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   3105篇
  免费   68篇
  国内免费   5篇
教育   2302篇
科学研究   177篇
各国文化   34篇
体育   254篇
综合类   1篇
文化理论   17篇
信息传播   393篇
  2023年   14篇
  2022年   18篇
  2021年   29篇
  2020年   50篇
  2019年   111篇
  2018年   119篇
  2017年   125篇
  2016年   96篇
  2015年   84篇
  2014年   98篇
  2013年   698篇
  2012年   84篇
  2011年   77篇
  2010年   71篇
  2009年   86篇
  2008年   78篇
  2007年   56篇
  2006年   69篇
  2005年   44篇
  2004年   59篇
  2003年   54篇
  2002年   51篇
  2001年   51篇
  2000年   55篇
  1999年   51篇
  1998年   49篇
  1997年   33篇
  1996年   36篇
  1995年   18篇
  1994年   36篇
  1993年   43篇
  1992年   34篇
  1991年   29篇
  1990年   29篇
  1989年   32篇
  1988年   27篇
  1987年   23篇
  1986年   28篇
  1985年   33篇
  1984年   27篇
  1983年   24篇
  1982年   23篇
  1981年   27篇
  1980年   17篇
  1979年   29篇
  1978年   13篇
  1977年   16篇
  1973年   11篇
  1972年   12篇
  1971年   11篇
排序方式: 共有3178条查询结果,搜索用时 109 毫秒
1.
Working memory training improves children's cognitive performance on untrained tasks; however, little is known about the underlying neural mechanisms. This was investigated in 32 typically developing children aged 10–14 years (19 girls and 13 boys) using a randomized controlled design and multi-modal magnetic resonance imaging (Devon, UK; 2015–2016). Training improved working memory performance and increased intrinsic functional connectivity between the bilateral intraparietal sulci. Furthermore, improvements in working memory were associated with greater recruitment of the left middle frontal gyrus on a complex span task. Repeated engagement of fronto-parietal regions during training may increase their activity and functional connectivity over time, affording greater working memory performance. The plausibility of generalizable cognitive benefits from a neurobiological perspective and implications for neurodevelopmental theory are discussed.  相似文献   
2.
3.
Abstract

Carnosine was originally discovered in skeletal muscle, where it exists in larger amounts than in other tissues. The majority of research into the physiological roles of carnosine have been conducted on skeletal muscle. Given this and the potential for muscle carnosine content to be increased with supplementation, there is now a large body of research examining the ergogenic effects (or otherwise) of carnosine. More recent research, however, points towards a potential for carnosine to exert a wider range of physiological effects in other tissues, including the brain, heart, pancreas, kidney and cancer cells. Taken together, this is suggestive of a potential for carnosine to have therapeutic benefits in health and disease, although this is by no means without complication. Herein, we will provide a review of the current literature relating to the potential therapeutic effects of carnosine in health and disease.  相似文献   
4.
The R. R. Bowker Company has been compiling and publishing statistics on the book industry for more than a century. The history of this effort is reported, with details on how the collection, classification, and publication of data have evolved. Bowker provides statistics on book title output, booksellers (retail and wholesale), and libraries. Jean Peters is the librarian at the Frederic G. Melcher Library, Cahners Publishing Company, formerly the library of the R. R. Bowker Company.  相似文献   
5.
6.
Three factors tied with secondary student success in content‐area reading are demonstrated: (a) validated teacher‐focused and student‐focused interventions, (b) integrated and comprehensive service delivery systems, and (c) well‐designed, data‐based professional developmental programs. Difficult challenges face secondary students with LD and their teachers with regard to these students’ participation and success in required general education classes. Recently, instructional methods and materials have been developed and validated for promoting these students’ success. Some of them focus on how general education teachers plan and teach their content‐area courses; others focus on giving students the strategies they need to respond independently to the demands of their courses. This article describes these instructional methods, a service‐delivery model for implementing these interventions in secondary schools, and professional‐development mechanisms and administrative support that must be in place for the model to be maintained effectively.  相似文献   
7.
8.
9.
Mr.Jean 《新闻记者》2003,(1):20-20
1.WTO与中国:挑战和机遇并存近年来,中国已崛起为世界上发展最快的大国。预期2002年的GDP将增长7.5~8个百分点。以欧洲的视角来看,中国社会正受益于一大批受过高等教育的技艺精湛的人才,他们不畏变革,勇于创新,乐于接受新技术。在这片土地上,变革被真正地看作一个坚实的文化特征,这或许得益于古老的亚洲传统哲学。中国将接受入世的挑战。这或许是漫长和艰难的过程,但终将使中国在市场经验中受益。中国入世将为世界大国注入重要内容。2.WTO与中国传媒产业中国传媒业对世界的开放将是中国在今后的数年里面临的最大…  相似文献   
10.
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