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   36350篇
  免费   568篇
  国内免费   41篇
教育   26035篇
科学研究   3678篇
各国文化   309篇
体育   2528篇
综合类   46篇
文化理论   418篇
信息传播   3945篇
  2022年   193篇
  2021年   337篇
  2020年   530篇
  2019年   724篇
  2018年   1530篇
  2017年   1608篇
  2016年   1355篇
  2015年   656篇
  2014年   881篇
  2013年   6154篇
  2012年   885篇
  2011年   1112篇
  2010年   952篇
  2009年   800篇
  2008年   912篇
  2007年   978篇
  2006年   667篇
  2005年   639篇
  2004年   693篇
  2003年   588篇
  2002年   601篇
  2001年   664篇
  2000年   695篇
  1999年   597篇
  1998年   322篇
  1997年   396篇
  1996年   409篇
  1995年   312篇
  1994年   316篇
  1993年   296篇
  1992年   459篇
  1991年   458篇
  1990年   513篇
  1989年   485篇
  1988年   440篇
  1987年   394篇
  1986年   400篇
  1985年   504篇
  1984年   388篇
  1983年   358篇
  1982年   312篇
  1981年   298篇
  1980年   278篇
  1979年   386篇
  1978年   326篇
  1977年   295篇
  1976年   240篇
  1975年   207篇
  1974年   199篇
  1973年   230篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
51.
52.
Conclusion Computer-based career systems should be the focal point of popular, and effective career development initiatives which are of tremendous benefit to individuals. Such initiatives also have the potential to significantly reduce public expenditures and enhance the nation's competitive position internationally. The key lies in helping people understand that we can no longer afford to neglect the career development needs of Americans.I am most grateful for this opportunity to share my thoughts with you. I encourage you to promote the use of computer-based career systems by defining their benefits in economic terms. However, be sure you can prove your system does more than simply entertain its users, or leave them with extensive computer printouts.Phillip S. Jarvis is Manager, Careerware Research and Product Design, STM Systems Corp., Ottawa, Ontario, Canada and the author of CHOICES. This is the text of a paper presented to the Annual Conference of the Association of Computer-Based Systems for Career Information ((ACSCI) in St. Louis, Missouri on December 2, 1988.  相似文献   
53.
There is limited information on the anthropometry, strength, endurance and flexibility of female rock climbers. The aim of this study was to compare these characteristics in three groups of females: Group 1 comprised 10 elite climbers aged 31.3 +/- 5.0 years (mean +/- s) who had led to a standard of 'hard very severe'; Group 2 consisted of 10 recreational climbers aged 24.1 +/- 4.0 years who had led to a standard of 'severe'; and Group 3 comprised 10 physically active individuals aged 28.5 +/- 5.0 years who had not previously rock-climbed. The tests included finger strength (grip strength, finger strength measured on climbing-specific apparatus), flexibility, bent arm hang and pull-ups. Regression procedures (analysis of covariance) were used to examine the influence of body mass, leg length, height and age. For finger strength, the elite climbers recorded significantly higher values (P < 0.05) than the recreational climbers and non-climbers (four fingers, right hand: elite 321 +/- 18 N, recreational 251 +/- 14 N, non-climbers 256 +/- 15 N; four fingers, left hand: elite 307 +/- 14 N, recreational 248 +/- 12 N, non-climbers 243 +/- 11 N). For grip strength of the right hand, the elite climbers recorded significantly higher values than the recreational climbers only (elite 338 +/- 12 N, recreational 289 +/- 10 N, non-climbers 307 +/- 11 N). The results suggest that elite climbers have greater finger strength than recreational climbers and non-climbers.  相似文献   
54.
55.
56.
57.
58.
The project of studying children in order to understand them, which lies at the heart of contemporary thinking about children and their education, is misconceived. It rests, jrst of all, upon a false belief that we can only come to know something properly by deliberately and systematically pursuing knowledge of it. Secondly, it offers a paradigm of knowing children which justifies parents and teachers in not giving themselves to children. By re-interpreting the problems that adults experience with children as technical, as arising from lack of information about them, it ignores the personal and moral dimension of adults' relations with children and thus further alienates them from one another.  相似文献   
59.
60.
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