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   446篇
  免费   16篇
各国政治   18篇
工人农民   35篇
世界政治   34篇
外交国际关系   23篇
法律   229篇
中国政治   6篇
政治理论   112篇
综合类   5篇
  2023年   3篇
  2022年   3篇
  2021年   6篇
  2020年   8篇
  2019年   11篇
  2018年   15篇
  2017年   23篇
  2016年   15篇
  2015年   14篇
  2014年   14篇
  2013年   69篇
  2012年   19篇
  2011年   13篇
  2010年   9篇
  2009年   10篇
  2008年   16篇
  2007年   18篇
  2006年   11篇
  2005年   21篇
  2004年   16篇
  2003年   9篇
  2002年   6篇
  2001年   6篇
  2000年   11篇
  1999年   8篇
  1998年   2篇
  1997年   5篇
  1996年   4篇
  1995年   8篇
  1994年   7篇
  1993年   5篇
  1992年   4篇
  1991年   4篇
  1990年   4篇
  1989年   10篇
  1988年   11篇
  1987年   5篇
  1986年   7篇
  1985年   2篇
  1984年   4篇
  1983年   3篇
  1982年   3篇
  1980年   2篇
  1979年   3篇
  1978年   2篇
  1976年   3篇
  1975年   2篇
  1969年   1篇
  1968年   1篇
  1967年   2篇
排序方式: 共有462条查询结果,搜索用时 15 毫秒
61.
A naked man died under peculiar circumstances and the postmortem examination revealed unexpected lesions in the cervical spine. Investigations of the cervical spine (computed tomography, magnetic resonance imaging, and histological examination) showed that a piece of bone was torn of the anterior part of vertebra C6 and that there was fresh bleeding in the surrounding tissue. The cause of death remained unclear but was most likely cardiac arrhythmia initiated by beta-2 agonist inhalation due to an acute asthmatic attack. Data from biomechanical investigation using finite element analysis supported the conclusion that the cervical spine injury was secondary to impact during falling as a consequence of the cardiac arrhythmia.  相似文献   
62.

Purpose

This article provides a critical review of the state of research on the gang membership-violent victimization relationship.

Methods

This study examines a comprehensive list of published quantitative studies that have assessed the relationship between gang membership and violent victimization.

Results

By examining strengths and weaknesses of the design features of various studies, this article identifies theoretical, conceptual, methodological, and statistical issues that should be considered when interpreting the causal effect of gang membership on violent victimization. Some of the methodological and design issues discussed include, but are not limited to, consequences of failing to establish temporal order, failure to conduct sensitivity analyses to determine treatment effects, use of bootstrapping methods with propensity score analysis, measurement of violent victimization, and corrections for dependence in matched samples of gang and non-gang members.

Conclusion

Suggestions for future research are provided that will help advance the empirical study of the gang membership-violent victimization nexus.  相似文献   
63.
Sexual misconduct has emerged as a widespread problem throughout the criminal justice system as indicated by law enforcement officer sexual assault incidents in various cities and the findings of the recent National Prison Rape Elimination Act Research Commission. Through multivariate statistical analysis of data from two Department of Defense-wide surveys (2002 and 2006), this paper examines the indicators and cofounders of sexism, sexual harassment, and sexual assault with attention to change during the study period. Findings inform a suggested anticipatory model for prevention and intervention in military settings that, based on shared characteristics such as male dominance and authoritarian culture, provide an approximate reference context for criminal justice sexual misconduct best practices consideration.  相似文献   
64.
New data show that between 1982 and 2007, in over 60 countries governments were linked to and cooperated with informal armed groups within their own borders. Given the prevalence of these linkages, we ask how such links between governments and informal armed groups influence the risk of repression. We draw on principal-agent arguments to explore how issues of monitoring and control help understanding of the impact of militias on human rights violations. We argue that such informal agents increase accountability problems for the governments, which is likely to worsen human rights conditions for two reasons. First, it is more difficult for governments to control and to train these militias, and they may have private interests in the use of violence. Second, informal armed groups allow governments to shift responsibility and use repression for strategic benefits while evading accountability. Using a global dataset from 1982 to 2007, we show that pro-government militias increase the risk of repression and that the presence of militias also affects the type of violations that we observe.  相似文献   
65.
This paper is the third in a series of research reports on quality of forensic mental health evaluations submitted to the Hawaii judiciary. Previous studies examined quality of reports assessing competency to stand trial (CST) and post-acquittal conditional release, in felony defendants undergoing court-ordered examinations. Utilizing a 44-item quality coding instrument, this study examined quality of criminal responsibility reports in a sample of 150 forensic mental health evaluations conducted between 2006 and 2010 by court-appointed panels. Raters attained high levels of agreement in training and quality coding. Similar to the previous studies, overall quality of reports was mediocre, falling below the .80 quality criterion score for report elements, regardless of evaluator professional identification or employment status. Level of agreement between evaluators and judicial sanity determinations was “fair” using Cicchetti's (1994) standards for interpretation of intra-class correlations. Level of agreement was lower than previously published findings for CST reports and better than conditional release reports. Reasons for mediocre report quality and “fair” inter-rater agreement are discussed, including the fact that criminal responsibility evaluations are complex, retrospective in nature, and involve significant degrees of inference. In contrast to CST evaluations, assessment of criminal responsibility involves a mental state at the time of the offense evaluation. Threats to reliability in forensic reports are discussed. Suggestions for improvement of report quality are proffered, including standardization of procedures and report format and use of forensic assessment instruments.  相似文献   
66.
Nearly a decade ago, fentanyl reappeared in the United States illicit drug market. In the years since, overdose deaths have continued to rise as well as the amount of fentanyl seized by law enforcement agencies. Research surrounding fentanyl production has been beneficial to regulatory actions and understanding illicit fentanyl production. In 2017, the Drug Enforcement Administration (DEA) began collecting seized fentanyl samples from throughout the United States to track purity, adulteration trends, and synthetic impurity profiles for intelligence purposes. The appearance of a specific organic impurity, phenethyl-4-anilino-N-phenethylpiperidine (phenethyl-4-ANPP) indicates a shift in fentanyl production from the traditional Siegfried and Janssen routes to the Gupta-patent route. Through a collaboration between the DEA and the US Army's Combat Capabilities Development Command Chemical Biological Center (DEVCOM CBC), the synthesis of fentanyl was investigated via six synthetic routes, and the impurity profiles were compared to those of seized samples. The synthetic impurity phenethyl-4-ANPP was reliably observed in the Gupta-patent route published in 2013, and its structure was confirmed through isolation and structure elucidation. Organic impurity profiling results for illicit fentanyl samples seized in late 2021 have indicated yet another change in processing with the appearance of the impurity ethyl-4-anilino-N-phenethylpiperidine (ethyl-4-ANPP). Through altering reagents traditionally used in the Gupta-patent route, the formation of this impurity was determined to occur through a modification of the route as originally described in the Gupta patent.  相似文献   
67.
68.
As drug control policy reform trends toward marijuana decriminalization, focus will shift to opiate enforcement which, in turn, accentuates substance abuse treatment. While the national offender reentry movement has effected widespread implementation of programming for co-occurring substance abuse and mental health disorders, the practice of Medicated Assisted Treatment (MAT) is nonstandard throughout the criminal justice system despite its evidence based status. This paper observes MAT delivered within and by the criminal justice system as indicated by evidence rated programs and practices listed in the national criminal justice evidence based registry crimesolutions.gov. Observation of these programs’ treatment orientation, client populations, delivery settings, and operational status inform discussion for additional MAT implementation and program registry augmentation.  相似文献   
69.
Drawing on rational choice theory, this study considers how best to measureunemployment within the context of the unemployment–property crimerelationship. Specifically, we use ARIMA techniques to examine the relativeefficacy of using the conventional Bureau of Labor Statistics (BLS)unemployment rate and two alternative measures of the demand for labor aspredictors of monthly counts of U.S. property offenses for the years 1982through 1996. The bivariate time series analyses indicate that while theBLS unemployment rate exhibits null effects, the number of individualsunemployed for 15 weeks or more and the capacity utilization ratesignificantly affect the level of property crime. The implications ofthese results are discussed.  相似文献   
70.
The Supreme Court instructs that the most important consideration in analyzing fair use is the effect on the market for the original. Employing music sales data, this article presents evidence of digital sampling's effect on the sales of sampled songs. Our results indicate that a reassessment of fair use in the area of music sampling is needed since sales of sampled songs increased after being repurposed within new songs. These results are robust and highly statistically significant. Findings of this nature favor a judicial determination that sampling constitutes a fair use, even when considering the influence that a new work has on extant licensing markets for sample clearance. This article argues that the current sample–licensing market is a product of aberrant antisampling case law arising from a lack of relevant empirical data and nonutilitarian judicial opinions. As set forth herein, the goal of encouraging creative activity without hindering copyright owners’ capacity to financially gain from their work is served by implementing a limited presumption of fair use for sampling. The findings are further applicable outside of the fair use analysis, as the study is important in the private law when viewed through a law and strategy lens. Forward thinking music firms should reframe their approach by encouraging sampling of their works to secure cost‐free advertising and achieve a competitive advantage.  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