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   19443篇
  免费   351篇
  国内免费   1篇
管理学   2810篇
民族学   69篇
人才学   1篇
人口学   1890篇
丛书文集   76篇
教育普及   2篇
理论方法论   1735篇
现状及发展   1篇
综合类   262篇
社会学   9391篇
统计学   3558篇
  2021年   112篇
  2020年   281篇
  2019年   383篇
  2018年   442篇
  2017年   610篇
  2016年   478篇
  2015年   354篇
  2014年   463篇
  2013年   3008篇
  2012年   636篇
  2011年   619篇
  2010年   448篇
  2009年   373篇
  2008年   452篇
  2007年   468篇
  2006年   459篇
  2005年   445篇
  2004年   410篇
  2003年   383篇
  2002年   423篇
  2001年   524篇
  2000年   536篇
  1999年   465篇
  1998年   348篇
  1997年   310篇
  1996年   328篇
  1995年   303篇
  1994年   287篇
  1993年   291篇
  1992年   346篇
  1991年   316篇
  1990年   286篇
  1989年   291篇
  1988年   290篇
  1987年   252篇
  1986年   244篇
  1985年   278篇
  1984年   267篇
  1983年   251篇
  1982年   215篇
  1981年   181篇
  1980年   164篇
  1979年   194篇
  1978年   176篇
  1977年   161篇
  1976年   134篇
  1975年   159篇
  1974年   118篇
  1973年   117篇
  1972年   93篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
31.
Abstract This paper examines rural/urban differences and trends in mental health during the farm crisis of the 1980s in a large panel sample from a midwestern state. A community research perspective, which attributes differences to life styles, culture, and community context, is contrasted with an economic stress perspective, which focuses on individual differences in economic circumstances as determinants of rural-urban differences in mental health. Survey samples from 1981, 1986, and 1989 are used to examine differences among seven categories of community type. Multiple regression analysis of the trend and panel data provide support for both the individual economic distress and community context models.  相似文献   
32.
33.
The Contra Costa County educational program for juveniles found guilty of driving under the influence (DUI) was evaluated. Over 600 juveniles convicted of DUI from 1983 to 1988 formed the study group for this research and of these over 100 participated in the educational program. Assessment of program participants was conducted for knowledge, attitudes and behavior. Participants demonstrated increased knowledge, stronger attitudes against driving under the influence, and less risky alcohol and automobile related behaviors. County juvenile records analyzed by the logit procedure showed that class participants had a significantly lower number of repeat offenses compared to non-program participants that could not be explained by race, offense severity, age or gender.  相似文献   
34.
Recent educational reforms in England have given considerable responsibilities for the overall administration of schools to governing bodies largely comprised of lay people. The paper explores the knowledge of education possessed by lay governors. Issues considered include: the systematicity of that knowledge; its possible sources, and how gender, ethnicity and social class influence the knowledge held and used by governors. Also examined are the question of whether governors are always knowledgeable actors within the context of education and the implications of this for schools and democratic participation in their governance. Data is derived from a four year qualitative multi-site case study of ten school governing bodies in two English local education authorities undertaken by the authors between 1988 and 1992.  相似文献   
35.
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   
36.
37.
38.
39.
40.
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   
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