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   257篇
  免费   12篇
各国政治   34篇
工人农民   7篇
世界政治   15篇
外交国际关系   12篇
法律   126篇
中国政治   1篇
政治理论   72篇
综合类   2篇
  2022年   1篇
  2021年   4篇
  2020年   6篇
  2019年   16篇
  2018年   13篇
  2017年   11篇
  2016年   13篇
  2015年   7篇
  2014年   15篇
  2013年   33篇
  2012年   18篇
  2011年   19篇
  2010年   12篇
  2009年   9篇
  2008年   11篇
  2007年   8篇
  2006年   14篇
  2005年   14篇
  2004年   9篇
  2003年   8篇
  2002年   10篇
  2001年   4篇
  2000年   5篇
  1999年   1篇
  1998年   3篇
  1995年   1篇
  1990年   1篇
  1986年   1篇
  1985年   1篇
  1979年   1篇
排序方式: 共有269条查询结果,搜索用时 31 毫秒
1.
The enzyme activity of phosphoglucomutase (PGM) has been investigated in red cell haemolysates from 142 individuals and compared to the sub-type as determined by isoelectric focusing. The 10 phenotypes showed significant differences in PGM-activity which indicates that there is a correlation between the level of activity and the isolelectric point of homozygotes. No indication of silent alleles or alleles with reduced activity was found in this collective.  相似文献   
2.
In the presented oversight model, in which a regulatory agency may collude with regulatees, a watchdog organization may scrutinize the agency’s decision-making and find evidence speaking for collusive behavior. Found evidence is of a specific, stochastic quality. Courts will overturn the administrative decision when the evidence presented in court exceeds a minimum quality standard set by the political principal. Lowering the quality standard increases the odds of finding evidence of sufficient quality and, hence, leads to increasing collusion deterrence and to a lower probability of acquitting collusive administrators (type I error), but also to a higher probability of convicting an innocent administrator (type II error). It is shown that, when welfare-maximization gives rise to an interior solution, the welfare-maximizing standard of evidence is lower than the one that merely minimizes the costs of legal errors without taking deterrence costs into account, but will imply incomplete deterrence. However, conditions can and will be identified under which both error cost minimization and complete deterrence coincide with welfare-maximization.  相似文献   
3.
This article analyzes the relationship between the different forms of direct democratic participation and the size of the tax state in the Swiss cantons for the period from 1983 to 2000. The analysis distinguishes between the different effects of the financial referendum and the initiative. Theoretical arguments suppose that the financial referendum curb the tax state, whereas the initiative is expected to contribute to its growth. Pooled time series analyses show that legal conditions of direct democratic participation in general and especially the legislation on financial referenda are much more important than the frequency of plebiscites for the explanation of the different sizes of the tax states in the cantons. As an additional result of the analyses, the impact of direct democracy on the tax state turns out to be much larger in the 1990s compared to the decade before.  相似文献   
4.
In this paper we analyse possible effects of insurance on child labour. First, we develop a theoretical model that separates effects of insurance with and without a shock taking place. We then empirically test the hypotheses derived from the model by analysing the extension of a health insurance product in urban Hyderabad in Pakistan. Consistent with the theoretical model we develop in this paper, the reduction in child labour caused by the extension is largely due to an ex-ante feeling of protection as opposed to an ex-post shock-mitigation effect.  相似文献   
5.
Does town twinning foster citizens’ political support of the European Union? This study investigates the relation, which is maintained in politics and academics but still calls for empirical evidence. We distinguish between two levels of analysis, namely individual and context level, and differentiate in accordance with David Easton’s modes of political support specific from diffuse support. The corresponding hypotheses are tested with a unique dataset, which embraces survey findings of more than 12,000 respondents from 28 randomly selected municipalities in Germany. The main conclusions that emerge from the analysis are: First, town twinning does promote political support of the European Union on the individual level. Second, there are positive effects on specific and diffuse support. Thirdly, there is no relationship between local activity in twinning affairs and political support.  相似文献   
6.
It is the purpose of this article to describe and analyse recent developments of the new regulatory state in Germany. Due to substantial changes in the regime governing energy regulation in 2005, it is suggested that we witness a trend towards consolidation. By consolidation, the article refers primarily to cross-sectoral institutional and instrumental homogeneity, possibly caused by the transfer of regime elements from sector to sector. It is argued that both traditions of state-societal co-operation as well as sector structures (i.e., incumbent suppliers) are key factors to explain regime emergence and change also in the energy sector.  相似文献   
7.
8.
9.
Depression is a common and debilitating disorder in adolescence. Sleep disturbances and depression often co-occur with sleep disturbances frequently preceding depression. The current study investigated whether catastrophic worry, a potential cognitive vulnerability, mediates the relationship between adolescent sleep disturbances and depressive symptoms, as well as whether there are gender differences in this relationship. High school students, ages 16–18, n = 1,760, 49 % girls, completed annual health surveys including reports of sleep disturbance, catastrophic worry, and depressive symptoms. Sleep disturbances predicted depressive symptoms 1-year later. Catastrophic worry partially mediated the relationship. Girls reported more sleep disturbances, depressive symptoms, and catastrophic worry relative to boys. The results, however, were similar regardless of gender. Sleep disturbances and catastrophic worry may provide school nurses, psychologists, teachers, and parents with non-gender specific early indicators of risk for depression. Several potentially important practical implications, including suggestions for intervention and prevention programs, are highlighted.  相似文献   
10.
While Inglehart's post‐material model figures very prominently in the literature on new politics, the limits of its relevance have seldom been critically assessed. This article uses various inconsistencies between his model and the socio‐economic features of the Austrian and Swiss Greens to point to some of its theoretical shortcomings. Because of its psychological assumptions, the model neglects various cultural and historical structures which are essential for any full and consistent explanation of new politics in Austria and Switzerland.  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