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   32521篇
  免费   420篇
  国内免费   23篇
教育   22860篇
科学研究   3113篇
各国文化   370篇
体育   2785篇
综合类   12篇
文化理论   288篇
信息传播   3536篇
  2021年   282篇
  2020年   448篇
  2019年   664篇
  2018年   881篇
  2017年   862篇
  2016年   825篇
  2015年   515篇
  2014年   710篇
  2013年   6106篇
  2012年   640篇
  2011年   683篇
  2010年   528篇
  2009年   579篇
  2008年   636篇
  2007年   594篇
  2006年   565篇
  2005年   484篇
  2004年   510篇
  2003年   413篇
  2002年   431篇
  2001年   558篇
  2000年   624篇
  1999年   542篇
  1998年   335篇
  1997年   322篇
  1996年   384篇
  1995年   312篇
  1994年   354篇
  1993年   316篇
  1992年   463篇
  1991年   494篇
  1990年   464篇
  1989年   493篇
  1988年   442篇
  1987年   426篇
  1986年   442篇
  1985年   496篇
  1984年   432篇
  1983年   428篇
  1982年   348篇
  1981年   365篇
  1980年   358篇
  1979年   479篇
  1978年   388篇
  1977年   336篇
  1976年   292篇
  1975年   271篇
  1974年   256篇
  1973年   264篇
  1971年   240篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
131.
132.
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   
133.
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   
134.
Before planning for provision of Consumer Health Information Services, the librarian and administration must anticipate the problems encountered in sharing funds, personnel, space, and materials with an existing medical or patient education library. Establishing new space within or outside the hospital, or participating in community projects which meet consumer health information needs, are important considerations for planners. This article sets forth the place of some CHI services in the hospital setting, and how they relate to other library services. Differences between hospital library support for Patient Education and for Consumer Health Information services are discussed.  相似文献   
135.
136.
Traditionally, clippings of newspaper articles, pictures from magazines, pamphlets, charts, graphs, posters, proceedings, or copies thereof, and other miscellaneous information sources have been stored in vertical files in libraries. The practice of creating and maintaining vertical files is extremely time consuming. In a medical library, in particular, old information about diagnosis, treatment, and prognosis can quickly become incorrect, misleading, and possibly harmful. Adequately tending to the vertical files can require a librarian to create a balancing act between properly maintaining vertical files and meeting the needs of the users in other areas of the library. The maintenance of vertical files is, by nature, highly consumptive of paper and space consuming. A reasonable alternative to the traditional vertical files is the World-Wide Web. Search engines exist for locating specific information, and bookmarks and/or links which point users to particularly useful sites can be set in search software. Some methods for searching are discussed, and a variety of World-Wide Web information sources are offered.  相似文献   
137.
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   
138.
One of the highest priorities in today's hospitals is the provision of quality care to patients. The medical librarian has an increased responsibility to furnish quality information to the medical staff. Traditional methods of reference service continue to work well, but it is increasingly important for librarians to become more directly involved in hospital quality assurance (QA) activities. Occurrence screening is one system of QA where the librarian can make a difference.  相似文献   
139.
140.
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