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   14120篇
  免费   247篇
各国政治   625篇
工人农民   1232篇
世界政治   785篇
外交国际关系   716篇
法律   7088篇
中国共产党   1篇
中国政治   51篇
政治理论   3795篇
综合类   74篇
  2023年   41篇
  2022年   26篇
  2021年   56篇
  2020年   107篇
  2019年   155篇
  2018年   1405篇
  2017年   1362篇
  2016年   1174篇
  2015年   177篇
  2014年   190篇
  2013年   1048篇
  2012年   346篇
  2011年   1065篇
  2010年   1156篇
  2009年   734篇
  2008年   877篇
  2007年   885篇
  2006年   193篇
  2005年   283篇
  2004年   390篇
  2003年   347篇
  2002年   255篇
  2001年   122篇
  2000年   122篇
  1999年   98篇
  1998年   100篇
  1997年   104篇
  1996年   109篇
  1995年   119篇
  1994年   118篇
  1993年   79篇
  1992年   87篇
  1991年   92篇
  1990年   62篇
  1989年   65篇
  1988年   66篇
  1987年   67篇
  1986年   69篇
  1985年   63篇
  1984年   61篇
  1983年   70篇
  1982年   53篇
  1981年   56篇
  1980年   38篇
  1979年   41篇
  1978年   39篇
  1977年   43篇
  1976年   32篇
  1972年   15篇
  1967年   15篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
961.
962.
This paper addresses research in the life sciences, responsible for significant national expenditures for scientific investigations funded by both the federal government and industry. Our investigation examines faculty members' involvement with industry in entrepreneurial ways that is, involved in translating their research into potentially marketable knowledge or products. First, this study examines whether there are differences in entrepreneurial behaviour between clinical and non-clinical faculty in the life sciences with industry relationships, and, second, to discover any linkage between entrepreneurship and secrecy or productivity in different ways for clinical and non-clinical faculty. The study is based on survey responses of a national sample of 4,000 clinical and non-clinical life sciences faculty in 49 U.S. research universities. The results show non-clinical faculty as more involved at the back end. The more entrepreneurial end of commercialization while clinical faculty are involved at the back end. The more entrepreneurial faculty (non-clinical) are more likely to be secretive about their research. Clinical faculty are less likely to have been denied access to research results or products. Entrepreneurial faculty are not less productive in their faculty roles. This investigation is preliminary in that it addresses one large area of academic research but excludes fields with longer historical relationships with industry.  相似文献   
963.
The societal transformation underway in Poland createda fundamental challenge to the occupational health and safety system, as the ideological and administrative principles on which it was founded vanished along with the communist-dominated regime. This paper examines the regulatory reform in Poland during the 1990s: its structural elements, implementation record and future prospects. Drawing on five case studies of privatized firms, a mailed questionnaire, and policy and institutional analysis, we find that Poland had considerable success in developing an effective regulatory system for managing occupational health hazards in privatized sector while also achieving considerable socioeconomic progress. The fundamental legitimacy of the regulators and regulatory process, the availability of information about firms and regulatory intents, and the capacity for case-specific decision making, are among the key explanatory factors. The case-specific implementation in Poland is consistent with models advocated by several authors in relation to other industrialized European economies (termed variously as negotiated compliance, tit-for-tat, cooperation-deterrence), despite a uniquely Polish context related to the continuing legacy of the communist era. The study also shows how in Poland a good fit between regulatory institutions and policies on the one hand, and their social context on the other hand, contributes to the effectiveness of the regulatory system.  相似文献   
964.
This paper re-examines some of the current theoretical models and paradigms of criminal justice in England and Wales based on an analysis of national arrest statistics between 1981 and 1997. The data show that there has been a large increase in the number of arrests in the period but the number of people prosecuted has declined. An increasing number of people are being arrested and released without any further action. The principal argument is that there has been a radical shift in power away from the formal open and public system of justice towards a more informal closed system. The paper concludes that while these trends lend support to a number of theoretical perspectives on the criminal justice process, particularly Choongh's social disciplinary model, the radical transformation which has taken place in the form of criminal justice can only be understood within the broader politics and economic structures of modern Britain.  相似文献   
965.
Confidential commercial information is an increasingly valuable commodity and commercial resource which may be inadequately protected by the traditional approach of English criminal law against misappropriation. This paper reviews the nature of the problem and some of the relevant legal issues. Notwithstanding that a global reform of the law in this area is probably not on the cards, the position advocated here is that the direct application of the criminal law is indeed an appropriate vehicle through which to deter the misappropriation of confidential commercial information. However, the scope of any new law must be carefully circumscribed - if it is drawn too wide, the law runs the danger of acting outside of the articulated rationale for criminal liability and endangering other legitimate interests (particularly in the cyberspace context). If it is drawn too narrow, any new law may very well prove ineffective. It is suggested that there are a number of difficulties, both doctrinal and practical, that must be resolved prior to enacting new legislation in this area. Some observations are presented upon the more critical issues for those interested in the implications of law reform in this area for cyberspace.  相似文献   
966.
Book reviews     
Journal of Youth and Adolescence -  相似文献   
967.
This study generated adolescent women's perception of their identity in relation to family members spanning three generations and related these perceived relationships to their sex-role orientation. Subjects were 20 firstborn university women from intact families. The methodology used multiple sources of information, including open-ended interviewing procedures, rating scales, and standard research measures of sex-role identity. Significantly more constructs empirically differentiated family by generation than by sex. Congruence of young women with both the parent and grandparent generation, relative number of masculine stereotypes produced, and personality traits of males and females were significantly influenced by the presence of a brother in the sibling generation. There was no relationship between family constellation and sex-role orientation. Feminine women were significantly more congruent with other females in their family than androgynous women. There was a linear trend for androgynous women to be increasingly individuated across the generations.Received her Ph.D. from Yale University. Research interests include observation of children and families in natural settings, longitudinal research with at-risk infants, and rural consultation.Received her Ph.D. from the University of Minnesota. Research interests include development of social competence in family, school, and community environment.Received his Ph.D. from Yale University. Research interests include the socialization of values, professional development, and studies of the family in religious and ethnic community contexts.  相似文献   
968.
i. Oman and Southeastern Arabia: A Bibliographic Survey. By Michael Owen Shannon. Boston, Mass., G.K.Hall & Co., 1978. pp.xvi, 165. $18.00.

ii. Türk Dili ve Edebiyati Ansiklopedisi: Devirler/Isimler/ Eserler/Terimler. Istanbul, Dergah Yayinlari, 1977. TL600 (for 2 vols.).

iii. Arab‐Israeli conflict: a historical, political, social and military bibliography. By Ronald M.De Vore. Oxford, Clio Press, 1976, pp.273. £10.45.

Conflict in the Middle East from October 1973 to July 1976: a selected bibliography. By Michael Rubner. Los Angeles, Center for the Study of Armament and Disarmament, California State University, 1977. pp.83. $3.00.

The Palestine Question: a select bibliography. Compiled from the holdings of the Dag Hammarskj?ld Library, United Nations. New York, United Nations, 1976. pp.63. £3.25 (Distributed in the U.K. by H.M.S.O.).

iv. Middle East Contemporary Survey: Volume I 1976–77.

Edited by Colin Legum. Tel Aviv, Shiloah Center for Middle Eastern and African Studies, University of Tel Aviv, and New York and London, Holmes and Meier, 1978. pp.xxiv, 684. £32.50.

v. The Modern Middle East: A Guide to Research Tools in the Social Sciences. By Reeva S.Simon. Boulder, Colorado, Westview Press, 1978. pp.xv, 283. £6.10.

vi. Gustav Meisels, Reference Literature to Arabic Studies, a bibliographical guide. Tel Aviv, University Publishing Projects Ltd., 1978. pp.xiv + 251.

vii. Saudi Arabia (World Bibliographical Series Vol.5).

Compiled by Frank A.Clements. Oxford and Santa Barbara, Clio Press, 1979. pp.xiv, 195. £16.75.

viii. The Records of the British Residency and Agencies in the Persian Gulf. IOR R/15. (India Office Records: Guides to Archive Groups). By Penelope Tuson. London, India Office Library and Records, 1979. pp.xix, 188. Pl.6. Index. £21.95.

ix. Modern Syria: An Introduction to the Literature. Compiled by C.H.Bleaney. Durham University, Centre for Middle Eastern and Islamic Studies (Occasional Papers Series, no.6). 1979. £4.00.

x. The Encyclopaedia of Islam. New Edition: Encyclopédie de 1'Islam. Nouvelle édition. Index to Volumes/aux [sic: read ‘des‘] Tomes I‐III. Compiled by/Établi par H.& J.D. Pearson. Edited by/Publié par E.van Donzel. Leiden, Brill/Paris, G.P.Maisonneuve & Larose S.A., 1979. pp.viii, 195. 60 guilders.  相似文献   

969.
970.
Middle-class adolescent boys and girls with strong attitudes for and against the sex-role ideology of the Women's Movement were administered a Q-sort to study two aspects believed to be related to identity formation: flexibility-rigidity and independence-dependence. A significant positive relationship was found, more strongly for independence than for flexibility and more strongly for girls than for boys. More favorable attitudes toward sex-role equalitarianism were associated with flexibility and independence. The strength of the associations varied with the nature of the Q-sort: ideal self, self as ideal member of opposite sex, and self as ideal to each parent.This article is based on the dissertation by Dr. Kirsch in partial fulfillment of the Doctor of Philosophy Degree at the Graduate School of Education, University of Marylandm, College Park, MarylandPsychotherapist in private practice in Potomac, Maryland, with special interest in psychology of women. Received her Ph.D. in human development from the University of Maryland, Graduate School of Education, in 1974.Received his Ph.D. in clinical psychology from Boston University in 1955. Diplomate in clinical psychology (ABPP). Interest is adolescent development with emphasis on innovative programs for optimal growth as well as treatment services.Received his Ed.D. in human development from the University of Maryland in 1961. Current interest is in developing preservice education programs for Middle School personnel.  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