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   35764篇
  免费   491篇
  国内免费   20篇
教育   25770篇
科学研究   2985篇
各国文化   332篇
体育   3132篇
综合类   14篇
文化理论   292篇
信息传播   3750篇
  2021年   323篇
  2020年   493篇
  2019年   764篇
  2018年   1043篇
  2017年   996篇
  2016年   957篇
  2015年   585篇
  2014年   771篇
  2013年   6657篇
  2012年   746篇
  2011年   867篇
  2010年   612篇
  2009年   643篇
  2008年   767篇
  2007年   644篇
  2006年   692篇
  2005年   537篇
  2004年   557篇
  2003年   466篇
  2002年   522篇
  2001年   726篇
  2000年   729篇
  1999年   648篇
  1998年   370篇
  1997年   394篇
  1996年   469篇
  1995年   402篇
  1994年   379篇
  1993年   366篇
  1992年   535篇
  1991年   539篇
  1990年   514篇
  1989年   559篇
  1988年   532篇
  1987年   494篇
  1986年   500篇
  1985年   552篇
  1984年   459篇
  1983年   492篇
  1982年   392篇
  1981年   380篇
  1980年   396篇
  1979年   534篇
  1978年   409篇
  1977年   376篇
  1976年   327篇
  1975年   290篇
  1974年   287篇
  1973年   286篇
  1971年   259篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
51.
Naoko Saito has made a good case for emphasising the 'tragic' dimension within Dewey's pragmatism. My response suggests ways in which Saito has not gone far enough. She does not adequately move beyond 'procedural pragmatism' to a 'programmatic pragmatism' which offers substantive articulations about the human good. In addition, her emphasis on 'Emersonian perfectionism' is misguided. Both the language of 'perfectionism' and the figure of Emerson are unsuitable for the project she intends. Speaking more concretely of a 'tragic–comic meliorism' allied to the novelist Hawthorne, it is suggested, provides a more fruitful path.  相似文献   
52.
53.
Knowledgeable observers generally agree that students can give reasonably unbiased assessments of their classes, as long as proper instruments and procedures are used. These same observers agree, however, that more research is needed to understand the subtle dynamics which affect evaluations. Students' expectations (obtained on the first day) and the violation of these expectations are two possible factors. Their effects on students' final interest and future intentions are compared with students' actual reports of the class given at the end of the semester (n=196). Regression analysis using a simultaneous entry of expectations, expectancy violations, and final reports shows that students' reports at the end of the course account for almost all of the explained variance in the course rating items.  相似文献   
54.
55.
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   
56.
57.
58.
Three supervision modalities (live, delayed review, and verbal reports) in training marital and family counselors are discussed with attention given to goals, supervisory considerations, advantages, and disadvantages of each modality.  相似文献   
59.
60.
This article discusses the changing relationships of authors and publishers, the current trends and challenges they face, and the direction of these relationships in the future. As the STM publishing industry finds itself in the midst of significant technological and economic changes, this article provides background to these changes and looks at the key elements, including open access business development, institutional repository trends, and emerging public financing policies in the future.  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