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51.
Erling Roland 《Educational research; a review for teachers and all concerned with progress in education》2013,55(1):55-67
Bullies, victims and pupils neutral to bullyingwere compared on depressive symptoms and suicidal thoughts.The sample included 2,088 Norwegian boys and girls in grade 8. The results revealed that both bullies and victims had significantly higher mean scores than neutral pupils on both depressive symptoms and suicidal thoughts. Victims had a significantly higher mean score on depressive thoughts than the bullies. On suicidal thoughts, the mean score for bullies was above that of the victims, but this differencewas not significant. Girls had significantly higher mean scores than boys on both depressive symptoms and suicidal thoughts. This was the case for all pupils, and for victims, bullies and the neutral pupils. Questions of causality between depressive symptoms, suicidal thoughts and involvement in bullying are discussed and research on this issue is suggested. 相似文献
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This paper considers street performance, or busking,focusing on differences between performance in thisenvironment compared with the standard concertsetting. First, in contrast with a set, known ticketprice, the price of street performance isendogenously determined. Second, busking generallyinvolves a joint product: music and charity, wherecharity is produced internally by the audience andhas as its principal input the price paid for music.We show that these facts call into question somegeneral conclusions of conventional public financemodels, which suggest that the major efficiency problemwith busking is its inability to preventfreeriding behavior, and that freeriding, while efficient at the individuallevel, is inefficient at the societal level. In contrast, we argue in thispaper that busking, with freeriding and all, is not unambiguously inferior toconcert hall performance in terms of efficiency. 相似文献
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Roland van den Tillaar Paul Gamble 《Sports biomechanics / International Society of Biomechanics in Sports》2019,18(5):539-552
This investigation examined step-by-step kinematics of sprint running acceleration. Using a randomised counterbalanced approach, 37 female team handball players (age 17.8 ± 1.6 years, body mass 69.6 ± 9.1 kg, height 1.74 ± 0.06 m) performed resisted, assisted and unloaded 20-m sprints within a single session. 20-m sprint times and step velocity, as well as step length, step frequency, contact and flight times of each step were evaluated for each condition with a laser gun and an infrared mat. Almost all measured parameters were altered for each step under the resisted and assisted sprint conditions (η2 ≥ 0.28). The exception was step frequency, which did not differ between assisted and normal sprints. Contact time, flight time and step frequency at almost each step were different between ‘fast’ vs. ‘slow’ sub-groups (η2 ≥ 0.22). Nevertheless overall both groups responded similarly to the respective sprint conditions. No significant differences in step length were observed between groups for the respective condition. It is possible that continued exposure to assisted sprinting might allow the female team-sports players studied to adapt their coordination to the ‘over-speed’ condition and increase step frequency. It is notable that step-by-step kinematics in these sprints were easy to obtain using relatively inexpensive equipment with possibilities of direct feedback. 相似文献
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“健康儿童?健康社会”（HCSC）是在欧盟体育健康发展准则下,构建由家庭、学校、体育组织、地区政府等诸多部门组成的复合体系,通过降低BMI值减少超重,改善运动能力,进而提高个人生活质量。主要通过对HCSC项目的历史发展进行论述,对HCSC的核心理念、组织构架、运作模式3方面进行剖析,并以中国实验学校为例,对实验干预前后学生的身体健康指标进行对比分析,旨为国内相关领域研究抛砖引玉。 相似文献
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This study investigated the contents of children's attitudes toward the elderly and compared these attitudes with the children's attitudes toward young people. The Children's Views on Aging (CVOA) questionnaire was administered to 256 latency‐aged (8‐10 year‐old) children. The children were white and black, male and female, and came from both rural and urban backgrounds. The children's responses to the CVOA were analyzed quantitatively using chi‐square and t‐tests. The results showed that children had some negative perceptions of the aging process, but positive views of the older person. Comparison of the children's attitudes toward older people and young people showed that the children's attitudes were more negative toward older people in the potency dimension of attitude but more positive toward older people in the evaluative dimension. The findings suggest that children's attitudes toward aging are complex and diverse. Important implications for educational practice are discussed. This study formed part of Ronald Marks’ doctoral dissertation submitted to the Graduate Faculty of the School of Social Work, University of Pittsburgh, 1980. 相似文献
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