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   1299篇
  免费   36篇
  国内免费   4篇
教育   1000篇
科学研究   90篇
各国文化   23篇
体育   81篇
综合类   1篇
文化理论   17篇
信息传播   127篇
  2021年   18篇
  2020年   13篇
  2019年   24篇
  2018年   44篇
  2017年   34篇
  2016年   47篇
  2015年   24篇
  2014年   48篇
  2013年   341篇
  2012年   19篇
  2011年   29篇
  2010年   22篇
  2009年   27篇
  2008年   34篇
  2007年   30篇
  2006年   30篇
  2005年   27篇
  2004年   18篇
  2003年   22篇
  2002年   24篇
  2001年   15篇
  2000年   14篇
  1999年   15篇
  1998年   10篇
  1997年   18篇
  1996年   11篇
  1995年   16篇
  1994年   15篇
  1993年   16篇
  1992年   9篇
  1991年   15篇
  1990年   12篇
  1989年   14篇
  1988年   10篇
  1987年   7篇
  1986年   7篇
  1985年   16篇
  1984年   11篇
  1983年   28篇
  1982年   20篇
  1981年   12篇
  1980年   7篇
  1979年   16篇
  1978年   12篇
  1977年   11篇
  1975年   8篇
  1974年   12篇
  1973年   12篇
  1972年   7篇
  1970年   7篇
排序方式: 共有1339条查询结果,搜索用时 15 毫秒
1.
This article begins with an analysis of reliability and usability in the mathematical literature. Mathematical practice is seen to be adapted to very high standards in these respects, and quite sensitive to even modest declines in quality. Unfortunately most scenarios for the transition to electronic publication suggest serious loss of quality. This is a problem special to mathematics: other sciences are adapted to lower standards, and should be much less sensitive to changes. Some ways to prevent this decline are suggested. A condensed version of this article appeared inNotices of the American Mathematical Society, 42, 1, January 1995. Published with permission of the American Mathematical Society.  相似文献   
2.
Cain  Frank 《Minerva》2002,40(3):315-325
  相似文献   
3.
4.
Anonymous personalization in collaborative web search   总被引:2,自引:0,他引:2  
We present an innovative approach to Web search, called collaborative search, that seeks to cope with the type of vague queries that are commonplace in Web search. We do this by leveraging the search behaviour of previous searchers to personalize future result-lists according to the implied preferences of a community of like-minded individuals. This technique is implemented in the I-SPY meta-search engine and we present the results of a live-user trial which indicates that I-SPY can offer improved search performance when compared to a benchmark search engine, across a variety of performance metrics. In addition, I-SPY achieves its level of personalization while preserving the anonymity of individual users, and we argue that this offers unique privacy benefits compared to alternative approaches to personalization.  相似文献   
5.
ABSTRACT

Open education resources represent a great opportunity to reduce textbook costs, but many of them have not been evaluated for quality. Librarians and former students in an introduction to engineering course collected and evaluated open education resources to supplement the course textbook in future semesters. Both searching for and evaluating these resources created opportunities for the librarians to evaluate information literacy skills of these students and to provide instruction to improve these skills.  相似文献   
6.
7.
8.
Using a participatory learning approach, we report on the delivery and evaluation of a climate change and risk assessment tool to help manage water risks within the agricultural sector. Post-graduate water-professional students from a range of countries, from both developed and emerging economies were involved in using this tool. Our approach included participative learning tools – group discussion, software, and risk matrices. The materials developed met the needs of the students, allowing these students to incorporate their learning and adapt the package of materials for use in their home countries. Analysis of evaluations show that the tools and materials are particularly useful and emphasizes the need for sound learning materials and tools, funding to deliver training, and policy support to accelerate education and adoption of authentic climate change adaptation practices. The expected benefits for water professionals about climate change will be translated into improved socioeconomic and environmental outcomes if adopted.  相似文献   
9.
10.
This article responds to attitudes about giftedness in M. Sapon‐Shevin's article, “Explaining Giftedness to Parents: Why it Matters What Professionals Say.” Giftedness is not a reward or a privilege, but an aspect of a child's individuality that should be understood and taken into account by the educational system. Gifted children's needs are not solely academic, and it is parents who are responsible for meeting those needs. They need information from as many sources as possible. They are also excellent sources of information themselves, so the relationship between professionals and parents should be reciprocal. This article also responds to some of Sapon‐Shevin's objections to the book Guiding the Gifted Child, (Webb, Meckstroth, Tolan, 1982). In the preparation of this article, the writer worked closely with coauthors James T. Webb and Elizabeth Meckstroth, whose pioneering work with the SENG Project at Wright State University provided the basis of Guiding the Gifted Child.  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