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   132篇
  免费   15篇
各国政治   1篇
工人农民   12篇
世界政治   6篇
外交国际关系   16篇
法律   77篇
中国政治   7篇
政治理论   17篇
综合类   11篇
  2022年   2篇
  2021年   3篇
  2020年   3篇
  2019年   3篇
  2018年   6篇
  2017年   9篇
  2016年   5篇
  2015年   13篇
  2014年   9篇
  2013年   11篇
  2012年   19篇
  2011年   2篇
  2010年   10篇
  2009年   11篇
  2008年   6篇
  2007年   8篇
  2006年   4篇
  2005年   4篇
  2004年   6篇
  2002年   1篇
  2000年   1篇
  1999年   1篇
  1996年   1篇
  1995年   1篇
  1992年   2篇
  1989年   2篇
  1986年   3篇
  1985年   1篇
排序方式: 共有147条查询结果,搜索用时 31 毫秒
61.
62.
Abstract: This study documents four clinical cases of fatal crush injuries to children between 1.5 and 6 years of age with correlations between modeled stress and clinically observed fracture patterns. The clinical case fractures were concentrated in the basicranium, bridged the impact sites, and traversed the middle cranial fossa in the area of the spheno‐occipital synchondrosis. The crushing forces from these cases were recreated on a simplified finite element model of a cranium by applying bilateral pressures to corresponding regions. Numerous trials were run to develop a representative pattern of principal stress directions. In all cases, the highest tensile stresses were located on the basicranium and corresponded to the observed fracture path(s). These results suggest that prefailure stress field diagrams may predict fracture propagation paths, although these will not be exact. Also, these analyses indicate that quasi‐static bilateral loading of the cranium may lead to predictable fracture of the basicranium.  相似文献   
63.
64.
ALLISON ANN PAYNE 《犯罪学》2009,47(4):1167-1200
Research has identified several student and school characteristics that might be altered to reduce student deviance. Most of this research, however, fails to address whether gender moderates these relationships; that is, most studies do not distinguish between the effect of school‐related factors on boys' and girls' delinquency and drug use. In the current study, data from a nationally representative sample of 13,450 students in 253 public, nonalternative, secondary schools are used to examine hierarchical linear models of the relationships between student bonding, communal school organization, and male and female delinquency and drug use. Gender differences in the overall model of relationships are found as are differences in the relationships between student bonding elements and delinquency. Gender differences are not found in the relationships between student bonding elements and drug use, nor in the relationships between communal school organization elements and delinquency and drug use. Implications for theory and prevention are discussed.  相似文献   
65.
Abstract: Camouflage garments can be associated with surveillance images of a crime scene even in the absence of unique wear marks or very high‐quality images. However, the probability of an accidental association, or incidence rate, is significant. The present work describes and validates a method for estimating the incidence rate based on a statistical model of the garment manufacturing process. The model was developed primarily for use with the current U.S. Army Combat Uniform (ACU), but can be applied to any camouflage garment. Eight garment manufacturers were studied, and all sources of variation in the manufacturing process were characterized. The marking and spreading procedures were found to be dominant and consistent sources of variation. However, some sources of variation, in particular those because of human operators, were not consistent enough to accurately characterize. Sources of variation that could not be well‐characterized were ignored in the statistical model, yielding a worst‐case estimate that is an upper‐bound to the true incidence rate. The model was evaluated for a variety of cases. Depending on the quality of the surveillance image, the manufacturing parameters, and the local population, incidence rates range from about 3% to negligibly small. The model was validated by returning to one manufacturer, and sampling a large number of completed garments and estimating empirical match probabilities. The empirical probabilities validated the estimates of the worst‐case incidence rate and also demonstrated that typical incidence rates are significantly lower.  相似文献   
66.
This study aims to investigate the impact of recent administrative and managerial practices of public organizations on public service motivation. Using data from a survey of 1840 civil servants in Seoul City Government, this research uses hierarchical linear modeling to empirically assess the aforementioned associations. The results show that recent administrative and managerial practices have both positive and negatives on public service motivation. At the end of the study, the administrative and managerial implications of the study are also discussed in light of these results.  相似文献   
67.
How trusting of civil servants are citizens in North America and Europe? What individual-level and national-level attributes correlate with trust in civil servants? To answer these questions, data from national samples across 21 countries are taken from the International Social Survey Programme (ISSP) 2006 Role of Government module and are analyzed by estimating multilevel binary logistic regression models. Trust is correlated with both subjective (at the individual-level) and objective (at the national-level) indicators of performance. The quality of institutions also matters as countries with lower levels of public sector corruption experience higher levels of trust in the civil service.  相似文献   
68.
本文比较了基于计算机隐喻的传统认知处理模型的内容与特点和新兴起的连接论的内容与特点,认为,连接论将取代传统的基于计算机隐喻的认知处理模型成为今后指导人类认知研究的主流思想;语言学等学科要取得突破必须抛弃计算机隐喻的影响。  相似文献   
69.
满族作为中国封建社会最后一个王朝的建立者,其政治制度、法律制度和民族文化一直是东亚各国研究的热门问题。从法文化的研究角度,对满族入关以前的政治制度和法律文化进行研究和分析,以八旗制度为切入点,思考满族共同体的模式化思维方式和法律程序意识之间的内在联系。  相似文献   
70.
《国际相互影响》2012,38(5):571-596
To what extent are states vulnerable to disruptions in trade networks? We investigate this question by simulating attacks on the intermodal shipping network, whose ubiquitous containers carry 80% to 90% of all global trade in goods. While this network has reduced transportation costs and spurred international trade, the dependence of modern economies on ship-borne trade means disruptions in one region may produce considerable costs for states in another region. We simulate an “optimal terrorist” that learns about the conditions under which attacks on the network in other parts of the world generate economic losses to the United States. The study illustrates that by adopting a network- and process-oriented ontology, the study of interdependence may better anticipate new sources of interstate and transnational conflict.  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