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   18144篇
  免费   346篇
  国内免费   102篇
管理学   1927篇
劳动科学   10篇
民族学   241篇
人才学   1篇
人口学   2553篇
丛书文集   1492篇
理论方法论   885篇
综合类   5064篇
社会学   4744篇
统计学   1675篇
  2024年   14篇
  2023年   47篇
  2022年   145篇
  2021年   168篇
  2020年   150篇
  2019年   111篇
  2018年   1758篇
  2017年   1817篇
  2016年   1222篇
  2015年   288篇
  2014年   363篇
  2013年   475篇
  2012年   677篇
  2011年   1665篇
  2010年   1580篇
  2009年   1325篇
  2008年   1329篇
  2007年   1541篇
  2006年   532篇
  2005年   687篇
  2004年   546篇
  2003年   551篇
  2002年   497篇
  2001年   352篇
  2000年   218篇
  1999年   105篇
  1998年   66篇
  1997年   52篇
  1996年   82篇
  1995年   54篇
  1994年   34篇
  1993年   34篇
  1992年   22篇
  1991年   25篇
  1990年   14篇
  1989年   10篇
  1988年   17篇
  1987年   1篇
  1986年   4篇
  1985年   5篇
  1984年   2篇
  1983年   1篇
  1982年   1篇
  1981年   1篇
  1979年   1篇
  1977年   1篇
  1974年   1篇
  1967年   1篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
41.
42.
论述了坚持党的阶级基础和扩大党的群众基础是马克思主义建党学说十分注重的问题 ,阐明了不断增强党的阶级基础和不断扩大党的群众基础是中国共产党发展建设的成功经验 ,分析了新时期不断增强党的阶级基础和不断扩大党的群众基础是时代和形势发展变化的客观要求 ,提出了新世纪不断增强党的阶级基础和不断扩大党的群众基础应该注意把握的两个基本问题。  相似文献   
43.
We define a class of count distributions which includes the Poisson as well as many alternative count models. Then the empirical probability generating function is utilized to construct a test for the Poisson distribution, which is consistent against this class of alternatives. The limit distribution of the test statistic is derived in case of a general underlying distribution, and efficiency considerations are addressed. A simulation study indicates that the new test is comparable in performance to more complicated omnibus tests.  相似文献   
44.
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   
45.
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   
46.
The 1998 Korean Survey of Family Income and Expenditures was used to examine the overall consumption and saving behavior of Korean baby boomers and compared the differences in consumption and saving behavior between older and younger boomers. The t -test results indicated that the younger boomers allocated a significantly higher percentage of their expenditures on food away from home, household appliances, transportation and communication than did the older boomers, whereas the older boomers spent higher amounts and allocated larger budget shares on their children's education than did the younger boomers. The results of Ordinary Least-Squares (OLS) regression analysis showed that, holding other factors constant, older boomers not only spent significantly more in the total consumption expenditures and education expenditures, but older boomers also saved significantly less than did younger boomers.  相似文献   
47.
We examine the labor-cost savings associated with privatization by comparing earnings and employment trends of public and private sector refuse workers. Findings suggest that high union earnings for workers in the public sector are a source of labor-cost savings in the refuse industry. Evidence on job changers does not indicate that earnings for this group of workers are a compensating differential. Metropolitan area employment findings suggest that municipalities are less likely to use union refuse workers in the public sector when a relatively small percentage of area residents belong to a union. The authors thank Jacqueline Agesa, Keith Bender, Maria Crawford, and Richard Perlman for valuable suggestions. Research assistance from Eric Blackburn is greatly appreciated.  相似文献   
48.
49.
Many recent institutional reforms of the financial system have relied on the introduction of an explicit scheme of deposit insurance. This instrument aims at two main targets, contributing to systemic stability and protecting depositors. However, it may also affect the interest rate spread in the banking system, which can be viewed as an indicator of either inefficiency or market power in this financial segment. This paper provides an empirical investigation of the effect of deposit insurance and other institutional and economic variables on bank interest rates across countries. We find that deposit insurance increases the lending–deposit spread in banking. The main effect seems to arise not from the deposit side though, but from an increase in the lending rate. We interpret this result as evidence of the presence of moral hazard problems related to this instrument. We also find that higher quality of institutions is associated with lower spreads, thus contributing to eroding sources of market power in the banking sector.  相似文献   
50.
本文利用孔板及均速管的组合对空气-水两相流的流量及质量含气率进行了单、双参数测量研究,给出了两种元件的单参数公式及其双参数组合公式。对3种不同孔径的孔板、4组孔板及均速管间距以及两种型号的均速管进行了研究,获得了比较满意的结果。  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