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    Wyświetlanie 1-4 z 4
    Tytuł:
    Protector control: Extension to a class of nonlinear distributed systems
    Autorzy:
    Qaraai, Y.
    Bernoussi, A. S.
    Powiązania:
    https://bibliotekanauki.pl/articles/907703.pdf
    Data publikacji:
    2010
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    system nieliniowy
    system rozproszony
    zaburzenia
    podatność na uszkodzenia
    nonlinear distributed systems
    disturbance
    spreadability
    vulnerability
    remediability
    protector control
    Opis:
    We present an extension of the protector control scheme introduced for the linear case in a previous work to a class of nonlinear systems. The systems considered are assumed to have a finite propagation velocity while the initial state is subject to a spreading disturbance. We characterize such a control first by using the remediability approach to the resulting nonlinear delay system, and then by coupling families of transformations and the delay approach. To illustrate this work, we provide a simulation example.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2010, 20, 3; 427-443
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Contribution of a Geographic Information System to Assess the Vulnerability to Groundwater Pollution of the Free Water Table from the Oued Souf Region (South-East Algeria)
    Autorzy:
    Khelfaoui, Faycal
    Sayad, Lamine
    Attoui, Badra
    Bouselsal, Bouualem
    Ghezaili, Salah
    Powiązania:
    https://bibliotekanauki.pl/articles/2051691.pdf
    Data publikacji:
    2021
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    free aquifer
    Oued Souf
    chemical fertilizer
    vulnerability
    DRASTIC
    GOD
    susceptibility index
    pollution
    SIG
    warstwa wodonośna
    Oued Suf
    nawozy chemiczne
    zanieczyszczenia
    Opis:
    The Oued Souf free aquifer located in the South East of Algeria represents the main water resource used mostly for urban and agricultural activities. The intensive use of chemical fertilizers has led to serious environmental problems such as contamination of the free aquifer in the region. Thus, aquifer vulnerability has been assessed using several different methods (DRASTIC, GOD, and the Susceptibility Index ‘SI’) based on a geographic information system (GIS). For each method, two vulnerability maps have been developed in the years 2002 and 2012. These maps show that the study area is more exposed to urban, and especially agricultural, pollution. Two classes of vulnerability (moderate and high) have been identified by both DRASTIC and GOD methods. A combined analysis reveals that the moderate class showing 48% (for the GOD method), and the high class showing 57% (for the DRASTIC method) are the most dominant. However, the Susceptibility Index method (SI) revealed that the vulnerability varies from moderate to very high-level classes. In 2012, about of 53% of the study area was dominated by moderate vulnerability classes. The high vulnerability class also includes a considerable part of the land (41%) around urban or strongly agricultural areas, while only 6% is under very high vulnerability groundwater contamination. In addition, a marked decrease in the vulnerability level was noticed in 2012 compared to 2002. This decrease is mainly due to the lowering of the water table after the installation of a vertical drainage network to evacuate the surplus water to the depression and Chotts areas in the North of the region. These results provide a guide for decision-makers involved in the protection of groundwater pollution in such a vulnerable area.
    Źródło:
    Civil and Environmental Engineering Reports; 2021, 31, 3; 1-17
    2080-5187
    2450-8594
    Pojawia się w:
    Civil and Environmental Engineering Reports
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Good connections: cultural dynamics for social inclusion
    Dobre połączenia: dynamika kulturalna na rzecz inkluzji społecznej
    Boas parcerias: dinâmicas culturais para a inclusão social
    Autorzy:
    Capelo, Regina
    Varela, Miguel
    Powiązania:
    https://bibliotekanauki.pl/articles/551268.pdf
    Data publikacji:
    2017
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    social vulnerability
    social exclusion
    social inclusion
    culture, connections
    podatność społeczna
    wykluczenie społeczne
    integracja społeczna
    kultura
    znajomości
    vulnerabilidade social
    exclusão social
    inclusão social
    parcerias
    Opis:
    Structural changes and social stratification in a rapidly changing world produce psychosocial and socio-cultural consequences that are expressed in mechanisms of discrimination and social exclusion and require the creation of mechanisms that motivate and reinforce culture as a strategy of social inclusion. This study describes the cultural dynamics for social inclusion developed in a vulnerable socio-economic context. The intersectoral intervention, structured weekly, involves four major themes: Carnival, flower festival, popular saints and harvest festival. The intervention in intergenerational partnership (regional government, municipality, parish council, recreational, cultural and sporting associations, sports, and other public and private institutions), made it possible to promote culture reinforcement, inform and debate contextual risk factors and prevent risk as a right and duty of citizenship. Realistic expectations regarding partnerships and social inclusion promoted reflections on the potentialities and limits of cultural dynamics in the current social context. Finally, issues for the prevention of social exclusion were discussed, generating opportunities for individual, family and group interventions.
    W szybko zmieniającym się świecie zmiany strukturalne i stratyfikacja społeczna powodują psychospołeczne i społeczno-kulturowe konsekwencje, wyrażane w formie dyskryminacji i wykluczenia społecznego. Dlatego potrzebne jest stworzenie mechanizmów, które mogą wzmacniać kulturę jako strategię integracji społecznej. Niniejsze opracowanie opisuje dynamikę kultury wykorzystywanej do integracji społecznej, rozwijanej w trudnym kontekście społeczno-gospodarczym. Interwencja międzysektorowa, realizowana cotygodniowo, obejmuje cztery główne wydarzenia: karnawał, festiwal kwiatów, dni popularnych świętych i festiwal zbiorów. Interwencja w partnerstwie międzypokoleniowym (rząd regionalny, gmina, rada parafialna, stowarzyszenia rekreacyjne, kulturalne i sportowe, kluby sportowe i inne instytucje publiczne i prywatne) umożliwiła promowanie kultury, informowanie i debatowanie na temat kontekstowych czynników ryzyka oraz praw i obowiązków obywatelskich. Realistyczne oczekiwania dotyczące partnerstwa i włączenia społecznego sprzyjały refleksji na temat potencjałów i ograniczeń dynamiki kulturowej w aktualnym kontekście społecznym. Na koniec omówiono działania zapobiegające wykluczeniu społecznemu i dające możliwości dokonywania indywidualnych, rodzinnych i grupowych interwencji.
    As mudanças estruturais e a estratificação social, num mundo em transformação acelerada, produzem consequências psicossociais e socioculturais que se expressam em mecanismos de discriminação e exclusão social, exigem a criação de mecanismos que motivem e reforcem a cultura como estratégia de inclusão social. Este estudo descreve as dinâmicas culturais para a inclusão social desenvolvidas em contexto socioeconómico vulnerável. A intervenção intersectorial, estruturada semanalmente, envolve quatro grandes temáticas: Carnaval, festa da flor, santos populares e festa das vindimas. A intervenção em parceria (governo regional, município, junta de freguesia, associações recreativas, culturais, desportivas, e outras instituições públicas e privadas), intergeracional, possibilitou promover o reforço da cultura, informar e debater os fatores de risco contextuais e prevenir o risco como direito e dever de cidadania. Expectativas realistas em relação às parcerias e à inclusão social promoveram reflexões sobre as potencialidades e limites das dinâmicas culturais no contexto social atual. Por fim, questões para a prevenção da exclusão social foram discutidas, gerando possibilidade de intervenções a nível individual, familiar e grupal.
    Źródło:
    Relacje. Studia z nauk społecznych; 2017, 4; 75-80
    2543-5124
    Pojawia się w:
    Relacje. Studia z nauk społecznych
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Seismic Performance Evaluation of Historical Case Study of Armenian Architecture Tekor Church
    Autorzy:
    Şeker, Burçin Şenol
    Özkaynak, Merve
    Powiązania:
    https://bibliotekanauki.pl/articles/27314736.pdf
    Data publikacji:
    2022
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    cultural heritage
    damage
    FEM model
    historical construction
    masonry churches
    Armenia architecture
    Tekor
    seismic vulnerability
    dziedzictwo kulturowe
    szkody
    modele MES
    budowle historyczne
    architektura Armenii
    trzęsienia ziemi
    Opis:
    Masonry churches, which are one of the cultural heritages, show the historical background, cultural and religious characteristics of the cities and material properties. Churches in the earthquake zone, which are different from each other in terms of typology and have a special importance, are at risk. The aim of this study is to examine the earthquake behavior of a church sample in Turkey and to provide a guide for structures with similar typology. The building was modeled and subjected to dynamic loads using macro modeling technique. Free vibration mode shapes were determined by modal analysis, and it was determined that these modes were mainly in the form of translation of the upper part of the structure. In the time history analysis, the stress and deformation values were determined. It has been observed that the stresses take high values at the supports and top of the main columns and in the arches connecting these columns to the side walls. It was concluded that the deformations reached their maximum values at the apex of the triangular gable walls in the upper part of the building. The results obtained are consistent with the damage the church received in past earthquakes.
    Źródło:
    Civil and Environmental Engineering Reports; 2022, 32, 2; 36--52
    2080-5187
    2450-8594
    Pojawia się w:
    Civil and Environmental Engineering Reports
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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