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   12500篇
  免费   358篇
管理学   1538篇
民族学   55篇
人口学   1032篇
丛书文集   72篇
教育普及   3篇
理论方法论   1129篇
综合类   121篇
社会学   6820篇
统计学   2088篇
  2023年   68篇
  2021年   72篇
  2020年   163篇
  2019年   228篇
  2018年   265篇
  2017年   397篇
  2016年   280篇
  2015年   205篇
  2014年   289篇
  2013年   2500篇
  2012年   354篇
  2011年   354篇
  2010年   264篇
  2009年   239篇
  2008年   265篇
  2007年   263篇
  2006年   296篇
  2005年   263篇
  2004年   227篇
  2003年   204篇
  2002年   219篇
  2001年   293篇
  2000年   274篇
  1999年   289篇
  1998年   185篇
  1997年   169篇
  1996年   227篇
  1995年   221篇
  1994年   226篇
  1993年   231篇
  1992年   241篇
  1991年   231篇
  1990年   245篇
  1989年   222篇
  1988年   207篇
  1987年   187篇
  1986年   171篇
  1985年   177篇
  1984年   185篇
  1983年   133篇
  1982年   131篇
  1981年   105篇
  1980年   121篇
  1979年   119篇
  1978年   96篇
  1977年   88篇
  1976年   85篇
  1975年   88篇
  1974年   61篇
  1973年   55篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
771.
772.
773.
774.
775.
An analysis of data mainly from China's 1990 and 2000 censuses and 2005 mini-census shows how fertility decline between 1975 and 2005 in the province of Guangdong has been influenced by both fertility policy and economic and social development. Guangdong's development since 1975 has been very rapid and has attracted huge numbers of migrants from other provinces. The analysis of the province's fertility trend from 1975 shows clearly the influence of fertility policy on the trend. The analysis also shows that economic development has brought about large changes in population composition by urban/rural residence, education, occupation, and migration status, which, together with large fertility differentials by these characteristics, have contributed substantially to Guangdong's fertility decline, in large part through changes in proportions currently married.  相似文献   
776.
This paper inquires into the kind of desire specific to the fundamentalist mode. The author suggests that the simplistic, black-and-white, ostensibly “horizontal” divisions between good and evil, right and wrong, pure and impure that characterize the fundamentalist sensibility create at the same time two phenomena: (a) gross emotional intensity that endows experience with a stark quality (e.g., grandiosity and abjection), and (b) a “vertical” division that constructs basic inequalities. The “vertical” difference between the believer and his God intensifies longing and mystical desire. The longing of the holder of such desire is to merge with a tantalizing, perfect, and cruel God and to renounce his individuality and even life. The concept of a “regression-to-the father” is a tempting and potentially dangerous process of abnegation if not countered by the need to overcome the “father” one so submissively desires.  相似文献   
777.
778.
779.
This paper presents an analysis of levels of life expectancy and their patterns of change among six socio-economically differentiated sub-populations of England and Wales for the period 1851–1911. Differences in mortality levels among these sub-groups and their rates of change are analyzed with respect to three groups of explanatory variables, viz., environmental, stratification and demographic variables. Their relative importance for different periods is assessed and discussed. The findings show consistency with two previous studies, which have suggested that medical advances had little effect on the increase in life expectancy during the second half of the nineteenth century. The present paper supports the results of one study in that public health measures affected life expectancies earlier, while subsequently, the increase in standards of living was more important.  相似文献   
780.
Study of a Markov model for a high-quality dependent process   总被引:1,自引:0,他引:1  
For high-quality processes, non-conforming items are seldom observed and the traditional p (or np) charts are not suitable for monitoring the state of the process. A type of chart based on the count of cumulative conforming items has recently been introduced and it is especially useful for automatically collected one-at-a-time data. However, in such a case, it is common that the process characteristics become dependent as items produced one after another are inspected. In this paper, we study the problem of process monitoring when the process is of high quality and measurement values possess a certain serial dependence. The problem of assuming independence is examined and a Markov model for this type of process is studied, upon which suitable control procedures can be developed.  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