全文获取类型
| 收费全文 | 11773篇 |
| 免费 | 98篇 |
| 国内免费 | 8篇 |
专业分类
| 教育 | 8204篇 |
| 科学研究 | 1489篇 |
| 各国文化 | 51篇 |
| 体育 | 686篇 |
| 综合类 | 3篇 |
| 文化理论 | 157篇 |
| 信息传播 | 1289篇 |
出版年
| 2022年 | 48篇 |
| 2021年 | 102篇 |
| 2020年 | 132篇 |
| 2019年 | 184篇 |
| 2018年 | 955篇 |
| 2017年 | 927篇 |
| 2016年 | 719篇 |
| 2015年 | 209篇 |
| 2014年 | 279篇 |
| 2013年 | 1392篇 |
| 2012年 | 276篇 |
| 2011年 | 521篇 |
| 2010年 | 470篇 |
| 2009年 | 327篇 |
| 2008年 | 406篇 |
| 2007年 | 469篇 |
| 2006年 | 171篇 |
| 2005年 | 229篇 |
| 2004年 | 301篇 |
| 2003年 | 204篇 |
| 2002年 | 154篇 |
| 2001年 | 196篇 |
| 2000年 | 207篇 |
| 1999年 | 180篇 |
| 1998年 | 94篇 |
| 1997年 | 137篇 |
| 1996年 | 106篇 |
| 1995年 | 75篇 |
| 1994年 | 96篇 |
| 1993年 | 68篇 |
| 1992年 | 156篇 |
| 1991年 | 118篇 |
| 1990年 | 112篇 |
| 1989年 | 139篇 |
| 1988年 | 121篇 |
| 1987年 | 95篇 |
| 1986年 | 105篇 |
| 1985年 | 100篇 |
| 1984年 | 77篇 |
| 1983年 | 89篇 |
| 1982年 | 59篇 |
| 1981年 | 58篇 |
| 1980年 | 56篇 |
| 1979年 | 98篇 |
| 1978年 | 62篇 |
| 1977年 | 59篇 |
| 1976年 | 51篇 |
| 1975年 | 47篇 |
| 1974年 | 55篇 |
| 1973年 | 50篇 |
排序方式： 共有10000条查询结果，搜索用时 734 毫秒
101.
102.
103.
104.
105.
106.
107.
T. Padmanabhan 《Resonance》2011,16(10):950-955
Descartes discovered the link between algebra and geometry, which forms the cornerstone of applied geometry today. 相似文献
108.
Max R. Paquette Brian K. Schilling Joshua D. Bravo Shelby A. Peel Yuhua Li Robert J. Townsend 《Research quarterly for exercise and sport》2017,88(1):44-51
Understanding the effects of training in different footwear on sporting performance would be useful to coaches and athletes. Purpose: This study compared the effects of computerized agility training using 3 types of footwear on change-of-direction and balance performance in young adults. Method: Thirty recreationally active young adults (Mage = 22.8 ± 3.1 years; Mheight = 1.71 ± 0.7 m; Mbodymass = 73.4 ± 10.3 kg) were randomly assigned to a 6-week computerized agility training intervention in 1 of 3 footwear groups (n = 10/group): barefoot, minimal footwear, or traditional shoes. Participants had no previous barefoot or minimal-footwear training experience. Dependent variables included change-of-direction test time to completion, Star Excursion Balance Test, and single-leg stability evaluation. Testing was performed at the start of the training program, after 2 weeks, after 4 weeks, and at the end of the training program. Results: No group or time interactions were found for any of the dependent variables. Time main effects were observed for the performance measures of change of direction, Star Excursion, and single-leg-with-eyes-open stability evaluation. Participants improved in all 3 tests as early as 2 weeks into the intervention, with improvements continuing through the entire 6-week intervention. Conclusions: The lack of interaction and footwear effects suggests that agility and balance improvements during foot agility training are independent of footwear in a recreationally active young-adult population. Computerized agility training improves change-of-direction and balance performance within 2 weeks of training implementation. Future studies should consider footwear training effects in different populations, including frail older adults and athletes. 相似文献
109.
N. Yu. Berezkina 《Scientific and Technical Information Processing》2017,44(2):153-158
This paper considers the use of bibliometric methods in library and information activities, as well as the role of libraries of the Republic of Belarus in increasing the publication activities of researchers and the promotion of scientific journals. 相似文献
110.