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   807篇
  免费   27篇
各国政治   70篇
工人农民   50篇
世界政治   85篇
外交国际关系   56篇
法律   365篇
中国共产党   1篇
中国政治   6篇
政治理论   198篇
综合类   3篇
  2023年   8篇
  2021年   10篇
  2020年   20篇
  2019年   27篇
  2018年   34篇
  2017年   38篇
  2016年   25篇
  2015年   20篇
  2014年   27篇
  2013年   163篇
  2012年   28篇
  2011年   31篇
  2010年   19篇
  2009年   21篇
  2008年   31篇
  2007年   34篇
  2006年   19篇
  2005年   26篇
  2004年   23篇
  2003年   20篇
  2002年   23篇
  2001年   21篇
  2000年   8篇
  1999年   10篇
  1998年   12篇
  1997年   10篇
  1996年   9篇
  1995年   8篇
  1994年   12篇
  1993年   6篇
  1992年   4篇
  1991年   2篇
  1990年   5篇
  1989年   6篇
  1987年   7篇
  1985年   3篇
  1984年   4篇
  1983年   3篇
  1982年   6篇
  1981年   4篇
  1980年   8篇
  1979年   7篇
  1978年   4篇
  1977年   5篇
  1976年   5篇
  1975年   2篇
  1968年   2篇
  1967年   4篇
  1963年   1篇
  1962年   2篇
排序方式: 共有834条查询结果,搜索用时 15 毫秒
771.
Science Is Golden: Academic R&D and University Patents   总被引:1,自引:0,他引:1  
Many studies have shown indirect effects of academic research by linking academic research to firm patents. However, since the Bayh-Dole Act, universities are allowed to patent inventions that were funded by federal money and to retain the royalties that these patents generate. As a consequence, universities now are interested in protecting their profitable discoveries, just like any commercial firm doing R&D. In this paper, we apply the econometric techniques traditionally used to estimate the patent production function of firms to data on the patents of American universities. We find that more money spent on academic research leads to more university patents, with elasticities that are similar to those found for commercial firms. In addition, we provide estimates of the effect of establishing a Technology Transfer Office on a university's patent output.  相似文献   
772.
Amphetamines are popular drugs of abuse, particularly among youngsters and at dance scenes. Cardiotoxicity (manifested as cardiomyopathy, acute myocardial infarction/necrosis, heart failure, or arrhythmia) after the recreational (mis)use of amphetamine and its synthetic derivatives has been documented but is rather rare. Amphetamine-related cardiac fatalities are even more rare. We present 6 cases of young persons who died unexpected after the chronic abuse of amphetamines. Death was not attributed to a lethal intoxication but to an acute myocardial necrosis, a right ventricle rupture, a cardiomyopathy, or an arrhythmia. Two of the deceased persons presented prior to their death to the emergency department, but their complaints were not considered (probably due to their young age) to be of cardiac origin. One case was a sport-related fatality where medical screening failed to identify the underlying cardiac pathology or the amphetamine abuse, and 1 case was a so-called idiopathic dilated cardiomyopathy where substance abuse was not considered by the treating physician. We think that amphetamine-associated cardiotoxicity is a rare but probably genuine entity that should be considered both in forensic and clinical/emergency medicine because of its potential medicolegal implications.  相似文献   
773.
Research on children and the law has recently renewed its focus on the development of children's ties to law and legal actors. We identify the developmental process through which these relations develop as legal socialization, a process that unfolds during childhood and adolescence as part of a vector of developmental capital that promotes compliance with the law and cooperation with legal actors. In this paper, we show that ties to the law and perceptions of law and legal actors among children and adolescents change over time and age. We show that neighborhood contexts and experiences with legal actors shape the outcomes of legal socialization. Children report lower ratings of legitimacy of the law and greater legal cynicism when they view interactions with legal actors as unfair and harsh. We show that perceived legitimacy of law and legal authorities shapes compliance with the law, and that these effects covary with social contexts including neighborhood. We identify neighborhood differences in this relationship that reflect differential experiences of children with criminal justice authorities and other social control agents. The results suggest that legal actors may play a role in socialization processes that lead to compliance with or rejection of legal and social norms. An erratum to this article is available at .  相似文献   
774.
This special issue focuses upon the creation, maintenance, and use of legitimating ideologies by authorities, institutions, and societies. Such ideologies provide normative justifications for existing policies and practices through which they are seen as appropriate, reasonable, and fair and are, consequently, more readily accepted.  相似文献   
775.
In this article we analyze the evolution of market-oriented health care reforms in the Netherlands. We argue that these reforms can be characterized as policy learning within and between competing policy programs. Policy learning denotes the process by which policy makers and stakeholders deliberately adjust the goals, rules, and techniques of a given policy in response to past experiences and new information. We discern three distinctive periods. During the first period (1988-1994), the prevailing corporatist and etatist policy programs were seriously challenged by the proponents of a new market-oriented program. But when it came to political decision making and implementation, the market-oriented program soon lost its impetus because it was technically too complex and could not provide short-term solutions to meet the urgent need for cost containment. During the second period (1994-2000), the etatist program regained its previously dominant position. In parallel to a strengthening of supply and price controls, however, the government also persevered in creating the technical and institutional preconditions for regulated competition. Moreover, public discontent over waiting lists and the call for more autonomy by individual providers and insurers strengthened the alliance in favor of regulated competition. This led to the revival of the market-oriented program in a 2001 reform plan. We conclude that the odds of these new post-2001 reforms succeeding are substantially higher than in the first period due to the technical and institutional adjustments that have taken place in the past decade.  相似文献   
776.
The elemental objects of the research study are: determination of time periods corresponding to gunshot residue particles (GSR) deposition after the shot from selected pistols and a revolver, and evaluation of the deposited particles number. For several shooting experiments were used a pistol CZ model 85, caliber 9 mm Luger with common ammunition 9 mm Luger FMJ Sellier & Bellot, a pistol CZ model 70, caliber 7.65 mm Browning (32 ACP) with common 7.65 mm Browning FMJ Sellier & Bellot ammunition and a revolver S&W Modell 60, barell length 2-1/8', cal. .38 Special with common Sellier&Bellot (FMJ) ammunition. The results of the study have indicated the behavior of GSR particles deposited after a single discharge. The overall time interval of GSR particles deposition and the number of deposited particles with the above mentioned arms and ammunition were established. The results can potentially be used for clarifying the situation at crime scenes and for subsequent interpretation of GSR evidential value in caseworks.  相似文献   
777.
This paper explores linkages between policy coherence, global environmental governance, and poverty reduction. It begins with a few thoughts on what these terms mean, and how they are linked. It then provides some perspectives on how the linkages might be improved over time. The paper takes the view that the most coherent institutional framework for both poverty reduction and environmental protection is likely to be one that is relatively decentralised, and based on a modular (networking) structure. The implication is that this framework should rely mainly on domestic and regional governance institutions, rather than on global ones. Effective management of environmental problems (both national and international) also implies a judicious mix of strong government institutions, smooth-functioning markets, and well-targeted infrastructure investments. The business and labour communities are therefore crucial. Other elements of civil society, notably the NGOs, also have important roles to play. Global environmental governance will have to overcome significant resistance insofar as the interests of the developing countries are concerned. Developing countries will need to be convinced that it is in their best interest to participate in global environmental institutions. The best way of making this case is to link (local) poverty reduction objectives explicitly to (both local and global) environmental protection goals. Bringing greater coherence to international trade, investment, and development co-operation policies could make an important contribution to strengthening these linkages. Investment is particularly important here – in the future, investment governance will likely prove to be more important for poverty reduction than environmental governance. Focusing on global environmental governance will not be enough.  相似文献   
778.
779.
780.
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