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   210篇
  免费   6篇
各国政治   5篇
工人农民   16篇
世界政治   28篇
外交国际关系   6篇
法律   134篇
中国政治   1篇
政治理论   25篇
综合类   1篇
  2023年   1篇
  2021年   2篇
  2020年   1篇
  2019年   5篇
  2018年   6篇
  2017年   7篇
  2016年   13篇
  2015年   3篇
  2014年   4篇
  2013年   15篇
  2012年   7篇
  2011年   13篇
  2010年   15篇
  2009年   5篇
  2008年   12篇
  2007年   13篇
  2006年   11篇
  2005年   2篇
  2004年   2篇
  2003年   6篇
  2002年   9篇
  2001年   7篇
  2000年   3篇
  1999年   4篇
  1998年   3篇
  1997年   3篇
  1996年   4篇
  1995年   3篇
  1994年   5篇
  1993年   2篇
  1992年   2篇
  1991年   3篇
  1990年   2篇
  1988年   2篇
  1987年   3篇
  1986年   1篇
  1984年   2篇
  1983年   1篇
  1982年   2篇
  1981年   2篇
  1980年   1篇
  1978年   2篇
  1975年   1篇
  1974年   5篇
  1973年   1篇
排序方式: 共有216条查询结果,搜索用时 31 毫秒
151.
An estimated 1.6 million youth run away from home each year. While on the run, these youth are vulnerable to exploitation, victimization, increased dangers and perpetration of criminal behavior. Runaway and homeless youth are far more likely to engage in substance use and delinquent behavior, drop out of school and suffer from sexually transmitted diseases and mental illness at greater rates than the norm. Timely and direct intervention in runaway and throwaway cases is imperative to protect youth from the high risks of living on the streets. National Safe Place is an outreach and prevention program that is uniquely designed to provide immediate safety and access to services for any youth in need. In partnership with over 360 youth serving agencies and over 10,000 businesses and community organizations across the United States, the Safe Place program educates youth about alternatives to running away and homelessness and provides easily accessible links to service providers. Ongoing data collection indicates that National Safe Place has been successful in reaching endangered youth at risk of abuse, neglect or serious family problems but that expanded program models remain needed. The challenges and successes of current programming and the future of National Safe Place program expansion are discussed.  相似文献   
152.
Abstract: Over the past decade or more, DNA databases have been a focal point of development for the forensic field. Using this approach, forensic and law enforcement agencies have aided millions of investigations, many of which would remain unsolved but for the intelligence links provided from DNA database comparison. However, despite their widespread use and increasingly broad legislative and operational reach, there has been limited overarching performance modeling or reflection on drivers of operational or financial efficiency. This study derives an inferential model for DNA database performance using data from major national DNA database programs. Parameters that optimize desirable database outputs (matches) are isolated and discussed, as is an approach for maximizing financial efficiency and minimizing ethical impact. This research takes important steps toward identifying measures of performance for forensic DNA database operations.  相似文献   
153.
Virus hunter     
Walsh B 《Time》2011,178(18):34-39
  相似文献   
154.

Objective

This state of the art review of 102 studies is a primer on ADHD and its major comorbidities for criminologists unfamiliar with the genetic, neurobiological, and evolutionary literatures.

Materials and methods

Neurological, genetic, medical, and criminal justice data bases were keyword searched for articles on ADHD and/or articles using ADHD as a major independent variable.

Results

ADHD is a disorder that is closely connected to externalizing behaviors, conduct problems, and criminal behavior across the life course.

Conclusions

To date, ADHD research has been carried out primarily by biomedical researchers and de-emphasized by criminologists whose training is overwhelmingly in the social sciences. The special expertise of criminologists in uncovering environmental correlates of antisocial behavior can benefit biomedical researchers who in turn can assist criminologists in uncovering the individual-level correlates of antisocial behavior.  相似文献   
155.
This article critically examines the practice, methods, and regulation of cross‐border police cooperation between the Republic of Ireland and Northern Ireland. Despite legal and political divisions, police cooperation has survived and flourished in recent years especially among police officers on the ground. By comparison, the development of transparent regulatory and accountability structures and processes has been disappointing. While there have been domestic initiatives at the intergovernmental and legislative levels, these have tended to emphasize the centrality of direct engagement between the police chiefs and senior civil servants at the expense of formal transparent procedures. EU instruments have been marginalized as the police forces and their administrations prefer informal networks and force‐to‐force agreements which, it is argued, shield cross‐border police cooperation from standards of transparency, oversight, and accountability which are essential to its legitimacy. They also highlight the limitations of the current EU legislative approach to cross‐border police cooperation.  相似文献   
156.
In the present age of heightened emphasis on counter terrorism, law enforcement and forensic science are constantly evolving and adapting to the motivations and capabilities of terrorist groups and individuals. The use of biological agents on a population, such as anthrax spores, presents unique challenges to the forensic investigator, and the processing of contaminated evidence. In this research, a number of porous and nonporous items were contaminated with viable anthrax spores and marked with latent fingermarks. The test samples were then subjected to a standard formulation of formaldehyde gas. Latent fingermarks were then recovered post decontamination using a range of methods. Standard fumigation, while effective at destroying viable spores, contributed to the degradation of amino acids leading to loss of ridge detail. A new protocol for formaldehyde gas decontamination was developed which allows for the destruction of viable spores and the successful recovery of latent marks, all within a rapid response time of less than 1 h.  相似文献   
157.
DNA profiling results presented in court must be accompanied by a statistical estimate of its evidential weight. In calculating such statistics, allele frequencies from the tested loci are required. These allele frequencies should be collected at a level that appropriately represents the genetic diversity that exists in the population. This paper reports allele frequencies and the results of population genetic testing of autosomal microsatellite profiles from indigenous Australian donors. In contrast to previous practice these data have been collated according to traditional regional boundaries rather than recently imposed State and Territory borders.  相似文献   
158.
Child–parent violence (CPV) is arguably the most under-researched form of family violence, despite an extremely high rate of occurrence and increasing prevalence. Prior research has been plagued by shortcomings including, but not limited to, a reliance on small clinical samples, age parameter restrictions, antiquated data, undefined parental relationships, and conflicting findings across studies. The current research examined a large cross-national sample of reported offenders (n = 17,957), collected as part of the 2002 National Incident Based Reporting System (NIBRS). Extrapolated from past literature, victim and offender demographics and incident characteristics are analyzed using chi-square tests and logistic regression to establish baseline findings from a more comprehensive sample of data than previously existed. Aggregate results suggest, in part, that white biological mothers older than 40 years of age are most likely to be victimized by their male children 14–17 years of age. Further, a majority of assaults involve personal weapons and tend to result in minor injury or no injury with very few offenders under the influence of alcohol or drugs. This work both corroborates and contrasts past finding of CPV research providing new insights into this complex crime and the baseline data needed to inform theory and test hypotheses.
Jeffrey A. WalshEmail:
  相似文献   
159.
Gunshot backspatter comprises biological material expelled backward through bullet entry holes. Crime scene investigators analyze backspatter patterns to infer wounding circumstances. An understanding of the mechanism of backspatter generation, and the relationship between spatter patterns and bullet and tissue characteristics, would enhance the predictive value of such analysis. We examined soft-tissue ballistic wounding responses to determine the underlying components and how these might be relevant to the generation of backspatter. We identified five mechanistic components to ballistic wounding (elastic, viscous, crushing, cutting, and thermal), each related to mechanical disciplines (respectively, solid mechanics, fluid mechanics, fracture mechanics, rheology, and thermodynamics). We identified potential roles for these five components in backspatter formation and provide a scenario whereby a sequence of events incorporating these components could lead to backspatter generation and expulsion. This research provides a framework for the mathematical representation, and subsequent computational predictive modeling, of backspatter generation and pattern formation.  相似文献   
160.
Virginia v. Sebelius is a federal lawsuit in which Virginia has challenged President Obama's signature legislative initiative of health care reform. Virginia has sought declaratory and injunctive relief to vindicate a state statute declaring that no Virginia resident shall be required to buy health insurance. To defend this state law from the preemptive effect of federal law, Virginia has contended that the federal legislation's individual mandate to buy health insurance is unconstitutional. Virginia's lawsuit has been one of the most closely followed and politically salient federal cases in recent times. Yet the very features of the case that have contributed to its political salience also require its dismissal for lack of statutory subject matter jurisdiction. The Supreme Court has placed limits on statutory subject matter jurisdiction over declaratory judgment actions in which a state seeks a declaration that a state statute is not preempted by federal law--precisely the relief sought in Virginia v. Sebelius. These statutory limits are a sea wall; they keep out, on statutory grounds, some suits that should otherwise be kept out on Article III grounds. The statutory and constitutional limits on federal jurisdiction over suits like Virginia v. Sebelius insulate federal courts from the strong political forces surrounding lawsuits that follow from state statutes designed to create federal jurisdiction over constitutional challenges by states to federal law. This Article identifies previously neglected jurisdictional limits, shows why they demand dismissal of Virginia v. Sebelius, and explains why it is appropriate for federal courts to be closed to suits of this type.  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