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Wyszukujesz frazę "panel studies" wg kryterium: Wszystkie pola


Wyświetlanie 1-2 z 2
Tytuł:
Transformation Research and the Longue Durée of 1989: Combining Qualitative and Quantitative Data
Autorzy:
Brückweh, Kerstin
Zöller, Kathrin
Powiązania:
https://bibliotekanauki.pl/articles/1372796.pdf
Data publikacji:
2019-05-14
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
transformation
contemporary history
secondary analysis
history of knowledge
East Germany
school/education
panel studies
Opis:
In recent years, historians have increasingly looked at social science data in their search for sources to study the transformation period. Researchers hope that a secondary analysis of this data will expand the existing sources. This expansion promises new perspectives, while simultaneously bringing new methodological challenges to the discipline. This article deals with both: 1. It uses a history of knowledge approach to evaluate the topics and tools of transformation research. It also argues that social scientists were not only producers of knowledge but historical actors in the restructuring of the institutions of social sciences in East Germany after 1989/90. 2. With the German Socio-Economic Panel and especially the Saxonian Longitudinal Study as an example, the article refers to the content of the studies itself – in this case, the East German school as a site of life-worlds in upheaval. It concludes that the encounter of social scientists and historians is very fruitful for historians interested in the interaction of system change and everyday life. That is, the secondary analysis of qualitative and quantitative social science data compliments ‘classical’ sources of historical research by providing insights into memories and experiences at different times in the historical process.
Źródło:
Przegląd Socjologii Jakościowej; 2019, 15, 1; 72-91
1733-8069
Pojawia się w:
Przegląd Socjologii Jakościowej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Finite element studies on free vibration of laminated composite cylindrical skew panels
Autorzy:
Srinivasa, C. V.
Suresh, Y. J.
Prema Kumar, W. P.
Powiązania:
https://bibliotekanauki.pl/articles/955177.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
panel cylindryczny
laminat
wolne wibracje
element skończony
częstotliwość podstawowa
cylindrical skew panel
panel angle
skew angle
antisymmetric laminates
free vibration
finite element
fundamental frequency
Opis:
This paper presents the finite element studies on free vibration of isotropic and laminated composite cylindrical skew panels. The analysis is performed using CQUAD4 and CQUAD8 elements of MSC/NASTRAN. The effects of the panel angle, skew angle, aspect ratio and length-to-thickness-ratio on fundamental frequency of isotropic cylindrical skew panels are studied. The effects of additional parameters such as the fiber orientation angle, numbers of layers and stacking sequence on the fundamental frequency of antisymmetric composite laminates are also studied. It is found that the CQUAD8 element yields better results than the CQUAD4 element in the validation and convergence studies. The CQUAD8 element is employed for the remaining part of the studies. The fundamental frequencies are found to increase with the panel angle and skew angle. When the number of layers in the laminate is large, the variation of the fundamental frequency with the number of layers is not appreciable. The boundary conditions are found to have a significant influence on the fundamental frequency.
Źródło:
International Journal of Applied Mechanics and Engineering; 2014, 19, 1; 165-180
1734-4492
2353-9003
Pojawia się w:
International Journal of Applied Mechanics and Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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