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   4999篇
  免费   78篇
  国内免费   4篇
教育   3692篇
科学研究   314篇
各国文化   89篇
体育   413篇
综合类   1篇
文化理论   42篇
信息传播   530篇
  2022年   21篇
  2021年   52篇
  2020年   86篇
  2019年   152篇
  2018年   175篇
  2017年   195篇
  2016年   161篇
  2015年   115篇
  2014年   167篇
  2013年   1191篇
  2012年   155篇
  2011年   135篇
  2010年   106篇
  2009年   127篇
  2008年   150篇
  2007年   133篇
  2006年   129篇
  2005年   118篇
  2004年   118篇
  2003年   102篇
  2002年   100篇
  2001年   72篇
  2000年   81篇
  1999年   83篇
  1998年   52篇
  1997年   52篇
  1996年   66篇
  1995年   53篇
  1994年   56篇
  1993年   44篇
  1992年   57篇
  1991年   41篇
  1990年   52篇
  1989年   48篇
  1988年   47篇
  1987年   34篇
  1986年   34篇
  1985年   27篇
  1984年   27篇
  1983年   17篇
  1982年   32篇
  1981年   30篇
  1980年   26篇
  1979年   15篇
  1978年   23篇
  1977年   17篇
  1976年   26篇
  1975年   17篇
  1974年   26篇
  1973年   19篇
排序方式: 共有5081条查询结果,搜索用时 14 毫秒
1.
Research in Higher Education - Increasingly, undergraduates take more than 4 years to complete a baccalaureate, a situation widely perceived as a waste of time and money, for students,...  相似文献   
2.
3.
The emerging creative practices of digital collections are increasing in prominence thanks to the access to, and appeal of, data visualizations. Interactive data visualizations, such as a map, timeline, chart, graph, or artist’s rendering of data, enable users to pursue their own research interests within a collection and participate in new areas of research. Use of these data visualizations enhances the scope of the collection and enables a modern and diverse thematic collection to emerge. This article considers the question: Does the addition of data visualizations affect how users participate with a research collection? Impacts on collection development, application of user-centered design, and analysis of users’ exploratory strategies are discussed. Examples of data visualizations used in digital humanities projects and digital collections are presented as case studies.  相似文献   
4.
In the IR field it is clear that the value of a system depends on the cost and benefit profiles of its users. It would seem obvious that different users would prefer different systems. In the TREC-9 filtering track, systems are evaluated by a utility measure specifying a given cost and benefit. However, in the study of decision systems it is known that, in some cases, one system may be unconditionally better than another. In this paper we employ a decision theoretic approach to find conditions under which an Information Filtering (IF) system is unconditionally superior to another for all users regardless of their cost and benefit profiles.It is well known that if two IF systems have equal precision the system with better recall will be preferred by all users. Similarly, with equal recall, better precision is universally preferred. We confirm these known results and discover an unexpected dominance relation in which a system with lower recall will be universally preferred provided its precision is sufficiently higher.  相似文献   
5.
The economic success of some of the countries within the East Asian region has generated a range of studies which have attempted to identify the sources of that growth. One strand within these analyses has focused on the critical role of schooling in the accumulation of human capital. This paper examines the role which education has played in the rapid development of the four 'Asian Tigers'; namely: Hong Kong, Taiwan, South Korea and Singapore. It is argued that whilst patterns of educational provision displayed some common features there were also significant differences in other areas such as the role of the state, sources of educational funding, the role of technical education and of the school curriculum.  相似文献   
6.
Our argument in this paper is that the model of literary progression which Bakhtin (1981, 1986) expounds in his writing on the chronotope can generate insight into the processes through which pupils improve their writing. We suggest more generally that there are concepts and clues in Bakhtin's historical model of the development of the European novel and in his theory of dialogue which can be helpful in both the evaluation and teaching of classroom writing.  相似文献   
7.
8.
9.
10.
For centuries publishers have acted as intermediaries between author and audience. Copyright, like freedom of expression, is an essential element of freedom in this role, because without it authors' rights are not fully protected. Only when they are protected against theft and other economic or moral infringements are authors free to express themselves without fear. Publishers, too, rely on copyright to protect their investments and their freedom Paul Nijhoff Asser has been secretary of the International Group of Scientific, Technical and Medical Publishers (STM), Amsterdam, since 1970. He has been active in publishing and bookselling for more than forty years. This article was adapted from a presentation at the seminar “East Meets West: Copyright and the Publisher in a Market Economy”, Hamburg, March 1991.  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