排序方式： 共有15条查询结果，搜索用时 453 毫秒
1.
Science & Education - In primary and secondary schools, the disciplines encompassed in “STEM”—Science, Technology, Engineering and Mathematics—have usually been studied... 相似文献
2.
Jairo Vázquez-Guerrero Ben Jones Bruno Fernández-Valdés Gerard Moras Xavi Reche Jaime Sampaio 《Journal of sports sciences》2013,31(22):2530-2537
ABSTRACTThe aims of this study were (a) to compare players’ physical demands between different playing positions in elite U18 basketball games and (b) to identify different clusters of performance. Data were collected from 94 male subjects (age: 17.4 ± 0.7 years), competing in a Euroleague Basketball Tournament. Guards covered a greater relative distance than centres and forwards (small to moderate effect). Forwards and guards had more peak accelerations, high accelerations and high decelerations than centres (moderate to large effects). A cluster analysis allowed to classify all cases into three different groups (Lower, Medium and Higher activity demands), containing 37.4%, 52.8% and 9.8% of the cases, respectively. The high accelerations, high decelerations, peak accelerations and total distance covered were the variables that most contributed to classify the players into the new groups. The percentage of cases distributed in the clusters according to playing position, game type (worst vs worst, mixed opposition, best vs best) and team were different. Centres have lower physical demands specially related with the number of accelerations and decelerations at high intensity and the peak acceleration when compared with guards. Each team has a different activity profile, that does not seem to influence the tournament outcome. 相似文献
3.
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
4.
There is a comprehensive body of scholarly work regarding the way media represent crime and how it is constructed in the media narrative as a news item. These works have often suggested that in many cases public anxieties in relation to crime levels are not justified by actual data. However, few works have examined the gathering and dissemination of crime statistics by non-specialist journalists and the way crime statistics are gathered and used in the newsroom. This article seeks to explore in a comparative manner how journalists in newsrooms access and interpret quantitative data when producing stories related to crime. In so doing, the article highlights the problems and limitations of journalists in dealing with crime statistics as a news source, while assessing statistics-related methodologies and skills used in the newsrooms across the United Kingdom when producing stories related to urban crime. 相似文献
5.
6.
Plans for a nationwide system of education at a distance in Colombia S.A. are now under way to meet growing demands for higher education and to decentralize the current university system. Prior to this decision, a feasibility project was mounted in 1973–1976 by the University of Antioquia. Code-named El Proyecto UNIDES, its goals were: - To check whether students could learn at a distance with no lowering of standards; - To identify critical logistical conditions; - To assess whether traditional university teaching methods could be renovated with systems resting on ideas from instructional technology. UNIDES involved 70 staff of varying status and function who produced teaching materials and observed and assessed around 1500 students on and off campus under three instructional conditions covering a semester's work. D group students studied at a distance self-instructional materials in mathematics, psychology, and Spanish. S1 group students studied those materials individually on campus. S2 group students studied through conventional classes. Political confrontations with non-project students, staff anxieties, administrative, production, printing, distribution, and communication difficulties, and a 50–60 per cent dropout were unexpected events observed. This yielded valuable information about critical conditions in distance-teaching for practical decision-making in the future, but made assessment difficult. In academic performance, measured by common examinations for course credits, the groups ranked: S1, D and S2. There could be no clear-cut prediction from UNIDES. It suggested students can learn at a distance with no drop in standards, perhaps better through an autonomous system. Conventional systems might profit from adopting or adapting methods and materials developed for distance teaching. 相似文献
7.
This study examined the relationships of achievement goal orientations and perceptions of the motivational climate in physical education classes among Colombian students, and tested gender and age differences in goal orientations and perceived motivational climate. Participants (1378 boys and 1615 girls, ranging in age from 9 to 18 yr) completed the Task and Ego Orientation in Sport Questionnaire (TEOSQ), and the Learning and Performance Orientations in Physical Education Classes Questionnaire (LAPOPECQ). Bivariate and canonical correlation analysis identified conceptually consistent relationships between goal orientations and perceptions of motivational climate. Boys scored higher than girls in ego orientation and in perceptions of performance orientation. Task and ego goal orientations, and perceptions of learning or performance orientations decreased with age. Data obtained indicate that the Spanish versions of the TEOSQ and the LAPOPEQ could be useful instruments for physical education teachers, helping them to identify achievement goal orientation of their students and perceptions of the motivational climate in their education classes. 相似文献
8.
9.
10.
Science & Education - For several decades there has been a broad consensus on the need to promote scientific literacy and, ultimately, to promote the full development of student competency from... 相似文献