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   16668篇
  免费   469篇
各国政治   606篇
工人农民   717篇
世界政治   1180篇
外交国际关系   598篇
法律   10266篇
中国共产党   34篇
中国政治   189篇
政治理论   3380篇
综合类   167篇
  2021年   112篇
  2020年   231篇
  2019年   256篇
  2018年   354篇
  2017年   386篇
  2016年   423篇
  2015年   306篇
  2014年   373篇
  2013年   1625篇
  2012年   391篇
  2011年   447篇
  2010年   351篇
  2009年   425篇
  2008年   514篇
  2007年   511篇
  2006年   494篇
  2005年   459篇
  2004年   480篇
  2003年   381篇
  2002年   368篇
  2001年   657篇
  2000年   589篇
  1999年   445篇
  1998年   245篇
  1997年   202篇
  1996年   208篇
  1995年   178篇
  1994年   189篇
  1993年   175篇
  1992年   316篇
  1991年   386篇
  1990年   344篇
  1989年   321篇
  1988年   341篇
  1987年   321篇
  1986年   321篇
  1985年   298篇
  1984年   283篇
  1983年   252篇
  1982年   170篇
  1981年   206篇
  1980年   150篇
  1979年   183篇
  1978年   143篇
  1977年   109篇
  1976年   103篇
  1975年   108篇
  1974年   125篇
  1973年   136篇
  1972年   92篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
91.
Postmortem changes in sulfide concentrations in body tissues were examined in autopsied rats exposed to hydrogen sulfide concentrations of 550 to 650 ppm, and in nonexposed rats and humans. Analyses were made by gas chromatography, following an extractive alkylation. Sulfide concentrations in the blood, liver, and kidneys of rats increased in both the exposed and nonexposed groups, depending on the lapse of time after death. On the other hand, the lung, brain, and muscle showed little or no change in sulfide concentration with elapse of time after death. The data obtained from human tissues were almost the same as those for rats, except data for blood, in which no or little increase of sulfide was observed.  相似文献   
92.
93.
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   
94.
Presented in this paper are the initial results involving the use of the nose or outer ear as temperature measurement sites to determine the postmortem period of the human corpse. Simple mathematical models for both sites are developed based on cooling curves of five corpses. Analysis of errors between actual and calculated postmortem intervals suggest that in its present form, the described methods would not be suitable for use in accurately determining the time since death of human corpses.  相似文献   
95.
96.
97.
A case of kidnapping involving the concept of paternity testing is described. The couple arrested and charged with kidnapping stated the child in their possession was their biological daughter. Serological tests were performed on liquid blood samples in an effort to determine if the couple could have been the biological parents of the child. Two genetic inconsistencies were discovered in the 15 blood marker systems analyzed.  相似文献   
98.
If categories of 'race' and nationality are social and historical constructions laden with irrefutable meaning and consequences, then ethnic identities, like any other forms of identity, are means to other ends that may or may not be particular. Twentieth‐century indigenist history in Brazil reveals how the cultural politics of indigenism and nationalism can coalesce in a tautological politics of identity that undermines individual liberty and democratic heterogeneity. The concepts 'post‐indigenism,'post‐nationalism' and 'post‐identity' point to the strategic suspension of the infinite heterogeneity of the political subject as a means to widen the ground of shared experience and common interests beyond the realm of hollow and oppressive essentialisms.  相似文献   
99.
The present study examines the extent to which neighborhood and social psychological influences predict childhood violence among 867 African‐American youth. The results showed that neighborhood affluence was the only neighborhood‐level variable to exert a significant influence on childhood violence. Furthermore, childhood violence was significantly related to social psychological influences, such as adopting a street code, associating with violent peers, parental use of violence, and quality parenting. Overall, the findings suggested that simply living in a violent neighborhood does not produce violent children, but that family, peer, and individual characteristics play a large role in predicting violence in childhood.  相似文献   
100.
An important problem in the political economy of the UK is that the disparity of unemployment rates across its regions is much more marked than the corresponding dispersion of wage rates. One possibility is that this is due to the attitude of trade unions to their members in different regions. If unions wish to preserve parity between members in different regions then they will value wage equality between regions over and above wage levels. This may then persuade them to overlook inter-regional productivity differences in setting wages. The price that low-efficiency regions will then pay for this desire for wage equality is higher unemployment rates.Much of the research for this paper was carried out while the author was visiting the Trade Union Economics Research Institute (FIEF), Stockholm in 1989. An earlier version of this paper was presented at a seminar there and the author is gratefully to Villy Bergstrom, Paul Chen, Douglas Hibbs, Eva Udden-Jondal and other institute members for several useful comments. Comments from Kevin Lee, John Spencer and an anonymous referee have also substantially improved the paper. The usual disclaimer applies.  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