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   30295篇
  免费   785篇
各国政治   1272篇
工人农民   1162篇
世界政治   2470篇
外交国际关系   1048篇
法律   18176篇
中国共产党   2篇
中国政治   177篇
政治理论   6506篇
综合类   267篇
  2020年   350篇
  2019年   470篇
  2018年   600篇
  2017年   678篇
  2016年   707篇
  2015年   496篇
  2014年   592篇
  2013年   3053篇
  2012年   692篇
  2011年   778篇
  2010年   620篇
  2009年   714篇
  2008年   787篇
  2007年   813篇
  2006年   764篇
  2005年   695篇
  2004年   720篇
  2003年   717篇
  2002年   656篇
  2001年   1196篇
  2000年   1074篇
  1999年   863篇
  1998年   486篇
  1997年   404篇
  1996年   363篇
  1995年   359篇
  1994年   388篇
  1993年   359篇
  1992年   590篇
  1991年   659篇
  1990年   608篇
  1989年   621篇
  1988年   584篇
  1987年   602篇
  1986年   621篇
  1985年   608篇
  1984年   544篇
  1983年   567篇
  1982年   420篇
  1981年   389篇
  1980年   303篇
  1979年   425篇
  1978年   258篇
  1977年   250篇
  1976年   221篇
  1975年   213篇
  1974年   242篇
  1973年   240篇
  1972年   196篇
  1971年   181篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
61.
North American research on the policing of ‘domestic violence’ has been very influential among policy makers in Great Britain. In particular, research which purports to verify the deterrence value of arrest has prompted the establishment of over thirty domestic violence units in London and similar initiatives elsewhere in Britain. The paper will outline the nature of the traditional police response to ‘family violence’ in London and the nature of the experimental innovations. Changes in police practice with regard to this type of violence will be put in the context of the organizational constraints and possibilities of policing. Finally, changing police responses to domestic violence will be evaluated in terms of the debate over the possibility of using the state or its organs to achieve social change.  相似文献   
62.
63.
In recent years, legislators in all fifty states have given grandparents rights to petition for visitation privileges with grandchildren that can be enforced over parental objections. Grandparent visitation rights reflect an effort to protect meaningful relationships children enjoy with nonparental caregivers, enlist the assistance of extended family when the child's nuclear family is disrupted, and defend the interests of grandparents themselves. This psycholegal analysis explores the direct and indirect consequences of grandparent visitation statutes for family functioning. Statutory provisions are summarized, and the effects of these statutes are evaluated in light of what is known about the role of grandparents in child development, how courts evaluate children's "best interests" in grandparent visitation disputes, and how these statutes can alter family functioning in informal ways. The authors conclude that there are risks as well as benefits to children and families in grandparent visitation statutes, and suggest directions for procedural and statutory reform.  相似文献   
64.
A simple and sensitive method is described for quantitative analysis of chlorpromazine in blood, serum, urine and tissue homogenate. The chlorpromazine cation radical produced by adding perchloric acid and 2,3-dichloro-5,6-dicyano-p-benzoquinone to the sample can be detected by the ESR method at room temperature. The sensitivity limit is 10 ng, that is, 20 μl of the solution containing 0.5 μg chlorpromazine/ml. The time needed for the measurement is within 10 min. The chlorpromazine radical thus produced is very stable; for example, 95% of the radical was observed after 24 h. The advantage of this method is discussed by comparing with the ordinary spectrophotometry which requires the purification of the sample.  相似文献   
65.
66.
67.
68.
69.
The remains of an unidentified female neonate were discovered in a field in central Missouri. Examination revealed bilateral absence of the parietal bones. A search of the literature describing similar defects suggests that the present case represents a unique condition, described here for the first time.  相似文献   
70.
To demonstrate that norms have independent causal power, constructivists de-emphasise material factors related to state interests and highlight social factors. Similarly, they conceptualise international organisations as autonomous from state influence, and focus on cases featuring non-state actors that stimulate a “tipping point” of norm diffusion among states in advance of state sponsorship. By contrast, this article utilises an historical materialist approach that admits both social and material data to examine the contrasting case of population control. It finds that US corporate foundations, eugenist demographers, feminist birth control activists and related NGOs conceptualised and promoted population control in the United States, at the United Nations, and across developing countries. However, the tipping point of norm diffusion occurred only after the United States publicly advocated population control. Indeed, material and social factors were inextricably bound together.  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