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   547篇
  免费   9篇
教育   410篇
科学研究   32篇
各国文化   7篇
体育   48篇
文化理论   8篇
信息传播   51篇
  2023年   3篇
  2022年   3篇
  2021年   6篇
  2020年   5篇
  2019年   14篇
  2018年   21篇
  2017年   26篇
  2016年   20篇
  2015年   13篇
  2014年   16篇
  2013年   131篇
  2012年   12篇
  2011年   14篇
  2010年   11篇
  2009年   19篇
  2008年   12篇
  2007年   11篇
  2006年   13篇
  2005年   8篇
  2004年   15篇
  2003年   10篇
  2002年   4篇
  2001年   9篇
  2000年   7篇
  1999年   3篇
  1998年   5篇
  1996年   8篇
  1995年   3篇
  1994年   6篇
  1993年   10篇
  1992年   7篇
  1991年   4篇
  1989年   8篇
  1988年   7篇
  1987年   3篇
  1986年   6篇
  1985年   13篇
  1984年   5篇
  1982年   6篇
  1980年   4篇
  1979年   3篇
  1978年   6篇
  1977年   4篇
  1971年   4篇
  1968年   4篇
  1930年   2篇
  1929年   5篇
  1928年   2篇
  1927年   2篇
  1926年   3篇
排序方式: 共有556条查询结果,搜索用时 515 毫秒
11.
Gifted/talented education is slowly expanding as more funds for programs are provided by states and more universities off er graduate programs.  相似文献   
12.
13.
14.
15.
The influence of moment of inertia on baseball/softball bat swing speed   总被引:1,自引:1,他引:0  
The speed at which a player can swing a bat is central to the games of baseball and softball, determining, to a large extent, the hit speed of the ball. Experimental and analytical studies of bat swing speed were conducted with particular emphasis on the influence of bat moment of inertia on swing speed. Two distinct sets of experiments measured the swing speed of colege baseball and fast-pitch softball players using weighted rods and modified bats. The swing targets included flexible targets, balls on a tee and machine pitched balls. Internal mass alterations provided a range of inertial properties. The average measured speeds, from 22 to 31 m s−1, are consistent with previous studies. Bat speed approximately correlates with the moment of inertia of the bat about a vertical axis of rotation through the batter's body, the speed generally decreasing as this moment of inertia increases. The analytical model assumes pure rotation of the batter/bat system about a vertical axis through the batter's body. Aerodynamic drag of the batter's arms and the bat is included in the model. The independent variable is bat moment of inertia about the rotation axis. There is reasonable agreement between the model and the measured speeds. Detailed differences between the two suggest the importance of additional degrees of freedom in determining swing speed.  相似文献   
16.
17.
18.
19.
This article highlights elements of civic engagement programs that have the rich potential to facilitate civic identity development. Focusing on research with alumni, the study examines 3 civic engagement programs, the approaches of which are guided by critical service-learning. It explores elements of the experiences that alumni name as influential to their learning, development, and present commitments to understand the ways that civic engagement programs based in a critical service-learning approach can encourage them to develop commitments to active citizenship as exemplified by Knefelkamp's (2008) vision of a mature sense of civic identity.  相似文献   
20.
This paper reports on an exploratory study of the role of programme leaders (PLs) in a pre-1992 university, based on interviews with PLs (7) and a survey of taught Masters students (54) in a single school. The study elicits PLs’ activities, most of which might be categorised as managerial and administrative, with leadership required intermittently; the preeminent role involves managing programme quality. The study finds that institutional guidelines overlook important aspects of PLs’ work (such as organising enrichment activities and student advocacy) which affect the quality of provision, and the findings challenge the notion that PLs are engaged in a ‘disesteemed’ service.  相似文献   
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