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   375篇
  免费   28篇
各国政治   27篇
工人农民   81篇
世界政治   33篇
外交国际关系   15篇
法律   156篇
中国政治   7篇
政治理论   79篇
综合类   5篇
  2024年   1篇
  2023年   4篇
  2021年   6篇
  2020年   8篇
  2019年   18篇
  2018年   24篇
  2017年   28篇
  2016年   28篇
  2015年   22篇
  2014年   12篇
  2013年   64篇
  2012年   16篇
  2011年   16篇
  2010年   12篇
  2009年   7篇
  2008年   7篇
  2007年   15篇
  2006年   14篇
  2005年   6篇
  2004年   10篇
  2003年   8篇
  2002年   3篇
  2001年   8篇
  2000年   5篇
  1999年   5篇
  1998年   1篇
  1997年   5篇
  1996年   6篇
  1995年   5篇
  1994年   3篇
  1993年   5篇
  1991年   2篇
  1990年   5篇
  1989年   1篇
  1988年   1篇
  1987年   3篇
  1986年   3篇
  1985年   2篇
  1984年   2篇
  1983年   3篇
  1982年   1篇
  1981年   1篇
  1978年   3篇
  1976年   1篇
  1974年   2篇
  1973年   1篇
排序方式: 共有403条查询结果,搜索用时 15 毫秒
21.
Privilege, by Yvonne Rainer, 1991.1

Bitch! Dyke! Faghag! Whore! Parti. (The Sex Show). Createdand performed by Penny Arcade. Presented by Theater for the New City, New York, October 13, 1990.

Daytrips. The Women's Project. Voyage to Lesbos. WOW Cafe. Hamlet. Barnard College. November, 1990.

Excerpts from the Attorney General's Report on Pornography ‐A Hard Place Theatre production. The Playground Theatre, New York City, January 10–20, 1990.

We Keep Our Victims Ready. Written, performed, and directed by Karen Finley. The Joyce Theater, New York City. September 18–22, 1990.

“Find Out Who Killed Laura Palmer” Episode of TwinPeaks, television series, directed by David Lynch. ABC.

World Without End. By Holly Hughes. P.S. 122, New York City, October, 1990.  相似文献   
22.
23.
24.
Elements of this article first appeared in a paper given at the Hart Conference on Property, 1993.  相似文献   
25.
The present study tested whether theoretically derived risk factors predicted increases in body dissatisfaction and whether gender moderated these relations with data from a longitudinal study of 428 adolescent girls and boys because few prospective studies have examined these aims, despite evidence that body dissatisfaction increases risk for various psychiatric disturbances. Body dissatisfaction showed significant increases for girls and significant decreases for boys during early adolescence. For both genders, parental support deficits, negative affectivity, and self-reported dietary restraint showed significant relations to future increases in body dissatisfaction. Ideal body internalization and body mass index did not demonstrate significant relations to future increases in body dissatisfaction; peer support deficits showed a marginal relation to this outcome. Gender did not moderate these relations, despite adequate power to detect interactive effects.
Sarah Kate BearmanEmail:
  相似文献   
26.
27.
28.
This paper examines research on the diffusion of innovation, the final stage in the process of technological change. The focus rests primarily on two traditions in diffusion research: that of economists and that of sociologists. Diffusion researchers in these and related disciplines have made significant contributions to the understanding of the dynamics of processes of change; yet the state of the art in diffusion research is not equal to the sum of its parts. This is due in large measure to disciplinary parochialism: scholars have concentrated on those innovations, diffusion environments, explanatory variables, and analytical methodologies which are most compatible with their particular disciplines, despite the fact that diffusion is not a discipline-specific phenomenon. Deficiencies in current understanding of diffusion are examined in the context of this and other significant problems. The paper concludes by considering the policy relevance of diffusion research and suggesting issues with which future research might productively be concerned.The following individuals have been most helpful in stimulating and directing my interest in this subject and in criticizing this paper: Richard R. Nelson of Yale University and the following members of the Faculty Seminar on Innovation and Social Change, Institute of Public Policy Studies, University of Michigan: Michael Moch, Lawrence Mohr, Everett Rogers, Herbert Schuette, Jack Walker, and Sidney Winter.  相似文献   
29.
Efficient capillary electrophoretic STR analysis requires rapid, reproducible and robust separation of DNA fragments with reasonable capillary longevity--this is currently accomplished using proprietary commercial polymeric sieving matrices specifically developed for this separation. These matrices, while effective, are costly and do not provide adequate resolution of STR DNA fragments in capillaries with shorter effective separation lengths, increasing the time required to accomplish the separation and minimizing the potential extrapolation to other miniaturized platforms. As the forensic community looks toward next generation microchip technology as a means of processing casework more rapidly, new sieving polymers need to be evaluated for utilization in this platform. The research presented here describes the assessment of commercially-available polymeric sieving matrices for STR analysis, with consideration given to feasibility of incorporation into a microdevice. Polymer composition, molecular weight, and concentration were evaluated, along with an assessment of the effects of buffer composition, separation temperature, and capillary length. These variables were evaluated individually or collectively on the ability to resolve STR DNA fragments and the reproducibility of the separations and the results compared to a proprietary commercial product. A 600,000 Da MW poly(ethylene oxide) (PEO) solution at a 3% (w/v) concentration was determined to be the most suitable matrix for these separations. This polymer, in coated capillaries, provided highly robust and reproducible separations, with near baseline resolution of fragments having single base differences. Reductions in the temperature of the separation, from 60 degrees C to 40 degrees C, and the urea concentration of the buffer, from 7 M to 3.5 M, provided increased longevity of the PEO polymer for repeated separations. Comparison of this polymer with currently specified commercial products used for STR analysis showed that the optimized PEO matrix provided superior separations under all conditions tested. In addition, PEO could be utilized in shorter capillary systems, with a concurrent decrease in analysis time, highlighting its potential for use in shortened capillary or microdevice systems.  相似文献   
30.
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