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   12568篇
  免费   32篇
  国内免费   4篇
教育   9708篇
科学研究   1289篇
各国文化   22篇
体育   404篇
综合类   1篇
文化理论   396篇
信息传播   784篇
  2022年   7篇
  2021年   17篇
  2020年   11篇
  2019年   23篇
  2018年   2194篇
  2017年   2100篇
  2016年   1601篇
  2015年   125篇
  2014年   156篇
  2013年   365篇
  2012年   229篇
  2011年   712篇
  2010年   847篇
  2009年   451篇
  2008年   667篇
  2007年   1171篇
  2006年   93篇
  2005年   412篇
  2004年   458篇
  2003年   373篇
  2002年   148篇
  2001年   14篇
  2000年   31篇
  1999年   14篇
  1998年   10篇
  1997年   32篇
  1996年   11篇
  1995年   14篇
  1994年   13篇
  1993年   14篇
  1992年   9篇
  1991年   20篇
  1990年   11篇
  1989年   13篇
  1988年   9篇
  1987年   7篇
  1985年   15篇
  1984年   9篇
  1983年   24篇
  1982年   19篇
  1981年   11篇
  1979年   11篇
  1978年   9篇
  1977年   8篇
  1975年   7篇
  1974年   11篇
  1973年   9篇
  1972年   6篇
  1970年   6篇
  1965年   6篇
排序方式: 共有10000条查询结果,搜索用时 359 毫秒
971.
972.
Checking both sides of an equation to make sure the units are right is something we tend to do as a matter of course (or should!). But as this article will try and illustrate, there is more to this routine procedure than meets the eye.  相似文献   
973.
974.
975.
976.
Sentiment lexicons are essential tools for polarity classification and opinion mining. In contrast to machine learning methods that only leverage text features or raw text for sentiment analysis, methods that use sentiment lexicons embrace higher interpretability. Although a number of domain-specific sentiment lexicons are made available, it is impractical to build an ex ante lexicon that fully reflects the characteristics of the language usage in endless domains. In this article, we propose a novel approach to simultaneously train a vanilla sentiment classifier and adapt word polarities to the target domain. Specifically, we sequentially track the wrongly predicted sentences and use them as the supervision instead of addressing the gold standard as a whole to emulate the life-long cognitive process of lexicon learning. An exploration-exploitation mechanism is designed to trade off between searching for new sentiment words and updating the polarity score of one word. Experimental results on several popular datasets show that our approach significantly improves the sentiment classification performance for a variety of domains by means of improving the quality of sentiment lexicons. Case-studies also illustrate how polarity scores of the same words are discovered for different domains.  相似文献   
977.
978.
979.
980.
The being together intervention intends to raise teacher capacity in Norwegian Early Childhood Education and Care (ECEC) institutions and promote social and emotional development in preschoolers by implementing an authoritative (warm and predictable) adult style in the institution. An authoritative adult balances between building up high quality interactions with children, while at the same time having a predictable structure with clear norms and social expectations in the learning environment. The purpose of this study was to investigate what helped the ECEC institutions to successfully implement the program principles and core components, and what were the challenges. The staff groups of seven Norwegian ECEC institutions in different municipalities who took part in the innovation were interviewed at the beginning and before the end of the first year of implementation. Data analysis identified five success criteria in the implementation process; strong commitment to the authoritative adult style, strong focus on the implementation process, advanced support systems, highly involved leaders, and a collective orientation. These elements resulted in a shared vision and an academically grounded practice in the ECEC institutions. Staff members without formal professional training and a lack of written documentation in the ECEC institutions should be given more consideration in further improvement of the capacity building.  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