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   23597篇
  免费   568篇
  国内免费   1篇
管理学   2990篇
民族学   107篇
人才学   4篇
人口学   2128篇
丛书文集   138篇
教育普及   2篇
理论方法论   2152篇
综合类   428篇
社会学   11548篇
统计学   4669篇
  2023年   112篇
  2021年   124篇
  2020年   350篇
  2019年   428篇
  2018年   552篇
  2017年   775篇
  2016年   550篇
  2015年   452篇
  2014年   530篇
  2013年   4035篇
  2012年   765篇
  2011年   621篇
  2010年   489篇
  2009年   430篇
  2008年   494篇
  2007年   525篇
  2006年   461篇
  2005年   593篇
  2004年   486篇
  2003年   462篇
  2002年   473篇
  2001年   607篇
  2000年   553篇
  1999年   547篇
  1998年   397篇
  1997年   357篇
  1996年   412篇
  1995年   358篇
  1994年   381篇
  1993年   329篇
  1992年   422篇
  1991年   429篇
  1990年   390篇
  1989年   371篇
  1988年   376篇
  1987年   342篇
  1986年   315篇
  1985年   344篇
  1984年   370篇
  1983年   343篇
  1982年   271篇
  1981年   228篇
  1980年   231篇
  1979年   282篇
  1978年   226篇
  1977年   191篇
  1976年   157篇
  1975年   158篇
  1974年   155篇
  1973年   145篇
排序方式: 共有10000条查询结果,搜索用时 343 毫秒
21.
22.
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   
23.
A class of symmetric bivariate uniform distributions is proposed for use in statistical modeling. The distributions may be constructed to be absolutely continuous with correlations as close to±1 as desired. Expressions for the correlations, regressions and copulas are found. An extension to three dimensions is proposed.  相似文献   
24.
25.
We present a new characterization technique extracted from a well known idea in statistical inference. We use the partial derivative of the logarithm of the survival function in connection with truncated moments to characterize several probability distributions. Our methods introduce a unified technique to obtain several well known results in a unified way.  相似文献   
26.
27.
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   
28.
29.
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   
30.
In this essay we discuss changes in the cultural meaning and significance of time in postmodernism. We begin by examining the experience of time and space in the Middle Ages and its radical alteration following the Renaissance. After a relatively brief period of optimism during the Enlightenment regarding the scientific control over time and space, a new crisis beginning in the mid‐nineteenth century emphasized the increasing disjuncture between external, objective notions of time and the way time was experienced subjectively. We argue that the current literature on time and post‐modernity is best understood in this context, where earlier disequilibriating effects brought about by modern technologies are exacerbated by new developments in transportation and communications technology. Here we discuss the particular effects on topics of interest to social scientists such as changes in notions of personal identity and the effacement of historical time. We conclude with a call for more empirically grounded work on questions concerning time in postmodernism. We lament the paucity of concrete data as well as the excess of useless polemics and recommend several researchers already conducting work in this field.  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