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   402篇
  免费   28篇
各国政治   26篇
工人农民   6篇
世界政治   40篇
外交国际关系   51篇
法律   176篇
中国政治   3篇
政治理论   125篇
综合类   3篇
  2023年   5篇
  2022年   3篇
  2021年   6篇
  2020年   16篇
  2019年   17篇
  2018年   24篇
  2017年   25篇
  2016年   16篇
  2015年   11篇
  2014年   11篇
  2013年   74篇
  2012年   10篇
  2011年   19篇
  2010年   8篇
  2009年   13篇
  2008年   20篇
  2007年   24篇
  2006年   25篇
  2005年   12篇
  2004年   10篇
  2003年   8篇
  2002年   6篇
  2001年   2篇
  2000年   6篇
  1999年   2篇
  1998年   8篇
  1997年   7篇
  1996年   3篇
  1995年   4篇
  1994年   6篇
  1993年   2篇
  1992年   1篇
  1991年   3篇
  1990年   3篇
  1988年   2篇
  1987年   3篇
  1986年   3篇
  1985年   1篇
  1984年   2篇
  1983年   2篇
  1982年   1篇
  1980年   2篇
  1977年   2篇
  1976年   1篇
  1966年   1篇
排序方式: 共有430条查询结果,搜索用时 46 毫秒
321.

Introduction

The Welfare Act of 1996 banned welfare and food stamp eligibility for felony drug offenders and gave states the ability to modify their use of the law. Today, many states are revisiting their use of this ban, searching for ways to decrease the size of their prison populations; however, there are no empirical assessments of how this ban has affected prison populations and recidivism among drug offenders. Moreover, there are no causal investigations whatsoever to demonstrate whether welfare or food stamp benefits impact recidivism at all.

Objective

This paper provides the first empirical examination of the causal relationship between recidivism and welfare and food stamp benefits

Methods

Using a survival-based estimation, we estimated the impact of benefits on the recidivism of drug-offending populations using data from the National Corrections Reporting Program. We modeled this impact using a difference-in-difference estimator within a regression discontinuity framework.

Results

Results of this analysis are conclusive; we find no evidence that drug offending populations as a group were adversely or positively impacted by the ban overall. Results apply to both male and female populations and are robust to several sensitivity tests. Results also suggest the possibility that impacts significantly vary over time-at-risk, despite a zero net effect.

Conclusion

Overall, we show that the initial passage of the drug felony ban had no measurable large-scale impacts on recidivism among male or female drug offenders. We conclude that the state initiatives to remove or modify the ban, regardless of whether they improve lives of individual offenders, will likely have no appreciable impact on prison systems.
  相似文献   
322.
Horpedahl  Jeremy 《Public Choice》2021,188(1-2):203-219
Public Choice - Yandle (Regulation 7(3):12–16, 1983) proposed a “bootleggers and Baptists” framework to explain political coalition formation. Using mandatory disclosure reports,...  相似文献   
323.
Abstract: A statistical analysis and computational algorithm for comparing pairs of tool marks via profilometry data is described. Empirical validation of the method is established through experiments based on tool marks made at selected fixed angles from 50 sequentially manufactured screwdriver tips. Results obtained from three different comparison scenarios are presented and are in agreement with experiential knowledge possessed by practicing examiners. Further comparisons between scores produced by the algorithm and visual assessments of the same tool mark pairs by professional tool mark examiners in a blind study in general show good agreement between the algorithm and human experts. In specific instances where the algorithm had difficulty in assessing a particular comparison pair, results obtained during the collaborative study with professional examiners suggest ways in which algorithm performance may be improved. It is concluded that the addition of contextual information when inputting data into the algorithm should result in better performance.  相似文献   
324.
It has long been documented that “marriage matters” for a variety of reasons. Furthermore, there has been considerable debate over the causal relationship between marriage and a number of its associated correlates, most often related to social processes of health behaviors, criminal involvement, and achievement. While most research associated with marriage and crime is concerned with the individual, little is understood concerning the ecological effect of marriage rates. Using data from the U.S. Census Bureau and the F.B.I.'s Uniform Crime Reporting Program (UCR), this study tests such relationships through the implementation of spatially-centered analytic approaches concerning the potential independent effects of marriage rates within a social disorganization context. It is important to understand such aggregate level effects in the face of the existing literature, which relies heavily on relational associations and is subject to ecological fallacy. Analytic techniques incorporate Exploratory Spatial Data Analysis (ESDA) and spatial regression.  相似文献   
325.
This article reports on the evaluation of political science research internships and considers their costs and benefits for a political science education. Students indicated high levels of appreciation of the inaugural Political Science Research Internship Unit at the University of Western Australia in terms of its contribution to their personal development and work experience. A substantial number of interns gained insights into the policy process through this form of experiential learning. Many came to appreciate the contingency and the normative dimensions of knowledge in the policy process. Whereas about half of the students found the transition from the seminar room to the policy world difficult, the other half were more successful in applying their theoretical knowledge to practical experiences. The article also indicates how this evaluation informs future course design.  相似文献   
326.
International IP treaties and conventions cover those that arehigh-profile, politically sensitive documents to those thatscarcely register on the consciousness of the average practitioner.The epitome of the former is TRIPs—the Agreement on Trade-RelatedIP Rights—which is rarely off the IP agenda. At the otherend of the scale can be found such rare creatures as the StresaConvention of 1953 on the use of names and designations of originsof  相似文献   
327.
328.
Do certain cultures or religions predispose citizens to support the deployment of torture against suspected terrorists? Based on an international survey of 31 different countries, we examine how religion and culture affect respondents' position on torture. We find that at the individual level, the nonreligious are resolutely opposed to torture, and that Christians, Buddhists, Hindus, Jews, and other faiths are more supportive. Among world cultures, Muslim/African cultures are most opposed to the torture of terrorists, while Confucian, English-speaking, and South Asian cultures are the most supportive of it. We also find that the use of torture has less support in countries that are suffering from terrorism, once religion and culture are considered.  相似文献   
329.
330.
Eosin Y is a potential new color test for use in detecting illicit drugs that has not been extensively studied. In the present study, a variety of drugs of abuse and fentanyl analogues were tested to determine which drugs will bind to eosin Y, which functional groups are capable of binding and eliciting a color change, and a mechanism for eosin Y binding to fentanyl. Further, these agents were combined with common cutting agents and other drugs of abuse in order to determine the fentanyl detection limit in a drug mixture using an eosin Y test strip. Additionally, cobalt thiocyanate was used to determine whether the combination of cobalt thiocyanate and eosin Y has the potential to identify fentanyl. Through the testing performed, we concluded that (i) Eosin Y is capable of detecting low amounts of fentanyl down to 1%, (ii) Eosin Y binds to select tertiary amines to produce an orange to pink color change, and (iii) Eosin Y binds to the nonpiperidine ring nitrogen of fentanyl as a primary binding site and the piperidine ring nitrogen as a secondary binding site. While the cobalt thiocyanate assay detected 1% fentanyl in some of the mixtures, eosin Y detected 1% fentanyl in all mixtures. Finally, eosin Y was able to detect fentanyl in forensic case samples containing heroin and various cutting agents. Based on our results, eosin Y has the potential to screen for fentanyl and fentanyl analogues and can detect fentanyl in low amounts when mixed with common cutting agents.  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