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41.
Ohne Zusammenfassung 相似文献
42.
Gläser Jochen Ash Mitchell Buenstorf Guido Hopf David Hubenschmid Lara Janßen Melike Laudel Grit Schimank Uwe Stoll Marlene Wilholt Torsten Zechlin Lothar Lieb Klaus 《Minerva》2022,60(1):105-138
Minerva - The independence of research is a key strategic issue of modern societies. Dealing with it appropriately poses legal, economic, political, social and cultural problems for society, which... 相似文献
43.
Anne Milatz Michael Glüer Elena Harwardt-Heinecke Gregor Kappler Lieselotte Ahnert 《Early childhood research quarterly》2014
The Student–Teacher Relationship Scale (STRS) is widely used for research in kindergarten and school. The increasing number of applications inside and outside of the U.S. stresses the need to investigate STRS properties, accordingly. The present study used the STRS in German-speaking countries, examining whether (a) the original factor structure is appropriate for a German version, (b) whether applications of a German STRS are invariant across contexts (kindergarten, first and second grade) as well as gender, and (c) whether construct and criterion validity are met. The original STRS was translated into German and filled out by 368 kindergarten and 503 elementary school teachers in Germany and Austria. Observations in kindergartens, student reports in schools, and teacher reports of students’ characteristics served as validity criteria. Results of confirmatory factor analyses (CFAs) did not confirm the original STRS factor structure. Subsequent exploratory factor analyses on training samples resulted in significant item reductions, followed by further CFAs on validation samples. The bootstrapped results yielded an adjusted three-factor model with subscales indicating satisfying alphas and invariance across context and gender. Construct and criterion validity were met for all subscales of the German STRS based on various criteria from both, observations and reports. 相似文献
44.
We are proposing a feedback model of news processing, assuming that news reception is guided by media input as well as by existing cognitive structures. However, these structures are in turn shaped by former media coverage. In our study we examine viewers’ processing of TV news, comparing objective news content (content analysis) to subjective meaning of news stories (viewer interviews). Results show that viewers interpret information about new events in the context of past events, themselves mainly a reflection of former media coverage. 相似文献
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Zusammenfassung. Die Bereitstellung eines pr?zisen, effizienten und m?glichst vollst?ndigen Zugriffs auf aktuelle Informationen im Internet
ist eine grundlegende Voraussetzung für die Weiterentwicklung des elektronischen Handels. Dieser Beitrag zeigt, wie themenspezifische
Suchwerkzeuge mit Hilfe mobiler Programme eine solche Bereitstellung leisten k?nnen. Der vorgestellte Ansatz wird durch messdaten-basierte
Simulationen sowie anhand einer Fallstudie evaluiert.
Eingegangen am 15. Dezember 1999 / Angenommen am 10. April 2000 相似文献
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Hans C. von Lieres und Wilkau Gareth Irwin Neil E. Bezodis Scott Simpson Ian N. Bezodis 《Sports biomechanics / International Society of Biomechanics in Sports》2020,19(2):141-156
AbstractThe aim of this study was to investigate spatiotemporal and kinematic changes between the initial acceleration, transition and maximum velocity phases of a sprint. Sagittal plane kinematics from five experienced sprinters performing 50-m maximal sprints were collected using six HD-video cameras. Following manual digitising, spatiotemporal and kinematic variables at touchdown and toe-off were calculated. The start and end of the transition phase were identified using the step-to-step changes in centre of mass height and segment angles. Mean step-to-step changes of spatiotemporal and kinematic variables during each phase were calculated. Firstly, the study showed that if sufficient trials are available, step-to-step changes in shank and trunk angles might provide an appropriate measure to detect sprint phases in applied settings. However, given that changes in centre of mass height represent a more holistic measure, this was used to sub-divide the sprints into separate phases. Secondly, during the initial acceleration phase large step-to-step changes in touchdown kinematics were observed compared to the transition phase. At toe-off, step-to-step kinematic changes were consistent across the initial acceleration and transition phases before plateauing during the maximal velocity phase. These results provide coaches and practitioners with valuable insights into key differences between phases in maximal sprinting. 相似文献
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Ohne Zusammenfassung 相似文献
50.
Gregor A. Ramsey 《International Journal of Science Education》2013,35(2):235-237
Thirty 14‐15‐year‐old pupils were taught about the effect of temperature and pressure on a gaseous reaction at equilibrium. Two problems were then given to the pupils and a word association test on a small number of carefully chosen stimulus words was administered in the context of the problems. The pupils were finally interviewed about what they had done in the tests. The results of all of the tests were analysed and compared for evidence of perception and strategy. Various strategies were found to have been used by the pupils: one based on the formally correct perception of Le Chatelier's rule, one based on a perception in which the speed of a reaction is the factor that governs position of equilibrium (this was the major incorrect strategy), one that uses spurious analogies with more familiar factors (such as ‘catalyst') and one that reflects only superficial learning with no evidence of Le Chatelier's principle. Comparisons with the classroom tests and the interview data revealed that about 60% of the word association test results produced responses that were criterial for the problem‐solving strategies adopted by the pupils, both correct and incorrect. The results show that this type of word association offers a means of unobtrusive, formative testing which, with experience, could be used to anticipate learning problems in science lessons. 相似文献