全文获取类型
收费全文 | 17592篇 |
免费 | 276篇 |
国内免费 | 31篇 |
专业分类
教育 | 12132篇 |
科学研究 | 2173篇 |
各国文化 | 141篇 |
体育 | 1304篇 |
综合类 | 20篇 |
文化理论 | 186篇 |
信息传播 | 1943篇 |
出版年
2022年 | 120篇 |
2021年 | 175篇 |
2020年 | 281篇 |
2019年 | 374篇 |
2018年 | 529篇 |
2017年 | 581篇 |
2016年 | 507篇 |
2015年 | 351篇 |
2014年 | 508篇 |
2013年 | 2878篇 |
2012年 | 433篇 |
2011年 | 414篇 |
2010年 | 395篇 |
2009年 | 348篇 |
2008年 | 377篇 |
2007年 | 402篇 |
2006年 | 356篇 |
2005年 | 294篇 |
2004年 | 318篇 |
2003年 | 284篇 |
2002年 | 284篇 |
2001年 | 391篇 |
2000年 | 442篇 |
1999年 | 322篇 |
1998年 | 202篇 |
1997年 | 234篇 |
1996年 | 234篇 |
1995年 | 156篇 |
1994年 | 170篇 |
1993年 | 142篇 |
1992年 | 263篇 |
1991年 | 243篇 |
1990年 | 262篇 |
1989年 | 257篇 |
1988年 | 244篇 |
1987年 | 239篇 |
1986年 | 237篇 |
1985年 | 269篇 |
1984年 | 199篇 |
1983年 | 197篇 |
1982年 | 170篇 |
1981年 | 147篇 |
1980年 | 138篇 |
1979年 | 216篇 |
1978年 | 175篇 |
1977年 | 145篇 |
1976年 | 126篇 |
1975年 | 120篇 |
1974年 | 124篇 |
1973年 | 120篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
31.
S Grant T Hasler C Davies T C Aitchison J Wilson A Whittaker 《Journal of sports sciences》2001,19(7):499-505
There is limited information on the anthropometry, strength, endurance and flexibility of female rock climbers. The aim of this study was to compare these characteristics in three groups of females: Group 1 comprised 10 elite climbers aged 31.3 +/- 5.0 years (mean +/- s) who had led to a standard of 'hard very severe'; Group 2 consisted of 10 recreational climbers aged 24.1 +/- 4.0 years who had led to a standard of 'severe'; and Group 3 comprised 10 physically active individuals aged 28.5 +/- 5.0 years who had not previously rock-climbed. The tests included finger strength (grip strength, finger strength measured on climbing-specific apparatus), flexibility, bent arm hang and pull-ups. Regression procedures (analysis of covariance) were used to examine the influence of body mass, leg length, height and age. For finger strength, the elite climbers recorded significantly higher values (P < 0.05) than the recreational climbers and non-climbers (four fingers, right hand: elite 321 +/- 18 N, recreational 251 +/- 14 N, non-climbers 256 +/- 15 N; four fingers, left hand: elite 307 +/- 14 N, recreational 248 +/- 12 N, non-climbers 243 +/- 11 N). For grip strength of the right hand, the elite climbers recorded significantly higher values than the recreational climbers only (elite 338 +/- 12 N, recreational 289 +/- 10 N, non-climbers 307 +/- 11 N). The results suggest that elite climbers have greater finger strength than recreational climbers and non-climbers. 相似文献
32.
33.
34.
35.
36.
37.
The roles of academic health sciences librarians are continually evolving as librarians initiate new programs and services in response to developments in computer technology and user demands. However, statistics currently collected by libraries do not accurately reflect or measure these new roles. It is essential for librarians to document, measure, and evaluate these new activities to continue to meet the needs of users and to ensure the viability of their professional role. To determine what new measures should be compiled, the authors examined current statistics, user demands, professional literature, and current activities of librarians as reported in abstracts of poster sessions at Medical Library Association annual meetings. Three new categories of services to be measured are proposed. The first, consultation, groups activities such as quality filtering and individual point-of-need instruction. The second, outreach, includes activities such as working as liaisons, participating in grand rounds or morning report, and providing continuing education. The third area, Web authoring, encompasses activities such as designing Web pages, creating online tutorials, and developing new products. Adding these three measures to those already being collected will provide a more accurate and complete depiction of the services offered by academic health sciences librarians. 相似文献
38.
Louise L. Stevenson Albert N. Greco Ann Okerson Beth Luey 《Publishing Research Quarterly》1991,7(1):85-91
Association of Research Libraries 相似文献
39.
The many challenges faced by health sciences libraries of all types and sizes often require innovative solutions. When an innovative solution involves calculated risk taking, the approach is called intrapreneurial. At the University of Miami School of Medicine, an intrapreneurial approach solved the fiscal problems of the biomedical communications unit. The Louis Calder Memorial Library inherited these problems when the Department of the Library and Biomedical Communications was created in the early 1980s. In this paper, two intrapreneurial programs are described, and the benefit and suitability of this management style to information services are demonstrated. 相似文献
40.