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   1014篇
  免费   27篇
各国政治   60篇
工人农民   108篇
世界政治   88篇
外交国际关系   39篇
法律   450篇
中国政治   7篇
政治理论   259篇
综合类   30篇
  2023年   10篇
  2021年   10篇
  2020年   14篇
  2019年   21篇
  2018年   25篇
  2017年   28篇
  2016年   29篇
  2015年   23篇
  2014年   31篇
  2013年   145篇
  2012年   23篇
  2011年   40篇
  2010年   26篇
  2009年   26篇
  2008年   31篇
  2007年   35篇
  2006年   36篇
  2005年   36篇
  2004年   28篇
  2003年   17篇
  2002年   28篇
  2001年   30篇
  2000年   14篇
  1999年   20篇
  1998年   20篇
  1997年   14篇
  1996年   16篇
  1995年   16篇
  1994年   14篇
  1993年   14篇
  1992年   13篇
  1991年   19篇
  1990年   18篇
  1989年   15篇
  1988年   9篇
  1987年   14篇
  1986年   12篇
  1985年   11篇
  1984年   15篇
  1983年   16篇
  1982年   19篇
  1981年   6篇
  1980年   4篇
  1979年   6篇
  1978年   9篇
  1977年   8篇
  1976年   4篇
  1972年   2篇
  1971年   3篇
  1969年   7篇
排序方式: 共有1041条查询结果,搜索用时 31 毫秒
1.
This article provides an editorial introduction to the following three related articles on the growing use and influence of social science research in family law. It first considers why this has become problematic and identifies some common strategies used by advocates, sometimes under the guise of scholarship, to destroy the standing of research findings contrary to their ideological or political position. Then it discusses briefly the remedies proposed to mitigate these kinds of problems within the following three articles.  相似文献   
2.
Local government reforms in contemporary Russia are placed in the broader contexts of political reform under Putin and the historical relationship between local administration and the state. Reforms of local government thus help illuminate the architecture of contemporary state building in Russia and the degree to which contemporary Russia perpetuates political traditions. This study reviews the antecedent action in local government prior to the Putin era. It then examines the Kozak Commission and the new law on local government, assessing the strengths and weaknesses of these reforms. Finally, this study examines the challenges of implementing the reforms and what these challenges tell us about devolution and centralisation under Putin.  相似文献   
3.
4.
5.
This paper offers a framework to illuminate the role of universities in systems of innovation. The framework attempts to incorporate economic, social, and political influences that affect the ability of universities to both create new knowledge and deploy that knowledge in economically useful ways and thereby contribute to economic growth and prosperity. The objective of this paper is to build a more general understanding of university–industry relationships and their role in knowledge-based innovation systems.  相似文献   
6.
Large-scale privatization is an unfamiliar area of public policy. The practice and study of property reforms and privatization needs to include mesolvel phenomena such as laws, regulations, institutions and standard operating procedures. There has been little comparative analysis of privatization programs around the world. The author argues that analysts should compare the most immediately relevant institutional environment of the enterprise. Conceptually, this mesolevel system is situated between the firm and the macroeconomy. This system of action is especially fruitful for cross-national comparisons of privatization programs because it is at this level that privatization strategies are designed. The problem for Eastern Europe and for less-developed countries is lack of experience with the relatively light economic regulation that characterizes industrial countries. Government leaders must also decide how much effort to devote to privatization of state-owned enterprises and how much to fostering private sector investment in new firms. Ernest J. Wilson, III is affiliated with the National Security Council, Washington, D.C.  相似文献   
7.
Eighteen external quality assessment (proficiency testing) samples were prepared from client specimens collected with the Intercept® oral fluid collection device and by spiking drug-free oral fluid. Samples were circulated in pairs at quarterly intervals to 13 UK and USA based laboratories for analysis by a panel of OraSure micro-plate Intercept® enzyme immunoassay kits and hyphenated mass spectrophotometric techniques. During the survey, there was a single case of non-specificity in a false report for methadone. The major errors were of lack of sensitivity relative to the concentration thresholds specified for the immunoassays. The sensitivity for overall ‘present’/‘not found’ reports calculated as true positives/(true positives + false negatives) were for the amfetamine specific assay 50%, methyl-amfetamines 93%, barbiturates 64%, cannabinoids 73%, cocaine and metabolites 100%, benzodiazepines 69%, methadone 95%, opiates 79% (opiates excluding oxycodone 93%), phencyclidine 93% and human gamma-globulin 97%. A small number of the sensitivity errors were attributable to errors in chromatographic confirmation techniques.  相似文献   
8.
This paper describes some of the spinoff benefits that can result from R&D projects, and categorizes them in terms of the dimensions of market and technical newness. These dimensions are discussed with reference to two types of spinoffs: 1) alternative market applications, when the results of an R&D project are subsequently applied to a market or use that differs from the originally intended application, and 2) second-generation technologies, when the technology that was the subject of an R&D project is significantly altered or enhanced in unanticipated ways through subsequent R&D. Examples from the Department of Energy's Energy-Related Inventions Program are integrated into the results of literature review to illustrate key concepts, including core technologies, degrees of market and technology newness, technology robustness, and the nature of connections linking spinoffs to prior R&D investments. The paper concludes by discussing spinoffs as a managerial strategy.  相似文献   
9.
10.
Ames K  Wilson L  Sawhill R  Glick D  King P 《Newsweek》1991,118(9):40-41
When dying is all that awaits them, more and more people are choosing certain death now rather than uncertain life on medical support systems. But the decision seldom comes easy, as a Newsweek reporter discovers during three weeks with the doctors, nurses, patients and families in an intensive-care ward. A best-selling guide to suicide fires debate over when it is right to let life go--and who should make that choice when the patient no longer can.  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