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   4778篇
  免费   60篇
  国内免费   10篇
教育   3545篇
科学研究   260篇
各国文化   44篇
体育   448篇
综合类   4篇
文化理论   67篇
信息传播   480篇
  2022年   27篇
  2021年   53篇
  2020年   67篇
  2019年   126篇
  2018年   153篇
  2017年   167篇
  2016年   152篇
  2015年   104篇
  2014年   129篇
  2013年   972篇
  2012年   142篇
  2011年   138篇
  2010年   156篇
  2009年   140篇
  2008年   152篇
  2007年   147篇
  2006年   113篇
  2005年   98篇
  2004年   109篇
  2003年   84篇
  2002年   98篇
  2001年   70篇
  2000年   111篇
  1999年   77篇
  1998年   77篇
  1997年   64篇
  1996年   74篇
  1995年   58篇
  1994年   70篇
  1993年   64篇
  1992年   51篇
  1991年   75篇
  1990年   52篇
  1989年   47篇
  1988年   37篇
  1987年   45篇
  1986年   45篇
  1985年   43篇
  1984年   47篇
  1983年   39篇
  1982年   32篇
  1981年   36篇
  1980年   30篇
  1979年   24篇
  1978年   33篇
  1977年   39篇
  1976年   28篇
  1975年   23篇
  1974年   23篇
  1972年   14篇
排序方式: 共有4848条查询结果,搜索用时 15 毫秒
181.
ABSTRACT

The purpose of this paper is to investigate whether and through what mechanisms vulnerable adults are empowered through a second-chance education programme. At the same time, the paper aims at unveiling the obstacles hindering learners’ empowerment process and making suggestions for the improvement of the educational programme fostering further empowerment of the learners. To achieve the objectives set by the research, a hybrid methodological design was applied combining hermeneutic phenomenology and critical discourse analysis. Data collection was performed using three tools: semi-structured interviews, reflective journals and document analysis. The results led to the emergence of a multilevel empowerment scheme of vulnerable adults in the programme. The empowerment mechanisms that emerged were as follows: (a) empowerment through participation as a self-value, (b) empowerment through the reconstruction of past experiences, (c) empowerment through the strengthening of their social capital and (d) empowerment through literacy skills. At the same time, the study shed light on a number of factors that inhibit the process of learners’ empowerment, which unveil structural and operational weaknesses of the programme as well as of the policies pursued by the State.  相似文献   
182.
183.
The article gives an update on the progress with COUNTER to May 2005. In particular it describes the draft Code of Practice for books and reference works and the results of actual use of COUNTER‐compliant data in the journals area.  相似文献   
184.
185.
The reverse k-nearest neighbor (RkNN) problem, i.e. finding all objects in a data set the k-nearest neighbors of which include a specified query object, has received increasing attention recently. Many industrial and scientific applications call for solutions of the RkNN problem in arbitrary metric spaces where the data objects are not Euclidean and only a metric distance function is given for specifying object similarity. Usually, these applications need a solution for the generalized problem where the value of k is not known in advance and may change from query to query. In addition, many applications require a fast approximate answer of RkNN-queries. For these scenarios, it is important to generate a fast answer with high recall. In this paper, we propose the first approach for efficient approximative RkNN search in arbitrary metric spaces where the value of k is specified at query time. Our approach uses the advantages of existing metric index structures but proposes to use an approximation of the nearest-neighbor-distances in order to prune the search space. We show that our method scales significantly better than existing non-approximative approaches while producing an approximation of the true query result with a high recall.  相似文献   
186.
This article analyzes the utility of policy principles advanced by professional associations.  相似文献   
187.
188.
189.
190.
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