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   11215篇
  免费   312篇
各国政治   416篇
工人农民   390篇
世界政治   773篇
外交国际关系   330篇
法律   6938篇
中国政治   68篇
政治理论   2480篇
综合类   132篇
  2020年   116篇
  2019年   160篇
  2018年   196篇
  2017年   229篇
  2016年   223篇
  2015年   170篇
  2014年   193篇
  2013年   1051篇
  2012年   233篇
  2011年   269篇
  2010年   222篇
  2009年   280篇
  2008年   290篇
  2007年   286篇
  2006年   282篇
  2005年   263篇
  2004年   251篇
  2003年   259篇
  2002年   258篇
  2001年   433篇
  2000年   375篇
  1999年   304篇
  1998年   177篇
  1997年   135篇
  1996年   149篇
  1995年   146篇
  1994年   142篇
  1993年   146篇
  1992年   241篇
  1991年   256篇
  1990年   255篇
  1989年   262篇
  1988年   240篇
  1987年   238篇
  1986年   271篇
  1985年   268篇
  1984年   241篇
  1983年   229篇
  1982年   162篇
  1981年   135篇
  1980年   121篇
  1979年   154篇
  1978年   88篇
  1977年   117篇
  1976年   99篇
  1975年   78篇
  1974年   91篇
  1973年   88篇
  1972年   83篇
  1971年   72篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
51.
An improved method has been developed for the reliable classification of different C1R genetic variant forms from human serum or plasma. The method combines the use of neuraminidase-digested samples followed by monodimensional isoelectric focusing in the pH range 5 to 8 followed by immunoblotting. The method yields a simple pattern, with one major band in homozygote and two major bands in heterozygote cases.  相似文献   
52.
53.
Fabella  R. V. 《Public Choice》1996,89(3-4):325-337
Public Choice - We consider an economy where the rent value depends indirectly on value-adding investment of agents (thus indirectly endogenous) and the win-probability is a function of rent...  相似文献   
54.
55.
56.
We develop a model of the peace dividend and use it to predict the fiscal consequences of a reduction in the demand for military spending. The model is based on the assumption that the political process responds to political demands and costs in a way that maximizes net political benefits. The predictions of our model on how a peace dividend will be allocated over nonmilitary spending, tax relief, and deficit reduction is tested against the experience of eight major wars in United States history.  相似文献   
57.
A method ist described to determine the CO-content in the tissue of muscles. The prepared tissue is pulverized in a swinging mill at the temperature of liquid nitrogen. Parts of the powder are weighed into headspace vessels. Carbon monoxide ist ejected by a formerly described method and measured gaschromatographically. The Fe-content is determined after an acid disintegration by AAS. Acute intoxications lead to higher CO-contents in heart than in periphere muscles. Chronic exposure to carbon monoxide does not produce these differences.  相似文献   
58.
59.
We tested competing hypotheses derived from Gottfredson and Hirschis (1990) general theory and Moffitt's (1993a) developmental theory of antisocial behavior. The developmental theory argues that different factors give rise to antisocial behavior at different points in the life course. In contrast, the general theory maintains that the factor underlying antisocial behavior (i.e., criminal propensity) is the same at all ages. To test these competing predictions, we used longitudinal data spanning from age 5 to age 18 for the male subjects in the Dunedin Multidisciplinary Health and Development Study. Using reports from three sources (parents, teachers, and the boys themselves), we estimated second-order confirmatory factor models of antisocial behavior. These models provided consistent support for the developmental theory, showing that separate latent factors underlie childhood and adolescent antisocial behavior. Moreover, we found that these childhood and adolescent factors related in ways predicted by Moffitt's developmental theory to four correlates of antisocial behavior: Childhood antisocial behavior was related more strongly than adolescent antisocial behavior to low verbal ability, by per activity, and negative/impulsive personality, whereas adolescent antisocial behavior was related more strongly than childhood antisocial behavior to peer delinquency. The two underlying latent factors also showed the predicted differential relations to later criminal convictions: Childhood antisocial behavior was significantly more strongly associated with convictions for violence, while adolescent antisocial behavior was significantly more strongly associated with convictions for nonviolent offenses.  相似文献   
60.
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