全文获取类型
收费全文 | 258篇 |
免费 | 19篇 |
专业分类
各国政治 | 13篇 |
工人农民 | 15篇 |
世界政治 | 19篇 |
外交国际关系 | 21篇 |
法律 | 104篇 |
中国政治 | 11篇 |
政治理论 | 91篇 |
综合类 | 3篇 |
出版年
2023年 | 5篇 |
2022年 | 2篇 |
2021年 | 2篇 |
2020年 | 9篇 |
2019年 | 11篇 |
2018年 | 17篇 |
2017年 | 16篇 |
2016年 | 20篇 |
2015年 | 18篇 |
2014年 | 9篇 |
2013年 | 37篇 |
2012年 | 4篇 |
2011年 | 8篇 |
2010年 | 13篇 |
2009年 | 7篇 |
2008年 | 10篇 |
2007年 | 8篇 |
2006年 | 11篇 |
2005年 | 2篇 |
2003年 | 3篇 |
2002年 | 7篇 |
2001年 | 3篇 |
2000年 | 1篇 |
1998年 | 2篇 |
1997年 | 1篇 |
1996年 | 3篇 |
1995年 | 3篇 |
1994年 | 3篇 |
1993年 | 4篇 |
1992年 | 2篇 |
1991年 | 4篇 |
1989年 | 3篇 |
1988年 | 1篇 |
1987年 | 2篇 |
1986年 | 2篇 |
1985年 | 1篇 |
1984年 | 1篇 |
1983年 | 2篇 |
1982年 | 2篇 |
1981年 | 2篇 |
1980年 | 1篇 |
1979年 | 1篇 |
1978年 | 1篇 |
1976年 | 2篇 |
1975年 | 2篇 |
1973年 | 2篇 |
1969年 | 2篇 |
1968年 | 1篇 |
1967年 | 1篇 |
1966年 | 2篇 |
排序方式: 共有277条查询结果,搜索用时 15 毫秒
141.
Aaron M. Hoffman Dwaine H. A. Jengelley Natasha T. Duncan Melissa Buehler Meredith L. Rees 《Terrorism and Political Violence》2013,25(4):559-580
Observers argue that the business of news is responsible for worsening the coverage of terrorism, but exactly how economic considerations influence coverage is controversial. Based on an analysis of over 1600 articles from The Washington Post and USA Today, we find that concerns about the effects of economic pressures on terrorism reporting are exaggerated. The business climate affects coverage, but the long-term impact of market pressures on coverage is modest. Articles about terrorist violence are increasingly prominent, but coverage of counterterrorism remains robust. Efforts to inoculate the press against the worst excesses of the market are unnecessary. 相似文献
142.
Laura J. Hickman Claude M. Setodji Lisa H. Jaycox Aaron Kofner Dana Schultz Dionne Barnes-Proby Racine Harris 《Journal of Experimental Criminology》2013,9(3):301-331
Objectives
The study tests whether participation in interventions offered by a subset of sites from the National Safe Start Promising Approaches for Children Exposed to Violence initiative improved outcomes for children relative to controls.Methods
The study pools data from the nine Safe Start sites that randomized families to intervention and control groups, using a within-site block randomization strategy based on child age at baseline. Caregiver-reported outcomes, assessed at baseline, 6 and 12 months, included caregiver personal problems, caregiver resource problems, parenting stress, child and caregiver victimization, child trauma symptoms, child behavior problems, and social-emotional competence.Results
Results revealed no measurable intervention impact in intent-to-treat analyses at either 6- or 12-month post-baseline. In 6-month as-treated analyses, a medium to high intervention dose was associated with improvement on two measures of child social-emotional competence: cooperation and assertion. Overall, there is no reliable evidence of significant site-to-site effect variability, even in the two cases of significant intervention effect.Conclusions
Since families in both the intervention and control groups received some degree of case management and both groups improved over time, it may be advantageous to explore the potential impacts of crisis and case management separately from mental health interventions. It may be that, on average, children in families whose basic needs are being attended to improve substantially on their own. 相似文献143.
144.
145.
Aaron Vessup 《北京周报(英文版)》2015,(19):48-48
<正>They were racing through Beijing's busy traffic,actually racing,weaving in and out between cars until coming to a halt in front of a traffic light.The vehicle was a small white utility van,with large English lettering painted on the side panel.As our bus edged forward and came parallel with the van,while in an adjacent lane,I could see inside this anxious van two Chinese men laughing and chatting.Were they trying to flee from someone?What was the great rush?Was there an appointment to be kept that demanded the execution of emergency maneuvers in morning traffic?Then I looked again at the characters adorning their vehicle.Their extreme haste suddenly became explicable:The characters read,"Re-Conditioned Oil for Cooking Needs!""Food safety is now a global concern.Even in the United States where strict food supervision and management of safety exist,accidents still occur.Although food safety issues are difficult to eliminate,the United 相似文献
146.
Aaron M. Ramirez James R. Andretta Michael E. Barnes Malcolm H. Woodland 《Juvenile & family court journal》2015,66(1):31-46
Few researchers have examined outcomes in Juvenile Mental Health Courts. Recidivism rates were assessed among 108 predominantly African American (95.3%) youth. Ages ranged from 12 to 18 (M = 15.85, SD = 1.45). Substantially fewer re‐convictions, along with re‐arrests, were exhibited among the treatment group (n = 54) compared to the control group (n = 54) after one year of participation or probation supervision. Psychiatric symptomatology among 21 youth was assessed pre‐ and post‐ intervention using the Comprehensive Behavior Rating Scales‐Self Report. Cohen's d effect sizes indicated substantial reductions in mental health symptoms (.33 ≥ d ≤ .88). Results are consistent with the previous studies of problem‐solving court efficacy. 相似文献
147.
For the last 40 years, Keith Poole has developed and curated a trove of basic data and measurements related to the United States Congress. He has made these resources freely available through his widely-used Voteview.com website since 1995. At Poole’s Voteview.com, scholars, students, journalists, and the broader public could download gold-standard historical and current roll-call voting data, member rosters, NOMINATE scores, and measures and visualizations of party cohesion and polarization, among many other useful things. In this article, we describe how we are preserving and continuing these vast public-goods contributions through the new Voteview.com. Developed and housed at UCLA, the new Voteview.com carries on the creation of basic roll-call data infrastructure, including the assignment of Poole’s widely-used ICPSR number-like identifiers to new members, data on every roll-call vote ever taken, NOMINATE scores and other standard roll-call vote-based measures such as party-loyalty scores. In addition to serving as a platform for the continuation and dissemination of this basic data infrastructure, the new Voteview.com also provides powerful tools for exploring the history of roll-call voting, the US Congress, and American politics and political history through a simple search interface and interactive visualizations. 相似文献
148.
149.
150.
Though many more patents emerge from industry sources, drug-related patents generated in the non-profit setting appear to have greater importance than patents arising from the commercial sector, which helps demonstrate the value non-profit research institutions can have in driving drug development. 相似文献