全文获取类型
收费全文 | 622篇 |
免费 | 24篇 |
专业分类
各国政治 | 57篇 |
工人农民 | 40篇 |
世界政治 | 66篇 |
外交国际关系 | 23篇 |
法律 | 261篇 |
中国政治 | 4篇 |
政治理论 | 190篇 |
综合类 | 5篇 |
出版年
2023年 | 4篇 |
2021年 | 8篇 |
2020年 | 9篇 |
2019年 | 13篇 |
2018年 | 28篇 |
2017年 | 21篇 |
2016年 | 27篇 |
2015年 | 6篇 |
2014年 | 12篇 |
2013年 | 99篇 |
2012年 | 12篇 |
2011年 | 17篇 |
2010年 | 18篇 |
2009年 | 15篇 |
2008年 | 20篇 |
2007年 | 23篇 |
2006年 | 22篇 |
2005年 | 12篇 |
2004年 | 12篇 |
2003年 | 22篇 |
2002年 | 16篇 |
2001年 | 6篇 |
2000年 | 13篇 |
1999年 | 7篇 |
1998年 | 8篇 |
1997年 | 8篇 |
1996年 | 4篇 |
1995年 | 6篇 |
1994年 | 9篇 |
1993年 | 6篇 |
1992年 | 12篇 |
1991年 | 6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 | 10篇 |
1982年 | 12篇 |
1981年 | 7篇 |
1980年 | 4篇 |
1979年 | 8篇 |
1977年 | 5篇 |
1974年 | 4篇 |
1973年 | 8篇 |
1970年 | 4篇 |
1968年 | 5篇 |
1966年 | 5篇 |
1943年 | 3篇 |
排序方式: 共有646条查询结果,搜索用时 15 毫秒
561.
Henry M. Levin 《Journal of policy analysis and management》1998,17(3):373-392
Most of the policy discussion on the effects of educational vouchers has been premised on theoretical or ideological positions rather than evidence. This article analyzes a substantial body of recent empirical evidence on achievement differences between public and private schools; on who chooses and its probable impact on educational equity; and on the comparative costs of public and private schools and an overall voucher system. The findings indicate that: (1) results among numerous studies suggest no difference or only a slight advantage for private schools over public schools in student achievement for a given student, but evidence of substantially higher rates of graduation, college attendance, and college graduation for Catholic high school students; (2) evidence is consistent that educational choice leads to greater socioeconomic (SES) and racial segregation of students; and (3) evidence does not support the contention that costs of private schools are considerably lower than those of public schools, but the costs of an overall voucher infrastructure appear to exceed those of the present system. 相似文献
562.
563.
Rackley Erika McGlynn Clare Johnson Kelly Henry Nicola Gavey Nicola Flynn Asher Powell Anastasia 《Feminist Legal Studies》2021,29(3):293-322
Feminist Legal Studies - Despite apparent political concern and action—often fuelled by high-profile cases and campaigns—legislative and institutional responses to image-based sexual... 相似文献
564.
Deborah Gorman-Smith Patrick H. Tolan David B. Henry 《Journal of Quantitative Criminology》2000,16(2):169-198
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
565.
Stephen W. Lucente William Fals-Stewart Henry J. Richards Jason Goscha 《Journal of family violence》2001,16(4):437-450
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
566.
Krous HF Haas EA Chadwick AE Masoumi H Mhoyan A Stanley C 《Forensic science international》2008,176(2-3):209-216
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
567.
568.
569.
570.