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601.
ABSTRACT Youth coaches play a crucial role in the development of young athletes and their physical, psychological and social well-being. Therefore, it is important to foster and develop youth coaches’ ability to govern and act effectively in their coaching practices. Sports organisations facilitate the development of youth coaches through formal coach education. However, research has shown this to be with limited effect. The purpose of this action research study was to involve youth coaches in developing a new and more effective coach education practice. The coaches developed their practices through both dialogue and reflection with each other. A shift in the mindset of the coaches resulted in a more reflective and analytical approach in their way of thinking and talking about their practices. The most effective tools for improving the coach educational practice was the active management of the relations between the participating coaches and assisting the coaches’ reflection and dialogue through the use of scaffolding. In order to engage coaches in the educational practice, alignment between coaches’ expectations and both course content and form was crucial. These findings provide further insight into how coaches can develop their practices and how sports organisations can develop more effective coach education practices. 相似文献
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603.
Christian Hviid Mortensen Maja Rudloff Vitus Vestergaard 《Curator: The Museum Journal》2014,57(3):329-346
In a time with a heightened focus on how museum architecture and exhibition design shapes the museum visit, the entrance space of museums, the museum lobby, is remarkably absent from the museum literature and research. Still, the museum lobby is the first encounter visitors have with the museum and the last impression that they take home and share with others. This article analyzes museum lobbies as communication spaces in order to identify the different functions afforded by such spaces. In an explorative study of five Danish museum lobbies, we offer a preliminary categorization of these functions that can be compared at a general level. Concrete examples will be used to discuss general issues such as the adaptive borders of lobby spaces and the counteracting effects of design. We suggest that the preliminary categorization provided here can form a foundation for further studies resulting in practical suggestions for design improvements. 相似文献
604.
In economics the Research Papers in Economics (RePEc) network has become an essential source for the gathering and the spread of both existing and new economic research. Furthermore, it is currently the largest bibliometric database in economic sciences containing 33 different indicators for more than 30,000 economists. Based on this bibliographic information RePEc calculates well-known rankings for authors and academic institutions. We provide some cautionary remarks concerning the interpretation of some provided bibliometric measures in RePEc. Moreover, we show how individual and aggregated rankings can be biased due to the employed ranking methodology. In order to select key indicators describing and assessing research performance of scientist, we propose to apply principal component analysis in this data-rich environment. This approach allows us to assign weights to each indicator prior to aggregation. We illustrate the approach by providing a new overall ranking of economists based on RePEc data. 相似文献
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606.
Xiang Peng Weihao Wang Men Xia Hui Chen A R Ravishankara Qinyi Li Alfonso Saiz-Lopez Pengfei Liu Fei Zhang Chenglong Zhang Likun Xue Xinfeng Wang Christian George Jinhe Wang Yujing Mu Jianmin Chen Tao Wang 《国家科学评论(英文版)》2021,8(7):94-104
Halogen atoms affect the budget of ozone and the fate of pollutants such as hydrocarbons and mercury. Yet their sources and significances in polluted continental regions are poorly understood. Here we report the observation of unprecedented levels (averaging at 60 parts per trillion) of bromine chloride (BrCl) at a mid-latitude site in North China during winter. Widespread coal burning in rural households and a photo-assisted process were the primary source of BrCl and other bromine gases. BrCl contributed about 55% of both bromine and chlorine atoms. The halogen atoms increased the abundance of ‘conventional’ tropospheric oxidants (OH, HO2 and RO2) by 26%–73%, and enhanced oxidation of hydrocarbon by nearly a factor of two and the net ozone production by 55%. Our study reveals the significant role of reactive halogen in winter atmospheric chemistry and the deterioration of air quality in continental regions where uncontrolled coal combustion is prevalent. 相似文献
607.
Tasia Brafford Beth Harn Ben Clarke Christian T. Doabler Derek Kosty Kathleen Scalise 《Learning disabilities research & practice》2023,38(1):5-14
Assessing implementation allows for a better understanding of an intervention's effects and the mechanisms that influence its impact. Two main areas of implementation are (a) the quality with which an intervention is delivered and (b) instructors’ adherence to the programmed intervention. The current study used data from a kindergarten mathematics intervention program to (a) examine if and how treatment adherence was associated with implementation quality and (b) explore implementation measures’ relation to student mathematics outcomes. Results indicated high implementation scores across time for both adherence and quality. Neither treatment adherence nor implementation quality was found to relate to a general outcome measure of student mathematics achievement; however, both were similarly related to the curricular-aligned measure. 相似文献
608.
Xingna Qin Lydia Laninga-Wijnen Christian Steglich Yunyun Zhang Ping Ren René Veenstra 《Child development》2023,94(6):1531-1549
This study examined whether having vulnerable friends helps or hurts victimized and depressed (i.e., vulnerable) adolescents and whether this depends on classroom supportive norms. Students (n = 1461, 46.7% girls, 93.4% Han nationality) were surveyed four times from seventh and eighth grade (Mage = 13 years) in 2015 and 2016 in Central China. Longitudinal social network analyses indicated that having vulnerable friends can both hurt and help vulnerable adolescents. Depressed adolescents with depressed friends increased in victimization over time. Victimized adolescents with victimized friends increased in victimization but decreased in depressive symptoms. These processes were most likely in classrooms with high supportive norms. Having friends and a supportive classroom may hurt vulnerable adolescents' social position but help victims' emotional development. 相似文献