全文获取类型
收费全文 | 3229篇 |
免费 | 413篇 |
专业分类
教育 | 3155篇 |
科学研究 | 59篇 |
各国文化 | 92篇 |
体育 | 50篇 |
文化理论 | 7篇 |
信息传播 | 279篇 |
出版年
2023年 | 4篇 |
2021年 | 38篇 |
2020年 | 57篇 |
2019年 | 114篇 |
2018年 | 133篇 |
2017年 | 155篇 |
2016年 | 106篇 |
2015年 | 161篇 |
2014年 | 178篇 |
2013年 | 1033篇 |
2012年 | 135篇 |
2011年 | 150篇 |
2010年 | 160篇 |
2009年 | 128篇 |
2008年 | 151篇 |
2007年 | 92篇 |
2006年 | 86篇 |
2005年 | 84篇 |
2004年 | 75篇 |
2003年 | 33篇 |
2002年 | 37篇 |
2001年 | 37篇 |
2000年 | 38篇 |
1999年 | 38篇 |
1998年 | 24篇 |
1997年 | 20篇 |
1996年 | 29篇 |
1995年 | 32篇 |
1994年 | 20篇 |
1993年 | 19篇 |
1992年 | 21篇 |
1991年 | 18篇 |
1990年 | 33篇 |
1989年 | 19篇 |
1988年 | 18篇 |
1987年 | 19篇 |
1986年 | 13篇 |
1985年 | 12篇 |
1984年 | 8篇 |
1983年 | 13篇 |
1982年 | 10篇 |
1981年 | 5篇 |
1980年 | 7篇 |
1979年 | 4篇 |
1978年 | 6篇 |
1974年 | 6篇 |
1897年 | 4篇 |
1872年 | 7篇 |
1871年 | 6篇 |
1870年 | 5篇 |
排序方式: 共有3642条查询结果,搜索用时 15 毫秒
1.
ABSTRACT Full three-dimensional movements and external moments in golfers’ knees and the possible involvement in injuries have not been evaluated using motion capture at high sample frequencies. This study measured joint angles and external moments around the three anatomical axes in both knees of 10 professional golfers performing golf drives whilst standing on two force plates in a motion capture laboratory. Significant differences were found in the knee joint moments between the lead and trail limbs for the peak values and throughout all stages during the swing phase. A significantly higher net abduction moment impulse was seen in the trail limb compared with the lead limb (?0.518 vs. ?0.135 Nms.kg?1), indicating greater loading over the whole swing, which could contribute to knee lateral compartment or anterior cruciate ligament injuries. A significant correlation (r = ?0.85) between clubhead speed at ball contact and maximum joint moment was found, with the largest correlations being found for joint moments at the top of the backswing event and at the end of the follow-through. Therefore, although knee moments can contribute to high clubhead speeds, the large moments and impulses suggest that they may also contribute to chronic knee injuries or exacerbate existing conditions. 相似文献
2.
Hana Tur‐Kaspa 《Learning disabilities research & practice》2004,19(1):3-11
The study examined the social‐information‐processing skills of kindergarten children with developmental learning disabilities (LD) utilizing Crick and Dodge's (1994) model of children's social adjustment as a theoretical framework. Participants consisted of 20 kindergarten children with developmental LD who attended three integrated kindergartens and 20 children without developmental LD from the same kindergartens. Participants were assessed on social‐information‐processing skills, feelings of loneliness, sense of coherence, and teachers' ratings of behavioral problems and positive resources. The results indicated that girls with developmental LD performed significantly lower on two information‐processing steps—the response decision and the enactment steps—than did girls without LD. Such differences were not found for boys. The results also showed that the social‐information‐processing skills of children with developmental LD were correlated with teachers' ratings. 相似文献
3.
4.
5.
Athina Kolia‐Dermitzaki 《Al-Masaq: Islam & the Medieval Mediterranean》1994,7(1):267-278
Ducellier, A., Kaplan, M., Martin, Bernadette, avec la collaboration de Françoise Micheau. Le Moyen Âge en Orient. Byzance et l'Islam. Des Barbares aux Ottomans. Paris: Hachette Histoire Université, 1990. 相似文献
6.
7.
Richards PS 《Minerva》1988,26(2):177-198
8.
9.
Albert Martin Susanne Bartscher-Finzer Anne Richards 《Publishing Research Quarterly》2018,34(1):69-88
Our study compares the motivations of Australian and German book publishers. The results demonstrate remarkable similarities, but also a significant difference regarding the effects of the publishers’ self-concept. In the German case the publishers with a dominant economic orientation are more proactive than the publishers with a dominant cultural orientation. In the Australian case, this correlation does not exist. The same difference holds for the relationship between the economic orientation and extrinsic motivation. We discuss these results and examine empirical evidence and theoretical suggestions to explain the differing findings. The data stem from surveys conducted in the two countries with responses of 196 (Germany) and 54 publishers (Australia). 相似文献
10.
Lotta Haglund Annikki Roos Petra Wallgren‐Björk 《Health information and libraries journal》2018,35(3):251-255
Librarians in Sweden are facing huge challenges in meeting the demands of their organisations and users. This article looks at four key areas: coping with open science/open access initiatives; increasing demands from researchers for support doing systematic reviews; understanding user experiences in Swedish health science libraries; and the consequences of expanding roles for recruitment and continuing professional development. With regard to changing roles, there is an increasing shift from the generalist towards the expert role. The authors raise the issue as to how to prepare those new to the profession to the changing environment of health science libraries. 相似文献