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   2160篇
  免费   59篇
各国政治   169篇
工人农民   108篇
世界政治   127篇
外交国际关系   91篇
法律   1385篇
中国政治   23篇
政治理论   300篇
综合类   16篇
  2023年   12篇
  2022年   13篇
  2020年   47篇
  2019年   42篇
  2018年   67篇
  2017年   86篇
  2016年   82篇
  2015年   39篇
  2014年   50篇
  2013年   252篇
  2012年   60篇
  2011年   71篇
  2010年   55篇
  2009年   57篇
  2008年   65篇
  2007年   61篇
  2006年   57篇
  2005年   63篇
  2004年   61篇
  2003年   66篇
  2002年   46篇
  2001年   73篇
  2000年   53篇
  1999年   50篇
  1998年   20篇
  1997年   19篇
  1996年   21篇
  1995年   12篇
  1994年   19篇
  1993年   21篇
  1992年   32篇
  1991年   36篇
  1990年   39篇
  1989年   42篇
  1988年   36篇
  1987年   27篇
  1986年   38篇
  1985年   28篇
  1984年   21篇
  1983年   18篇
  1982年   12篇
  1981年   18篇
  1980年   12篇
  1979年   19篇
  1978年   21篇
  1977年   18篇
  1971年   18篇
  1970年   17篇
  1968年   19篇
  1967年   12篇
排序方式: 共有2219条查询结果,搜索用时 0 毫秒
71.
A method for identifying the group appurtenance of biological objects from subjects suffering from various diseases is developed. The method can be used in examination of putrefactive objects (blood, secretions, hair, etc.) and in cases when the group appurtenance cannot be identified by other methods.  相似文献   
72.
Analogizing the U.S. Department of Homeland Security to a corporate conglomerate consisting of multiple, formerly independent operating units with little in common and even less history of cooperation, this response to Professor Charles Wise prescribes the "bitter medicine" of interoperable communications. The critical function of assuring homeland security and disaster preparedness cannot depend on the uncertain trajectory of adaptive response.  相似文献   
73.
74.
75.
Abstract. Most decisions by the European Parliament are taken by an absolute majority of its members. Some decisions however – such as the approval of the budget of the European Union – require a two-thirds majority. The paper analyzes the a priori voting strength of the member states when their representatives vote coherently. It is shown that the increase in votes for Germany in the 1994 reallocation enhanced its position. A less favourable effect, however, can be seen for the other large members (France, Italy, the United Kingdom, and Spain). However, since votes in the EP tend to be cast according to partisan rather than national affiliation, the relative voting power of the political groups with respect to the two quotas is also analyzed. The tool to measure this is the (normalized) Banzhaf power index, partially extended to account for connected coalitions. The paper demonstrates that the distribution of votes between the present EU member states as allocated in proportion to their population size indeed roughly corresponds to their a priori voting power. However, the relative influence of the largest political groups, the European Socialists and the European People's Party, tends to be overestimated by their share of seats in the framework of the simple majority rule, but it is considerable if the quota is two-thirds. Finally, under the two-thirds majority rule, the European Liberal, Democratic and Reformist Party as well as the small groups appear to be almost powerless. The more the EP gains political leverage – a further increase in its institutional powers is to be expected in the framework of the ongoing Intergovernmental Conference – the more the distribution of voting power between the member states and between the political groups will be a crucial factor in the shaping of EU policies.  相似文献   
76.
77.
78.
One of the problem-making tendencies in environmental policymaking has been an incremental approach to regulation and control. Either because the full dimensions of an environmental problem are not perceived or because political resistance compels step-by-step action, environmental controls tend to be applied progressively, beginning with nominal, largely ineffectual, retroactive declarations. Failing to meet objectives, laws are toughened and extended year by year until the severty of sanctions begins to defeat their intended effects. The fractionized state of environmental law, focusing on specific problems of pollution and subject to changes in interpretation, makes observance and enforcement difficult. The National Environmental Policy Act of 1969 could have facilitated the unification of environmental policy; unfortunately presidents and congresses have not chosen to use it for this purpose. Meanwhile, because environmental protection per se is relatively new to public law and policy and has few roots in the common law, private citizens aggrieved by political obstruction of their expectations have appealed to the courts for relief and compensation. Conservative courts have granted this relief under the "taking" clause of the Constitution. Extraordinary measures in constitutional law may be necessary to resolve an impasse in public policy resulting from conflict between public interests and private rights as interpreted by the judiciary.  相似文献   
79.
O. H. Swank 《Public Choice》1993,75(4):339-356
This paper presents popularity function estimates for U.S. presidents which are based on a model in which voters' evaluations reflect an understanding of partisan reputations for differing policies.I am indebted to J.C. Siebrand, F.A.A.M. van Winden and an anonymous referee for many useful suggestions.  相似文献   
80.
Postmortem redistribution of morphine and its metabolites   总被引:2,自引:0,他引:2  
The postmortem redistribution of morphine, morphine-3-glucuronide, morphine-6-glucuronide and total morphine was assessed in 40 heroin-related deaths. In blood taken from subclavian, heart, and femoral regions, concentrations of morphine and its metabolites were similar. While there was a trend for higher concentrations in heart blood, when compared with femoral or subclavian blood, this was not significant. There was also no significant difference in concentrations between admission and autopsy blood in which the postmortem interval was on average 59 h. From our observations, significant postmortem redistribution of morphine and its metabolites seems unlikely.  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