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   13464篇
  免费   1267篇
各国政治   467篇
工人农民   540篇
世界政治   900篇
外交国际关系   341篇
法律   10255篇
中国共产党   1篇
中国政治   91篇
政治理论   2052篇
综合类   84篇
  2020年   344篇
  2019年   347篇
  2018年   474篇
  2017年   479篇
  2016年   570篇
  2015年   472篇
  2014年   437篇
  2013年   1262篇
  2012年   401篇
  2011年   465篇
  2010年   550篇
  2009年   531篇
  2008年   309篇
  2007年   280篇
  2006年   393篇
  2005年   631篇
  2004年   336篇
  2003年   255篇
  2002年   224篇
  2001年   460篇
  2000年   354篇
  1999年   308篇
  1998年   148篇
  1997年   138篇
  1996年   108篇
  1995年   133篇
  1994年   142篇
  1993年   116篇
  1992年   240篇
  1991年   256篇
  1990年   247篇
  1989年   266篇
  1988年   238篇
  1987年   205篇
  1986年   238篇
  1985年   247篇
  1984年   233篇
  1983年   200篇
  1982年   151篇
  1981年   134篇
  1980年   132篇
  1979年   160篇
  1978年   103篇
  1977年   88篇
  1976年   68篇
  1975年   82篇
  1974年   100篇
  1973年   78篇
  1972年   70篇
  1971年   76篇
排序方式: 共有10000条查询结果,搜索用时 328 毫秒
91.
Der Wald hat für uns ?konomische, ?kologische, soziale und kulturelle Bedeutung. Leider ist in letzter Zeit die kulturelle Bedeutung im Vergleich zur ?kologischen Bedeutung ins politische Abseits geraten. Nun will man das seit 1975 geltende Bundeswaldgesetz novellieren. Dabei sollte zur besseren Berücksichtigung des Denkmalschutzes bei der Definition des Waldes klargestellt werden, dass Park-, Garten- und Friedhofsanlagen kein Wald im Sinne des Bundeswaldgesetzes sind. Die Bedeutung des Waldbodens als Archiv der Natur- und Kulturgeschichte muss betont werden. Nicht zuletzt wegen der angestrebten Eintragung der Deutschen Buchenw?lder in die Liste des Erbes der Welt muss zum Ausdruck kommen, dass Deutschland die europ?ischen und internationalen Bemühungen zum Erhalt des Kultur- und Naturerbes wie das übereinkommen zum Schutz des Kultur- und Naturerbes der Welt von 1972 unterstützt.  相似文献   
92.
93.
Abstract Lawmakers and scholars are so busy looking for new ways to develop a European private law that they are failing to see the virtues of an already existing private law harmonisation tool. This tool is the requirement of interpretation in conformity with directives as it has been designed by the Court of Justice in Marleasing and its progeny. In this paper, it is submitted that this case law operating at the level of rules on legal reasoning, and not at the level of substantive law, is a far more sophisticated means of private law harmonisation than all the measures discussed in the last years. Namely, the requirement of interpretation in conformity with directives is allowing the Common Market to develop coherently without neglecting the significance of national legal cultures. How this difficult equilibrium between harmonisation and legal pluralism might be maintained by the tool the Court of Justice developed in Marleasing is explained in this paper with the help of evolutionary jurisprudence.  相似文献   
94.
The study outlined in this article addressed a key limitation of prior research on the punishment of juveniles transferred to adult court by employing propensity score matching techniques to create more comparable samples of juvenile and young adult offenders. Using recent data from the Maryland State Commission on Criminal Sentencing Policy, it tested competing theoretical propositions about the salience of juvenile status in adult court. Findings indicate that even after rigorous statistical matching procedures, juvenile offenders are punished more severely than their young adult counterparts. We found no evidence that this “juvenile penalty” is exacerbated by an offender's race or gender, but it does vary starkly across offense type and mode of transfer, being driven primarily by drug crimes and discretionary waivers. The import of these findings is discussed as they relate to the future of juvenile justice policy regarding the continued use of juvenile transfer to adult court.  相似文献   
95.
96.
97.
Jail and prison populations in the United States have continued to grow unabated during the past two decades but crime rates have not declined. Partly in response to the pressures caused by burgeoning correctional populations, the use of alternatives to incarceration has expanded. An ongoing debate centers on the effectiveness of these alternatives. Many criminal justice professionals and some researchers question whether such alternatives seriously restrict the criminal justice system 's ability to incapacitate the active offender. This study deals specifically with two alternatives to incarceration: probation and parole. We examine offender recidivism for a sample of probationers and parolees active in New Orleans, Louisiana, and offer a new approach to addressing the effectiveness issue. Past research has evaluated the effectiveness of alternatives by examining failure rates of diverted offenders. High failure rates, we argue, do not necessarily imply a significant loss of the incapacitative effects of imprisonment. We suggest that a more appropriate measure of the loss of incapacitative effect is the proportion of all offenses committed by persons on probation or parole. Our results suggest that such losses are surprisingly low. The policy implications of our findings are discussed.  相似文献   
98.
A review of the available literature does not reveal a plausible explanation as to why the incisal edges of maxillary anterior teeth do not always mark clearly. Generally, the mandibular incisal edges do mark with some consistency. This paper demonstrates through test bites on skin that the answer lies in the position of the mandible.  相似文献   
99.
The authors are respectively parttime professor sociology at the University of Texas (San Antonio) as well as lecturer at the medical faculty of the State University Limburg (section psychiatry) and researcher at the Research and Documentation Centre of the Ministry of Justice, Schedeldoekshaven 100, 2511 EX The Hague, The Netherlands. Dorette Courtar, a mobility programme exchange student at the University of Maastricht and the Stockholm University, assisted in the basic research. We would like to thank Paulina Loennroth and the mayor of Hulst, dr. A.A.L.G.M. Kessen, both connected to the ECAD and Paul Vasseur, Urban Weber, Suzanne Schardt, all connected to the ECDP for their information and comments.  相似文献   
100.
The fingernail ridge patterns of a pair of identical twins were compared to each other, their parents, and an unrelated subject. The patterns of the twins' nails showed regions of strong similarity but were distinguishable from one another. Fewer similarities were found when comparing the nails to those of the parents and the unrelated control. The twins were shown to be monozygotic by means of DNA profiling. This therefore represents the first demonstration of unique fingernail ridge patterns in subjects shown conclusively to be identical twins. When the fingernail ridge patterns were examined with a scanning electron microscope, the backscattered electron (BEI) images were found to have superior contrast when compared to the secondary electron (SEI) images.  相似文献   
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