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   9024篇
  免费   107篇
  国内免费   18篇
教育   6076篇
科学研究   1028篇
各国文化   90篇
体育   992篇
综合类   6篇
文化理论   96篇
信息传播   861篇
  2021年   69篇
  2020年   122篇
  2019年   175篇
  2018年   237篇
  2017年   252篇
  2016年   218篇
  2015年   153篇
  2014年   216篇
  2013年   1689篇
  2012年   200篇
  2011年   196篇
  2010年   169篇
  2009年   152篇
  2008年   169篇
  2007年   193篇
  2006年   160篇
  2005年   150篇
  2004年   141篇
  2003年   168篇
  2002年   138篇
  2001年   157篇
  2000年   157篇
  1999年   155篇
  1998年   72篇
  1997年   70篇
  1996年   106篇
  1995年   76篇
  1994年   92篇
  1993年   82篇
  1992年   149篇
  1991年   140篇
  1990年   135篇
  1989年   127篇
  1988年   104篇
  1987年   106篇
  1986年   129篇
  1985年   123篇
  1984年   102篇
  1983年   124篇
  1982年   102篇
  1981年   97篇
  1980年   80篇
  1979年   154篇
  1978年   103篇
  1977年   93篇
  1976年   97篇
  1975年   68篇
  1974年   86篇
  1972年   68篇
  1971年   64篇
排序方式: 共有9149条查询结果,搜索用时 46 毫秒
31.
32.
Since a sizeable hospital must have a library, it must have a library committee. Like all hospital committees, this one is to help maintain standards of medical care and to mediate between staff and administration. Unlike others, it clusters around one elected member (the chairman) and one employee (the librarian). A dynamic librarian can, and should, influence and inspire the committee's deliberations; and must be able to depend upon the support of the physician members of the committee.  相似文献   
33.
Cancelled charge slips collected over a one-year period supply the data for this analysis of circulation in the Yale Medical Library. Full-time teaching faculty are the heaviest users of journal literature, and students, of monograph literature. Faculties of Medical School departments are compared in terms of their use of material in individual subjects. Subject literatures are analyzed in terms of groups of users borrowing from them. The extent to which journal titles used by medical students are also used by Medical School faculty is examined. One of the products of the study is a rank list of journal titles used in the Library. Results are presented in several tables.  相似文献   
34.
35.
36.
37.
38.
At this critical point in its development as a burgeoning market economy ensconced within a socialist political system, China faces a dilemma in becoming a fully‐fledged player in the copyright arena. Over the past two decades, China has made great strides in creating a legal and governmental framework for the administration and enforcement of copyright. But its implementation has left much to be desired, owing partly to inadequate resources of money and personnel, partly to insufficiently harsh penalties for infringement, partly to cumbersome procedures required to bring action against infringers, and partly to a general cultural tolerance for practices that run contrary to cultivating a broad‐based respect for copyright. This article proposes that a balance of pressure and encouragement is likely to have the best chances of success in overcoming these problems and ensuring that China will become fully welcomed into the international publishing community.  相似文献   
39.
40.
The necessity for publishing a separate abstract journal on spintronics, which is a new, rapidly developing branch of physics, is substantiated. The interest in spintronics, which is the study of fundamental processes involving the simultaneous transport of both electron charge and electron spins in solids, as well as the interaction of electrons with a magnetic grating, is determined not only by its fascinating prospects but also the results that have already achieved. The spin and charge “degrees of freedom” open possibilities for the creation of semiconducting devices with parameters that are much superior to the existing ones and also the construction of devices that do not have analogues at present. First of all, this will permit problems of information transmission and processing to be solved in a new way. A detailed rubrication on spintronics is given in order to discuss the possibility of publishing a separate edition of an abstract journal devoted to spintronics.  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