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   13622篇
  免费   120篇
  国内免费   42篇
管理学   1603篇
劳动科学   7篇
民族学   143篇
人才学   2篇
人口学   2443篇
丛书文集   470篇
理论方法论   624篇
综合类   2681篇
社会学   4526篇
统计学   1285篇
  2024年   2篇
  2023年   4篇
  2022年   30篇
  2021年   38篇
  2020年   31篇
  2019年   24篇
  2018年   1697篇
  2017年   1699篇
  2016年   1121篇
  2015年   109篇
  2014年   156篇
  2013年   186篇
  2012年   486篇
  2011年   1395篇
  2010年   1261篇
  2009年   1009篇
  2008年   1086篇
  2007年   1297篇
  2006年   270篇
  2005年   443篇
  2004年   419篇
  2003年   357篇
  2002年   257篇
  2001年   161篇
  2000年   94篇
  1999年   34篇
  1998年   17篇
  1997年   11篇
  1996年   38篇
  1995年   10篇
  1994年   1篇
  1993年   7篇
  1992年   6篇
  1991年   5篇
  1990年   5篇
  1989年   1篇
  1988年   11篇
  1987年   2篇
  1985年   2篇
  1982年   2篇
排序方式: 共有10000条查询结果,搜索用时 781 毫秒
21.
Empirical applications of poverty measurement often have to deal with a stochastic weighting variable such as household size. Within the framework of a bivariate distribution function defined over income and weight, I derive the limiting distributions of the decomposable poverty measures and of the ordinates of stochastic dominance curves. The poverty line is allowed to depend on the income distribution. It is shown how the results can be used to test hypotheses concerning changes in poverty. The inference procedures are briefly illustrated using Belgian data. An erratum to this article can be found at  相似文献   
22.
Singh et al. ([13]) pointed out that the Randomized response (RR) technique proposed by Moors ([9]) is not desirable because it fails to protect the confidentiality of the respondents and they provided two alternative strategies free from the above drawback but limited to SRSWOR sampling only. In this paper, generalization of one of the strategies is provided for complex survey designs, wider class of estimators and for quantitative characteristics. Relative efficiency of the modified strategy is tested through empirical investigations. An erratum to this article is available at .  相似文献   
23.
侵权纠纷是民事诉讼机制解决的主要对象。随着社会的发展,侵权案件逐渐增多,过量的侵权诉讼会带来很多不良后果,不仅是对法律制度本身的损害,更对经济发展产生严重的负面影响。要解决侵权诉讼的膨胀问题,必须找到控制侵权诉讼的正确途径。  相似文献   
24.
25.
26.
高校普通话水平测试(PSC)工作的科学化管理能够保证测试质量、完成高水平测试工作,同时可以营造良好的学校语言文字氛围和推广及普及普通话。针对目前高校在PSC管理方面存在的问题,本文提出了制定健全的管理制度、实现普通话测试管理的科学化与信息化、积极探索现代化的普通话测试手段、加强对普通话测试员队伍的综合管理以及普通话测试的检查督导工作等措施。通过这几方面的措施确保PSC工作走向制度化、规范化、科学化。  相似文献   
27.
It is known that the Henderson Method III (Biometrics 9:226–252, 1953) is of special interest for the mixed linear models because the estimators of the variance components are unaffected by the parameters of the fixed factor (or factors). This article deals with generalizations and minor extensions of the results obtained for the univariate linear models. A MANOVA mixed model is presented in a convenient form and the covariance components estimators are given on finite dimensional linear spaces. The results use both the usual parametric representations and the coordinate-free approach of Kruskal (Ann Math Statist 39:70–75, 1968) and Eaton (Ann Math Statist 41:528–538, 1970). The normal equations are generalized and it is given a necessary and sufficient condition for the existence of quadratic unbiased estimators for covariance components in the considered model.  相似文献   
28.
赛缪尔·普芬道夫是17世纪德国法哲学的开创者,是近代世界范围内最杰出的自然法学思想家.普芬道夫对法学的贡献主要表现在他对自然法的捍卫上,作为古典自然法学派在德国的主要代表,其著作中处处充满着自然法思想,尤其是契约论思想更是影响深远.在自然法学说方面,普芬道夫的思想联结着格老秀斯和霍布斯.与其他古典自然法思想家不同,他特别重视对义务的研究.  相似文献   
29.
Abstract.  In this paper, we propose a random varying-coefficient model for longitudinal data. This model is different from the standard varying-coefficient model in the sense that the time-varying coefficients are assumed to be subject-specific, and can be considered as realizations of stochastic processes. This modelling strategy allows us to employ powerful mixed-effects modelling techniques to efficiently incorporate the within-subject and between-subject variations in the estimators of time-varying coefficients. Thus, the subject-specific feature of longitudinal data is effectively considered in the proposed model. A backfitting algorithm is proposed to estimate the coefficient functions. Simulation studies show that the proposed estimation methods are more efficient in finite-sample performance compared with the standard local least squares method. An application to an AIDS clinical study is presented to illustrate the proposed methodologies.  相似文献   
30.
Many organizational change projects fail — despite a well thought out concept, professional project management and a binding implementation timetable. The reason why the expected success doesn’t materialize often lies with the missing maintenance. Once the project is officially completed and the client and project manager withdraw, the manner in which the organization will take up these changes is seldom systematically dealt with. Difficulties often arise when no discrete stabilizing measures are planned. We have derived four central action areas which will be clarified by way of practical examples. It will also be shown what is important to pay attention to in the stabilization phase so that a lasting success of the organizational change project can be ensured.  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