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   22884篇
  免费   393篇
  国内免费   1篇
管理学   3285篇
民族学   105篇
人才学   2篇
人口学   2218篇
丛书文集   104篇
教育普及   2篇
理论方法论   2023篇
现状及发展   1篇
综合类   297篇
社会学   11116篇
统计学   4125篇
  2021年   132篇
  2020年   325篇
  2019年   449篇
  2018年   538篇
  2017年   723篇
  2016年   583篇
  2015年   413篇
  2014年   543篇
  2013年   3682篇
  2012年   717篇
  2011年   724篇
  2010年   533篇
  2009年   444篇
  2008年   530篇
  2007年   572篇
  2006年   526篇
  2005年   517篇
  2004年   479篇
  2003年   445篇
  2002年   488篇
  2001年   592篇
  2000年   587篇
  1999年   519篇
  1998年   397篇
  1997年   369篇
  1996年   368篇
  1995年   356篇
  1994年   332篇
  1993年   344篇
  1992年   400篇
  1991年   375篇
  1990年   329篇
  1989年   327篇
  1988年   331篇
  1987年   299篇
  1986年   282篇
  1985年   316篇
  1984年   302篇
  1983年   296篇
  1982年   254篇
  1981年   219篇
  1980年   198篇
  1979年   229篇
  1978年   223篇
  1977年   184篇
  1976年   166篇
  1975年   187篇
  1974年   146篇
  1973年   132篇
  1971年   108篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
51.
This article builds on theoretical work in the social movements literature that uses "master frames" (Snow and Benford 1992) to account for the cyclical clustering of social movement activity within certain historical periods. I identify "master frame alignment" as the dynamic process by which social movement actors rhetorically transform the master frames within a cycle of protest to make them resonate more clearly with a movement's unique social and historical situation. Just as frame alignment processes serve to link a movement organization's activities, goals, and ideology with those of a potential group of adherents, master frame alignment processes link the activities, goals, and ideology of a movement organization with those espoused within the broader symbolic atmosphere of the social movement. I present historical data from Irish newspapers and political documents to show how the Irish Sinn Féin movement, seeking self-determination during the early twentieth century, rhetorically reconstructed the master frames generated by the League of Nations in order to better exploit this particular window of political opportunity.  相似文献   
52.
Mills at Maryland   总被引:1,自引:1,他引:0  
  相似文献   
53.
54.
55.
We employ vector autoregressive techniques to determine the current state of the labor queue. Unemployment rate differentials have narrowed in recent years, potentially due to a change in the queue ordering, though a tight labor market and a stable queue would yield similar results. We find no evidence that the queue ordering has changed, which brings into question the resiliency of gains made by minority groups. We employ the same techniques to reveal the state of the queue across geographic regions and find that substantial differences exist across regions, implying variation in the relative labor force status of demographic groups.  相似文献   
56.
57.
58.
59.
Banks winners in tournaments are difficult to recognize   总被引:1,自引:0,他引:1  
Given a tournament T, a Banks winner of T is the top vertex of any maximal (with respect to inclusion) transitive subtournament of T. In this technical note, we show that the problem of deciding whether some fixed vertex v is a Banks winner for T is NP-complete. Received: 22 February 2002/Accepted: 20 June 2002 Supported by the START program Y43-MAT of the Austrian Ministry of Science. I would like to thank two thank the referees for a careful reading of the paper, for helpful remarks, and for many suggestions how to improve the presentation.  相似文献   
60.
Using an experimental design, this research examines the effect of the nation's first family cap on the births, abortions, and contraception use of over 8,000 women receiving public assistance in New Jersey. The family cap denies additional cash benefits to children conceived while the mother is receiving public assistance. Our research shows that a targeted welfare benefit manipulation does influence fertility behavior; however, the effect is conditioned by race. We find that Black women in the experimental group have a 21% lower birth rate and a 32% higher abortion rate than Black women in the control group. We do not find a birth effect for Hispanic or White women. We discuss the policy implications of the effects of a segmented family cap.  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