首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   112篇
  免费   4篇
教育   78篇
科学研究   9篇
各国文化   1篇
体育   22篇
信息传播   6篇
  2022年   1篇
  2021年   5篇
  2020年   3篇
  2019年   2篇
  2018年   11篇
  2017年   11篇
  2016年   2篇
  2015年   2篇
  2014年   6篇
  2013年   25篇
  2012年   3篇
  2011年   8篇
  2010年   2篇
  2009年   3篇
  2008年   1篇
  2007年   2篇
  2006年   4篇
  2005年   1篇
  2004年   3篇
  2003年   1篇
  2002年   3篇
  1998年   1篇
  1997年   1篇
  1996年   1篇
  1994年   2篇
  1987年   1篇
  1983年   1篇
  1981年   2篇
  1980年   1篇
  1968年   1篇
  1919年   3篇
  1918年   1篇
  1917年   1篇
  1912年   1篇
排序方式: 共有116条查询结果,搜索用时 15 毫秒
21.
This case study paper presents four mini-case studies which explore IT service management issues within IT departments. It suggests that there is a shift in focus in IT away from the technical artefacts towards customer directed services. The case studies concern a hospital, a provider of marine charts, a logistics company and the batch operations of a bank. A range of issues are discussed including the provision of customer support, the acquisition of software and services, relationships with suppliers and the development of service strategy. The mini-case study is presented as a vehicle for identifying research issues and for teaching IT service management concepts in short tutorial sessions.  相似文献   
22.
ABSTRACT

Background: Health organisations such as the United Nations continue to place an expectation on school physical education (PE) programmes and wider school strategies to ensure students develop physical literacy and receive the well-established benefits of meeting physical activity guidelines. Barriers to meet this expectation such as lack of trained PE teachers, lack of time and greater emphasis on academic achievement are ongoing challenges to schools. The purpose of this study was to evaluate the impact of the multi-component Physical Education Physical Literacy (PEPL) intervention, designed to improve students’ fundamental movement skill, perceived physical abilities and level of physical activity.

Method: A qualified PE teacher implemented the PEPL intervention across seven schools, and another seven schools formed a control group as part of a randomised cluster-based trial. Grade 5 students (N?=?318, age 10.4 years?±?SD 0.4) completed assessments of physical activity, fundamental movement skill, attitudes towards PE, and self-perceptions of physical abilities before and after a 33-week intervention. Intervention effects were examined using general linear mixed models. Post-intervention focus groups with students were used to develop insights into experiences and outcomes.

Results: With no significant gender interactions, the PEPL approach led to enhanced object control skills (β?=?1.62; SE?=?0.61; p?=?0.008), with little evidence of any other fundamental movement skill improvements in excess of those in the control group. There was also modest evidence for an effect on accelerometer measured moderate-to-vigorous physical activity (MVPA) during school time (β?=?4.50; SE?=?2.39; p?=?0.058), but this was not accompanied by any significant intervention effect over the entire week. Questionnaires indicated students in the PEPL programme became less satisfied with their own sporting ability (β?=??0.20; SE?=?0.08; p?=?0.013) but qualitative data analyses suggested that they enjoyed the PEPL approach experience, becoming more motivated and confident in their physical abilities.

Conclusions: Evidence of enhanced object control skill, increased confidence and motivation to be physically active, and moderate evidence of more MVPA during school time, indicate that the introduction of the PEPL approach contributed to the development of student physical literacy. A decrease in perceived sporting competence warrants greater attention on student’s self-perceptions in future iterations of the intervention.

Trial registration: Australian New Zealand Clinical Trials Registry identifier: ACTRN12615000066583.  相似文献   
23.
24.
25.
26.
This 2‐year longitudinal study examined both concurrent and longitudinal relations of a variety of reading‐related cognitive tasks and Chinese word reading and word dictation among 187 Hong Kong Chinese kindergarteners aged 4–6. Homophone awareness, visual skills and syllable awareness were all uniquely associated with Chinese word reading across time, with age, vocabulary knowledge and nonverbal IQ statistically controlled. Only visual skill and syllable deletion uniquely explained early Chinese word dictation, however. Results extend previous research on cognitive correlates of Chinese literacy and highlight the small but unique contribution of homophone awareness for early reading acquisition in Chinese.  相似文献   
27.
Predictors of depressive symptoms among foster caregivers   总被引:1,自引:0,他引:1  
OBJECTIVES: The main purposes of this study were to determine (1) the prevalence of depressive symptoms among foster caregivers, (2) the social-demographics, risk factors, and social support predicting depressive symptoms, and (3) whether social support buffered the effects of the risk factors in the Illinois Foster Caregivers Study. METHOD: Telephone interviews were used to collect data from a sample of 189 foster caregivers in the State of Illinois. Interviewers pretested the survey instrument, which included valid and reliable instruments on depressive symptoms and adult report of childhood maltreatment, an important risk factor for depression. Multivariate ordered logistic regression models were estimated. RESULTS: The foster caregivers exhibited few depressive symptoms, with only one respondent scoring in the clinical range. Contrary to past research on the general population, caregivers reporting higher income were at an increased risk of exhibiting depressive symptoms. The three risk factors-experiencing less than excellent or very good health, childhood maltreatment, and insufficient time to carry out responsibilities-were related to higher levels of depressive symptoms. Foster caregivers who perceived their support group as helpful had a decreased risk of reporting depressive symptoms. We found no evidence that social support buffered the effects of the risk factors. CONCLUSIONS: The results indicate that foster caregivers were adequately screened for depression, but suggest that assessing and providing assistance for health problems, trauma from childhood maltreatment, and insufficient time to meet responsibilities might decrease depressive symptoms. Facilitating and enhancing the helpfulness of foster caregiver support groups also might decrease development of depressive symptoms.  相似文献   
28.
29.
This study investigated the relationship between school sex education and sexual health behaviours at first sex and later in adulthood, using nationally representative data. Respondents were adults from the 2010 Irish Contraception and Crisis Pregnancy Survey, a cross-sectional survey designed to assess knowledge, attitudes and behaviours relating to sex, contraception and pregnancy in Ireland. Results indicate that respondents who received sex education were more likely to have first sex at an older age and use contraception on this occasion. Sex education also significantly increased the likelihood of using contraception at first sex, when first sex occurred before 17 years of age. The effect of sex education and sexual health behaviours into adulthood was also investigated. Sex education increased the likelihood of having a history of sexually transmitted infection testing and decreased the likelihood of having experienced a crisis pregnancy. No association was found between sex education and contraception use over the past year. Findings suggest that sex education is an important factor in the context of first sex and later sexual health, and programmes should continue to equip young people as they make immediate sexual behaviour decisions and further sexual health-related decisions throughout their lifespan.  相似文献   
30.
The purpose of this investigation was to compare valgus/varus knee angles during various jumps and lower body strength between males and females relative to body mass. Seventeen recreationally active females (age: 21.94 ± 2.59 years; height: 1.67 ± 0.05 m; mass: 64.42 ± 8.39 kg; percent body fat: 26.89 ± 6.26%; squat one-repetition maximum: 66.18 ± 19.47 kg; squat to body mass ratio: 1.03 ± 0.28) and 13 recreationally active males (age: 21.69 ± 1.65 years; height: 1.77 ± 0.07 m; mass: 72.39 ± 9.23 kg; percent body fat: 13.15 ± 5.18%; squat one-repetition maximum: 115.77 ± 30.40 kg; squat to body mass ratio: 1.59 ± 0.31) performed a one-repetition maximum in the squat and three of each of the following jumps: countermovement jump, 30 cm drop jump, 45 cm drop jump, and 60 cm drop jump. Knee angles were analysed using videography and body composition was analysed by dual-energy X-ray absorptiometry to allow for squat to body mass ratio and squat to fat free mass ratio to be calculated. Significant differences (P ≤ 0.05) were found between male and female one-repetition maximum, male and female squat to body mass ratio, and male and female squat to fat free mass ratio. Significant differences were found between male and female varus/valgus knee positions during maximum flexion of the right and left leg in the countermovement jump, drop jump from 30 cm, drop jump from 45 cm, and drop jump from 60 cm. Correlations between varus/valgus knee angles and squat to body mass ratio for all jumps displayed moderate, non-significant relationships (countermovement jump: r = 0.445; drop jump from 30 cm: r = 0.448; drop jump from 45 cm: r = 0.449; drop jump from 60 cm: r = 0.439). In conclusion, males and females have significantly different lower body strength and varus/valgus knee position when landing from jumps.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号