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排序方式: 共有268条查询结果,搜索用时 31 毫秒
61.
Cristina Cadenas-Sanchez Jairo H. Migueles Irene Esteban-Cornejo Jose Mora-Gonzalez Pontus Henriksson María Rodriguez-Ayllon 《Journal of sports sciences》2020,38(7):731-740
ABSTRACTThe aim of this study was to examine the associations of fitness and physical activity with academic achievement in children with overweight/obesity. A total of 106 (10.0 ± 1.1y, 61 boys) children participated. The fitness components were assessed by field and laboratory-based tests. Physical activity was measured via accelerometry. The academic achievement was assessed by a standardised test and school-grades. Field-based cardiorespiratory fitness was associated with language skills (ß-standardised- ranging from 0.281 to 0.365, p < 0.01). The field-based muscular strength was associated with grade point average, natural and social sciences, and foreign language (ß = 0.280–0.326, all p ≤ 0.01). Speed-agility was associated with some language-related skills (ß = 0.325–0.393, all p ≤ 0.01). The laboratory-based muscular strength also showed an association with mathematics skills (ß = 0.251–0.306, all p ≤ 0.01). Physical activity did not show significant association with academic achievement (p > 0.01). Overall, the significant associations observed for muscular strength and speed/agility were attenuated and disappeared in many cases after additional adjustments for body mass index and cardiorespiratory fitness, indicating that these associations are inter-dependent. Our study contributes by indicating that other fitness components apart from cardiorespiratory fitness, such as muscular strength and speed-agility, are positively associated with academic achievement. However, these associations appear to be dependent on body mass index and cardiorespiratory fitness. 相似文献
62.
ABSTRACTTwo historic house museums, a municipal art gallery, and a provincial archive have had comprehensive risk and option assessments done by the Canadian Conservation Institute. For each institution, an average of 60 options addressing 40 risks was analyzed in terms of risk reduction, cost, and cost-effectiveness. A meta-analysis found that cost-effectiveness follows a strong economy of scale within each institution. By estimating valuation of each collection, cost-effectiveness was converted into benefit–cost ratio of dollar spent per dollar value saved and was found not to follow an economy of scale between small and large institutions. Optimization software was applied to see if precise maximization of risk reduction gave significantly different recommendations than those in the original reports which relied on the Pareto rule of addressing the largest risks first. 相似文献
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64.
Irene M. Pepperberg 《Learning & behavior》1987,15(4):423-432
An African Grey parrot, previously taught to use vocal English labels to discriminate more than 80 different objects and to respond to questions concerning categorical concepts of color and shape, was trained and tested on relational concepts ofsame anddifferent. The subject, Alex, replied with the correct English categorical label (“color,” “shape,” or “mah-mah” [matter]) when asked “What’s same?” or “What’s different?” about pairs of objects that varied with respect to any combination of attributes. His accuracy was 69.7%–76.6% for pairs of familiar objects not used in training and 82.3%–85% for pairs involving objects whose combinations of colors, shapes, and materials were unfamiliar. Additional trials demonstrated that his responses were based upon the question being posed as well as the attributes of the objects. These findings are discussed in terms of his comprehension of the categories of color, shape, and material and as evidence of his competence in an exceptional (non-species-specific) communication code. 相似文献
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66.
"同学聚会"——多么令人兴奋的字眼,有多少人曾经为了那个可以一叙旧情的日子高兴得睡不着觉?但是,也有越来越多的人表示,离校园生活越远,"同学聚会"也越发变味,因为聚会变得越来越像是一个炫富、晒幸福、比成就的场合,日子过得滋润的人会 相似文献
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Jörg Schorer Irene Faber Till Koopmann Dirk Büsch Joseph Baker 《Journal of sports sciences》2020,38(19):2208-2214
ABSTRACT Despite the importance of technique and tactics for athlete performance, there has been surprisingly little research on the value of these skills in talent identification and development. This study investigated the relationship between coaches’ early notational analyses of female youth handball players and the long-term success of these athletes. Participants included sixty-eight female handball players involved in a talent selection camp in Germany when they were between 12 and 14 years of age (mean = 14.42, SD = 0.42). All subsequently ended up as non-, semi- or professional adult players. During the initial selection camp, participants were evaluated on a range of quantitative and qualitative measures of technical and tactical skill. Results indicated significant differences between the groups, but only for the number of actions taken, not for the quality of those actions. While this seems counterintuitive, it may reflect the likelihood that more skilled and/or talented players take more actions. Further work is necessary to explore the validity and implications of these findings. 相似文献
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Sarah J. Stein Kerry Shephard Irene Harris 《British journal of educational technology : journal of the Council for Educational Technology》2011,42(1):145-165
The conceptions an individual holds about a phenomenon can influence and determine associated behaviours and perspectives. Consequently, they have a bearing upon how learning about a phenomenon is undertaken and how that phenomenon is experienced and applied in context. A phenomenographic research approach was used to gather the expressed experiences of e‐learning and professional development for e‐learning held by teachers and support staff from institutions across New Zealand. Five conceptions of e‐learning (as tool and equipment; as a facilitator of interaction; as learning; as a reduction in distance; and as a collaborative enterprise) and four conceptions of professional development for e‐learning (as training; as opening up possibilities; as collaboration; and as relevant and purposeful) were discovered. In this report, we discuss the conceptions, and show how they are interrelated through outcome space. Implications for the professional development of tertiary teachers and teaching support staff are outlined. The study provides some insights for individuals, institutions and those responsible for planning and implementing professional development programmes to help them to support the development and progress of e‐learning in appropriate and rewarding directions. 相似文献