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   561篇
  免费   12篇
各国政治   27篇
工人农民   81篇
世界政治   27篇
外交国际关系   28篇
法律   302篇
中国政治   4篇
政治理论   99篇
综合类   5篇
  2023年   2篇
  2022年   2篇
  2021年   6篇
  2020年   8篇
  2019年   9篇
  2018年   17篇
  2017年   9篇
  2016年   15篇
  2015年   18篇
  2014年   13篇
  2013年   84篇
  2012年   25篇
  2011年   15篇
  2010年   9篇
  2009年   16篇
  2008年   23篇
  2007年   17篇
  2006年   25篇
  2005年   18篇
  2004年   18篇
  2003年   15篇
  2002年   14篇
  2001年   13篇
  2000年   14篇
  1999年   5篇
  1998年   8篇
  1997年   11篇
  1996年   6篇
  1995年   7篇
  1994年   9篇
  1993年   7篇
  1992年   10篇
  1991年   9篇
  1990年   12篇
  1989年   10篇
  1988年   5篇
  1987年   10篇
  1986年   4篇
  1985年   9篇
  1984年   4篇
  1983年   11篇
  1982年   4篇
  1981年   4篇
  1980年   3篇
  1979年   3篇
  1978年   5篇
  1977年   4篇
  1976年   4篇
  1975年   2篇
  1968年   1篇
排序方式: 共有573条查询结果,搜索用时 15 毫秒
151.
Findings from climate change vulnerability assessments can inform decision-makers in their evaluation of options to reduce the negative impacts of climate change. Certain attributes of an assessment can improve the use or uptake of its results. The science policy literature describes three characteristics – credibility, salience, and legitimacy – as being necessary for the uptake of scientific results for decision-making. We draw from the experiences of eight climate change vulnerability assessments conducted in Africa and Latin America for USAID (United States Agency for International Development) to explore the practical application of these three characteristics to fostering uptake of the assessment results.  相似文献   
152.
What are the key challenges for the public sector at present, and what will the future public service look like if it is to meet these challenges? These questions were put to public‐sector leaders at a conference at the Wye River Plantation in June 1999. The leaders agreed on aspects of a broad vision for the future and the urgent need for a detailed debate on the transition questions that arose.  相似文献   
153.
Tuitt  Patricia 《Law and Critique》2000,11(2):201-217
This paper seeks to intervene in the continuing debate around violence as a function of law and violence as a condition of justice. It examines a key literary work of the American civil rights movement as an instance of the establishment of an ethical community anchored by the literary text, and argues that, within such a community, the literary text is the counter-violence to which the law can yield. This revised version was published online in July 2006 with corrections to the Cover Date.  相似文献   
154.
Journal of Youth and Adolescence - Strong school engagement is crucial for school success among adolescents and particularly important for reducing recidivism. Yet, little is known about school...  相似文献   
155.
The U.S. incarceration rate rose dramatically over the past 45 years, increasing the number of marriages and cohabiting unions disrupted by a jail or prison stay. But as some have pointed out, not all unions dissolve as a result of incarceration, and there seems to be racial–ethnic variation in this tendency, with Blacks displaying higher rates of dissolution than Whites and Hispanics. Yet it is unclear what explains racial–ethnic differences in union dissolution among the incarcerated. Drawing on the National Longitudinal Survey of Youth 1997 (NLSY97), we examine why racial–ethnic differences in union dissolution exist among a sample of individuals who had a marital or a cohabiting union interrupted by an incarceration spell. In doing so, we draw on social exchange theory and structural and cultural theories to suggest that racial–ethnic disparities in union dissolution are explained by differential exposure to protective relationship characteristics. The results of Cox hazard models reveal that Blacks have significantly higher hazards of union dissolution than do Whites and Hispanics. These results also indicate that being married, having a child together, having full-time employment, a longer union duration, and a shorter incarceration spell may protect against dissolution and that these factors account, in part, for the greater risk of dissolution among Blacks relative to Whites and Hispanics.  相似文献   
156.
Psilocin (4-hydroxy-N,N-dimethyltryptamine, 4-HO-DMT) and bufotenine (5-hydroxy-N,N-dimethyltryptamine, 5-HO-DMT), which are both naturally occurring compounds, are classified as controlled substances in numerous countries due to their pharmacological activities and recreational usage. There are two other benzene ring regioisomers, 6-hydroxy-N,N-dimethyltryptamine (6-HO-DMT) and 7-hydroxy-N,N-dimethyltryptamine (7-HO-DMT), which are not classified by name as controlled substances, and which were synthesized for this current work. The four isomers were analyzed using routine methodologies employed by the Israel's Police Division of Identification and Forensic Science (DIFS) Laboratory, namely thin layer chromatography (TLC), Fourier transform infrared spectroscopy (FTIR), and gas chromatography mass spectroscopy (GC-MS). It was found possible to differentiate the four isomers. Forensic specimens that were suspected to be psilocybe mushrooms were examined, confirming that it is now possible to unequivocally identify the presence of psilocin and rule out the presence of its other isomers.  相似文献   
157.
Over the past decade, the large numbers of untested sexual assault kits (SAKs) have been highlighted as a systematic problem that jeopardizes or delays justice for victims. Considering the benefits of testing SAKs, researchers have worked to shed light on why sexual assault evidence has not been effectively submitted to and processed by crime laboratories. Missing from this discourse has been an understanding of the types of practices or qualities that encourage efficiency in the testing of SAKs in crime laboratories. We analyzed results of a national survey administered to all publicly funded state and local crime laboratories (N = 132 respondents) to provide critical information about (i) the extent to which laboratories are testing all of the SAKs possible given the resources they have available; and (ii) the impact that staffing, equipment, policies, and other practices have on SAK testing efficiency. We find that the average laboratory tests only about 69% of the SAKs possible given the resources available to them. However, although technical inefficiencies explain a large proportion of the number of untested SAKs, the accumulation of untested SAKs must also be attributed to laboratories having insufficient resources (e.g., too few forensic analysts). Moreover, results from stochastic frontier models show that doubling the number of forensic analysts in the typical laboratory would allow them to expand their SAK testing capacity by nearly 50%. Implications of these findings are discussed as they relate to the prioritization of resources for crime laboratories, which often operate under strict budgetary realities.  相似文献   
158.
159.
160.
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