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   32700篇
  免费   475篇
  国内免费   25篇
教育   22553篇
科学研究   3992篇
各国文化   304篇
体育   2510篇
综合类   15篇
文化理论   245篇
信息传播   3581篇
  2022年   216篇
  2021年   332篇
  2020年   493篇
  2019年   777篇
  2018年   1037篇
  2017年   1012篇
  2016年   860篇
  2015年   551篇
  2014年   821篇
  2013年   6211篇
  2012年   818篇
  2011年   821篇
  2010年   630篇
  2009年   629篇
  2008年   671篇
  2007年   642篇
  2006年   556篇
  2005年   528篇
  2004年   475篇
  2003年   467篇
  2002年   451篇
  2001年   609篇
  2000年   521篇
  1999年   487篇
  1998年   275篇
  1997年   293篇
  1996年   336篇
  1995年   301篇
  1994年   264篇
  1993年   288篇
  1992年   436篇
  1991年   426篇
  1990年   427篇
  1989年   435篇
  1988年   354篇
  1987年   396篇
  1986年   403篇
  1985年   437篇
  1984年   361篇
  1983年   328篇
  1982年   296篇
  1981年   253篇
  1980年   253篇
  1979年   384篇
  1978年   300篇
  1977年   261篇
  1976年   243篇
  1975年   218篇
  1974年   242篇
  1971年   243篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
81.
"The U.S. Bureau of the Census created the State Data Center program in 1978 to improve public access to census information. This article discusses the background, structure, and services of that program; the role of libraries in the program; and future directions in State Data Center/library relationships. The appendix lists contact person names, as well as addresses and telephone numbers for State Data Center lead agencies."  相似文献   
82.
83.
Questions concerning some of the values we hold as librarians and the goals, standards, and other evaluation tools we derive from them are discussed in the context of the history of our profession and the present period of rapid change. The concepts of stable and changing paradigms and of "scientific communities" provide the foundation for consideration of how a changing conceptual framework can affect values and their application in the evaluation process. One of many possible scenarios for the future is briefly outlined to demonstrate how some traditional values may fare.  相似文献   
84.
85.
86.
87.
88.
"Change" is a critical dimension of contemporary experience. Library associations are not exempt, and they change in ways similar to other organizations. According to some authorities, four phases typify the process: diagnosis, design, implementation, and incorporation. Focusing on changes in the Medical Library Association's longstanding program of continuing education, the authors utilize the "phase framework" to chart that association's movement from a management system depending primarily upon volunteers to one in which professional staff figure prominently. The historical review serves a heuristic purpose for individuals and institutions in identifying characteristic features of the change process.  相似文献   
89.
90.
This article reports the results of a survey of literature on measures of library effectiveness. This survey led to the formulation of six criterion concepts (accessibility, cost, user satisfaction, response time, cost/benefit ratio, and use). The advantages and disadvantages of each method of measurement are discussed. Several points which became clear during the analysis are discussed. First, there is a relative lack of concern with the rationale behind the evaluation process, although the results invariably lead to a confused interpretation when there is no clear understanding of the purpose of an evaluation. Second, the total library system is rarely considered; instead, each evaluation criterion is taken in isolation rather than as part of the whole. Third, the library's preservation function has not been considered at all.  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