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   1889篇
  免费   39篇
各国政治   150篇
工人农民   58篇
世界政治   155篇
外交国际关系   98篇
法律   1108篇
中国政治   19篇
政治理论   337篇
综合类   3篇
  2023年   11篇
  2022年   5篇
  2021年   8篇
  2020年   17篇
  2019年   26篇
  2018年   36篇
  2017年   34篇
  2016年   43篇
  2015年   71篇
  2014年   66篇
  2013年   386篇
  2012年   85篇
  2011年   73篇
  2010年   97篇
  2009年   92篇
  2008年   77篇
  2007年   87篇
  2006年   85篇
  2005年   95篇
  2004年   59篇
  2003年   27篇
  2002年   49篇
  2001年   92篇
  2000年   22篇
  1999年   12篇
  1998年   17篇
  1997年   10篇
  1996年   14篇
  1995年   11篇
  1994年   12篇
  1993年   6篇
  1992年   13篇
  1991年   15篇
  1990年   9篇
  1989年   18篇
  1988年   9篇
  1987年   12篇
  1986年   13篇
  1985年   13篇
  1984年   13篇
  1983年   8篇
  1982年   14篇
  1981年   10篇
  1980年   11篇
  1979年   9篇
  1978年   9篇
  1977年   7篇
  1975年   8篇
  1967年   3篇
  1943年   2篇
排序方式: 共有1928条查询结果,搜索用时 15 毫秒
21.
22.
Die Kultivierung gentechnisch ver?nderter Pflanzen in der Landwirtschaft hat in einigen Staaten wie den USA, Brasilien, Argentinien, Kanada und China bereits erhebliche Ausma?e angenommen. In Europa und zumal in Deutschland befindet sich die „grüne Gentechnik“ dagegen noch in den Kinderschuhen. Nach der Aufhebung des faktischen Moratoriums gegen den Anbau gentechnisch ver?nderter Kulturpflanzen durch die EU im Jahre 2005 ist mit einem langsamen Vordringen der Gentechnik in der Landwirtschaft auch in Europa zu rechnen. Gentechnisch ver?nderte Organismen (GVO) sind lebende Organismen, die sich in der Umwelt vermehren und ausbreiten k?nnen. Die Umwelt stellt ein im Wesentlichen offenes System dar, das nicht hermetisch aufgeteilt und abgeschlossen werden kann. Wo immer GVO in der Umwelt freigesetzt werden, kann daher eine Ausbreitung in der Umwelt nicht grunds?tzlich ausgeschlossen werden. Inwieweit dies eine grunds?tzlich akzeptable Ver?nderung der Umwelt darstellt, die mit den Auswirkungen anderer menschlicher Einwirkungen oder gar natürlichen Ver?nderungen vergleichbar ist, oder es sich um ein ernstes ?kologisches Risiko handelt, ist freilich umstritten. Sowohl der EG-Richtlinie 2001/18/EG über die Freisetzung und das Inverkehrbringen genetisch ver?nderter Produkte als auch dem deutschen Gentechnikgesetz liegt die Wertung zugrunde, dass dies nur im Einzelfall beurteilt werden kann. Soweit der Anbau von GVO-Kulturpflanzen zugelassen wird, geht es darum, etwaige ?kologische und ?konomische Risiken gering zu halten. Neben administrativer Regulierung spielt hier das Haftungsrecht eine zentrale Rolle.  相似文献   
23.
Seit längerem ist in Rechtsprechung und Literatur umstritten, 1 ob und in welchem Umfang ein Insolvenzverwalter wegen Gefahren, die von Massegegenständen ausgehen, ordnungsrechtlich haftet. In zwei aktuellen Urteilen hat das BVerwG eine Zustandsverantwortlichkeit des Insolvenzverwalters grundsätzlich anerkannt. Insbesondere durch Freigabe von Massegegenständen kann sich der Insolvenzverwalter aber von der ordnungsrechtlichen Haftung befreien. 1) Vgl. zu dem Streit zwischen Insolvenz- und Verwaltungsrechtlern, Verwaltungs- und Zivilgerichten: Uhlenbruck KTS 2004, 275ff.; Kothe ZfIR 2004, 1ff.; Häsemeyer in: FS Uhlenbruck, 2000, S. 97ff.; Franz NuR 2000, 496ff.  相似文献   
24.
25.
Earlier research on the relation between school features and petty crime suggests that schools can intentionally influence the crime rate of the pupils. These findings were the starting point for a Dutch study at secondary schools of the same type in Dutch towns. The study focused on effects on the delinquency of third-year low-stream pupils (aged 15–17). For the study a control theory was formulated, a conditional control theory, which, in contrast to Hirschi's social control theory, recognizes possible delinquent influences of the pupils' network. In the study a strong statistical relation between integration of pupils in school and petty crime was found. However, I found almost no influence of the studied school features on integration and petty crime. These results led to the question whether the real important feature of schools had been neglected in the study. This seems not to be the case. A multilevel analysis shows that it is unlikely that there is major impact of schools on the integration of pupils, on delinquency, or on the relationship between integration and delinquency. This can be the result of special aspects of the Dutch school system and of the neglect of theory in earlier research.  相似文献   
26.
Book reviews     
Transborder Data Flows (Proceedings of an OECD Conference) Edited by Hans‐Peter Gassmann North Holland (Elsevier Science Publishers) 1985, US$74.00

Plastic and Electronic Money: New Payment Systems and Their Implications Patrick Frazer Woodhead Faulkner Limited 1985 £35

A User's Guide To Computer Contracting: Forms, Techniques and Strategies Davis, Allen, Bowman and Armstrong Harcourt Brace Jovanovich 1985, $75

Legal Protection of Computer Programs and Data C. Millard Sweet & Maxwell/Stevens 1985, £24

Piracy of Phonograms Gillian Davies ESC Publishing Ltd. 1986. 2nd edition. £17.95.

Biotechnology and Patent Protection—An International Review F. K. Beier, R. S. Crespi and J. Straus O.E.C.D. 1985, £5

Protecting Privacy in Two‐Way Electronic Services David H. Flaherty Mansell Publishing Company 1985, £23.50

High‐Tech Espionage Jay Tuck Sidgwick and Jackson Ltd 1980, £10.95  相似文献   

27.
Defining risk   总被引:6,自引:0,他引:6  
Risk is the focal topic in the management of many activities and technologies. For that management to be successful, an explicit and accepted definition of the term risk is essential. Creation of that definition is a political act, expressing the definers' values regarding the relative importance of different possible adverse consequences for a particular decision. Those values, and with them the definition of risk, can change with changes in the decisionmaker, the technologies considered, or the decision problem. After a review of the sources of controversy in defining risk, a general framework is developed, showing how these value issues can be systematically addressed. As an example, the approach is applied to characterizing the risks of six competing energy technologies, the relative riskeness of which depends upon the particular definition used.  相似文献   
28.
An increase in birth rates to Minneapolis minors following the enactment of a parental notification law was examined. A well-publicized link between increasing birth rates and the law is shown to have been premature. Birth, abortion, and population data by age, race, and region suggest that the increasing birth rate in Minneapolis was not related to parental notification, but rather to a growing racial minority population.Preparation of this article was supported in part by an Aldeen Grant from Wheaton College. The authors wish to thank the Minnesota Center for Health Statistics, particularly James Wigginton and Carol Vargas, for their considerable work to provide birth, abortion, and population data in a form suitable for the current analysis. The authors also thank Americans United for Life for purchasing the data and providing them to the authors.  相似文献   
29.
Reviews     
Barbara Caine and Rosemary Pringle (eds), Transitions: New Australian Feminisms (Allen & Unwin) 1995.

Peta Tait, Converging Realities: Feminism in Australian Theatre (Currency Press) Sydney, 1994.

Pauline Johnson, Feminism as Radical Humanism (Allen & Unwin) St Leonards, 1994.

Denise Russell, Women, Madness and Medicine (Polity Press) Cambridge, 1995.

R.W‐ Connell, Masculinities (Allen & Unwin) St Leonards, 1995.

Margaret Maynard, Fashioned from Penury: Dress as Cultural Practice in Colonial Australia (Cambridge University Press) Melbourne, 1994.

Joy Damousi, Women Come Rally: Socialism, Communism and Gender in Australia, 1890–1955 (Oxford University Press) Melbourne, 1995.

Susan Sheridan, Along the Faultlines: Sex, Race and Nation in Australian Women's Writing, 1880s1930s (Allen & Unwin) Sydney, 1995.  相似文献   

30.
Husbands' and wives' reports (n=97 couples) of engaging in or experiencing marital aggression were compared to determine congruence. Congruence was defined as spousal agreement on whether either spouse had been nonviolent, mildly violent, or severely maritally violent within the past year. Whereas approximately equal numbers of clinic couples were incongruent for husband and for wife violence (32% vs. 31%), only incongruence for husband violence (H W) was found to correlate with reports of affective and relationship functioning. Incongruent H W wives were more likely to be depressed and angry. H W incongruent wives were also more negative about the inter-spousal communication and rated the relationship as more unsatisfactory for them than did congruent wives. Incongruent H W husbands also perceived the relationship more negatively, but their levels of depression and anger did not differ from congruent H W husbands. These findings were not replicated for spouses who were incongruent for wife violence. Our results support the conclusion that spousal disagreement about H W violence has a more negative impact than does disagreement about wives' level of aggression.  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