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   1016篇
  免费   15篇
教育   807篇
科学研究   32篇
各国文化   4篇
体育   103篇
文化理论   13篇
信息传播   72篇
  2024年   2篇
  2023年   11篇
  2022年   14篇
  2021年   20篇
  2020年   35篇
  2019年   55篇
  2018年   93篇
  2017年   78篇
  2016年   64篇
  2015年   37篇
  2014年   68篇
  2013年   210篇
  2012年   22篇
  2011年   18篇
  2010年   38篇
  2009年   27篇
  2008年   27篇
  2007年   21篇
  2006年   20篇
  2005年   10篇
  2004年   18篇
  2003年   11篇
  2002年   3篇
  2001年   14篇
  2000年   19篇
  1999年   13篇
  1998年   4篇
  1997年   3篇
  1996年   5篇
  1995年   5篇
  1994年   4篇
  1993年   4篇
  1992年   3篇
  1991年   5篇
  1989年   3篇
  1988年   2篇
  1987年   4篇
  1985年   3篇
  1982年   2篇
  1981年   2篇
  1979年   2篇
  1977年   2篇
  1975年   2篇
  1974年   3篇
  1973年   2篇
  1972年   3篇
  1919年   1篇
  1918年   1篇
  1904年   1篇
  1890年   1篇
排序方式: 共有1031条查询结果,搜索用时 234 毫秒
971.
The German archival law is established by the archives acts of the Federal Republic of Germany and the 16 federal states. The core elements of the German archives acts are the transfer of records from public authorities to public archives and the access to records transferred to public archives.  相似文献   
972.
973.
OBJECTIVE: This case study examined children's reports from an obscene phone call (i.e., a verbal sexual abuse). We investigated which type of information the children reported, the completeness and accuracy of the children's statements, and whether there were systematic patterns in terms of memory distortions and omissions. METHOD: The completeness and the accuracy of the children's statements were examined by matching 64 children's statements given during police interviews with a detailed documentation of each phone call, made by the perpetrator during the actual phone calls. RESULTS: All children remembered the phone call per se, but they were found to omit almost all of the sexual and sensitive information (perpetrator's questions and statements) and about 70% of the neutral information given by the perpetrator. However, the children were accurate in the information they did report. CONCLUSIONS: The fact that the children did remember more of the neutral information suggests that they actually remembered the sexual information as well, but that they chose not to report it. Results indicate that children who have been sexually abused may remember more than they report in an initial interview. One possible underlying reason is that children experience shame or embarrassment.  相似文献   
974.
This paper reviews literature on dictionary-based cross-language information retrieval (CLIR) and presents CLIR research done at the University of Tampere (UTA). The main problems associated with dictionary-based CLIR, as well as appropriate methods to deal with the problems are discussed. We will present the structured query model by Pirkola and report findings for four different language pairs concerning the effectiveness of query structuring. The architecture of our automatic query translation and construction system is presented.  相似文献   
975.
976.
977.
978.
We propose a method for performing evaluation of relevance feedback based on simulating real users. The user simulation applies a model defining the user’s relevance threshold to accept individual documents as feedback in a graded relevance environment; user’s patience to browse the initial list of retrieved documents; and his/her effort in providing the feedback. We evaluate the result by using cumulated gain-based evaluation together with freezing all documents seen by the user in order to simulate the point of view of a user who is browsing the documents during the retrieval process. We demonstrate the method by performing a simulation in the laboratory setting and present the “branching” curve sets characteristic for the presented evaluation method. Both the average and topic-by-topic results indicate that if the freezing approach is adopted, giving feedback of mixed quality makes sense for various usage scenarios even though the modeled users prefer finding especially the most relevant documents.  相似文献   
979.
This paper analyses and discusses different constraints on workplace learning, vocational development and formation of identity. We ask how the learning and development of vocational identities are related to the various learning constraints and restrictions present in the socio-cultural contexts of the workplace. The study utilizes 20 interviews of industrial designers and nursing staff in Finland. The data on the vocational students was collected with Internet questionnaires (N?=?1125) from these two fields; technology and transport, and social services and health care. The results indicated that constraints on learning and professional/vocational identity development at work were mainly social in nature among employees as well as students. Therefore, we suggest that the most necessary conditions for workers’ and students’ learning are related to the feeling of “weness” that arises from individuals’ active participation in the social community.  相似文献   
980.
From apprentice to colleague: The metamorphosis of Early Career Researchers   总被引:2,自引:0,他引:2  
While the studies of Early Career Researchers (ECRs) have contributed politically important insights into factors hindering ECRs, they have not yet achieved a theoretical understanding of the causal mechanisms that are at work in the transition from dependent to independent research. This paper positions the early career phase in a theoretical framework that combines approaches from the sociology of science and organisational sociology and emphasises the transitional process. In this framework, the early career phase is considered as containing a status passage from the apprentice to the colleague state of their career in their scientific communities. In order to capture the mechanisms underlying this transition, it is important to analyse the interactions of these careers as they unfold over time. The usefulness of this approach is demonstrated with a pilot study of Australian ECRs. We show (a) that misalignments of the three careers stretch the transition phase; (b) that the two major factors affecting the transition are a successful PhD and a research-intensive phase prior to normal academic employment; and (c) that the most important condition hindering the transition is the lack of time for research. It can be concluded that as a result of a ‘market failure’ of the university system, the transition from dependent to independent research is currently being relocated to a phase between the PhD and the first academic position.  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