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   13191篇
  免费   48篇
  国内免费   3篇
教育   10273篇
科学研究   1318篇
各国文化   32篇
体育   433篇
文化理论   402篇
信息传播   784篇
  2023年   18篇
  2022年   19篇
  2021年   34篇
  2020年   61篇
  2019年   98篇
  2018年   2267篇
  2017年   2174篇
  2016年   1656篇
  2015年   158篇
  2014年   194篇
  2013年   417篇
  2012年   297篇
  2011年   754篇
  2010年   895篇
  2009年   488篇
  2008年   683篇
  2007年   1188篇
  2006年   113篇
  2005年   431篇
  2004年   474篇
  2003年   390篇
  2002年   152篇
  2001年   27篇
  2000年   35篇
  1999年   19篇
  1998年   16篇
  1997年   25篇
  1996年   10篇
  1995年   9篇
  1994年   7篇
  1993年   4篇
  1992年   6篇
  1991年   18篇
  1990年   7篇
  1989年   10篇
  1988年   6篇
  1987年   6篇
  1986年   7篇
  1985年   10篇
  1984年   4篇
  1981年   7篇
  1980年   3篇
  1979年   6篇
  1978年   3篇
  1977年   3篇
  1974年   2篇
  1973年   2篇
  1960年   2篇
  1957年   2篇
  1926年   2篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
21.
22.
23.
Working Graphs     
  相似文献   
24.
25.
26.
There is growing research on voting behavior in referendums.However, the dynamics of opinion formation in popular referendums,referendums initiated by the electorate to approve or rejectdecisions made by representative bodies, has not yet been studied.This is especially unfortunate as voting decisions in popularreferendums differ from those in other referendums in interestingways. Opinion formation can be a very dynamic process in popularreferendums, making the referendum campaign crucial. This paperstudies the dynamics of opinion formation in popular referendumsand relates them to particular characteristics of the campaignsand the issues at hand. Based on the literature, we consideredthe effects of the intensity of the yes and no campaigns, familiaritywith the issue, and partisan cues. Our study uses content analysisdata and data from public opinion surveys dealing with variouspopular referendums held in the Netherlands. The study revealedseveral factors that contributed to the volatility of opinionsin the referendum campaigns: the issue (new and did not fittraditional political schemes), lack of support from societaland community organizations for the position of the local authorities,and low profile campaigns on the part of local authorities.While some of these factors are general and may play a rolein referendums everywhere, some can be considered ‘typicallyDutch’, related to the characteristics of popular referendumsin the Netherlands and the country’s political system.  相似文献   
27.
Summary Now more than ever good translations are proving to be vitally important to fulfilling Shoichi Noma’s mission of advancing good relationships between cultures. With the emergence of dozens of world-class Japanese writers, the translators of Japanese literature have acquired a new significance and a new importance. No longer are they required to simply handle the language like an exotic and precious commodity but they must prepare a writer’s work to compete with literature from around the globe and let others understand the issues at their very heart of the Japanese people. Indeed, the selection committee’s choice of Murakami’s Wind-Up Bird Chronicle is an apt example of how literature at its very best can span cultural divides to promote mutual understanding of very complicated and important world issues. Written for Japanese to help them understand the devastation of war, it is a rare and timely book that confronts Japan’s experience head on. Ironically, Noma’s idea that books are silent ambassadors, an idea born from agony and defeat, so many years later is helping the world come together towards a unified vision of peace and understanding. “Literature has been described as a means of exchange between the hearts of people. Literary translation, then, is the building of bridges so that all peoples of the world can interact in this way.” Ye Weiqu, Chinese Institute of Social Studies.  相似文献   
28.
29.
30.
Analysis of Statistical Question Classification for Fact-Based Questions   总被引:1,自引:0,他引:1  
Question classification systems play an important role in question answering systems and can be used in a wide range of other domains. The goal of question classification is to accurately assign labels to questions based on expected answer type. Most approaches in the past have relied on matching questions against hand-crafted rules. However, rules require laborious effort to create and often suffer from being too specific. Statistical question classification methods overcome these issues by employing machine learning techniques. We empirically show that a statistical approach is robust and achieves good performance on three diverse data sets with little or no hand tuning. Furthermore, we examine the role different syntactic and semantic features have on performance. We find that semantic features tend to increase performance more than purely syntactic features. Finally, we analyze common causes of misclassification error and provide insight into ways they may be overcome.  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