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   8840篇
  免费   511篇
各国政治   556篇
工人农民   251篇
世界政治   538篇
外交国际关系   315篇
法律   6090篇
中国共产党   7篇
中国政治   44篇
政治理论   1507篇
综合类   43篇
  2021年   53篇
  2020年   193篇
  2019年   206篇
  2018年   276篇
  2017年   291篇
  2016年   313篇
  2015年   280篇
  2014年   230篇
  2013年   882篇
  2012年   221篇
  2011年   227篇
  2010年   262篇
  2009年   297篇
  2008年   256篇
  2007年   283篇
  2006年   302篇
  2005年   217篇
  2004年   235篇
  2003年   204篇
  2002年   203篇
  2001年   350篇
  2000年   294篇
  1999年   249篇
  1998年   110篇
  1997年   73篇
  1996年   76篇
  1995年   82篇
  1994年   95篇
  1993年   87篇
  1992年   155篇
  1991年   166篇
  1990年   150篇
  1989年   163篇
  1988年   131篇
  1987年   146篇
  1986年   130篇
  1985年   143篇
  1984年   103篇
  1983年   122篇
  1982年   85篇
  1981年   88篇
  1980年   56篇
  1979年   114篇
  1978年   74篇
  1977年   60篇
  1976年   50篇
  1975年   48篇
  1974年   56篇
  1973年   57篇
  1972年   44篇
排序方式: 共有9351条查询结果,搜索用时 15 毫秒
21.
22.
This article examines constraints in development bureaucracies in intensifying the use of microcomputers as they move beyond processing applications to analysing applications. The work is based on the experience of several ministries of the Government of Kenya. Processing applications involve throughput of data and are relatively simple. Analysing applications, in contrast, are more complex and include data assembly, sensitivity analysis, and modelling. The article argues that processing applications are more compatible with the administrative cultures, bureaucratic functions, personnel skill levels and organizational structures of development bureaucracies. Analysing applications are less compatible because they require a level of training and motivation uncommon in development bureaucracies. Analysing applications are further thwarted by constraints in the supply of relevant information and the lack of demand for analysis by decision-makers. A four-cell matrix is developed which explains these constraints. The article concludes with several recommendations for encouraging microcomputer-based analysis, but cautions that processing applications will continue to dominate for the foreseeable future.  相似文献   
23.
24.
25.
26.
27.
28.
29.
A minisatellite probe, MZ 1.3, detecting hypervariable fragment patterns was isolated from a human genomic library. A repetitive sequence of 27 bp length was identified which is contained in the probe approx. 40 times. The MZ 1.3 repeat shows variable homology of 53-73% to the repetitive sequence of the protein III gene of the bacteriophage M13 genome. Polymorphic restriction fragment patterns were found with MZ 1.3 using the enzymes Hinf I, BstN I, Hae III, Mbo I, PstI/Pvu II, and Rsa I. An average of 18 polymorphic fragments was observed using Hinf I as enzyme. The band sharing frequency after Hinf I digestion among unrelated individuals was determined to be 23.8 +/- 7.2%. An example for the application of MZ 1.3 to paternity testing in an incest case is given. The probe can be used with radioactive or non-radioactive detection systems. An approach is presented to compare polymorphic fragment patterns from individuals obtained by independent gel runs on the basis of relative band positions (RBP) and calculated in a computerized analysis.  相似文献   
30.
This article discusses relevant literature on the potential benefits of sport, recreation, and leisure, and how these benefits relate to rehabilitation of juveniles. Many professionals involved in juvenile rehabilitation believe sport and recreation are beneficial adjuncts to treatment programming; however, it can be difficult to structure sport and recreation in ways that directly correspond to treatment goals. The purpose of this article is to provide insights for professionals working with juveniles on how sport and recreation programming can be an effective means of helping to achieve rehabilitation goals. Attention is given to approaches, particularly the Teaching Games for Understanding model (Bunker & Thorpe, 1982), which can be used to effectively link recreation and sport to the rehabilitation process.  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