims.
    Źródło:
    Kultura i Społeczeństwo; 2017, 61, 4; 169-188
    2300-195X
    Pojawia się w:
    Kultura i Społeczeństwo
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Discussion on Usability of the Niyama Criterion for Porosity Predicting in Cast Iron Castings
    Autorzy:
    Ignaszak, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/379954.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    cast iron castings
    graphite expansion phenomenon
    porosity
    simulation codes
    Niyama criterion
    experimental validation
    odlewy żeliwne
    zjawisko ekspansji grafitu
    porowatość
    symulacja
    kryterium Niyamy
    Opis:
    The paper refers to previous publications of the author, focused on criteria of casting feeding, including the thermal criterion proposed by Niyama. On the basis of this criterion, present in the post-processing of practically all the simulation codes, danger of casting compactness (in the sense of soundness) in form of a microporosity, caused by the shrinkage phenomena, is predicted. The vast majority of publications in this field concerns shrinkage and feeding phenomena in the cast steel castings – these are the alloys, in which parallel expansion phenomenon does not occur as in the cast irons (graphite crystallization). The paper, basing on the simulation-experimental studies, presents problems of usability of a classic, definition-based approach to the Niyama criterion for the cast iron castings, especially of greater massiveness, for prediction of presence of zones of dispersed porosity, with relation to predictions of the shrinkage type defects. The graphite expansion and its influence on shrinkage compensation during solidification of eutectic is also discussed.
    Źródło:
    Archives of Foundry Engineering; 2017, 17, 3; 196-204
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Przemyślenia pod rozwagę, niekoniecznie do zastosowania. O dzisiejszej edukacji historycznej w Polsce
    Thoughts for Consideration, Not Necessarily for Application: On Today’s History Education in Poland
    Autorzy:
    Kula, Marcin
    Powiązania:
    https://bibliotekanauki.pl/articles/1372823.pdf
    Data publikacji:
    2020-09-21
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    history
    teaching history
    school curriculum
    historical events
    historical phenomenon
    functioning of history in life
    historical policy
    historia
    nauczanie historii
    program szkolny
    zdarzenie historyczne
    zjawisko historyczne
    funkcjonowanie historii w życiu
    polityka historyczna
    Opis:
    For the teaching of history in schools to be effective, it must be useful for something – either in an intellectual sense (for a better understanding of the world) or in a practical sense (for various professions related to the humanities). The only purpose of teaching an “encyclopedia of facts” is that it is good to have a minimum of knowledge in every field. Teaching history to mark group identity is acceptable, as is any education in the field of national culture, provided it is not exclusive with regard to the heritage and achievements of others. As a history teacher, the author does not accept the teaching of history for the purpose of inculcating a sense of national pride. He would like the study of history to increase the intellectual abilities of students, and in effect, their wisdom.
    Źródło:
    Kultura i Społeczeństwo; 2020, 64, 3; 121-141
    2300-195X
    Pojawia się w:
    Kultura i Społeczeństwo
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wielokulturowość - wizje i współczesne realia
    Multiculturalism - Visions and Contemporary Realities
    Autorzy:
    Kurcz, Zbigniew
    Powiązania:
    https://bibliotekanauki.pl/articles/781776.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    multiculturalism as a phenomenon
    multicultural society
    cultural pluralism
    social conflict
    ethnic conflict
    social exchange
    Australia and Canada as multicultural societies
    wielokulturowość jako zjawisko
    społeczeństwo wielokulturowe
    pluralizm kulturowy
    konflikt społeczny
    konflikt etniczny
    wymiana społeczna
    Australia i Kanada jako społeczeństwa wielokulturowe
    Opis:
    In reference to Anna Śliz’s book Wielokulturowość: stygmat współczesnego świata? Próba analizy socjologicznej [Multiculturalism: The Stigma of the Modern World? An Attempt at a Sociological Analysis], the subject of this article is multiculturalism as a phenomenon, a political project, and a real kind of existing society (multiculturalism is not the same as interculturalism or transculturalism). In the discourse on multiculturalism, many specifi c questions arise: the inevitability of the  phenomenon and its genesis; the beginnings and bases of multiculturalism as a political project and its challenges; the reality of multicultural societies - from affirmation to contestation. Model discourse over multiculturalism is confronted with a range of remarks, commentaries, and questions about its fundamental significance, for example, about the potential for realizing the idea of multiculturalism in Europe, and whether Australia and Canada are now definitely multicultural societies.
    Źródło:
    Kultura i Społeczeństwo; 2019, 63, 3; 271-282
    2300-195X
    Pojawia się w:
    Kultura i Społeczeństwo
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-15 z 15

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