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   88548篇
  免费   2936篇
  国内免费   4篇
管理学   12204篇
民族学   533篇
人才学   26篇
人口学   6696篇
丛书文集   506篇
理论方法论   9349篇
综合类   2079篇
社会学   41280篇
统计学   18815篇
  2023年   511篇
  2021年   568篇
  2020年   1508篇
  2019年   2201篇
  2018年   2052篇
  2017年   3108篇
  2016年   2351篇
  2015年   2041篇
  2014年   2630篇
  2013年   18850篇
  2012年   2257篇
  2011年   2070篇
  2010年   1904篇
  2009年   2156篇
  2008年   1989篇
  2007年   1790篇
  2006年   2049篇
  2005年   2221篇
  2004年   2123篇
  2003年   1844篇
  2002年   1950篇
  2001年   1962篇
  2000年   1737篇
  1999年   1654篇
  1998年   1482篇
  1997年   1331篇
  1996年   1285篇
  1995年   1306篇
  1994年   1280篇
  1993年   1256篇
  1992年   1242篇
  1991年   1183篇
  1990年   1146篇
  1989年   1000篇
  1988年   1080篇
  1987年   959篇
  1986年   858篇
  1985年   1030篇
  1984年   1102篇
  1983年   968篇
  1982年   914篇
  1981年   835篇
  1980年   796篇
  1979年   839篇
  1978年   748篇
  1977年   676篇
  1976年   635篇
  1975年   614篇
  1974年   502篇
  1973年   420篇
排序方式: 共有10000条查询结果,搜索用时 15 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