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   14017篇
  免费   237篇
各国政治   624篇
工人农民   1229篇
世界政治   779篇
外交国际关系   711篇
法律   7021篇
中国政治   50篇
政治理论   3769篇
综合类   71篇
  2023年   41篇
  2022年   26篇
  2021年   54篇
  2020年   103篇
  2019年   149篇
  2018年   1400篇
  2017年   1361篇
  2016年   1172篇
  2015年   171篇
  2014年   184篇
  2013年   1036篇
  2012年   341篇
  2011年   1063篇
  2010年   1152篇
  2009年   731篇
  2008年   872篇
  2007年   881篇
  2006年   191篇
  2005年   281篇
  2004年   389篇
  2003年   345篇
  2002年   248篇
  2001年   121篇
  2000年   119篇
  1999年   97篇
  1998年   99篇
  1997年   103篇
  1996年   108篇
  1995年   119篇
  1994年   115篇
  1993年   79篇
  1992年   84篇
  1991年   91篇
  1990年   62篇
  1989年   65篇
  1988年   64篇
  1987年   63篇
  1986年   67篇
  1985年   62篇
  1984年   61篇
  1983年   70篇
  1982年   53篇
  1981年   55篇
  1980年   38篇
  1979年   41篇
  1978年   39篇
  1977年   42篇
  1976年   30篇
  1974年   15篇
  1967年   14篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
961.
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   
962.
This study investigated the self-concepts, school achievement, occupational aspirations, vocational maturity, and perceptions of parents of children from two-parent and single-parent homes. The sample contained 559 children, 19% from single-parent homes. A multivariateF indicated children from two-parent homes had significantly higher school grades and occupational aspirations. There were also significant differences in children's perceptions of relationships with fathers, but not with mothers. It was argued that family structure has an impact on adolescents' perceptions and behaviors.Received his Ph.D. from the State University of New York at Buffalo. Current research interests include the impact of family structure on the family and related issues.Received his Ph.D. from the Ohio State University. Current research interests include family research.  相似文献   
963.
964.
International Journal for the Semiotics of Law - Revue internationale de Sémiotique juridique -  相似文献   
965.
966.
967.
Callahan  Bridget  Miles  Edward  Fluharty  David 《Policy Sciences》1999,32(3):269-293
The Columbia River Basin management system suffers from conflicts over water use and allocation, and vulnerability to climate variability that disrupt hydropower, fisheries, irrigation, water supply, and other vital activities. Climate forecasts have the potential to improve water resource management in this system supporting management decisions that decrease its vulnerability to droughts, floods, and other crises related to climate variability. This study shows that despite the potential utility, managers do not use climate forecasts except for background information. The barriers to managers' use of climate forecasts include low forecast skill, lack of interpretation and demonstrated applications, low geographic resolution, inadequate links to climate variability related impacts, and institutional aversion to incorporating new tools into decision making. To realize the potential of climate forecasts for water resources management, we recommend strategies that include technical improvements to the forecast products, and joint efforts between forecast producers and the management community to develop and demonstrate climate forecast applications through reciprocal and iterative education.  相似文献   
968.
969.
970.
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