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   13863篇
  免费   50篇
  国内免费   3篇
教育   10545篇
科学研究   1382篇
各国文化   57篇
体育   575篇
综合类   2篇
文化理论   416篇
信息传播   939篇
  2023年   11篇
  2022年   16篇
  2021年   30篇
  2020年   47篇
  2019年   72篇
  2018年   2270篇
  2017年   2175篇
  2016年   1661篇
  2015年   184篇
  2014年   205篇
  2013年   616篇
  2012年   300篇
  2011年   760篇
  2010年   895篇
  2009年   493篇
  2008年   702篇
  2007年   1199篇
  2006年   112篇
  2005年   438篇
  2004年   489篇
  2003年   396篇
  2002年   171篇
  2001年   36篇
  2000年   62篇
  1999年   26篇
  1998年   30篇
  1997年   43篇
  1996年   29篇
  1995年   33篇
  1994年   25篇
  1993年   34篇
  1992年   17篇
  1991年   18篇
  1990年   30篇
  1989年   15篇
  1988年   18篇
  1987年   18篇
  1986年   13篇
  1985年   20篇
  1984年   24篇
  1983年   15篇
  1982年   14篇
  1981年   16篇
  1980年   15篇
  1979年   10篇
  1978年   11篇
  1977年   8篇
  1976年   8篇
  1974年   9篇
  1973年   7篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
51.
ABSTRACT

Moving beyond the dominant bag-of-words approach to sentiment analysis we introduce an alternative procedure based on distributed word embeddings. The strength of word embeddings is the ability to capture similarities in word meaning. We use word embeddings as part of a supervised machine learning procedure which estimates levels of negativity in parliamentary speeches. The procedure’s accuracy is evaluated with crowdcoded training sentences; its external validity through a study of patterns of negativity in Austrian parliamentary speeches. The results show the potential of the word embeddings approach for sentiment analysis in the social sciences.  相似文献   
52.
53.
ABSTRACT

Participation in youth sport is positively associated with physical fitness and performance. The purpose of the current study was to examine if physical fitness measures during childhood and early adolescence predicted high school sport participation. Participants included youth in the Michigan State University Motor Performance Study. Measures consisted of the endurance shuttle run, Wells sit-and-reach, jump and reach, standing long jump, agility shuttle run and 30-yard dash. Individual, generalized estimating equation models were used to estimate the association between each measure and the odds of participating in high school sport. For both sexes, the endurance shuttle run and agility shuttle run were related to sport participation. For boys only, the long jump and 30-yard dash were also associated with sport participation. Better physical fitness and performance across several dimensions in childhood, including those related to motor skills, enhanced the likelihood of sport participation in high school.  相似文献   
54.
55.
56.
57.
58.
59.
Editorial     
Rajaram Nityananda 《Resonance》2017,22(12):1103-1104
  相似文献   
60.
There has been a long‐standing debate about how ‘English’ can be defined. Educational policy changes have typically been driven by differing representations of the subject, and have ranged from broad ‘aesthetic’ definitions to more narrow ‘functional’ views. The present study aims to analyse areas of consensus and contention in stakeholders' discourse regarding English. A questionnaire‐based survey and focus groups were used to explore how teachers and employers viewed English as a subject. Their views were conceptualised into three themes: the importance of functional English; English as atomistic versus holistic study; and English as critical thought. These themes are discussed in relation to historical definitions of ‘English’, and their implications for the future reform of English qualifications.  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