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   2889篇
  免费   61篇
  国内免费   1篇
教育   2415篇
科学研究   51篇
各国文化   44篇
体育   93篇
综合类   1篇
文化理论   10篇
信息传播   337篇
  2021年   42篇
  2020年   43篇
  2019年   72篇
  2018年   99篇
  2017年   110篇
  2016年   107篇
  2015年   75篇
  2014年   105篇
  2013年   617篇
  2012年   89篇
  2011年   85篇
  2010年   67篇
  2009年   94篇
  2008年   95篇
  2007年   79篇
  2006年   54篇
  2005年   74篇
  2004年   86篇
  2003年   58篇
  2002年   54篇
  2001年   46篇
  2000年   51篇
  1999年   53篇
  1998年   41篇
  1997年   41篇
  1996年   52篇
  1995年   39篇
  1994年   40篇
  1993年   35篇
  1992年   47篇
  1991年   38篇
  1990年   30篇
  1989年   19篇
  1988年   21篇
  1987年   14篇
  1986年   17篇
  1985年   19篇
  1984年   20篇
  1983年   18篇
  1982年   14篇
  1981年   18篇
  1980年   12篇
  1979年   15篇
  1978年   14篇
  1977年   11篇
  1976年   17篇
  1975年   15篇
  1974年   14篇
  1970年   13篇
  1966年   9篇
排序方式: 共有2951条查询结果,搜索用时 15 毫秒
11.
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   
12.
13.
14.
15.
16.
17.
Video market entry options available to telephone companies under the Telecommunications Act of 1996 have First Amendment implications that will affect the constitutional value of telephone video. These entry options impose regulatory constraints upon providers and differ in potentials for provider speech, speaker access, and content diversity. The author concludes that the Act's open video system option best advances First Amendment interests in increased diversity of and access to speech.  相似文献   
18.
19.
In 2013, The Better Image (TBI) was contacted to examine A Play of Selves, a unique work created by artist Cindy Sherman during her graduate studies in 1975. The work is composed of 244 paper doll-like photographs of Sherman that are presented within 72 frames. During initial condition checks, it was noted that a number of individual elements had begun to show signs of chemical staining. Over the course of 2013/2014, a collaborative response was developed with the help of the artist, the artist's printer, the representing gallery, TBI staff and the owner. The main goal was to address the physical and chemical issues present and preserve this work for future exhibition and study. Determining an effective decision- making model based on a hierarchy of values was crucial before undertaking any conservation treatment, as there were several invested parties, each with a different perspective. The focus of this paper is the interplay of our responsibilities as conservators with the concerns of the artist, her gallery, her printer, and the owner to balance aesthetic vs. physical integrity of the artwork, reversibility of treatments, importance of record keeping while developing a balanced response within a world of rapidly disappearing traditional photographic papers.  相似文献   
20.
Introduction     
  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