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   19408篇
  免费   140篇
  国内免费   7篇
教育   14671篇
科学研究   1672篇
各国文化   161篇
体育   1015篇
综合类   3篇
文化理论   502篇
信息传播   1531篇
  2022年   47篇
  2021年   74篇
  2020年   149篇
  2019年   214篇
  2018年   2405篇
  2017年   2330篇
  2016年   1824篇
  2015年   323篇
  2014年   347篇
  2013年   1895篇
  2012年   435篇
  2011年   899篇
  2010年   1016篇
  2009年   598篇
  2008年   894篇
  2007年   1332篇
  2006年   272篇
  2005年   573篇
  2004年   586篇
  2003年   534篇
  2002年   288篇
  2001年   136篇
  2000年   134篇
  1999年   112篇
  1998年   105篇
  1997年   122篇
  1996年   115篇
  1995年   122篇
  1994年   116篇
  1993年   92篇
  1992年   110篇
  1991年   104篇
  1990年   96篇
  1989年   84篇
  1988年   76篇
  1987年   66篇
  1986年   55篇
  1985年   64篇
  1984年   53篇
  1983年   67篇
  1982年   72篇
  1981年   69篇
  1980年   74篇
  1979年   65篇
  1978年   45篇
  1977年   41篇
  1976年   50篇
  1975年   38篇
  1974年   32篇
  1973年   23篇
排序方式: 共有10000条查询结果,搜索用时 328 毫秒
31.
This study examined the cost and performance of six commercial document suppliers accessible via OCLC, and comapared their service to that of traditional interlibrary loan (ILL). Results indicated that, while commercial firms cannot be recommended as a wholesale replacement for ILL, they can add much-needed flexibility to a library's overall plan for document delivery.  相似文献   
32.
The authors report on a self‐completed questionnaire study from a North Yorkshire based general practice regarding the information needs of its clinicians. The work was carried out with a particular focus on the practice library, and the findings identified that a new approach to maintaining and developing the library was needed. The literature regarding the information needs of primary care clinicians and the role of practice libraries is considered, and compared to those of the clinicians at the practice. Discussion follows on how a collaborative project was set up between the practice and a librarian based at the local NHS Trust library in order to improve the existing practice library. Difficulties encountered and issues unique to the project are explored, including training implications presented by the implementation of electronic resources. Marketing activities implemented are discussed, how the library will operate in its new capacity, and how ongoing support and maintenance of the library will be carried out. It is concluded that although scepticism still exists regarding librarian involvement in practice libraries, collaboration between clinicians and librarians is an effective approach to the successful development and maintenance of a practice library, and recommendations are therefore made for similar collaborative work.  相似文献   
33.
Collaboration in research activity is now the rule not the exception. It is encouraged by government, funding bodies and research councils. However, the concept of collaboration is difficult to define. It occurs at many different levels, driven by a complex research system-policy dynamic. Three different models of collaboration – inter-personal, team and corporate – are identified, each with their own rationale, structure, benefits and costs. The paper examines the institutional implications of these models. It argues that institutions and individual researchers conceptualise and operationalise research collaboration in different ways. Although vital to institutional mission, collaborative research is rarely mapped by senior managers with any precision. In general, institutional approaches to the management of collaborative research lag behind the policy rhetoric. The paper concludes with an overview of the key dilemmas for institutional strategists and policy makers posed by the shift towards more collaborative approaches to research.  相似文献   
34.
The introduction to this article discusses a dilemma facing many Third World countries: should they place computers in their schools and, if so, for what purposes? The author outlines four common rationales—the Social, Vocational, Pedagogical and Catalytic—and refers to two less common ones—the Information Technology Industry and Cost-effectiveness Rationales. The main text describes policy in China at national level, and analyses policy and practice in Beijing City and Zhejiang Province. The paper is based on an international co-operative study of computers in African, Asian and Arabic- speaking schools, funded by the Harold Macmillan Trust.  相似文献   
35.
36.
37.
Co-production occurs when two or more institutions contribute funds and labour to the processes of making course components for distance teaching. The author summarises reasons for international co-production of multimedia distance-teaching courses and provides a checklist of questions that should be considered before entering upon such co-production.
The second half of the article consists of a composite case study based on the UK's Open University experience of international co-production. The paper ends with three questions: Is international co-production of this kind worth trying? Can the chances of success be made high enough by careful planning to justify risking capital in such ventures? Are other forms of collaboration more likely to be cost-effective?  相似文献   
38.
黄维  David 《文化交流》2006,(4):50-52
她是世界上惟一一位集奥赛、世界杯和世锦赛三项冠军于一身的棋手,也是继谢军、诸宸之后的第三位世界“棋后”,她的名字叫许昱华。  相似文献   
39.
40.
Contingent valuation methods (CVM) are now well established as a means of measuring the nonmarket demand for cultural goods and services. When combined with valuations provided through market processes (where relevant), an overall assessment of the economic value of cultural commodities can be obtained. Within a neoclassical framework, such assessments are thought to provide a complete picture of the value of cultural goods. But are there aspects of the value of cultural goods which are not fully captured, or not captured at all, within such a model? This paper argues that CVM provides an incomplete view of the nonmarket value of cultural goods, and that alternative measures need to be developed to provide a fuller account.  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