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441.
442.
Mota J Silva P Santos MP Ribeiro JC Oliveira J Duarte JA 《Journal of sports sciences》2005,23(3):269-275
The aims of this study were: (1) to observe participation in moderate-to-vigorous physical activity (MVPA) during school recess periods; (2) to determine the relative importance of physical activity during recesses to overall daily physical activity; and (3) to examine differences in physical activity between the sexes during unstructured recess periods. The participants were 22 school children (10 boys, 12 girls) aged 8 - 10 years (mean = 8.9, s = 0.7) in the third and fourth grades. Daily totals for the physical activity variables were calculated by summing the values for each hour of 14 h of physical activity measurements (08:00 to 22:00 h). Recess times (minutes) were as follows: morning 10:30 to 11:00 h and afternoon 15:30 to 16:00 h. We did not differences between boys and girls in daily total accelerometer counts or the overall time spent in MVPA. However, girls were significantly (P < 0.05) more involved (38%) in MVPA during recess time than boys (31%). Participation in MVPA during recess contributes significantly more (P < 0.05) for girls (19%) than boys (15%) to the total amount of physical activity suggested by international health-related physical activity guidelines, while the percentage of time engaged in MVPA during recess time at school accounts for a small amount of the daily MVPA (6% for boys and 8% for girls). The results of this study suggest that school recess time is an important setting to promote MVPA and contributes to daily physical activity in young children, especially in girls. 相似文献
443.
444.
Age-publishing profiles are estimated for four fields of science using data from the 1977 Survey of Doctorate Recipients. The five measures of publishing activity used allow for analysis of the sensitivity of the age-publishing relationship to output measure. Results are presented separately for graduate faculty and faculty at nongraduate departments. Although age is found to be a fairly weak predictor of performance, in physics and earth science older scientists publish less than their youngest peers and in physiology and biochemistry older scientists publish less than their middle-aged colleagues. Given the time frame of the data, the results suggest that the graying of America's scientific community was accompanied with slowed rates of research in higher education. 相似文献
445.
This article is a case study that aimed at understanding the dynamics of two complementary communities involved in a distance education graduate program: one community of practice formed by the instructors and instructional developers, who designed and developed the program, and another created by the students and instructor in one of the online courses. The relationship between both communities and the evolution that occurred within the online course are analyzed. Emergent themes are discussed and recommendations are made for similar contexts and communities. 相似文献
446.
Paula Jones Colin J. Trier Jonathan P. Richards 《International Journal of Educational Research》2008,47(6):341-350
This paper explores the perceptions of academics and students towards embedding Education for Sustainable Development (ESD) into undergraduate degree programmes in the School for Earth, Ocean and Environmental Science (SEOES) at the University of Plymouth. The main purpose of the research was to identify current ESD related teaching and learning in a science-based undergraduate programme and the opportunities for, and barriers to, further extensions of ESD. The results indicate that there is general support for the embedding of ESD in the curriculum, but there is considerable uncertainty expressed by lecturers concerning how this can best be done. There is a general concern that additional embedding into the degree programme might lead to reductions in the amount of core subject matter being taught. The programme and ESD agendas are to an extent seen by lecturers as conflicting. ESD is viewed mainly in terms of curriculum content as opposed to the pedagogy employed. 相似文献
447.
Two questions were investigated. First, are children with reading problems in first grade more likely to experience behavior problems in third grade? Second, are children with behavior problems in first grade more likely to experience reading problems in third grade? The authors explored both questions by using multilevel logistic regression modeling to analyze data from the Early Childhood Longitudinal Study-Kindergarten Class (ECLS-K). After statistically controlling for a wide range of potential confounds, they found that children with reading problems in first grade were significantly more likely to display poor task engagement, poor self-control, externalizing behavior problems, and internalizing behavior problems in third grade. They also found that children displaying poor task engagement in first grade were more likely to experience reading problems in third grade. Collectively, these findings suggest that the most effective types of interventions are likely to be those that target problems with reading and task-focused behaviors simultaneously. 相似文献
448.
This study examined the role of motivational or attitudinal factors, such as achievement beliefs and behaviours, in learning to read before receiving formal instruction. A total of 200 Finnish children were examined at ages 5 and 6½. Half of them (n = 107) had a familial risk for dyslexia. The results showed that those children who were verbally skilful at age 5 showed a higher level of task-focused behaviour at age 6½. This task-focused behaviour then contributed to spontaneous reading acquisition. The impact of previous verbal skills on spontaneous reading acquisition was mediated in part by achievement behaviour. 相似文献
449.
The integration of environmental principles into other policies is perceived as essential in order to combat environmental problems as efficiently as possible. Environmental policy integration in Finnish technology policies is assessed empirically by focusing on technological R&D support at all levels, from policy strategies to project funding decisions. The actors making and implementing technology policies have grasped the idea of environmental protection and environmental issues have been identified especially at the strategy level and in some technology programmes. However, the integration is not overarching and no assessment of environmental impacts is required in funding applications. 相似文献
450.
Reed Nick Leiman Tania Palade Paula Martens Marieke Kester Leon 《Ethics and Information Technology》2021,23(4):777-789
Ethics and Information Technology - In this paper, we explore and describe what is needed to allow connected and automated vehicles (CAVs) to break traffic rules in order to minimise road safety... 相似文献