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   23486篇
  免费   330篇
  国内免费   14篇
教育   16724篇
科学研究   1914篇
各国文化   251篇
体育   2293篇
综合类   7篇
文化理论   212篇
信息传播   2429篇
  2021年   233篇
  2020年   359篇
  2019年   536篇
  2018年   730篇
  2017年   666篇
  2016年   662篇
  2015年   402篇
  2014年   534篇
  2013年   4237篇
  2012年   485篇
  2011年   537篇
  2010年   402篇
  2009年   438篇
  2008年   473篇
  2007年   440篇
  2006年   415篇
  2005年   362篇
  2004年   394篇
  2003年   306篇
  2002年   323篇
  2001年   459篇
  2000年   511篇
  1999年   437篇
  1998年   257篇
  1997年   250篇
  1996年   306篇
  1995年   244篇
  1994年   258篇
  1993年   220篇
  1992年   349篇
  1991年   366篇
  1990年   339篇
  1989年   364篇
  1988年   337篇
  1987年   325篇
  1986年   325篇
  1985年   370篇
  1984年   292篇
  1983年   303篇
  1982年   239篇
  1981年   247篇
  1980年   259篇
  1979年   349篇
  1978年   258篇
  1977年   238篇
  1976年   199篇
  1975年   181篇
  1974年   182篇
  1973年   176篇
  1971年   174篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
891.
The effects on retention of adjunct questions either placed at the end of a passage or inserted after their respective paragraphs within the passage were examined. The high school subjects were encouraged to review the materials after encountering the questions, a departure from traditional procedures in the field. Both treatments led to superior retention of the previously questioned facts when compared to a passage-only control group, but did not increase retention of previously unquestioned facts. The position of the adjunct questions did not differentially affect performance. The discrepancy of the results from those traditionally reported are interpreted in terms of the procedures employed.  相似文献   
892.
A marketing audit enables a library to look at audiences, services, and products with a structured approach. The audit can be used to assess operations and to provide a framework for ongoing decision making, evaluation, and long-range planning. An approach to the audit process is presented and its application is demonstrated in a case study featuring the American Hospital Association Resource Center.  相似文献   
893.
894.
895.
The present study examined the influence of Santa Claus and the Easter Bunny on children's donations near the Easter season. Kindergarten and first-grade children were asked to tell stories about Santa Claus, the Easter Bunny, or pets, for which they received nine pieces of gum. They were then encouraged to donate any amount of their gum to handicapped children. Main effects were found only for grade, with first-grade children donating significantly more than kindergarten children. In addition, a significant interaction was obtained between grade and type of story elicited from the child. This interaction revealed that for kindergarten children, the type of story failed to influence donations, whereas for first-grade children, stories referring to Santa Claus increased donations relative to stories told about the Easter Bunny or pets.  相似文献   
896.
The formal creation of an Integrated Academic Information Management System (IAIMS) at the University of Utah began in the fall of 1983. The keystone of the IAIMS effort is the HELP hospital information system. IAIMS at the University of Utah is a broad-based program extending across the Health Sciences Center and beyond to health professionals throughout the inter-mountain area. This paper describes the background that led to IAIMS, the IAIMS planning process, and the library's participation in this effort.  相似文献   
897.
898.
899.
The need to provide bibliographic access to a collection of original medical illustrations led the Library of the University of California, San Francisco, to search for a bibliographic control system and, not finding a satisfactory one, to develop one of its own, Part 1 of the report details the planning for such a development, including the need for bibliographic control of illustrations, the goals of the proposed system, design decisions and changes required, the type of system chosen, special subjects indexing needs, the required output, and staffing and budgetary needs.  相似文献   
900.
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