全文获取类型
收费全文 | 3498篇 |
免费 | 55篇 |
国内免费 | 1篇 |
专业分类
教育 | 2598篇 |
科学研究 | 181篇 |
各国文化 | 49篇 |
体育 | 344篇 |
文化理论 | 38篇 |
信息传播 | 344篇 |
出版年
2022年 | 22篇 |
2021年 | 27篇 |
2020年 | 60篇 |
2019年 | 111篇 |
2018年 | 132篇 |
2017年 | 136篇 |
2016年 | 138篇 |
2015年 | 82篇 |
2014年 | 105篇 |
2013年 | 830篇 |
2012年 | 102篇 |
2011年 | 81篇 |
2010年 | 70篇 |
2009年 | 72篇 |
2008年 | 98篇 |
2007年 | 93篇 |
2006年 | 70篇 |
2005年 | 70篇 |
2004年 | 68篇 |
2003年 | 55篇 |
2002年 | 65篇 |
2001年 | 57篇 |
2000年 | 74篇 |
1999年 | 51篇 |
1998年 | 35篇 |
1997年 | 29篇 |
1996年 | 35篇 |
1995年 | 39篇 |
1994年 | 37篇 |
1993年 | 45篇 |
1992年 | 50篇 |
1991年 | 41篇 |
1990年 | 40篇 |
1989年 | 32篇 |
1988年 | 27篇 |
1987年 | 38篇 |
1986年 | 31篇 |
1985年 | 39篇 |
1984年 | 22篇 |
1983年 | 25篇 |
1982年 | 28篇 |
1981年 | 29篇 |
1980年 | 17篇 |
1979年 | 24篇 |
1978年 | 26篇 |
1977年 | 13篇 |
1976年 | 21篇 |
1975年 | 10篇 |
1974年 | 11篇 |
1889年 | 9篇 |
排序方式: 共有3554条查询结果,搜索用时 15 毫秒
951.
The aim of the present study was to test the hypothesis that upper body aerobically trained athletes (kayak canoeists) would have greater left ventricular wall thickness, but similar left ventricular diastolic chamber dimensions, compared with recreationally active and sedentary men. Ultrasound echocardiography was used to determine cardiac structure and function in highly trained kayak canoeists (n = 10), moderately active (n = 10) and sedentary men (n = 10). The septal and posterior left ventricular walls were approximately 0.2 cm thicker in kayak canoeists (P < 0.05), and left ventricular mass was 51% and 32% greater (P < 0.05) in canoeists than in the sedentary and moderately trained participants, respectively. There were no differences in left ventricular chamber dimension, suggesting that the kayak canoeists had a concentric pattern of left ventricular adaptation to aerobic upper body training. Scaling the data to body composition indices had no effect on the outcome of the statistical analysis. There were no differences in resting Doppler left ventricular diastolic or systolic function among the groups. Ejection fraction was lower in the kayak canoeists, but the magnitude of the difference was within the normal variability for this measurement. Thus aerobically upper body trained athletes demonstrated a concentric pattern of cardiac enlargement, but resting left ventricle function was not different between athletes, moderately active and sedentary individuals. 相似文献
952.
Liebermann DG Katz L Hughes MD Bartlett RM McClements J Franks IM 《Journal of sports sciences》2002,20(10):755-769
This paper overviews the diverse information technologies that are used to provide athletes with relevant feedback. Examples taken from various sports are used to illustrate selected applications of technology-based feedback. Several feedback systems are discussed, including vision, audition and proprioception. Each technology described here is based on the assumption that feedback would eventually enhance skill acquisition and sport performance and, as such, its usefulness to athletes and coaches in training is critically evaluated. 相似文献
953.
954.
K H Smith 《Medical reference services quarterly》2001,20(3):13-21
Health InfoNet of Jefferson County is a new collaborative consumer health information service of the Jefferson County public libraries and the UAB Lister Hill Library of the Health Sciences. Working with the input and cooperation of local voluntary health agencies, health care professionals and other health information providers, the intent is to improve the efficiency with which consumers might access such information while avoiding duplication of effort on the part of the information providers. Various considerations in InfoNet's mission include providing service not only to established library and Internet users, but also those on the other side of the "digital divide" as well as those with low literacy skills or English as a second language. The role of health care professionals in guiding their patients to the best consumer health information resources is emphasized. 相似文献
955.
956.
This paper describes an investigation of pupil and parent attitudes towards bullying, comparing attitudes with bullying behaviour.
747 parents and 326 children aged 6 to 11 from four primary schools completed the Parental Attitudes to Bullying Scale and
the Children’s Attitudes to Bullying Scale. Most were found to be largely sympathetic towards victims, supportive of intervention,
but less understanding towards bullies. There was little association between parental and children’s attitudes, nor did parent
attitudes predict children’s behaviour, although there was a link between the children’s attitudes and their behaviour. Mothers
were more sympathetic than fathers, but there were no sex differences among children. Children with more siblings were more
likely to bully others. 相似文献
957.
Alan J. Penny Mehru Ahmed Ali Iffat Farah Sissel Ostberg Robert L. Smith 《International Journal of Educational Development》2000,20(6):443-455
This paper seeks to offer insights into the complexities involved in cross-national collaborative research. It identifies and provides an account of the various issues running through the research process, whilst at the same time derives principles upon which such work should be based. Key narratives were identified by highlighting a number of critical incidents. These narratives were related to issues of ownership, trust, and power, whilst in the course of theorising the research process itself, the metaphors of voice and crossing borders were found to be profoundly empowering and transformative. The complexities of working cross-nationally in the research group, understanding roles, clarifying professional frames and ethical values, at the same time as creating and maintaining a context for effective partnership and participation, made managing and sustaining the research process challenging. 相似文献
958.
959.
960.
Ian Lawrence 《Sport in History》2018,38(3):413-415