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排序方式: 共有98条查询结果,搜索用时 15 毫秒
41.
The number of students entering higher education started to increase significantly in the mid-1960s. This sharp growth has gone together with diversification in the social background of those attending, creation of new tracks (mainly in technology) and, more recently, a number of pedagogical innovations. Consequently, higher education students in the 1990s have little in common with those described by Pierre Bourdieu and Jean-Claude Passeron in Les héritiers, published in 1964: they are not just young bourgeois whose university career confirms ex-post the social position of his or her family. The relative democratization of access to higher education has allowed young people from other social classes to continue their studies after the baccalauréat. However, this democratization has also created new problems for higher education institutions. They must make financial, organizational and pedagogical adaptation to mass schooling. Higher education students also confront new problems in adapting to such demands of university work as autonomy and initiative. Students' living conditions have also changed: while remaining economically dependent on their parents, they enjoy, especially in the provinces, considerable freedom in the running of their personal lives. 相似文献
42.
Reliability of unipodal and bipodal counter movement jump landings in a recreational male population
Cédric Schwartz Bénédicte Forthomme Julien Paulus Jean-François Kaux Olivier Brüls Vincent Denoël 《European Journal of Sport Science》2017,17(9):1143-1152
Movement patterns during landing have been suggested to be related to injury risk. The purpose of this study was to determine the inter-session reliability of kinematic variables and ground reaction forces during landing in a population of male recreational athletes after a counter movement jump. Both unipodal and bipodal landings were evaluated. Furthermore, the possibility to improve landing reliability with a verbal instruction was also studied. Twenty-four male volunteers with no history of lower extremity trauma were randomly assigned to two groups (with and without verbal landing instruction). An optoelectronic 3D system and force plates were used to measure the lower limb joint angles and the ground reaction forces during landing. Intraclass correlation values show moderate to excellent inter-session reliability for the bipodal task (ICC average: 0.80, range: 0.46–0.97) and poor to excellent reliability for the unipodal task (ICC average: >0.75, range: 0.20–0.95). However, large standard errors of measurement values at the ankle joint at impact (27.6?±?11.5°) and for the vertical ground reaction forces (394?±?1091 N) show that some variables may not be usable in practice. The verbal instruction had a negative effect on the reliability of unipodal landing but improved the reliability of bipodal landing. These findings show that the reliability of a landing task is influenced by its motor complexity as well as the instruction given to the subject. 相似文献
43.
44.
The purpose of this study was to determine the effect of triathlon training using multiple, short cycle-run sequences (multicycle-run training) on cycle-run performance. Twelve competitive triathletes, randomized into two groups, underwent multicycle-run training or normal training for 6 weeks. During this period, baseline training remained the same for both groups, and only the high-intensity component differed. The differentiated exercises were performed at or above 100% maximal aerobic velocity. The improvements in overall cycle-run performance were similar (3.3 +/- 1.4 % and 6.1 +/- 1.7% rise in Performance in multicycle-run and normal training, respectively). However, the improvement in performance was significantly greater for the multicycle-run training (-11.2 +/- 6.8 s versus -1.2 +/- 7. 7 s for multicycle-run training and normal training, respectively) during both the cycle-run change and the first 333-m lap, which together are termed the cycle-run transition. We concluded that 6 weeks of multicycle-run training did not induce greater improvement in cycle-run performance than did normal training in competitive triathletes. However, it did induce significant improvement in the cycle-run transition. This finding indicates that multicycle-run training may help competitive triathletes to develop greater skill and better physiological adaptations during this critical transition period of the triathlon race. 相似文献
45.
Ilaria Bordino Mounia Lalmas Yelena Mejova Olivier Van Laere 《Information Retrieval》2016,19(5):447-486
Search engines are increasingly going beyond the pure relevance of search results to entertain users with information items that are interesting and even surprising, albeit sometimes not fully related to their search intent. In this paper, we study this serendipitous search space in the context of entity search, which has recently emerged as a powerful paradigm for building semantically rich answers. Specifically, our work proposes to enhance an explorative search system that represents a large sample of Yahoo Answers as an entity network, with a result structuring that goes beyond ranked lists, using composite entity retrieval, which requires a bundling of the results. We propose and compare six bundling methods, which exploit topical categories, entity specializations, and sentiment, and go beyond simple entity clustering. Two large-scale crowd-sourced studies show that users find a bundled organization—especially based on the topical categories of the query entity—to be better at revealing the most useful results, as well as at organizing the results, helping to discover novel and interesting information, and promoting exploration. Finally, a third study of 30 simulated search tasks reveals the bundled search experience to be less frustrating and more rewarding, with more users willing to recommend it to others. 相似文献
46.
Olivier Chanel Louis-André Gérard-Varet Victor Ginsburgh 《Journal of Cultural Economics》1996,20(1):1-24
We argue that for the case of heterogeneous commodities with infrequent tradings, such as paintings, it is relevant to base a price index on hedonic regressions using all sales and not resales only. To support this conclusion we construct a price index for paintings by Impressionists and their followers and compare the various estimators using bootstrapping techniques. 相似文献
47.
Alain Brechbühl Annemarie Schumacher Dimech Olivier N. Schmid Roland Seiler 《Sport in Society》2017,20(7):861-879
Despite a large body of literature about fan violence issues, research investigating perceptions and dynamics in potentially violent situations, called critical incidents (CIs), is missing. This qualitative study examined the perceptions and dynamics of CIs involving ultra football fans. Fifty-nine semi-structured interviews with individuals (fans, police officers or security employees) involved in eight CIs were conducted and analysed using Interpretative Phenomenological Analysis. The assessment of legitimacy of an out-group’s actions strongly influenced the perception of a CI, which is in line with the Elaborated Social Identity Model. Informative intergroup communication about the own intentions seemed to increase perception of legitimacy, while arrests of fans due to pyrotechnics were perceived by fans as illegitimate. The local fan culture, e.g. the fans’ use of pyrotechnics for their support, is relevant for the understanding of this assessment of legitimacy. 相似文献
48.
Paulette Rozencwajg Olivier Schaeffer Virginie Lefebvre 《Learning and individual differences》2010,20(5):452-458
The main objective of this study was to examine how quantitative knowledge (Gq in the CHC model) and processing speed (Gs in the CHC model) affect scores on the WAIS-III Arithmetic Subtest (Wechsler, 2000) with aging. Two age groups were compared: 30 young adults and 25 elderly adults. For both age groups, Gq was an important predictor of Arithmetic score variance (R² = 48% and R² = 45%, respectively). However, in line with Salthouse, the results showed that processing speed predicted Arithmetic scores only for the older adults, not for the younger ones (additional 9% of the variance for the elderly vs. 1% of the variance for the young adults). These results can clarify the ambiguous evolution of Arithmetic scores with aging: Arithmetic performance with aging seems to follow an intermediate path between Gc and Gf. This suggests that both Gq and Gs have an impact on Arithmetic in aging. 相似文献
49.
Gabrielle Richard Olivier Vallerand Marie-Pier Petit Amélie Charbonneau 《The Educational forum》2015,79(4):421-435
AbstractTo fight homophobia in schools in Québec, many teachers rely on community organizations such as the Groupe de Recherche et d’Intervention Sociale (Research and Social Intervention Group) to address sexual diversity in class. This article documents major outcomes of these workshops as seen by students. Students identified topics related to sexuality and gender inversion as controversial, especially when involving men. The authors present how GRIS leaders decided to adapt intervention practices following such findings. 相似文献
50.
Olivier Bégin-Caouette 《Prospects》2012,42(1):91-112
Through a case study of Québec??s general and vocational colleges (cégeps), this article analyzes the role that institutions play in internationalizing the in-service training they provide to their teachers, and explains how partnerships with educational institutions in developing countries contribute to this process. Data from a questionnaire completed by 39 cégeps show that cégeps sustain internationalized in-service teacher training through teacher mobility, international cooperation, and training activities. Teacher mobility and international cooperation support efforts to establish partnerships with foreign institutions. The relationships that cégeps have with developing countries are changing: international cooperation, associated with a ??selling?? relationship, is decreasing, while teacher mobility, associated with a ??gelling?? approach, is increasing. Finally, the consistency between cégep activities and the government??s strategies is explained by considering the community of interest composed of cégeps, the government of Québec, and Cégep International. 相似文献