全文获取类型
收费全文 | 6186篇 |
免费 | 203篇 |
专业分类
各国政治 | 477篇 |
工人农民 | 178篇 |
世界政治 | 644篇 |
外交国际关系 | 391篇 |
法律 | 2612篇 |
中国政治 | 35篇 |
政治理论 | 1974篇 |
综合类 | 78篇 |
出版年
2023年 | 28篇 |
2021年 | 26篇 |
2020年 | 77篇 |
2019年 | 106篇 |
2018年 | 146篇 |
2017年 | 169篇 |
2016年 | 174篇 |
2015年 | 123篇 |
2014年 | 165篇 |
2013年 | 990篇 |
2012年 | 155篇 |
2011年 | 179篇 |
2010年 | 148篇 |
2009年 | 148篇 |
2008年 | 202篇 |
2007年 | 264篇 |
2006年 | 207篇 |
2005年 | 184篇 |
2004年 | 202篇 |
2003年 | 197篇 |
2002年 | 194篇 |
2001年 | 115篇 |
2000年 | 126篇 |
1999年 | 102篇 |
1998年 | 132篇 |
1997年 | 104篇 |
1996年 | 110篇 |
1995年 | 86篇 |
1994年 | 79篇 |
1993年 | 94篇 |
1992年 | 79篇 |
1991年 | 98篇 |
1990年 | 80篇 |
1989年 | 70篇 |
1988年 | 82篇 |
1987年 | 87篇 |
1986年 | 88篇 |
1985年 | 57篇 |
1984年 | 77篇 |
1983年 | 72篇 |
1982年 | 70篇 |
1981年 | 50篇 |
1980年 | 48篇 |
1979年 | 45篇 |
1978年 | 45篇 |
1977年 | 46篇 |
1976年 | 31篇 |
1975年 | 27篇 |
1974年 | 27篇 |
1973年 | 34篇 |
排序方式: 共有6389条查询结果,搜索用时 15 毫秒
41.
Germ-line Gene Therapy: A New Stage of Debate 总被引:1,自引:0,他引:1
42.
43.
In this paper we examine the legal aspects of corporate computer usage policies including their creation, management, and their relevance to corporate computer forensic investigations. Misuse of corporate computing facilities cannot only lead to a reduction in employee productivity and network bandwidth, but can also increase the risk of infection of such facilities by computer viruses and other malicious code. Moreover, it may lead to the risk of liability and legal action. 相似文献
44.
John Pratt 《Crime, Law and Social Change》1990,14(3):219-242
This paper examines current developments in the social control of youth crime and delinquency in England and Wales. It argues that the usual critical explanations of these developments, in the form of the dispersal of discipline or the social authoritarianism thesis are inadequate. Instead, it is suggested that the punishment has taken on a more effective and efficient format in the management of this problem group than either of the above would have made possible. 相似文献
45.
46.
John Kerbs Ph.D. Kyubeom Choi Ph.D. Stephen Rollin Ed.D. Robert Gutierrez Ed.D. Isabelle Potts J.D. Jayme Harpring Ph.D. Alia H. Creason Ph.D. Tam Dao M.S. 《American Journal of Criminal Justice》2005,30(1):121-141
Although past research has developed scales for the incidence, prevalence, and fear of student-on-student victimization (SSV),
little is known about the scaling of perceived risk (i.e., the cognitive appraisal of the chances of experiencing SSV). Hence,
this study examined self-report survey data for the perceived risk of SSV as measured in the Adolescent Index for School Safety
(AISS). Children in grades 7 through 10 (n=337) in a single Florida public school completed the AISS. Factor analyses using
Maximum Likelihood Estimation with Oblimin Rotation identified nine unique factors for perceived risk. Reliability analyses
found standardized Cronbach Alphas that ranged from .64 to .91, and seven out of the nine identified scales were above .80,
which suggested good to excellent internal consistency. Future research should examine the content validity, construct validity,
and predictive validity for the AISS and other self-report surveys of SSV dynamics.
This publication was made possible by a grant [#97-MU-FX-KO12 (S-l)] from the Office of Juvenile Justice and Delinquency Prevention
(O.J.J.D.P.), United States Department of Justice (U.S.D.O.J.). This grant is administered through the Hamilton Fish National
Institute on School and Community Violence at George Washington University. This specific study was developed and implemented
by staff at: 1) East Carolina University’s Department of Criminal Justice; and 2) Florida State University’s Center for Educational
Research and Policy Studies. All points of view and opinions in this paper are those of the authors and do not necessarily
represent the official position or policies of East Carolina University, Florida State University, the Hamilton Fish National
Institute on School and Community Violence, the O.J.J.D.P., or the U.S.D.OJ. The authors would also like to thank Dr. Bill
Doerner and Jennifer Jolley for their support, editorial feedback, and insightful comments regarding earlier drafts of this
paper. 相似文献
47.
48.
Emily Jackson 《The Modern law review》2002,65(2):176-203
This article challenges the assumption that their future children's welfare is a relevant consideration when deciding whether to provide a person with assisted conception services. It does not argue that infertility treatment ought to be available as of right. Rather, this article's proposal is that section 13(5) – which specifies that no-one shall receive assistance with conception unless account has first been taken of the welfare of any child who might be born – should be deleted from the Human Fertilisation and Embryology Act 1990. Extending the 'welfare principle' to decisions taken prior to a child's conception is shown to be unjust, meaningless and inconsistent with existing legal principle. 相似文献
49.
50.
Restoring accountability in pretrial release: the Philadelphia pretrial release supervision experiments 总被引:1,自引:1,他引:0
As drug arrests and jail overcrowding added pressure to increase pretrial release in localities during the 1980s and 1990s, the need to manage a larger and higher-risk pretrial population of defendants awaiting adjudication in the community became a high priority for justice agencies. In the late 1990s Philadelphia officials sought to discover the ingredients of a successful supervision strategy through four interlinked field experiments to provide an empirical basis for a major reform of the pretrial release system. The results of the linked randomized experiments question common assumptions about “supervision,” its impact and effectiveness, about the underlying nature of the noncompliant defendant, and deterrence implications. The study emphasizes the importance of interpreting the findings in the context of implementation of the policy reform. Findings suggest that facilitative notification strategies wield little influence on defendant behavior and that deterrent aims are undermined by the system's failure to deliver consequences for defendant noncompliance during pretrial release. The most significant contribution of the article is its illustration of a major evidence-based policy reform undertaken by a major court system. 相似文献