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   10802篇
  免费   2篇
管理学   1567篇
民族学   100篇
人口学   2436篇
丛书文集   1篇
理论方法论   501篇
综合类   286篇
社会学   4494篇
统计学   1419篇
  2023年   3篇
  2021年   3篇
  2020年   7篇
  2019年   9篇
  2018年   1667篇
  2017年   1668篇
  2016年   1085篇
  2015年   43篇
  2014年   46篇
  2013年   164篇
  2012年   325篇
  2011年   1149篇
  2010年   1050篇
  2009年   795篇
  2008年   825篇
  2007年   1013篇
  2006年   11篇
  2005年   227篇
  2004年   254篇
  2003年   212篇
  2002年   87篇
  2001年   10篇
  2000年   14篇
  1999年   11篇
  1998年   6篇
  1997年   7篇
  1996年   34篇
  1995年   3篇
  1994年   3篇
  1993年   2篇
  1992年   2篇
  1990年   4篇
  1989年   4篇
  1988年   11篇
  1987年   2篇
  1985年   8篇
  1984年   5篇
  1983年   2篇
  1982年   2篇
  1981年   4篇
  1980年   3篇
  1979年   3篇
  1977年   4篇
  1976年   1篇
  1975年   1篇
  1974年   2篇
  1973年   4篇
  1972年   4篇
  1971年   1篇
  1970年   1篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
921.
Analysis reported here examined youth in residential group home placements in order to better understand how sexual behaviors, drug use, and environmental experiences differ by race and gender subgroups. Data were collected from 336 youth aged 14–21 residing in one of 41 group homes in Maryland. Chi square and logistic regression analyses were done to determine differences on study variables among the race-gender groupings. Results demonstrate not only significant health concerns overall but notable differences were also found between race-gender subgroups. Findings suggest that found race-gender subgroup differences might be informative for tailoring programming for youth of residential group home settings.  相似文献   
922.
This paper provides a review and synthesis of research literature on the effects of shift work on workers’ physical health, mental health/well-being, and family life. The focus is on current knowledge, unanswered questions, and new directions for future research. The selection of research literature is guided by a general conceptual framework that identifies predictor variables, moderating variables, and outcome variables. The paper concludes with a discussion of the variables that should be incorporated into an agenda for future research.  相似文献   
923.
924.
925.
This paper attempts to empirically investigate the link between institutional quality and economic performance in a group of 72 countries during 1980–2001, using dynamic panel data analysis. Five institutional indicators that represent the overall institutional infrastructures of an economy are employed, namely corruption, rule of law, bureaucracy, repudiation of contracts and risk of expropriation. The empirical results demonstrate that institutions’ variables are statistically significant determinants of economic performance. The findings also suggest that the effects of institutional quality vary according to the level of economic development, where institutions are more responsive in the low-income and middle-income countries. In terms of specific effect of institutional development, the results reveal that the higher level of rule of law is most potent in delivering long-run economic benefits.  相似文献   
926.
In this paper we give solution to a conjecture appearing in Christensen (1997, p. 360) in relation to the definitions of standardized residuals in loglinear models. Work done when he was visiting as the Distinguished Lukacs Professor on leave from the Complutense University of Madrid. An erratum to this article is available at .  相似文献   
927.
928.
We study the implications of two solidarity conditions on the efficient location of a public good on a cycle, when agents have single-peaked, symmetric preferences. Both conditions require that when circumstances change, the agents not responsible for the change should all be affected in the same direction: either they all gain or they all loose. The first condition, population-monotonicity, applies to arrival or departure of one agent. The second, replacement-domination, applies to changes in the preferences of one agent. Unfortunately, no Pareto-efficient solution satisfies any of these properties. However, if agents’ preferred points are restricted to the vertices of a small regular polygon inscribed in the circle, solutions exist. We characterize them as a class of efficient priority rules.  相似文献   
929.
This paper provides an analysis of the Minimal Overlap Rule, a solution for bankruptcy problems introduced by O’Neill (1982). We point out that this rule can be understood as a composition of Ibn Ezra’s proposal and the recommendation given by the Constrained Equal Loss Rule. Following an interpretation of bankruptcy problems in terms of TU games, we show that the Minimal Overlap Value is the unique solution for bankruptcy games which satisfies Anonymity and Core Transition Responsiveness.  相似文献   
930.
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