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   11825篇
  免费   202篇
管理学   1477篇
民族学   53篇
人口学   940篇
丛书文集   62篇
教育普及   3篇
理论方法论   1051篇
综合类   117篇
社会学   6295篇
统计学   2029篇
  2023年   58篇
  2021年   62篇
  2020年   144篇
  2019年   221篇
  2018年   244篇
  2017年   353篇
  2016年   252篇
  2015年   192篇
  2014年   260篇
  2013年   2404篇
  2012年   308篇
  2011年   315篇
  2010年   231篇
  2009年   213篇
  2008年   238篇
  2007年   236篇
  2006年   253篇
  2005年   226篇
  2004年   195篇
  2003年   172篇
  2002年   191篇
  2001年   280篇
  2000年   260篇
  1999年   277篇
  1998年   177篇
  1997年   154篇
  1996年   212篇
  1995年   212篇
  1994年   223篇
  1993年   224篇
  1992年   237篇
  1991年   221篇
  1990年   242篇
  1989年   213篇
  1988年   204篇
  1987年   180篇
  1986年   167篇
  1985年   176篇
  1984年   178篇
  1983年   127篇
  1982年   128篇
  1981年   107篇
  1980年   120篇
  1979年   116篇
  1978年   97篇
  1977年   85篇
  1976年   83篇
  1975年   85篇
  1974年   57篇
  1973年   54篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
931.
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   
932.
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   
933.
934.
The participation of displaced populations in elections organizedas part of a peacebuilding process is increasingly recognizedas fundamental to the goal of peacebuilding itself. Guaranteesfor their electoral participation are important, first and foremost,as a matter of rights. They also are critical for the legitimacyof the election and its results, and thus for national and regionalstability. However, translating these provisions into practicecan be a complex task, which requires addressing a range oflegal, administrative, practical, and political issues. Thisarticle explores the relationship between peacebuilding andthe electoral participation of displaced populations, arguingthat it is not possible to build peace when exclusion is dejure or de facto built into the process.  相似文献   
935.
936.
937.
Weak ties, particularly those to potential employers, play a more important role than strong ties in the immigration of professionals to the United States. I operationalize network strength through the class of admission variable in the Immigration and Naturalization Service's public use data files,Immigrants Admitted to the United States, 1972–1992. I also examine the differential impact of legislative measures on the availability of strong versus weak ties for four groups of professionals: physicians, nurses, engineers and scientists. Not only do weak ties figure heavily on the immigration experiences of professionals, but those impacts affect women differently than men. Professional women rely more heavily on strong ties than on weak ties when compared with males in their respective professions, with the exception of nursing. These findings suggests a need for further study into the migration experiences of professionals as well as more research into how gendered networks develop among immigrant professionals and how those networks influence (either positively or negatively) immigrant adaptation to United States' society.  相似文献   
938.
This not extends T. L. F. Devis's recent investigation of the relationship between tribal affiliation and fertility in Sierra Leone. Controls are introduced for age structure and economic variables. The findings suggest that tribal affiliation does not have much independent influence on fertility after these factors are allowed for.  相似文献   
939.

A survey is given of the use of modern statistical techniques in event history analysis, and in particular in the study of multi‐state life‐tables in demography. Emphasis is placed on the interplay between partial likelihood and nonparametric maximum likelihood based methods, a) when analysing semi‐Markov models or models with repeated spells, and b) in frailty models for inobservable heterogeneity.  相似文献   
940.
Through a representative sample of 9,100 and 8,755 employees in 2008 and 2010, and a using two-stage structural equation model, this article empirically analyses the multi-dimensional determinants (direct effects) of job quality in Spain. The research concludes that: #1 despite the economic crisis, job quality improved over the analysis period; #2 there was a shift in job quality explanation towards a more complete model with greater preponderance of the dimensions connected with the workplace relationships, work intensity, working conditions and work–life balance in detriment to dimensions connected with the intrinsic job quality and extrinsic rewards. These results suggest the importance of the working environment and social relationships, beyond the quality of the workplace, as important tools of employment public policy to improve labor markets and to overcoming the economic crisis.  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