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   16447篇
  免费   857篇
各国政治   724篇
工人农民   561篇
世界政治   1239篇
外交国际关系   520篇
法律   10954篇
中国共产党   1篇
中国政治   84篇
政治理论   3147篇
综合类   74篇
  2021年   92篇
  2020年   286篇
  2019年   338篇
  2018年   365篇
  2017年   443篇
  2016年   446篇
  2015年   386篇
  2014年   388篇
  2013年   1625篇
  2012年   365篇
  2011年   444篇
  2010年   429篇
  2009年   450篇
  2008年   428篇
  2007年   388篇
  2006年   409篇
  2005年   382篇
  2004年   407篇
  2003年   365篇
  2002年   356篇
  2001年   718篇
  2000年   625篇
  1999年   481篇
  1998年   271篇
  1997年   208篇
  1996年   189篇
  1995年   192篇
  1994年   225篇
  1993年   212篇
  1992年   324篇
  1991年   348篇
  1990年   325篇
  1989年   338篇
  1988年   308篇
  1987年   313篇
  1986年   338篇
  1985年   324篇
  1984年   254篇
  1983年   270篇
  1982年   186篇
  1981年   192篇
  1980年   134篇
  1979年   221篇
  1978年   139篇
  1977年   128篇
  1976年   114篇
  1975年   84篇
  1974年   124篇
  1973年   119篇
  1972年   103篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
21.
22.
23.
24.
25.
26.
Divorce, although a statistical norm, is a developmental trauma to the children involved. This article looks at the two-camp emotional environment of a divorcing family and its effect on the formation of a child's identity. By examining developmental ages, chosen according to divorce research, the author attempts to show how the interspouse emotional cathexes negatively affect a child's sense of self in ways specific to the child's age at the divorce.  相似文献   
27.
The DNA commission of the International Society of Forensic Genetics (ISFG) was convened at the 21st congress of the International Society for Forensic Genetics held between 13 and 17 September in the Azores, Portugal. The purpose of the group was to agree on guidelines to encourage best practice that can be universally applied to assist with mixture interpretation. In addition the commission was tasked to provide guidance on low copy number (LCN) reporting. Our discussions have highlighted a significant need for continuing education and research into this area. We have attempted to present a consensus from experts but to be practical we do not claim to have conveyed a clear vision in every respect in this difficult subject. For this reason, we propose to allow a period of time for feedback and reflection by the scientific community. Then the DNA commission will meet again to consider further recommendations.  相似文献   
28.
29.
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   
30.
In a case of first impression, the Trademark Trial and AppealBoard of the US Patent and Trademark Office has held that theflavour orange is not registrable for use with quick-dissolvingantidepressant tablets and pills.  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