全文获取类型
| 收费全文 | 4265篇 |
| 免费 | 57篇 |
| 国内免费 | 6篇 |
专业分类
| 教育 | 3314篇 |
| 科学研究 | 219篇 |
| 各国文化 | 82篇 |
| 体育 | 299篇 |
| 综合类 | 1篇 |
| 文化理论 | 61篇 |
| 信息传播 | 352篇 |
出版年
| 2021年 | 24篇 |
| 2020年 | 50篇 |
| 2019年 | 80篇 |
| 2018年 | 96篇 |
| 2017年 | 123篇 |
| 2016年 | 96篇 |
| 2015年 | 84篇 |
| 2014年 | 95篇 |
| 2013年 | 1091篇 |
| 2012年 | 70篇 |
| 2011年 | 93篇 |
| 2010年 | 71篇 |
| 2009年 | 96篇 |
| 2008年 | 107篇 |
| 2007年 | 96篇 |
| 2006年 | 99篇 |
| 2005年 | 90篇 |
| 2004年 | 83篇 |
| 2003年 | 96篇 |
| 2002年 | 81篇 |
| 2001年 | 68篇 |
| 2000年 | 69篇 |
| 1999年 | 64篇 |
| 1998年 | 57篇 |
| 1997年 | 62篇 |
| 1996年 | 62篇 |
| 1995年 | 61篇 |
| 1994年 | 50篇 |
| 1993年 | 54篇 |
| 1992年 | 50篇 |
| 1991年 | 60篇 |
| 1990年 | 52篇 |
| 1989年 | 55篇 |
| 1988年 | 43篇 |
| 1987年 | 39篇 |
| 1986年 | 46篇 |
| 1985年 | 56篇 |
| 1984年 | 30篇 |
| 1983年 | 41篇 |
| 1982年 | 41篇 |
| 1981年 | 43篇 |
| 1980年 | 32篇 |
| 1979年 | 63篇 |
| 1978年 | 31篇 |
| 1977年 | 47篇 |
| 1976年 | 33篇 |
| 1975年 | 31篇 |
| 1974年 | 37篇 |
| 1973年 | 24篇 |
| 1972年 | 22篇 |
排序方式： 共有4328条查询结果，搜索用时 15 毫秒
161.
162.
163.
Stressors in elite sport: a coach perspective 总被引：1，自引：1，他引：0
We examined the varying performance and organizational stressors experienced by coaches who operate with elite athletes. Following interviews with eleven coaches, content analysis of the data revealed coaches to experience comparable numbers of performance and organizational stressors. Performance stressors were divided between their own performance and that of their athletes, while organizational stressors included environmental, leadership, personal, and team factors. The findings provide evidence that coaches experience a variety of stressors that adds weight to the argument that they should be labelled as "performers" in their own right. A variety of future research topics and applied issues are also discussed. 相似文献
164.
Wilson C Simpson SE van Emmerik RE Hamill J 《Sports biomechanics / International Society of Biomechanics in Sports》2008,7(1):2-9
The aim of this study was to examine the influence of skill of expert triple jumpers on the coordination variability of lower extremity intra-limb couplings. In contrast to the traditional motor learning perspective, we hypothesized that as skill and thus performance increases, movement coordination variability will also increase. Three-dimensional kinematic and ground reaction force data were collected during the hop-step transition phase of the triple jump. Relative motion plots and a modified vector coding technique were used to quantify the coordination variability across the trials. The results were consistent with a U-shaped curve, representing coordination variability, as skill increases. The high coordination variability in less skilled athletes is present while the appropriate characteristics defining the movement coordination patterns are acquired. This coordination variability may not be beneficial to performance. As the refinement of these characteristics is achieved, coordination variability decreases, resulting in a more consistent or regulated performance. In the final stages of developing a skilled performance, a functional variability is accessed that brings flexibility to the system allowing it to cope with perturbations. This study highlights the need to address the learning effect when analysing coordination variability from a dynamical systems perspective. 相似文献
165.
166.
Sixten Marklund Franz Hilker Marjorie L. Jenkins Franklin Parker Gustav Jahoda M. J. Langeveld Karl Henrik Eriksson Nicholas Hans Gilbert de Landsheere Leslie D. Mclean J. Cambon A. St. Langeland S. Wiegersma Richard F. Goodings J. B. Biggs 《International Review of Education/Internationale Zeitschrift für Erziehungswissenschaft/Revue internationale l'éducation》1966,12(2):221-251
167.
William N. Anderson Richard J. Duffin George E. Trapp 《Journal of The Franklin Institute》1974,298(1):9-27
A mathematical theory is developed for an imagined device termed a “junctor”. A junctor could be used to interconnect two n-terminal networks giving rise to another n-terminal network. Actually a junctor is itself a simple network with three banks of n-terminals internally connected in some fashion by perfectly conducting wires. Adjacency matrices are formulated to analyze various junctors and their current flows. The main problem treated concerns conditions which would ensure that the junctor operation is associative. 相似文献
168.
169.
170.
Mary A. Anderson Frank Bowles C. O. Taiwo Jan D. Beckmann L. J. Lewis James R. Liesch Godfrey N. Brown H. L. Elvin Shib K. Mitra Richard F. Behrendt Graeme Kemelfield Hugh W. R. Hawes W. A. Dodd A. L. Tibawi 《International Review of Education/Internationale Zeitschrift für Erziehungswissenschaft/Revue internationale l'éducation》1971,17(2):220-251