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   558篇
  免费   24篇
各国政治   51篇
工人农民   37篇
世界政治   62篇
外交国际关系   20篇
法律   226篇
中国政治   4篇
政治理论   179篇
综合类   3篇
  2023年   4篇
  2021年   8篇
  2020年   7篇
  2019年   10篇
  2018年   27篇
  2017年   19篇
  2016年   25篇
  2015年   6篇
  2014年   10篇
  2013年   89篇
  2012年   11篇
  2011年   14篇
  2010年   17篇
  2009年   10篇
  2008年   14篇
  2007年   21篇
  2006年   21篇
  2005年   11篇
  2004年   11篇
  2003年   18篇
  2002年   13篇
  2001年   4篇
  2000年   13篇
  1999年   7篇
  1998年   8篇
  1997年   7篇
  1995年   5篇
  1994年   8篇
  1993年   6篇
  1992年   10篇
  1991年   5篇
  1990年   8篇
  1989年   6篇
  1987年   6篇
  1986年   5篇
  1985年   15篇
  1984年   4篇
  1983年   9篇
  1982年   12篇
  1981年   7篇
  1980年   4篇
  1979年   8篇
  1977年   5篇
  1974年   3篇
  1973年   8篇
  1970年   4篇
  1968年   5篇
  1966年   5篇
  1965年   3篇
  1943年   3篇
排序方式: 共有582条查询结果,搜索用时 15 毫秒
511.
Person-centered approaches to understanding delinquent and criminal careershave identified several distinct pathways or patterns of delinquent behavior(Gorman-Smith et al., 1998; LeBlanc and Kaspy, in press; Loeber et al.,1991; Loeber et al., 1993). In addition, research suggests that there maybe etiological variations that correspond to these different pathways(Gorman-Smith et al., 1998). That is, there may be different configurationsof risk factors associated with different types of delinquent and criminaloffending. If this is so, understanding these relations can have importantimplications for intervention and prevention. However, there have been fewstudies that examine how the configuration of risk factors may vary inrelation to different delinquency pathways. The current study brings aperson-centered analysis to examine how patterns of family functioningrelate to patterns of offending. In addition, this study contextualizesthese relations by examining how these relations vary as a function ofcommunity setting. This study expands upon previous research that hasidentified four basic patterns of delinquent behavior among a sample ofminority male adolescents living in poor urban neighborhoods (Gorman-Smithet al., 1998).  相似文献   
512.
Incarcerated women with a history of substance abuse often experience intimate partner violence (IPV), both as victims and as perpetrators. The issues surrounding partner violence and substance abuse are complex, and accurate assessment of this population's experience is critical to ensure proper treatment planning and program development. One of the most common instruments with which to measure IPV is the Conflict Tactics Scales (CTS). Unfortunately, very little published data exist on the revised version of the Conflict Tactics Scales (CTS2), and no data could be located in the literature using this scale with incarcerated women. The purpose of this investigation was to examine the underlying factor structure and reliability of the CTS2 for 359 incarcerated women who had voluntarily participated in a 1–year long substance abuse treatment program. Item analysis revealed a high level of reliability for the overall scale as well as for the individual subscales. Additionally, results from the confirmatory multiple group factor analysis support the 5 underlying subscales, and taken together indicate that the scale is acceptable to use with this population.  相似文献   
513.
A fraction of SIDS cases have death delayed by successful CPR, yet they have not been compared to SIDS cases which were found dead or not successfully resuscitated. Our aims were to: (1) determine the percent of SIDS cases in the San Diego SIDS Research Project database for whom death was delayed by CPR and subsequent life support; (2) compare demographics, circumstances of death and autopsy findings of delayed death SIDS cases (delayed SIDS) with those whose deaths were not delayed (non-delayed SIDS); (3) examine the evolution of pathologic changes in delayed SIDS as a function of survival interval. A retrospective 15-year population-based study of 454 infant deaths attributed to SIDS revealed 29 delayed SIDS cases (Group I) and 425 non-delayed SIDS cases (Group II). Group I cases were significantly older than Group II cases (mean age 132 days vs. 102 days and p<0.0001). Eighty-nine percent of the Group I cases were discovered between 08.00 and 19.59 h; none were found between 00.00 and 07.59 h, compared to 38% of the Group II cases. Group I infants were found significantly more often away from home (at daycare, or at the home of a relative, friend, or baby sitter) than Group II infants (45% vs. 25%, p<0.05). There were no differences between groups with regard to gender, gestational age, type of delivery, bed sharing, URI within 48 h of death, ALTEs, a history of referral to child protective services, body position when placed or found, or face position when found. Pathologic changes were semiquantitatively evaluated; findings were characteristic of anoxic-ischemic injury that generally became more severe with increasing survival intervals. Anoxic-ischemic brain injury was the immediate cause of death in all delayed SIDS cases. Aspiration of gastric contents was identified in Group I cases surviving less than 48 h and was the likely etiology of acute bronchopneumonia occurring in 83% of the Group I cases. We did not identify factors that would reliably predict which SIDS cases might be discovered soon enough to allow earlier and more effective CPR and survival without permanent brain injury.  相似文献   
514.
515.
516.
517.
518.
Norway     
European Journal of Political Research -  相似文献   
519.
520.
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