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   2996篇
  免费   78篇
  国内免费   22篇
教育   2286篇
科学研究   226篇
各国文化   48篇
体育   106篇
综合类   19篇
文化理论   19篇
信息传播   392篇
  2023年   12篇
  2022年   23篇
  2021年   44篇
  2020年   39篇
  2019年   71篇
  2018年   85篇
  2017年   115篇
  2016年   84篇
  2015年   69篇
  2014年   109篇
  2013年   645篇
  2012年   103篇
  2011年   113篇
  2010年   90篇
  2009年   121篇
  2008年   93篇
  2007年   115篇
  2006年   117篇
  2005年   92篇
  2004年   92篇
  2003年   68篇
  2002年   82篇
  2001年   42篇
  2000年   41篇
  1999年   34篇
  1998年   39篇
  1997年   39篇
  1996年   37篇
  1995年   47篇
  1994年   25篇
  1993年   24篇
  1992年   32篇
  1991年   22篇
  1990年   30篇
  1989年   16篇
  1988年   23篇
  1987年   17篇
  1986年   17篇
  1985年   26篇
  1984年   23篇
  1983年   22篇
  1982年   14篇
  1981年   20篇
  1980年   8篇
  1979年   13篇
  1978年   10篇
  1977年   15篇
  1976年   14篇
  1974年   7篇
  1971年   7篇
排序方式: 共有3096条查询结果,搜索用时 15 毫秒
21.
In 2008 Meier and Conkling first tested Google Scholar's coverage of the engineering literature against citations gathered from the Compendex database. Since that time, other studies have used the same methodology and found improvement in Google Scholar's coverage. This study uses engineering dissertations from Proquest Dissertations & Theses to create a data set of citations for the comparison of fee-based databases, Compendex and Scopus, against Google Scholar. From 1950 to 2017 Google Scholar outperformed both Compendex and Scopus in discoverability of citations in nine engineering subjects. These results have implications for collection management and information literacy program planning for librarians.  相似文献   
22.
23.
24.
25.
26.
This single-case meta-analysis is the first to provide a quantitative synthesis of the published literature on mathematics word problem-solving intervention studies for English learners with learning disabilities and mathematics difficulties. A total of ten single-subject studies were included for analysis. The current study investigated the magnitude of the effect of mathematics interventions targeting the improvement of students’ mathematics word problem-solving performance, and analyzed variables that moderated this effect. Results indicate a moderate overall effect size of 0.81 (95% CI [0.71, 0.90]) on word problem-solving performance for English learners with learning disabilities and mathematics difficulties. Moderator variables such as the implementer of the interventions, instructional focus, and word problem-solving content significantly moderated the mathematics intervention effects.  相似文献   
27.
In fall 2016, the Columbia-Cornell collaboration in the area of Slavic & East European resource coordination and sharing celebrated its sixth year. The author reviews particulars of the development, implementation, and function of this program as well as some of the challenges that face such cross-institutional efforts.  相似文献   
28.
29.
Although creativity and expertise are related, they are nonetheless very different things. Expertise does not usually require creativity, but creativity generally does require a certain level of expertise. There are similarities in the relationships of both expertise and creativity to domains, however. Research has shown that just as expertise in one domain does not predict expertise in other, unrelated domains, creativity in one domain does not predict creativity in other, unrelated domains. People may be expert, and people may be creative, in many domains, or they may be expert, or creative, in few domains or none at all, and one cannot simply transfer expertise, or creativity, from one domain to another, unrelated domain. The domain specificity of creativity matters crucially for creativity training, creativity assessment, creativity research, and creativity theory. The domain specificity of creativity also means that interdisciplinary thinking, interdisciplinary collaboration, and interdisciplinary creativity are even more important than one would assume if creativity were domain general.  相似文献   
30.
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