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   28079篇
  免费   654篇
各国政治   1111篇
工人农民   1670篇
世界政治   1980篇
外交国际关系   1049篇
法律   15978篇
中国共产党   2篇
中国政治   92篇
政治理论   6644篇
综合类   207篇
  2020年   247篇
  2019年   299篇
  2018年   1592篇
  2017年   1577篇
  2016年   1471篇
  2015年   417篇
  2014年   402篇
  2013年   2238篇
  2012年   661篇
  2011年   1348篇
  2010年   1354篇
  2009年   1007篇
  2008年   1213篇
  2007年   1199篇
  2006年   551篇
  2005年   549篇
  2004年   646篇
  2003年   643篇
  2002年   492篇
  2001年   742篇
  2000年   691篇
  1999年   565篇
  1998年   380篇
  1997年   314篇
  1996年   252篇
  1995年   292篇
  1994年   319篇
  1993年   273篇
  1992年   397篇
  1991年   410篇
  1990年   372篇
  1989年   399篇
  1988年   371篇
  1987年   392篇
  1986年   389篇
  1985年   393篇
  1984年   350篇
  1983年   364篇
  1982年   307篇
  1981年   284篇
  1980年   211篇
  1979年   286篇
  1978年   203篇
  1977年   182篇
  1976年   154篇
  1975年   140篇
  1974年   153篇
  1973年   136篇
  1972年   126篇
  1969年   102篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
271.
The authors present a historical overview of urbanization in Venezuela. The impact of the oil economy on population change and spatial distribution is emphasized. A typology of cities based on socioeconomic function and on a demographic classification of urban centers is devised. Future trends in urbanization are also considered. (SUMMARY IN ENG)  相似文献   
272.
Robert Higgs 《Public Choice》1989,63(2):175-181
U.S. senators frequently vote against the preference of their constituency, assuming that such a preference exists. Both of a state's senators represent the same constituency. Whenever they split their votes, one or the other is necessarily going against the constituency preference. For the sample of defense-related votes analyzed above, misrepresentation — either observable vote splitting or unobservable vote matches that go against the constituency preference — occurred at least 37 percent of the time, at least 46 percent on one vote. Although party differences accounted for more than two-thirds of the vote splitting, a substantial number of splits remained. Besides, a party difference for a state's senatorial pair is itself problematical.The method employed here can be applied easily to any data whatever on senatorial voting. Its application will show that, quite often, many senators depart from constituency preference. This finding refutes the hypothesis, popular in certain circles, that ours is a more or less perfect political market with little or no scope for ideologically driven voting by legislators.  相似文献   
273.
274.
275.
A precise method for evaluating election schemes   总被引:1,自引:0,他引:1  
A previously published paper evaluated election schemes under a wide variety of election circumstances. This paper improves upon the previous work by refining the measures used to rate the election schemes and increasing the statistical significance of those ratings. With these modifications, we can now draw some new conclusions:
  1. In general circumstances, the Borda System outperforms the Copeland System which outperforms Approval which outperforms Majority Rule.
  2. The Maximin Rule — strongly supported by Rawls's — turns out to be a reasonable election rule if the number of election alternatives is large relative to the number of voters.
  3. With two exceptions, all our election systems performed quite well given a society with highly correlated utilities.
  4. Given a polarized society, a serial dictatorship was better than every other election system except Borda.
Perhaps even more importantly, we now have the possibility of conducting some cost/benefit analyses of different proposals for electoral changes.  相似文献   
276.
There is always a temptation to suppose that one's own problems (whether personal or national) are unique. They rarely are. The "problem" of the elderly is no exception and so there is no particular point in looking to the specific characteristics of one's own health, social service, and social security systems for causes. There is, however, every reason to be looking at them for the consequences. They can also exacerbate the causes. In this paper we sketch the principal features (economic, social, and demographic) that have contributed to the "problem" of the elderly in Europe and then outline the main intellectual issues that need to be explored and resolved. That sounds a bit pompous but, if one is to avoid an intellectual morass consisting of the various assertions about needs, obligations, and so on that emanate from rival concerned parties and various professional interests on the one hand, and simplistic political slogans whose only virtue is that they cut the Gordian Knot (but provide no real enlightenment) on the other, then we need to be doing just this. We shall take a few things for granted: that cost-containment is not the be-all-and-end-all of policy; that value for money depends equally on what you get as on what you spend; that overall expenditure per head is mainly determined by income per head (though some countries have managed to get and stay below the regression line); and that it "ain't so" that all one needs to do is to "leave it to the market." To have justified each of these would have taken too much space so we can only assert them and trust that, in swallowing these camels, you won't strain at the gnats to come.  相似文献   
277.
278.
279.
280.
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