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   356篇
  免费   9篇
各国政治   15篇
工人农民   43篇
世界政治   19篇
外交国际关系   18篇
法律   154篇
中国共产党   1篇
中国政治   13篇
政治理论   101篇
综合类   1篇
  2022年   2篇
  2020年   2篇
  2019年   8篇
  2018年   10篇
  2017年   14篇
  2016年   13篇
  2015年   9篇
  2014年   8篇
  2013年   45篇
  2012年   4篇
  2011年   9篇
  2010年   11篇
  2009年   11篇
  2008年   14篇
  2007年   17篇
  2006年   6篇
  2005年   2篇
  2004年   13篇
  2003年   14篇
  2002年   13篇
  2001年   7篇
  2000年   8篇
  1999年   5篇
  1998年   9篇
  1997年   10篇
  1996年   4篇
  1995年   3篇
  1994年   5篇
  1993年   7篇
  1992年   7篇
  1991年   6篇
  1990年   8篇
  1989年   9篇
  1988年   4篇
  1987年   6篇
  1986年   3篇
  1985年   4篇
  1984年   2篇
  1982年   3篇
  1981年   3篇
  1980年   3篇
  1979年   2篇
  1978年   4篇
  1977年   2篇
  1976年   3篇
  1975年   2篇
  1974年   4篇
  1969年   1篇
  1967年   1篇
  1963年   1篇
排序方式: 共有365条查询结果,搜索用时 15 毫秒
141.
In response to continued concerns over crime and violence, schools are increasingly employing visible security measures such as cameras, metal detectors, and security personnel. These security measures are not mutually exclusive, but few studies have considered the relationship between the use of multiple forms of security and youth’s exposure to drugs, fighting, property crime, and firearms at school. To address this issue, we analyzed nationally representative school administrator-reported data from the School Survey on Crime & Safety, using a quasi-experimental design with propensity scores to adjust for potential confounding factors. The results indicated that utilization of multiple security measures reduced the likelihood of exposure to property crime in high schools, but most other security utilization patterns were associated with poorer school safety outcomes. Our findings provide guidance to policymakers in considering whether to use – or expand – visible school security measures in schools.  相似文献   
142.
Gender has been hypothesized to affect how violent offenders are treated within the criminal justice system, but studies have tended to ignore the role of the victim in decision making. This study explores the interactive effects of offender and victim sex (i.e., the sex dyad) on reporting and arrest of one-on-one assaultive crime. Using data from the National Crime Victimization Survey and National Incident-Based Reporting System, findings show that male-on-female offenses are reported to police more often than other dyads, but female-on-male offenses result in more arrests. Meanwhile, female-on-female offenses result in fewer arrests, despite nonsignificant differences in reporting. Implications of findings for theory and future research on gender discretion are discussed.  相似文献   
143.
Abstract: Recently, the authors have noted that many studies involving the characterization of chopping weapon wounds have used either semi‐fleshed or defleshed bones (e.g., J Forensic Sci 2001; 46: 228). As these types of specimens do not reflect the full range of actual cases of postmortem dismemberment or perimortem trauma, 11 fresh pig (Sus scrofa) articulated hind limbs, with contiguous surrounding flesh, were inflicted with wounds using two axes and two hatchets. Defleshed humeri and femora were subjected to the same treatment. While there were no great differences found between the fleshed and defleshed specimens, characteristics observed including entrance site width and the presence of chattering were inconsistent with some aspects of Humphrey and Hutchinson’s study (J Forensic Sci 2001; 46: 228). Further, it was found that curve transverse and spiral fractures were prevalent in femora, while longitudinal fractures were prevalent in fibulae. Hence, fracture types may play a role in characterizing some wounds caused by chopping weapons.  相似文献   
144.
145.
146.
147.
Why I Don't Have a Living Will   总被引:1,自引:0,他引:1  
  相似文献   
148.
149.
150.
If the lights that guide us ever go out, they will fade little by little, as if of their own accord. Confining ourselves to practice, we may lose sight of basic principles, and when these have been entirely forgotten, we may apply the methods derived from them badly; we might be left without the capacity to invent new methods, and only able to make a clumsy and an unintelligent use of wise procedures no longer understood.  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