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   233篇
  免费   5篇
教育   178篇
科学研究   5篇
各国文化   1篇
体育   15篇
文化理论   5篇
信息传播   34篇
  2022年   3篇
  2021年   3篇
  2020年   3篇
  2019年   6篇
  2018年   6篇
  2017年   12篇
  2016年   7篇
  2015年   6篇
  2014年   6篇
  2013年   62篇
  2012年   5篇
  2011年   4篇
  2010年   9篇
  2009年   8篇
  2008年   4篇
  2007年   8篇
  2006年   6篇
  2005年   3篇
  2004年   5篇
  2003年   3篇
  2002年   4篇
  2001年   2篇
  2000年   3篇
  1999年   5篇
  1998年   4篇
  1997年   5篇
  1996年   1篇
  1995年   3篇
  1993年   3篇
  1992年   5篇
  1991年   5篇
  1990年   3篇
  1989年   2篇
  1988年   1篇
  1986年   3篇
  1985年   3篇
  1984年   3篇
  1983年   1篇
  1979年   4篇
  1978年   1篇
  1976年   3篇
  1975年   1篇
  1974年   1篇
  1971年   1篇
  1968年   1篇
  1967年   1篇
排序方式: 共有238条查询结果,搜索用时 15 毫秒
1.
J. Franklin Jameson and Waldo G. Leland remain forever linked in American archival history as the founders, respectively, of the National Archives and the American archival profession. From the immediate post-Revolutionary period until the eve of the First World War, American historians recognized that their nation's early history remained locked in European archives. However, not until the pioneering efforts of Leland, working under supervision of Jameson during the early 20th century, did any of these historical researchers bring to the United States, along with the voluminous copies of archival documents, the emerging tenets of European archival theory. This is the story of the collaboration between Jameson and Leland, and of Leland's efforts to professionalize American archival practice on the basis of European archival theory.  相似文献   
2.
3.
4.
5.
6.
When identifyinginstruments that have had great influence on the history of physics, none comes to mind more quickly than the pendulum. Though first treated scientifically by Galileo in the 16th century, and in some respects nearly `dead' by the middle of the 20th century; the pendulum experienced `rebirth' by becoming an archetype of chaos. With the resulting acclaim for its surprising behavior at large amplitudes, one might expect that there would already be widespread interest in another of its significant nonlinearities. Such is not the case, however, and the complex motions of small amplitude physical pendula are barely known. The present paper shows that a simply-constructed metallic rod pendulum is capable of demonstrating rich physics in a largely unstudied area.  相似文献   
7.
Following the presentation of a marketing management paradigm for higher educational institutions, this paper discuses some aspects of the pricing policy process in colleges and universities. A statistical model of the college choice process is developed, and some empirical results related to the effects of price, among other factors, on the collegechoice decision-making behavior process of high school seniors are presented and interpreted. The two most important factors affecting the college choice process are seen to be college quality and price-related considerations. Marketing implications of these results are discussed.Presented at the Annual Forum of the Association For Institutional Research, Houston, Texas, May 1978.  相似文献   
8.
9.
10.

Two levels of training (100 vs. 500 trials) and two ages of rats (young and adult) were used in a developmental analysis of the relationship between response strength and the effects of punishment. The apparatus was a Y maze with three discriminably different arms. After 100 or 500 reinforced trials, subjects were shocked each time they responded in one arm. The recovery sessions followed the punishment session. Results from the punishment day indicated that: (a) young rats received a greater amount of shock, and (b) additional training increased the amount of shock received by the young but decreased it in the adults. The recovery data showed that: (a) the suppressive effects of punishment were greater for the adults than for the young, and (b) the recovery scores were not influenced by degree of overtraining. The Age by Overtraining interaction suggested that the relationship between response strength and punishment is age dependent. The age differences found with the amount-of-shock and recovery measures provided additional support for the position that younger rats are less competent than adult rats in inhibiting responses.

  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