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   925篇
  免费   24篇
各国政治   70篇
工人农民   37篇
世界政治   89篇
外交国际关系   60篇
法律   377篇
中国政治   9篇
政治理论   301篇
综合类   6篇
  2023年   6篇
  2022年   3篇
  2021年   5篇
  2020年   6篇
  2019年   25篇
  2018年   24篇
  2017年   27篇
  2016年   32篇
  2015年   17篇
  2014年   23篇
  2013年   184篇
  2012年   21篇
  2011年   22篇
  2010年   23篇
  2009年   25篇
  2008年   34篇
  2007年   18篇
  2006年   28篇
  2005年   27篇
  2004年   35篇
  2003年   30篇
  2002年   25篇
  2001年   25篇
  2000年   18篇
  1999年   16篇
  1998年   20篇
  1997年   16篇
  1996年   13篇
  1995年   17篇
  1994年   13篇
  1993年   18篇
  1992年   14篇
  1991年   10篇
  1990年   9篇
  1989年   14篇
  1988年   12篇
  1987年   11篇
  1986年   9篇
  1985年   11篇
  1984年   12篇
  1983年   6篇
  1982年   6篇
  1981年   6篇
  1979年   3篇
  1978年   5篇
  1976年   2篇
  1975年   3篇
  1974年   2篇
  1972年   4篇
  1969年   4篇
排序方式: 共有949条查询结果,搜索用时 0 毫秒
141.
This article looks at how candidate votes have been translated into district mandates in the plurality tier of Germany’s mixed electoral system in all Bundestags-elections since 1953. Two questions in particular are addressed: How has disproportionality changed over time? And: What are the main determinants of disproportionality? To answer these two questions the article employs a modified version of the cube rule that accounts for the fact that the number of district parties in a mixed electoral system is higher than in a pure majoritarian system. The article identifies the effective number of district parties as the most important determinant of the disproportional translation of candidate votes into district mandates, i. e., the higher the number of district parties, the less proportional the translation.  相似文献   
142.
The current study covers a systematic review and meta-analysis of the prevalence of self-reported deviant or disruptive personality traits: anger, aggression, hostility, antisocial traits, psychopathy, and impulsivity in forensic populations worldwide. A computer-based search of titles was carried out using the PubMed electronic database for articles published in English that included a self-report instrument for personality characteristics in combination with a forensic population (i.e. detained in remand, sentenced and/or in enforced treatment, or on parole). The final sample consisted of 39 studies (N?=?11,716) that together used 17 different instruments and reported on 32 subscales or constructs that fitted our current interest. Results showed significantly higher levels of self-reported antisocial and psychopathic features in forensic samples, including a significant effect of the assessment instrument and subscale used. No significant differences were found for self-reported impulsivity, anger, aggression, or hostility in forensic populations compared to norm scores of non-forensic samples. Possible explanations, including suggestions that forensic populations are prone to providing socially desirable answers on self-report questionnaires, possibly to gain advantages such as a lower prison sentence or to avoid enforced treatment, are discussed, as well as limitations, and suggestions for future research and clinical practice.  相似文献   
143.
Thanks to Willem De Haan, Pompe Institute, Utrecht University, for his regular intellectually corrective efforts and to my colleague Gillian Douglas for encouraging the solo rewrite and for her helpful suggestions.  相似文献   
144.
145.
146.
Few studies have explored the direct impact of behavioral parent training programs on child maltreatment behaviors among marginalized, at-risk fathers. This feasibility study examined SafeCare® Dad to Kids (Dad2K), an augmented version of the evidence-based child maltreatment prevention program SafeCare, to determine the acceptability and initial efficacy of the program for improving father parenting skills and reducing maltreatment risk. Ninety-nine fathers were enrolled in the study and randomized to the SafeCare Dad2K Intervention (n?=?51) or comparison (n?=?48). Intervention fathers participated in 6 home visiting sessions and comparison fathers received parenting materials via mail. All fathers participating in the study completed a baseline and 8-week assessment (post-intervention) of maltreatment behaviors. In addition, intervention fathers completed feasibility and parenting skill measures. A significant main effect emerged indicating decreases for both groups in psychologically aggressive behaviors. No significant group by time findings emerged for child maltreatment behaviors. Father intervention completers endorsed high satisfaction ratings for the program and demonstrated significant improvements in targeted father-child interaction skills. Based on the high rates of acceptability and initial improvement in positive parenting skills, findings demonstrate the feasibility for involving at-risk fathers in behavioral parent training programs targeting child maltreatment prevention.  相似文献   
147.
148.
The administration of President Barack Obama, like those of his immediate predecessors, is focused on trying to improve the quality of, and use of, performance data. The federal government has been pursuing performance‐informed budget reforms for more than 50 years. Most recently, the Bush administration reforms included the President’s Management Agenda and the Program Assessment Rating Tool (PART). The Obama administration reforms include: measuring the effects of the American Recovery and Reinvestment Act; reducing or eliminating poorly‐performing programs; setting a limited number of short‐term, high‐priority performance goals; and funding detailed program evaluations. The administration is taking a more agency‐driven approach than the Bush administration, but continues to find it challenging to move beyond production of performance data to its use. There should be opportunities to show how performance information can be used for decision making, given the change in the political climate and the needs to reduce spending and the deficit. Historically, there has been little appetite in the Congress for evidence‐based decision making. The administration, however, can continue to demonstrate how federal agencies can use performance information to more effectively manage programs.  相似文献   
149.
This study is part of a larger research project on police crime in the United States. Police crimes are those criminal offenses committed by sworn law enforcement officers who have the general powers of arrest. Profit-motivated police crime involves officers who use their authority of position to engage in crime for personal gain. This study reports the findings on 1,591 cases where a law enforcement officer was arrested for one or more profit-motivated crimes during the seven-year period 2005–2011. The profit-motivated arrest cases involved 1,396 individual officers employed by 782 state, local, special, constable, and tribal law enforcement agencies located in 531 counties and independent cities in 47 states and the District of Columbia. Our data is the first systematic study of profit-motivated police crime. The study describes the nature of this form of police misconduct in terms of several dimensions, including the characteristics of police who perpetrate these crimes, where it occurs, the specific criminal charges, and the contexts within which profit-motivated police crime is punished through police agencies and the criminal courts.  相似文献   
150.
The enthusiasm for artificial intelligence (AI) as a source of solutions to problems is not new. In law, from the early 1980s until at least the early 2000s, considerable work was done on developing ‘legal expert systems.’ As the DataLex project, we participated in those developments, through research and publications, commercial and non-commercial systems, and teaching students application development. This paper commences with a brief account of that work to situate our perspective.The main aim of this paper is an assessment of what might be of value from the experience of the DataLex Project to contemporary use of ‘AI and law’ by free legal advice services, who must necessarily work within funding and other constraints in developing and sustaining such systems. We draw fifteen conclusions from this experience, which we consider are relevant to development of systems for free legal advice services. The desired result, we argue, is the development of integrated legal decision-support systems, not ‘expert systems’ or ‘robot lawyers’. We compare our insights with the approach of the leading recent text in the field, and with a critical review of the field over twenty-five years. We conclude that the approach taken by the DataLex Project, and now applied to free legal advice services, remains consistent with leading work in field of AI and law.The paper concludes with brief suggestions of what are the most desirable improvements to tools and platforms to enable development of free legal advice systems. The objectives of free access to legal information services have much in common with those of free legal advice services. The information resources that free access to law providers (including LIIs) can provide will often be those that free legal advice services will need to use to develop and sustain free legal advisory systems. There is therefore strong potential for valuable collaborations between these two types of services providers.  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