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   26733篇
  免费   377篇
  国内免费   60篇
教育   19112篇
科学研究   2279篇
各国文化   507篇
体育   2035篇
综合类   46篇
文化理论   186篇
信息传播   3005篇
  2022年   173篇
  2021年   309篇
  2020年   425篇
  2019年   657篇
  2018年   856篇
  2017年   903篇
  2016年   813篇
  2015年   539篇
  2014年   683篇
  2013年   5240篇
  2012年   666篇
  2011年   679篇
  2010年   599篇
  2009年   573篇
  2008年   636篇
  2007年   609篇
  2006年   596篇
  2005年   524篇
  2004年   426篇
  2003年   372篇
  2002年   331篇
  2001年   498篇
  2000年   450篇
  1999年   396篇
  1998年   240篇
  1997年   241篇
  1996年   237篇
  1995年   210篇
  1994年   219篇
  1993年   218篇
  1992年   339篇
  1991年   341篇
  1990年   372篇
  1989年   358篇
  1988年   277篇
  1987年   288篇
  1986年   289篇
  1985年   323篇
  1984年   299篇
  1983年   282篇
  1982年   224篇
  1981年   214篇
  1980年   219篇
  1979年   315篇
  1978年   244篇
  1977年   203篇
  1976年   193篇
  1975年   175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.
72.
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   
73.
74.
75.
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   
76.
77.
78.
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   
79.
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   
80.
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   
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