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61.
European Journal of Psychology of Education - In Switzerland, as elsewhere, issues dealing with cultural diversity raise major challenges in education. At present, little is known about how...  相似文献   
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ABSTRACT

We aimed to determine key biomechanical parameters explaining age-related jumping performance differences in youth elite female soccer players. Multiple biomechanical parameters from countermovement (CMJ) squat (SJ) and drop (DJ) jump testing of elite female soccer players (n = 60) within the same national training centre were analysed across ages 9-11y, 12-14y and 15-19y. Effects of age group and jump type on jump height were found, with the older jumping higher than the younger groups in all jumps (P < 0.05). For DJ, higher reactive strength index was found for older, compared to each younger group (P < 0.001). For CMJ and SJ, peak power was the most decisive characteristic, with significant differences between each group for absolute peak power (P < 0.0001) and body-weight-normalised peak power in CMJ (57 ± 7W/kg, 50 ± 7W/kg, 44.7 ± 5.5W/kg; P < 0.05) and between the older and each younger group in SJ (56.7 ± 7.1W/kg, 48.9 ± 7.1W/kg, 44.6 ± 6W/kg; P < 0.01). Age-related differences in jumping performance in youth elite female soccer players appear to be due to power production during standing jumps and by the ability to jump with shorter ground contact times during reactive jumps.  相似文献   
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This study charts reports of nasty or threatening text and email messages received by students in academic years 7 and 8 (11–13 years of age) attending 13 secondary schools in the North of England between 2002 and 2006. Annual surveys were undertaken on behalf of the local education authority to monitor bullying. Results indicated that, over five years, the number of pupils receiving one or more nasty or threatening text messages or emails increased significantly, particularly among girls. However, receipt of frequent nasty or threatening text and email messages remained relatively stable. For boys, being a victim of direct‐physical bullying was associated with receiving nasty or threatening text and email messages; for girls it was being unpopular among peers. Boys received more hate‐related messages and girls were primarily the victims of name‐calling. Findings are discussed with respect to theoretical and policy developments, and recommendations for future research are offered.  相似文献   
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This study investigated metamemory knowledge related to a professional task and the relationships between metamemory knowledge and memory performance in a simulated professional task, which was a beverage-service job with memory constraints changes. Metamemory knowledge was assessed by interviewing student waiters about hypothetical recall tasks concerning lists of beverages. They then carried out a simulated beverage-service task, including a first paired-associate recall (beverage-customer), then a global recall (order to the bartender), followed by a second paired-associate recall (beverage-customer). Memory constraints were manipulated with table size and perceptive cues. Results revealed that in metamemory knowledge, task-strategy, and strategy were the only variables that were related. Metamemory knowledge produced an effect on all memory performance, whatever the constraints were. The implications of these findings for professional training are discussed in terms of strategy instruction for enhancing professional performance when memory demands change in the work environment.  相似文献   
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Reading and Writing - L1 and L2 writers attend to different aspects of the formulation subprocess of writing. L2 writers devote more time and attention to low-level aspects such as grammar...  相似文献   
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From the late 1920s, all radio broadcasting in the United Kingdom was undertaken by a public sector broadcaster—the British Broadcasting Corporation (BBC). Television was also the exclusive preserve of the BBC until the mid-1950s, when advertiser-supported commercial stations came into existence. This form of competition for audiences, but not for finance, between two broadcasting sectors—called by some a 'comfortable duopoly'—persisted until the late 1980s when the government permitted competitive entry by cable and satellite operators, introduced competition for advertising revenue between terrestrial stations, and placed commercial television broadcasting on a more competitive footing by introducing tendering for franchises. As these changes have occurred, the BBC has maintained its traditional system of regulation and has continued to operate under a Royal Charter. Although the expiry of the current Charter at the end of 1996 has provoked a debate about the role of the BBC, the government has stated its intention to renew the Charter for another 10 years. It seems likely that, until the year 2002 at least, the current system of regulating and financing public Service broadcasting in the United Kingdom will remain intact. However, the proliferation of channels represents a threat to the BBC's audience base. There may also be difficulties in combining within the same organization a public service mission and highly commercial activities, undertaken in a very competitive world market.  相似文献   
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