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   1137篇
  免费   50篇
各国政治   48篇
工人农民   58篇
世界政治   140篇
外交国际关系   68篇
法律   511篇
中国政治   5篇
政治理论   352篇
综合类   5篇
  2023年   6篇
  2022年   3篇
  2021年   9篇
  2020年   23篇
  2019年   31篇
  2018年   39篇
  2017年   39篇
  2016年   51篇
  2015年   30篇
  2014年   33篇
  2013年   169篇
  2012年   26篇
  2011年   41篇
  2010年   23篇
  2009年   33篇
  2008年   36篇
  2007年   58篇
  2006年   40篇
  2005年   35篇
  2004年   37篇
  2003年   35篇
  2002年   35篇
  2001年   30篇
  2000年   19篇
  1999年   14篇
  1998年   17篇
  1997年   19篇
  1996年   19篇
  1995年   14篇
  1994年   20篇
  1993年   17篇
  1992年   13篇
  1991年   17篇
  1990年   11篇
  1989年   15篇
  1988年   17篇
  1987年   11篇
  1986年   15篇
  1985年   9篇
  1984年   21篇
  1983年   6篇
  1982年   11篇
  1981年   8篇
  1980年   3篇
  1979年   4篇
  1978年   4篇
  1977年   6篇
  1975年   5篇
  1974年   4篇
  1973年   2篇
排序方式: 共有1187条查询结果,搜索用时 31 毫秒
911.
912.
The National Institute on Drug Abuse has observed an increase in fentanyl deaths in the United States. One epidemic related to the abuse of fentanyl happened in Cook County in 2005–2007 (350 deaths). Another outbreak of fentanyl deaths occurred in 2015–2017 in the same area. The database of the Cook County Medical Examiner's Office was searched for cases of fentanyl deaths between 2015 and 2017: 1244 deaths were found. A comparison was performed with the previous data: an increase in the number of females was observed in 2015–2017. Also, in 2005–2007, the majority of deaths occurred among African American, while in 2015–2017, Caucasians were more involved. Within our population, some drug combinations were more common in specific demographic subgroups (male/females; Caucasian/African American; and certain age groups). The epidemiology and the most significant drug associations found at the toxicology are discussed, highlighting the usefulness of the knowledge about this outbreak for public health.  相似文献   
913.
Objectives

Begun in 1939, the Cambridge-Somerville Youth Study (CSYS) is recognized as the first delinquency prevention experiment and the earliest example of a longitudinal–experimental study with criminological outcomes. This paper aims to develop a historical understanding of the origins of the study’s research design.

Methods

The present study is guided by the socio-historical approach and informed by past historical research in criminology. It draws upon a wide array of archival records and published works from the late nineteenth century to the present day.

Results

Richard Clarke Cabot designed and directed the CSYS. Major influences on the study’s research design can be traced to Cabot’s medical practice and research, his advocacy for social work practice and research, and his professional relationship with the Gluecks. The beginnings of experimentation in the social sciences during the early twentieth century may have also played a role. Joan McCord’s early involvement in the study proved instrumental to its longitudinal component.

Conclusions

The rigorous and innovative research design of the CSYS marks an important chapter in the history of experimental criminology, and its influence continues to this day. New experimental studies on the prevention of crime and delinquency must continue to strive to advance scientific knowledge and improve public policy.

  相似文献   
914.
In recent decades, the number of juvenile defendants transferred to criminal court has increased dramatically, in large measure due to an expansion of available transfer mechanisms. While transfer traditionally occurred by judicial waiver of jurisdiction, alternatives have emerged and eclipsed judicial waiver as the primary route to adult court. The present study examines whether the mechanism of waiver—judicial, prosecutorial, or legislative—affects sentencing outcomes for juvenile defendants transferred to adult court. Results from multilevel models that control for state-level variation indicate that sentencing outcomes are inextricably tied to method of transfer. Most notably, non-criminal outcomes are most likely for cases that arrive in criminal court by legislative waiver. This suggests that legislative waiver is an ineffective means of sending juvenile offenders to criminal court, and provides some empirical support for the notion that judicial waiver is the most appropriate method of transfer.  相似文献   
915.
916.
Suspects accused of involvement in the same crime can be tried in one multiple-defendant trial. While research has long demonstrated the difficulties of being a juror, no published work has examined whether multiple-defendant trials compound these difficulties. The current research recruited both student and community samples to determine whether trying multiple defendants would increase conviction rates for individual defendants. Every participant watched one of three trial videos – a single defendant against whom the State had a strong case (single-strong), a single-defendant against whom the State had a weak case (single-weak), or a multiple-defendant trial combining both defendants (multiple-defendant). The findings demonstrated an overshare effect – when the defendants were tried together, overall conviction rates for both defendants increased relative to when they were tried alone, though the pattern of results differed by study sample. Although we are unable to provide a definitive mechanism underlying the results, the best explanation seems to be that multiple-defendant trials prompt jurors to engage in a joint evaluation of the defendants, rather than single evaluations of each. Consequently, participant-jurors’ perceptions of each defendant are impacted by how they compare with one another. Thus, the current research casts some doubt on the fairness of multiple-defendant trials.  相似文献   
917.
This paper offers a methodological intervention into the study and understanding of regulation and compliance with respect to corporate crime. We advocate Pierre Bourdieu’s “praxeological” sociology as the bases for what we hold is an innovative model of regulation and compliance. The praxeological or relational approach offers structural analyses that take seriously the constructivist fixation with meaning, subjectivity, and perception without succumbing to the limitations of an interactionist conception of power. We first show theoretical affinities between the work of Pierre Bourdieu and Louis Althusser in order to highlight their shared concern with subject formation and their respective conceptions of “mis/recognition”. As this provides us with the theoretical basis of a more robust theory of regulation and compliance than is commonly found within the corporate crime literature, we argue that studies of corporate wrongdoing would benefit from rethinking the conceptions of compliance that currently shape corporate crime scholarship. We then demonstrate the benefits of this praxeological approach to regulation and compliance through discussion of the state’s efforts to discipline corporations through criminal law in Canada and the United Kingdom.  相似文献   
918.
The aim of this pilot study was to investigate compositional changes in bone during decomposition. Elemental concentrations of barium, calcium, iron, potassium, magnesium, zinc and phosphorus in porcine bone (as an experimental analog for human bone) were analyzed by inductively coupled plasma optical emission spectroscopy (ICP‐OES). The samples were taken from porcine bone subjected to shallow burial and surface depositions at 28‐day intervals for a period of 140 days. Results indicated that ICP‐OES elemental profiling has potential to be developed as a forensic test for determining whether a bone sample originates from the early stages of soft tissue putrefaction. Significant changes in iron, sodium and potassium concentrations were found over 140 days. These elements are known to be primarily associated with proteins and/or tissue fluids within the bone. Changes in their respective concentrations may therefore be linked to dehydration over time and in turn may be indicative of time since deposition.  相似文献   
919.
The current study explores bullying behaviours among adult male prisoners, examining its relationship with aggression attribution and impulsivity. Employed are two separate methods of analysis to determine how this may influence results. Participants were 102 prisoners. All completed a revised version of the Direct and Indirect Prisoner behaviour Checklist (DIPC-R), the Barratt Impulsivity Scale: Version II (BIS-12) and the Expressive Aggression Scale (EXPAGG). Analysis included categorical analysis with prisoners placed into one of four groups (pure bully, pure victim, bully/victim and not-involved), and factorial analysis where perpetration and victimisation were assessed as continuous variables and evidence of interactions explored. It was predicted that perpetration would be associated with higher instrumental attributions and higher impulsivity than non-perpetration. It was predicted that a factorial analysis would demonstrate no interactions between perpetration and victimisation across aggression variables, questioning the utility of a distinct ‘bully–victim’ group. Bullies were found to have higher instrumental attribution scores than non-bullies, with no differences for expressive attribution. Victims were more impulsive than non-victims with evidence that perpetration moderated this relationship. A categorical analysis demonstrated that bully/victims were more impulsive, at least in relation to pure bullies. Results suggested that it was the combined effect of indirect and direct aggression which promoted differences between victims and bullies in relation to attribution and impulsivity. Results are discussed with reference to previous research concerning prison bullying, with directions for future research focused on exploration of perpetrator–victim mutuality using a range of variables and distinct methods of analysis.  相似文献   
920.
This paper focuses on the effects of political ideology and party affiliation on support for more government spending on environmental protection. Pooled‐sample results show that Liberals (Democrats) are more likely to support higher government spending on environmental protection than Moderates (Independents), who, in turn, are more likely to support higher spending levels than Conservatives (Republicans). The results persist even when we control for respondents' opinions concerning whether the federal government, in general, does too little or too much. When stratifying by party, ideological divisions generally narrow, while stratifying by ideology leads to slightly wider divisions between Democrats and Republicans. Together, these results suggest that when Liberals and Conservatives form opinions about government spending on the environment, party affiliation, to some degree, dampens the effects of ideology. Between 2014 and 2018 the probability of supporting more environmental spending increased, albeit slightly, for all ideologies and parties, but more so for Liberals and Democrats.  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