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   11324篇
  免费   318篇
各国政治   493篇
工人农民   413篇
世界政治   789篇
外交国际关系   336篇
法律   7012篇
中国政治   71篇
政治理论   2418篇
综合类   110篇
  2020年   105篇
  2019年   173篇
  2018年   210篇
  2017年   245篇
  2016年   236篇
  2015年   179篇
  2014年   201篇
  2013年   1089篇
  2012年   236篇
  2011年   281篇
  2010年   230篇
  2009年   286篇
  2008年   293篇
  2007年   293篇
  2006年   293篇
  2005年   264篇
  2004年   257篇
  2003年   267篇
  2002年   262篇
  2001年   443篇
  2000年   391篇
  1999年   309篇
  1998年   173篇
  1997年   141篇
  1996年   152篇
  1995年   141篇
  1994年   152篇
  1993年   145篇
  1992年   243篇
  1991年   261篇
  1990年   244篇
  1989年   253篇
  1988年   232篇
  1987年   229篇
  1986年   266篇
  1985年   261篇
  1984年   233篇
  1983年   223篇
  1982年   155篇
  1981年   133篇
  1980年   118篇
  1979年   152篇
  1978年   87篇
  1977年   112篇
  1976年   99篇
  1975年   72篇
  1974年   91篇
  1973年   84篇
  1972年   78篇
  1971年   69篇
排序方式: 共有10000条查询结果,搜索用时 109 毫秒
271.
272.
273.
274.
275.
276.
In 1973 the United States Supreme Court ruled that abortion could be had practically on request during the first 3 months of pregnancy. This article discusses whether the decision led to more public support for that position, and where in the U.S. the increase in support has been most drastic. The most recent public opinion polls indicate about 60% public support legalized abortion, while it was only 45% before 1973. Support has also increased even if pregnancy is not judged to be detrimental to the mother's health, or if it is not the result of rape and/or incest, but even if it is simply requested for economic or purely personal reasons. People under 30, with college education, men and Protestants, seem to be the staunchest supporters of abortion on demand. There has also been an increase in the number of Catholics supporting abortion. Support for abortion increased in most states between 1969-1973, particularly in the West and in the Northwest. The fight to deny federal funds for abortion is still raging in Congress; some studies indicate that the religion of the legislators is the most powerful predictor of voting on abortion, and that the decision is a very personal one, and not easily altered by the lobbying of groups on either side.  相似文献   
277.
278.
279.
Since the start of the British National Health Service, disputes between the government and the medical profession have become formalized battles with well-recognized rules. But between 1974 and 1976 the consensus underlying the conflict was challenged by the Labour Government's policy on private practice and pay beds. This paper examines the course of the conflict and analyzes the factors underlying the eruption of this issue. It draws attention to the role of the trade-unions in activating the Labour Party's latent ideological commitment on private practice. Although the issue appears to conform to a class-conflict model, this simple symmetry becomes blurred on closer analysis. In conclusion the paper argues that while socio-structural factors extrinsic to the health service explain the appearance of private practice on the political agenda, it is factors endogenous to the NHS which explain the outcome of the dispute. In turn, however, these endogenous factors have little to do with the fact that the NHS is delivering a commodity called "health." Instead, what is important is that the NHS is a complex organization and, as such, depends on the co-operation of a variety of groups--ranging from the medical profession to laundry workers. The analysis, therefore, concludes that the power of the medical profession derives not from its elite status but from its position as an organized group in a complex industry.  相似文献   
280.
Skull identification by electronic photo-composition can, with the help of a video-animation compositor, be further developed beyond the pure superprojection technique into an animated picture difference image. The employment of this combined technique to be recommended on account of the improved possibilities of control to be realized in the congruity of the superprojection composite picture.  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