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   9834篇
  免费   304篇
  国内免费   1篇
管理学   1329篇
民族学   56篇
人口学   869篇
丛书文集   38篇
理论方法论   940篇
综合类   82篇
社会学   4589篇
统计学   2236篇
  2023年   59篇
  2022年   30篇
  2021年   67篇
  2020年   150篇
  2019年   244篇
  2018年   269篇
  2017年   400篇
  2016年   281篇
  2015年   191篇
  2014年   274篇
  2013年   1856篇
  2012年   325篇
  2011年   327篇
  2010年   233篇
  2009年   239篇
  2008年   273篇
  2007年   247篇
  2006年   262篇
  2005年   236篇
  2004年   217篇
  2003年   193篇
  2002年   231篇
  2001年   248篇
  2000年   239篇
  1999年   226篇
  1998年   170篇
  1997年   158篇
  1996年   142篇
  1995年   117篇
  1994年   166篇
  1993年   122篇
  1992年   147篇
  1991年   160篇
  1990年   139篇
  1989年   119篇
  1988年   107篇
  1987年   100篇
  1986年   102篇
  1985年   115篇
  1984年   111篇
  1983年   83篇
  1982年   86篇
  1981年   57篇
  1980年   75篇
  1979年   75篇
  1978年   56篇
  1977年   59篇
  1976年   50篇
  1975年   50篇
  1974年   47篇
排序方式: 共有10000条查询结果,搜索用时 437 毫秒
1.
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   
2.
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   
3.
4.
5.
6.
The simple logistic regression model with normal measurement error and normal regressor is shown to be identifiable without any extra information about the measurement error. The multiple logistic regression model with more than one regressor variable measured with error is not identifiable. If the covariance matrix of the measurement error is known up to a scalar factor, the model is identified. Further we discuss why in spite of the identifiability the models cannot be estimated in a reasonable way without extra information about the measurement error.  相似文献   
7.
Food assumes enormous importance in prison: for many prisoners it conditions their life in custody and, in many respects, is symbolic of the prison experience. This article explores the complex relationship between gender, food and imprisonment through an analysis of data obtained from in‐depth interviews and group discussions conducted in three women's prisons in England. The findings indicate that, in prison, where control is taken away as the prisoner and her body become the objects of external forces, food is experienced not only as part of the disciplinary machinery, but also as a powerful source of pleasure, resistance and rebellion. The implications of such findings for health promotion in the prison context are discussed. Here, the pleasures and consolations of food may well constitute a redefinition of what it is to be healthy in this context, one that challenges the dominant meaning constructed in current health promotional discourse.  相似文献   
8.
In a longitudinal, community-based study, adolescent protective factors for those at risk for depression were identified that were associated with resilient outcomes in young adulthood. For those with childhood risk factors for major depression, significant protective factors included family cohesion, positive self appraisals, and good interpersonal relations. Findings may help inform the development of prevention and treatment programs for adolescents vulnerable to depression. Implications for future research and clinical practice are discussed.  相似文献   
9.
As a very small state, Luxembourg would not appear to qualify as an influential foreign policy actor either in Europe or the world. Yet the country's international influence has long belied its reputation as a small state. This article reviews the literature on small-state foreign policy and finds that it offers numerous contradictory conclusions. As a case study it then addresses Luxembourg in the 1990s, with particular attention to two themes: its active participation in the European Union (EU) and its policies directed at maintaining economic prosperity. The paper goes on to explain Luxembourgish foreign policy behaviour through three levels of analysis and assesses to what extent smallness is a benefit or a hindrance to Luxembourg's success in meeting its international goals.  相似文献   
10.
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