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   1637篇
  免费   45篇
  国内免费   2篇
教育   1143篇
科学研究   129篇
各国文化   23篇
体育   155篇
文化理论   17篇
信息传播   217篇
  2023年   11篇
  2022年   18篇
  2021年   25篇
  2020年   44篇
  2019年   82篇
  2018年   86篇
  2017年   86篇
  2016年   67篇
  2015年   41篇
  2014年   54篇
  2013年   366篇
  2012年   51篇
  2011年   54篇
  2010年   28篇
  2009年   24篇
  2008年   33篇
  2007年   26篇
  2006年   25篇
  2005年   26篇
  2004年   25篇
  2003年   22篇
  2002年   23篇
  2001年   18篇
  2000年   23篇
  1999年   17篇
  1998年   15篇
  1997年   16篇
  1996年   20篇
  1995年   19篇
  1994年   12篇
  1993年   19篇
  1992年   11篇
  1991年   20篇
  1990年   24篇
  1989年   12篇
  1988年   13篇
  1986年   14篇
  1985年   13篇
  1984年   12篇
  1983年   11篇
  1982年   7篇
  1981年   11篇
  1979年   9篇
  1977年   10篇
  1976年   11篇
  1975年   6篇
  1974年   10篇
  1973年   6篇
  1969年   8篇
  1890年   7篇
排序方式: 共有1684条查询结果,搜索用时 31 毫秒
101.
102.
103.
104.
105.
106.
107.
108.
109.
The education of children with behavioural difficulties is under scrutiny from various quarters. The provision of specialised school environments isbeing questioned and, at the same time, there is pressure to minimise the exclusion of disruptive pupils. The study reported in this article lookedat a group of children whose behaviour had prompted placement in a school for emotionally and behaviourally disordered (EBD) pupils. The results showed the overall rate of psychiatric disturbance in the group was 86% and, in particular, that the rate of Attention Deficit Hyperactivity Disorder (ADHD) was 70%. These findings suggest that a significant minority of disruptive pupils may have their difficulties compounded by the presence of ADHD, and raises the question of whether specific screening processes should be established for such pupils.  相似文献   
110.
With greater access to computational resources, people use search to address many everyday challenges in their lives, including solving technology problems. Although there are now many useful ‘how-to’ resources online (especially videos on YouTube), it can still be difficult to identify, understand, and resolve certain kinds of technical problem. While research tasks have been studied for many years and we know the tactics people use, we know far less about searchers’ tactics for how-to technical tasks that involve actually being able to apply found information to resolve a problem. Crucial to our study was developing and studying a highly realistic, how-to technical task, for which there was no single guidance resource: making a phone safe for a child. After providing 39 participants with an actual phone to fix, and a search engine to perform the task, we analysed their search tactics using retrospective cued think aloud interviews. Our primary contribution is a set of 77 tactics used, in three categories, along with detail of how common they were. We conclude that people had a lot of tactics in their repertoire. Although it was not hard for participants to find relevant information, what was hard was for participants to find information they could use; indeed only 23% of participants successfully completed the entire task. Domain knowledge affected the choice of tactics used (although not necessarily towards better task success). We discuss these influences and make design recommendations for how future search systems can support those in resolving how-to technical tasks.  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