首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   6436篇
  免费   121篇
  国内免费   10篇
教育   4899篇
科学研究   332篇
各国文化   143篇
体育   543篇
综合类   2篇
文化理论   88篇
信息传播   560篇
  2022年   23篇
  2021年   44篇
  2020年   94篇
  2019年   141篇
  2018年   191篇
  2017年   228篇
  2016年   186篇
  2015年   144篇
  2014年   184篇
  2013年   1621篇
  2012年   149篇
  2011年   170篇
  2010年   135篇
  2009年   170篇
  2008年   194篇
  2007年   161篇
  2006年   168篇
  2005年   152篇
  2004年   131篇
  2003年   160篇
  2002年   143篇
  2001年   112篇
  2000年   100篇
  1999年   101篇
  1998年   80篇
  1997年   93篇
  1996年   86篇
  1995年   88篇
  1994年   66篇
  1993年   63篇
  1992年   65篇
  1991年   75篇
  1990年   64篇
  1989年   69篇
  1988年   48篇
  1987年   42篇
  1986年   54篇
  1985年   54篇
  1984年   35篇
  1983年   45篇
  1982年   57篇
  1981年   56篇
  1980年   32篇
  1979年   63篇
  1978年   36篇
  1977年   53篇
  1976年   39篇
  1975年   30篇
  1974年   37篇
  1973年   26篇
排序方式: 共有6567条查询结果,搜索用时 15 毫秒
21.
22.
Ordinary markets allow parties, not the state, to value property and projects. But they do not account for subjective value in such traditional contexts as condemnation. An awareness of these nonmarket values helps overcome any categorical opposition to the use of the contingent valuation method (CVM) to value cultural and environmental resources. But accurate CVM should measure all values, positive or negative, tononowners; it should apply generally to any substitute projects; and it should seek to account for diminishing marginal value of additional resource units. CVM should be used only to aggregate nonmarket preferences, not to skew the political debate to cultural or environmental objectives.  相似文献   
23.
The number of books and journals published about philanthropy is growing. This article examines that growth, looks at which book and journal publishers are most active in the field, and explores the publishing environment. Philanthropy's interdisciplinary nature raises questions about audience and markets, as well as authors and publishers.  相似文献   
24.
Peer Observation of Teaching (POT) is a little used way of stimulating reflection on and improvement of teaching. It is an unusual form of staff development [SD] that emphasises continuous processes and peer feedback rather than course attendance. This paper describes the principles and practice of POT, including potential benefits and drawbacks and discusses the conditions necessary for it to flourish in departments and institutions. It argues that POT overcomes the problem of staff ownership'of SD by connecting with peer culture but may be promoted, implemented and supported by SD functions linked to personnel departments. Thus SD functions may play a more substantial role in their organisations'development than hitherto.  相似文献   
25.
Coordination variability and skill development in expert triple jumpers   总被引:1,自引:0,他引:1  
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   
26.
27.
28.
29.
30.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号