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   123839篇
  免费   1617篇
  国内免费   279篇
教育   86185篇
科学研究   13415篇
各国文化   1982篇
体育   9397篇
综合类   204篇
文化理论   1062篇
信息传播   13490篇
  2021年   971篇
  2020年   1654篇
  2019年   2556篇
  2018年   3068篇
  2017年   3339篇
  2016年   3387篇
  2015年   2325篇
  2014年   3207篇
  2013年   27268篇
  2012年   2431篇
  2011年   2797篇
  2010年   2411篇
  2009年   2685篇
  2008年   2451篇
  2007年   2189篇
  2006年   2478篇
  2005年   2447篇
  2004年   3032篇
  2003年   2345篇
  2002年   2156篇
  2001年   2077篇
  2000年   1675篇
  1999年   1567篇
  1998年   1460篇
  1997年   1514篇
  1996年   1689篇
  1995年   1463篇
  1994年   1464篇
  1993年   1468篇
  1992年   1501篇
  1991年   1416篇
  1990年   1438篇
  1989年   1329篇
  1988年   1193篇
  1987年   1129篇
  1986年   1158篇
  1985年   1417篇
  1984年   1293篇
  1983年   1273篇
  1982年   1254篇
  1981年   1183篇
  1980年   1157篇
  1979年   1250篇
  1978年   1215篇
  1977年   1120篇
  1976年   1001篇
  1975年   810篇
  1974年   811篇
  1973年   782篇
  1971年   637篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
251.
252.
253.
The purpose of the study was to identify the pattern of publication about women and AIDS in scientific journals. Bradford zones were identified in each of six databases. The study determined that journal scatter for this subset of AIDS literature differed from the scatter in the general literature; further, the information indexed in the six electronic sources demonstrated little overlap. Consequently, key journal and newsletter titles identified by this study should form the core of any collection focusing on women and AIDS. The assurance of quality patient care management demands that librarians consult multiple resources for information retrieval that can assist health care providers, patients, and caregivers to enhance quality of life as well as to provide optimum care.  相似文献   
254.
The Impact of Museum Purchase on the Auction Prices of Paintings   总被引:1,自引:1,他引:0  
This study examines how art museumspurchasing policy influences the auction prices ofpaintings. Using a cross section of non-speculativetransactions during the period 1820–1970, we findconsiderable empirical support for the hypothesisthat public museums outside the U.S. pay above averageprices in auction markets providing higher thanaverage yields to private sellers. The typical U.S.private museums appear to be more restricted byfinancial constraints and the development of thegeneral economic conditions than their publiccounterparts.  相似文献   
255.
256.
In the final scene of Raiders of the Lost Ark, a crate containing the object of Indiana Jones' quest is wheeled into an immense warehouse for indefinite storage and questionable research access. Unfortunately, this fate is not all that far from reality. Collections of archaeological and ethnographic materials ranging from stone axes, broken potsherds, and carved monuments to baskets, ceremonial masks, and skin canoes have been held by museums collections since the Renaissance. However, their inestimable value and unique conservation and curatorial requirements often conspire to remove them from the reach of all but the most diligent scholars. The potential of the Web to enhance the quality of research on archaeological and ethnographic collections is enormous. This paper will examine ways that one can use the Web to enhance research and improve access to a variety of materials; while there are many other resources for archaeology available on the Web, this paper focusses on museum-related sites. It will also explore the potential of the Web for innovative research strategies. Digitization of catalogs, associated documents, and images to help one locate and study collections and specific artifacts are just one approach. Others include the connection of devices to the Web, such as cameras and microscopes, the creation of virtual reference collections, and the establishment of research networks that will enhance the identification and analysis of material culture. This paper will also consider the role the Web could play in issues of cultural property, contributing to and in many ways intensifying ongoing debates of ownership, curation, conservation, and repatriation of sensitive materials.  相似文献   
257.
This is an update of an earlier article listing directories, journal articles, and general books that aid the librarian, resident, or medical student in finding information on residency and fellowship programs. The article also gives suggestions for building a file of program catalogs related to residencies, fellowships, and clerkships and related materials.  相似文献   
258.
259.
260.
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