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   89436篇
  免费   2964篇
  国内免费   4篇
管理学   12296篇
民族学   535篇
人才学   28篇
人口学   6804篇
丛书文集   516篇
理论方法论   9395篇
综合类   2120篇
社会学   41853篇
统计学   18857篇
  2023年   510篇
  2021年   569篇
  2020年   1522篇
  2019年   2225篇
  2018年   2065篇
  2017年   3164篇
  2016年   2370篇
  2015年   2065篇
  2014年   2649篇
  2013年   18955篇
  2012年   2314篇
  2011年   2089篇
  2010年   1951篇
  2009年   2184篇
  2008年   2046篇
  2007年   1842篇
  2006年   2087篇
  2005年   2242篇
  2004年   2140篇
  2003年   1864篇
  2002年   1965篇
  2001年   1930篇
  2000年   1724篇
  1999年   1643篇
  1998年   1474篇
  1997年   1334篇
  1996年   1283篇
  1995年   1303篇
  1994年   1277篇
  1993年   1271篇
  1992年   1238篇
  1991年   1177篇
  1990年   1154篇
  1989年   1009篇
  1988年   1101篇
  1987年   969篇
  1986年   866篇
  1985年   1033篇
  1984年   1111篇
  1983年   984篇
  1982年   925篇
  1981年   842篇
  1980年   812篇
  1979年   853篇
  1978年   766篇
  1977年   695篇
  1976年   659篇
  1975年   631篇
  1974年   507篇
  1973年   430篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
1.
Clinical Social Work Journal - System enactments are co-created phenomena characterized by confounding and emotionally charged multi-person interactions that emerge through the convergence of...  相似文献   
2.
3.

Motivated by a breast cancer research program, this paper is concerned with the joint survivor function of multiple event times when their observations are subject to informative censoring caused by a terminating event. We formulate the correlation of the multiple event times together with the time to the terminating event by an Archimedean copula to account for the informative censoring. Adapting the widely used two-stage procedure under a copula model, we propose an easy-to-implement pseudo-likelihood based procedure for estimating the model parameters. The approach yields a new estimator for the marginal distribution of a single event time with semicompeting-risks data. We conduct both asymptotics and simulation studies to examine the proposed approach in consistency, efficiency, and robustness. Data from the breast cancer program are employed to illustrate this research.

  相似文献   
4.
5.
6.
7.
This article highlights three dimensions to understanding children's well‐being during and after parental imprisonment which have not been fully explored in current research. A consideration of ‘time’ reveals the importance of children's past experiences and their anticipated futures. A focus on ‘space’ highlights the impact of new or altered environmental dynamics. A study of ‘agency’ illuminates how children cope within structural, material and social confines which intensify vulnerability and dependency. This integrated perspective reveals important differences in individual children's experiences and commonalities in broader systemic and social constraints on prisoners’ children. The paper analyses data from a prospective longitudinal study of 35 prisoners’ children during and after their (step) father's imprisonment to illustrate the arguments.  相似文献   
8.
9.
10.
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   
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