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   3347篇
  免费   122篇
  2020年   33篇
  2019年   50篇
  2018年   95篇
  2017年   85篇
  2016年   97篇
  2015年   69篇
  2014年   70篇
  2013年   1050篇
  2012年   96篇
  2011年   101篇
  2010年   82篇
  2009年   86篇
  2008年   80篇
  2007年   77篇
  2006年   75篇
  2005年   51篇
  2004年   43篇
  2003年   27篇
  2002年   39篇
  2001年   37篇
  2000年   34篇
  1999年   38篇
  1998年   32篇
  1997年   29篇
  1996年   32篇
  1995年   31篇
  1994年   28篇
  1993年   36篇
  1992年   31篇
  1991年   32篇
  1990年   21篇
  1989年   19篇
  1988年   33篇
  1987年   29篇
  1986年   39篇
  1985年   44篇
  1984年   41篇
  1983年   40篇
  1982年   52篇
  1981年   36篇
  1980年   33篇
  1979年   44篇
  1978年   33篇
  1977年   40篇
  1976年   25篇
  1975年   38篇
  1974年   24篇
  1973年   22篇
  1970年   18篇
  1969年   22篇
排序方式: 共有3469条查询结果,搜索用时 31 毫秒
11.
12.
Most discussions of the relationship between class and political orientation assume a coherent and homogeneous class response. Here, the new middle class of professional workers is disassembled into constituent occupations. An analysis of political preference data by means of ‘correspondence analysis’ reveals a pattern which is consistent with a structural relationship between occupational experience and political preference.  相似文献   
13.
14.
Results of a combined archaeological and analytical project of Late Neolithic/Early Bronze Age copper, bronze and lead artefacts from four distinct areas of mainland Greece are presented. The aim of the study is to understand better the stages of technological development of each region, their possible ore sources and also to assess any external contribution to or internal evolution of their metallurgy. Interesting results which could challenge the established view of Late Neolithic/Early Bronze Age metallurgy in the Greek mainland are presented.  相似文献   
15.
16.
Discrete-choice theory and logit models are evaluated for their usefulness in analyzing migration patterns in a zonal system. The authors "argue that spatial effects and more specifically the relative location of zones are not taken into account in such analyses. We, therefore, introduce a measure of spatial structure and advocate its usage as a predictor of migration in such models. In an example of intrametropolitan migration in Toronto [Canada], we demonstrate that this variable is not only significant but also it improves the performance of all the other variables with the greatest impact on the distance between zones. In addition, inclusion of this variable improves the overall performance of the model in terms of residuals."  相似文献   
17.
18.
The article shows that the elite, nationalistic and imperial mentality of German medicine in the second half of the nineteenth century was closely connected to its aim to be understodd as a natural science. With this in view leading representatives of German medicine propagated a scientific approach to man and nature instead of the traditional values of humanistic education (“Bildung”). One of the most important consequences of the new scientific ideal in medicine — integration in governmental planning, the change in professionel status of doctors, the increasing tendeny to recognize biologistic ideologies — was the loss of the medical ideal of the ars medica, a subject which has not received sufficient thematic attention. This theme is explored in the third part of the article.  相似文献   
19.
Development of more sophisticated techniques for modeling longitudinal data has implications for improving our understanding of migration. This paper uses longitudinal data from the British Social Change and Economic Life initiative to disentangle the effects of population heterogeneity, progress through the life cycle and secular change on observed migration differentials. The data consist of retrospective life histories from people sampled in several contrasting localities in Great Britain, in which residential moves can be linked to changes in occupation and household structure. We present a framework for analysis of data of this type using a generalized linear modeling approach, together with results concerning variations in the probability of migration with age, gender, and changes in household and occupational circumstances. Of particular note is the evidence of substantial duration-of-residence effects and an unexpected later-career increase in migration propensity.  相似文献   
20.
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