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   14190篇
  免费   372篇
管理学   2012篇
民族学   68篇
人才学   1篇
人口学   1247篇
丛书文集   80篇
教育普及   2篇
理论方法论   1284篇
综合类   351篇
社会学   7046篇
统计学   2471篇
  2023年   82篇
  2021年   83篇
  2020年   218篇
  2019年   280篇
  2018年   349篇
  2017年   479篇
  2016年   381篇
  2015年   287篇
  2014年   329篇
  2013年   2292篇
  2012年   472篇
  2011年   365篇
  2010年   283篇
  2009年   304篇
  2008年   312篇
  2007年   340篇
  2006年   289篇
  2005年   387篇
  2004年   331篇
  2003年   286篇
  2002年   315篇
  2001年   357篇
  2000年   329篇
  1999年   323篇
  1998年   215篇
  1997年   211篇
  1996年   222篇
  1995年   190篇
  1994年   207篇
  1993年   182篇
  1992年   245篇
  1991年   241篇
  1990年   213篇
  1989年   221篇
  1988年   201篇
  1987年   187篇
  1986年   191篇
  1985年   177篇
  1984年   209篇
  1983年   203篇
  1982年   168篇
  1981年   138篇
  1980年   145篇
  1979年   169篇
  1978年   138篇
  1977年   121篇
  1976年   103篇
  1975年   102篇
  1974年   97篇
  1973年   93篇
排序方式: 共有10000条查询结果,搜索用时 859 毫秒
171.
172.
173.
The paper provides an empirical analysis of saving and consumption choices of the elderly in Germany, based on the German income and expenditure surveys 1978 and 1983. Main feature of these data is the large sample size making it possible to analyze saving and consumption patterns of the very old (aged 75 and above).The observed age-consumption profiles are very different from those predicted by the pure life-cycle theory. Although wealth is declining between age 60 and 70, it increases again after 70, such that the very old have the highest savings rates among all age groups and accumulate wealth rather than decumulate it. These profiles are not confounded by cohort effects and mortality differences. The corresponding expenditure data suggest the following explanation: due to the generous German pension system and the almost complete coverage of health expenses by the mandatory health insurance in Germany, the declining consumption n very old age cannot exhaust the annuity income of the elderly such that wealth is being accumulated in old age.Research in this paper was supported by the National Institute on Aging, grant no. 3 PO1 AG05842-01. I appreciate the helpful comments by Doug Bernheim, Angus Deaton, Daniel McFadden, Jonathan Skinner, Konrad 'Stahl and David Wise, and two anonymous referees. I am indebted to Hermann Buslei and Johannes Velling who provided most valuable and able assistance.  相似文献   
174.
"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 unobservable heterogeneity."  相似文献   
175.
176.
College newspapers are a powerful but underutilized medium for educating students on health issues, including those related to drug and alcohol use on campus. Editors of these publications are in a position to wield significant influence among their readers. In addition to communicating factual information about the prevalence and impact of substance use among college students, editors can use the press to advocate changes in students' attitudes and behaviors and in college or community policies that affect substance use. A pilot conference was held to help New England college newspaper editors perceive the importance of their role in educating their peers about substance use and other health-related issues, and to offer concrete suggestions as to how they can incorporate these topics into an "activist" campus press.  相似文献   
177.
178.
This is a report from a conference held in Tokyo, Japan, in 1991 on the economic aspects of labor mobility in Asia. The authors briefly describe selected papers given at the conference and outline conference topics. A list of participants is included. (SUMMARY IN FRE AND SPA)  相似文献   
179.
180.
"The number of forced migrants...is estimated today to exceed 40 million [worldwide]. The changed international climate of the 1990s...has shifted the focus from the asylum and resettlement countries to the countries of origin: there is today a greater willingness to intervene in other countries' affairs either to avert the creation of new flows of focused migrants or to assist internally displaced populations, and there is the expectation of large-scale voluntary returns of refugees in asylum. This article discusses these and other policy issues concerning forced migration in this new international environment."  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