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   13790篇
  免费   345篇
管理学   1775篇
民族学   59篇
人才学   1篇
人口学   1188篇
丛书文集   82篇
教育普及   2篇
理论方法论   1336篇
综合类   346篇
社会学   7059篇
统计学   2287篇
  2023年   67篇
  2021年   73篇
  2020年   214篇
  2019年   259篇
  2018年   274篇
  2017年   415篇
  2016年   321篇
  2015年   254篇
  2014年   278篇
  2013年   2251篇
  2012年   443篇
  2011年   369篇
  2010年   236篇
  2009年   270篇
  2008年   318篇
  2007年   312篇
  2006年   253篇
  2005年   383篇
  2004年   333篇
  2003年   288篇
  2002年   293篇
  2001年   341篇
  2000年   317篇
  1999年   323篇
  1998年   226篇
  1997年   230篇
  1996年   236篇
  1995年   211篇
  1994年   215篇
  1993年   189篇
  1992年   246篇
  1991年   249篇
  1990年   218篇
  1989年   228篇
  1988年   207篇
  1987年   193篇
  1986年   199篇
  1985年   185篇
  1984年   216篇
  1983年   205篇
  1982年   169篇
  1981年   145篇
  1980年   142篇
  1979年   174篇
  1978年   145篇
  1977年   124篇
  1976年   107篇
  1975年   108篇
  1974年   98篇
  1973年   97篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
11.
Simulation results are reported on methods that allow both within group and between group heteroscedasticity when testing the hypothesis that independent groups have identical regression parameters. The methods are based on a combination of extant techniques, but their finite-sample properties have not been studied. Included are results on the impact of removing all leverage points or just bad leverage points. The method used to identify leverage points can be important and can improve control over the Type I error probability. Results are illustrated using data from the Well Elderly II study.  相似文献   
12.
Abstract

Confidence sets, p values, maximum likelihood estimates, and other results of non-Bayesian statistical methods may be adjusted to favor sampling distributions that are simple compared to others in the parametric family. The adjustments are derived from a prior likelihood function previously used to adjust posterior distributions.  相似文献   
13.
In this article, we explore views on an age-friendly space in the Netherlands by analysing the responses of older individuals (N = 54) in focus groups and by examining the perspectives around an age-friendly zone in the Netherlands, Parkstad Limburg. We found that a central issue in the wishes for living at a later age are adjustments to envisioned physical limitations that come with the ageing process; this includes adjustments to ensure safety, accessibility and mobility, in order to facilitate older individuals' efforts to stay engaged with the world around them. In their wishes, the older participants constructed ideal dwelling places that closely resembled a senior home, but at the same time they rejected wishing to live in a place that was identified as a senior home. We explain this paradox by the representation of such a space as being for old people, i.e. needy older individuals, which was not how the older participants wished to be identified. We conclude that the conception of age-friendly environments will have to face the difficult challenge of overcoming the association with old age, while simultaneously taking into account adjustments that signify and relate to the ageing process and that seem inescapably tied to oldness.  相似文献   
14.
15.
The historical relationship between the electoral college and controversial U.S. presidential elections, specifically with respect to conflict, is examined. The elections of 1800, 1824, 1860, 1876, 1888, 1968, and 2000 are examined. Aside from the 2000 election, there has been essentially no conflict in American history due to the electoral college. The constitutional structure and thinking behind the form of the electoral college is given, with emphasis on the federal aspects of the structure. The current movement to abolish the electoral college in favor of direct popular vote is depicted, along with the arguments against making that change. The conclusion is that we as a nation are far better off to retain the status quo than to make the called-for change.  相似文献   
16.
17.
18.
What do voters really know about party platforms and how do they perceive the contents? Are there any relationships between party election platforms and electoral behavior? Despite of much research on parties, there are hardly any answers to these questions. If political parties devise programmes in order to influence political attitudes or electoral behavior, it will be necessary that these programmes are read by people. But it seems to be unclear if and how people do so. This article shows clearly that voters don’t know much about party manifestoes. Still, programmes are more important for voters than many people believe. Programmes are also an important factor for electoral behavior. But there is still a lack of data to get evident results.  相似文献   
19.
20.
Using an increasing returns specification for distribution, an inverted U pattern between the share of distribution in gross domestic product and the level of development is shown to arise. A cross-section time-series data set is constructed and merged with one used to analyze the service sector. In contrast to the rising pattern found for services, an average time-series relation that exhibits an inverted U pattern is established. The empirical results are robust, for example, to choice of functional form and country and time period coverage. A similar pattern is found in the average cross-section (country) relation between distribution and development.  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