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   125672篇
  免费   1912篇
  国内免费   238篇
教育   87615篇
科学研究   13622篇
各国文化   2051篇
体育   9614篇
综合类   173篇
文化理论   1146篇
信息传播   13601篇
  2021年   959篇
  2020年   1728篇
  2019年   2660篇
  2018年   3181篇
  2017年   3480篇
  2016年   3513篇
  2015年   2406篇
  2014年   3287篇
  2013年   28018篇
  2012年   2453篇
  2011年   2803篇
  2010年   2416篇
  2009年   2693篇
  2008年   2486篇
  2007年   2184篇
  2006年   2440篇
  2005年   2402篇
  2004年   3064篇
  2003年   2429篇
  2002年   2208篇
  2001年   2076篇
  2000年   1734篇
  1999年   1591篇
  1998年   1503篇
  1997年   1562篇
  1996年   1751篇
  1995年   1530篇
  1994年   1514篇
  1993年   1510篇
  1992年   1529篇
  1991年   1444篇
  1990年   1433篇
  1989年   1355篇
  1988年   1206篇
  1987年   1135篇
  1986年   1162篇
  1985年   1427篇
  1984年   1299篇
  1983年   1304篇
  1982年   1276篇
  1981年   1193篇
  1980年   1188篇
  1979年   1238篇
  1978年   1216篇
  1977年   1120篇
  1976年   1020篇
  1975年   817篇
  1974年   808篇
  1973年   778篇
  1971年   638篇
排序方式: 共有10000条查询结果,搜索用时 234 毫秒
231.
232.
233.
This study examined the cost and performance of six commercial document suppliers accessible via OCLC, and comapared their service to that of traditional interlibrary loan (ILL). Results indicated that, while commercial firms cannot be recommended as a wholesale replacement for ILL, they can add much-needed flexibility to a library's overall plan for document delivery.  相似文献   
234.
The authors report on a self‐completed questionnaire study from a North Yorkshire based general practice regarding the information needs of its clinicians. The work was carried out with a particular focus on the practice library, and the findings identified that a new approach to maintaining and developing the library was needed. The literature regarding the information needs of primary care clinicians and the role of practice libraries is considered, and compared to those of the clinicians at the practice. Discussion follows on how a collaborative project was set up between the practice and a librarian based at the local NHS Trust library in order to improve the existing practice library. Difficulties encountered and issues unique to the project are explored, including training implications presented by the implementation of electronic resources. Marketing activities implemented are discussed, how the library will operate in its new capacity, and how ongoing support and maintenance of the library will be carried out. It is concluded that although scepticism still exists regarding librarian involvement in practice libraries, collaboration between clinicians and librarians is an effective approach to the successful development and maintenance of a practice library, and recommendations are therefore made for similar collaborative work.  相似文献   
235.
236.
237.
This article focuses on several conceptual and structural issues that are central to copyright compliance in the electronic age. It presumes the development of a national electronic network for storing, organizing, accessing, managing, and charging for information. The article first discusses the implications of constructing a comprehensive electronic “highway,” or Digital Library System (DLS), which would link information to the widespread community of users. It then presents the ramifications of a highly decentralized set of subsystems serving rights holders and users, linked by protocols established by the DLS. A discussion of the implications of digital interchangeability for copyright follows. The article ends with an analysis of alternatives to existing intellectual property rights conveyance systems, and concludes that current ownership structures, and systems for conveying rights and royalties, will remain the foundation for copyright in the electronic world. This article appeared in a slightly different form in theProceedings of the Twelfth National Online Meeting—1991, and is published here with the permission of Learned Information, Inc., Medford, N.J.  相似文献   
238.
In recent years university presses have undergone some significant changes, such as expansion of their scope to include materials that may have appeal beyond the scholarly market. This article investigates, through the use of a survey of university libraries, the acquisition of university press products by libraries. In general, recent years have been changes in the relationship between university presses and libraries that have resulted in fewer items being purchased by the libraries.  相似文献   
239.
DOCILE BODIES AND DISEMBODIED MINDS   总被引:1,自引:0,他引:1  
  相似文献   
240.
论体育教育专业改革的职业需求适应性   总被引:1,自引:0,他引:1  
体育教育专业在培养中小学体育师资方面起着重要的作用,因而,体育教育专业的培养目标和教学模式必须适应现代社会的需求,适应中小学体育教学.21世纪中小学体育必将进行一系列的改革.分析了中小学体育的教学目标、教学方法和课程设置,同时对体育教育专业改革的若干方面进行了探讨.  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