全文获取类型
| 收费全文 | 11357篇 |
| 免费 | 122篇 |
| 国内免费 | 11篇 |
专业分类
| 教育 | 7251篇 |
| 科学研究 | 2117篇 |
| 各国文化 | 91篇 |
| 体育 | 851篇 |
| 综合类 | 6篇 |
| 文化理论 | 79篇 |
| 信息传播 | 1095篇 |
出版年
| 2021年 | 105篇 |
| 2020年 | 167篇 |
| 2019年 | 247篇 |
| 2018年 | 321篇 |
| 2017年 | 296篇 |
| 2016年 | 246篇 |
| 2015年 | 176篇 |
| 2014年 | 225篇 |
| 2013年 | 2099篇 |
| 2012年 | 238篇 |
| 2011年 | 222篇 |
| 2010年 | 191篇 |
| 2009年 | 180篇 |
| 2008年 | 181篇 |
| 2007年 | 194篇 |
| 2006年 | 150篇 |
| 2005年 | 149篇 |
| 2004年 | 138篇 |
| 2003年 | 139篇 |
| 2002年 | 137篇 |
| 2001年 | 179篇 |
| 2000年 | 182篇 |
| 1999年 | 157篇 |
| 1998年 | 90篇 |
| 1997年 | 94篇 |
| 1996年 | 117篇 |
| 1995年 | 78篇 |
| 1994年 | 86篇 |
| 1993年 | 86篇 |
| 1992年 | 123篇 |
| 1991年 | 130篇 |
| 1990年 | 134篇 |
| 1989年 | 156篇 |
| 1988年 | 114篇 |
| 1987年 | 105篇 |
| 1986年 | 147篇 |
| 1985年 | 145篇 |
| 1984年 | 120篇 |
| 1983年 | 119篇 |
| 1982年 | 103篇 |
| 1981年 | 86篇 |
| 1980年 | 85篇 |
| 1979年 | 123篇 |
| 1978年 | 102篇 |
| 1977年 | 94篇 |
| 1976年 | 93篇 |
| 1975年 | 72篇 |
| 1974年 | 94篇 |
| 1973年 | 78篇 |
| 1971年 | 90篇 |
排序方式： 共有10000条查询结果，搜索用时 15 毫秒
31.
32.
33.
34.
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
35.
Do physical activity beliefs differ by age and gender? 总被引：1，自引：0，他引：1
Age and gender are consistently related to physical activity (PA), yet theoretical explanation for these associations is scant. The present study compared the mean values and correlations of a population sample, divided by gender and age group, with respect to theory of planned behavior beliefs (behavioral, normative, and control) and PA. Participants were a sample (N=6,739) of adults (M age=49.65, SD=16.04) who completed measures of social and health demographics, theory of planned behavior beliefs, and self-reported PA. Mean analyses identified greater perceived control over PA for seniors than for young and middle-aged adults (N>.025). Belief-behavior correlations, however, were not different across age and gender in 24 of 26 tests (q<.19). Thus, PA beliefs are invariant across age and gender with the exception of mean levels of perceived control, which are lower among younger adults than older adults. Factors such as early parenthood and career demands were considered the likely reasons for differences. Overall, the evidence suggests that adapting theoretical models for specific age groups or based on gender may not be necessary. 相似文献
36.
37.
39.
40.