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   26206篇
  免费   358篇
  国内免费   59篇
教育   18714篇
科学研究   2245篇
各国文化   497篇
体育   2001篇
综合类   47篇
文化理论   166篇
信息传播   2953篇
  2022年   174篇
  2021年   287篇
  2020年   405篇
  2019年   597篇
  2018年   803篇
  2017年   844篇
  2016年   802篇
  2015年   524篇
  2014年   673篇
  2013年   5078篇
  2012年   667篇
  2011年   674篇
  2010年   580篇
  2009年   569篇
  2008年   630篇
  2007年   602篇
  2006年   581篇
  2005年   521篇
  2004年   427篇
  2003年   369篇
  2002年   329篇
  2001年   496篇
  2000年   444篇
  1999年   388篇
  1998年   238篇
  1997年   236篇
  1996年   239篇
  1995年   211篇
  1994年   222篇
  1993年   213篇
  1992年   336篇
  1991年   338篇
  1990年   361篇
  1989年   357篇
  1988年   277篇
  1987年   285篇
  1986年   284篇
  1985年   321篇
  1984年   296篇
  1983年   280篇
  1982年   224篇
  1981年   214篇
  1980年   216篇
  1979年   313篇
  1978年   239篇
  1977年   201篇
  1976年   196篇
  1975年   173篇
  1974年   185篇
  1971年   177篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
71.
Computers are integral to medical practice, education, and research. While medical students learn computer skills during their training, many practicing physicians do not have the same computer experience. To familiarize this group with the exciting developments in medical informatics, the Himmelfarb Health Sciences Library and Department of Computer Medicine at the George Washington University Medical Center organized a workshop "Introducing Your Office Computer!" for attending physicians. The workshop featured a short lecture/video presentation on computer applications in medicine followed by a "computer fair" of five computer applications. Eleven physicians attended the workshop. Feedback was very positive; many called later to request more detailed instructions on using the programs demonstrated. It was a valuable experience for the staff, and new bridges were built between departments and clients.  相似文献   
72.
73.
74.
Fielding H. Garrison's paper "The medical periodical and the scientific society" cited the Buffalo Medical Journal in the company of eminent periodicals published in Berlin, Boston, and Edinburgh. This article provides an overview of the Journal and places it in context of 19th-century medical journalism. The Journal is assessed in terms of original scientific contributions and as a source of social and local history.  相似文献   
75.
76.
77.
This paper supplements information given in earlier papers on the UCLA MEDLARS Search Station. Four major machine problem areas in the operation of a decentralized station are identified: adjustments required to run a large information retrieval type program in an academic computing facility serving many users; handicap in running time for COBOL programs; advent of the third generation of computers with attendant preparation; and need for constant current communication among all members of a decentralized network system. Statistics are given for the initial operating period, January-May 1966: 119 search requests received, 109 formulated, and 60 fully processed. Parallel searches with other MEDLARS installations, comparisons of MEDLARS and manual Index Medicus searches, and other search activities are reported.  相似文献   
78.
Adequate research in the peripheral field of medical geography requires familiarity with the literature of medicine, geography, and other environmentally oriented fields. The pertinent literature of the two primary disciplines, as well as that of anthropology, nutrition, and human bioclimatology, is surveyed from a bibliographical point of view. A brief review of historical sources is presented, followed by a discussion of the contemporary organizations, both international and national, active in the field. Emphasis is placed on the publishing programs and projects, maps, atlases, symposia, reports, and other literature sponsored or stimulated by these organizations. Regional bibliographical surveys for East Africa, India, and the Soviet Union are also noted. Pertinent aspects of bibliographies, indexes, abstracts, library card catalogs and accession lists, and other resources are listed, with emphasis on the various subject headings and other approaches to them. Throughout, the sources of information are approached from a multidisciplinary and interdisciplinary viewpoint.  相似文献   
79.
The preliminary building program suggested in this paper makes use of outlines, graphs, charts, and lists, rather than long-winded paragraphs, to describe the needs, objectives, and philosophy of the library. It is hoped that a short, concise, but detailed, report using these methods will save time and make the report more attractive to read, thereby encouraging the many people who will need to assist in the building planning to use the report.  相似文献   
80.
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