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   97343篇
  免费   2887篇
  国内免费   3篇
管理学   13169篇
民族学   598篇
人才学   29篇
人口学   7897篇
丛书文集   547篇
教育普及   3篇
理论方法论   9882篇
现状及发展   1篇
综合类   2283篇
社会学   46437篇
统计学   19387篇
  2023年   521篇
  2021年   593篇
  2020年   1557篇
  2019年   2283篇
  2018年   2283篇
  2017年   3375篇
  2016年   2559篇
  2015年   2097篇
  2014年   2708篇
  2013年   19134篇
  2012年   2783篇
  2011年   2607篇
  2010年   2199篇
  2009年   2331篇
  2008年   2362篇
  2007年   2152篇
  2006年   2325篇
  2005年   2504篇
  2004年   2354篇
  2003年   2061篇
  2002年   2169篇
  2001年   2221篇
  2000年   1968篇
  1999年   1862篇
  1998年   1606篇
  1997年   1457篇
  1996年   1421篇
  1995年   1431篇
  1994年   1392篇
  1993年   1369篇
  1992年   1424篇
  1991年   1352篇
  1990年   1327篇
  1989年   1141篇
  1988年   1227篇
  1987年   1097篇
  1986年   1008篇
  1985年   1182篇
  1984年   1224篇
  1983年   1098篇
  1982年   1003篇
  1981年   908篇
  1980年   857篇
  1979年   932篇
  1978年   823篇
  1977年   759篇
  1976年   694篇
  1975年   670篇
  1974年   560篇
  1973年   470篇
排序方式: 共有10000条查询结果,搜索用时 10 毫秒
11.
12.
We employ two population‐level experiments to accurately measure opposition to immigration before and after the economic crisis of 2008. Our design explicitly addresses social desirability bias, which is the tendency to give responses that are seen favorably by others and can lead to substantial underreporting of opposition to immigration. We find that overt opposition to immigration, expressed as support for a closed border, increases slightly after the crisis. However, once we account for social desirability bias, no significant increase remains. We conclude that the observed increase in anti‐immigration sentiment in the post‐crisis United States is attributable to greater expression of opposition rather than any underlying change in attitudes.  相似文献   
13.
14.
In this article, we propose a novel approach for testing the equality of two log-normal populations using a computational approach test (CAT) that does not require explicit knowledge of the sampling distribution of the test statistic. Simulation studies demonstrate that the proposed approach can perform hypothesis testing with satisfying actual size even at small sample sizes. Overall, it is superior to other existing methods. Also, a CAT is proposed for testing about reliability of two log-normal populations when the means are the same. Simulations show that the actual size of this new approach is close to nominal level and better than the score test. At the end, the proposed methods are illustrated using two examples.  相似文献   
15.
16.
17.
Feminist and empowerment theories are especially important to the understanding of individual and sociopolitical levels of social work assessment and intervention. Incorporating feminist and empowerment approaches in practice will provide social workers with the knowledge, values and skills most likely to promote human rights and social justice. In this paper, we present an overview of both theories and illustrate them with a case example.  相似文献   
18.
19.
Lifetime Data Analysis - Frailty models are generally used to model heterogeneity between the individuals. The distribution of the frailty variable is often assumed to be continuous. However, there...  相似文献   
20.
Abstract

The economic mobility of individuals and households is of fundamental interest. While many measures of economic mobility exist, reliance on transition matrices remains pervasive due to simplicity and ease of interpretation. However, estimation of transition matrices is complicated by the well-acknowledged problem of measurement error in self-reported and even administrative data. Existing methods of addressing measurement error are complex, rely on numerous strong assumptions, and often require data from more than two periods. In this article, we investigate what can be learned about economic mobility as measured via transition matrices while formally accounting for measurement error in a reasonably transparent manner. To do so, we develop a nonparametric partial identification approach to bound transition probabilities under various assumptions on the measurement error and mobility processes. This approach is applied to panel data from the United States to explore short-run mobility before and after the Great Recession.  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