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   11411篇
  免费   345篇
  国内免费   43篇
管理学   1266篇
劳动科学   12篇
民族学   110篇
人口学   789篇
丛书文集   822篇
理论方法论   868篇
综合类   1975篇
社会学   3845篇
统计学   2112篇
  2023年   62篇
  2022年   73篇
  2021年   100篇
  2020年   147篇
  2019年   196篇
  2018年   214篇
  2017年   335篇
  2016年   231篇
  2015年   279篇
  2014年   324篇
  2013年   1692篇
  2012年   417篇
  2011年   448篇
  2010年   411篇
  2009年   416篇
  2008年   459篇
  2007年   476篇
  2006年   418篇
  2005年   381篇
  2004年   264篇
  2003年   238篇
  2002年   292篇
  2001年   317篇
  2000年   248篇
  1999年   203篇
  1998年   164篇
  1997年   157篇
  1996年   156篇
  1995年   135篇
  1994年   100篇
  1993年   141篇
  1992年   146篇
  1991年   123篇
  1990年   137篇
  1989年   111篇
  1988年   111篇
  1987年   112篇
  1986年   101篇
  1985年   87篇
  1984年   115篇
  1983年   99篇
  1982年   95篇
  1981年   63篇
  1980年   93篇
  1979年   105篇
  1978年   72篇
  1977年   82篇
  1976年   70篇
  1975年   85篇
  1974年   68篇
排序方式: 共有10000条查询结果,搜索用时 687 毫秒
181.
182.
183.
Rural household survey data in the Ludhiana district of the Indian Punjab was used to study the nature and role of remittances in rural development. Of the 1646 outmigrants from the area since 1961, the 949 women who migrated for marriage and children under 12 years old were excluded from the study. Nearly all husbands who outmigrated had sent remittances. Parents and grandparents were 2nd and 3rd most likely to remit, but their numbers were small. Education did not correlate with remittance. Distance and time since emigration did not affect remittance. The frequency and the size of remittances are discussed. Remittances to outmigrants were insignificant. The remittances from outmigrants seem to raise the incomes and the levels of living of rural households. The remittances serve the purpose of redistributing income from urban to rural areas. Remittances also widened the gap between rich and poor in the rural areas because the better-off groups were more likely to receive remittances than the poorer groups. Most of the money sent from outmigrants was spent on consumable goods, food and clothing. Only a small proportion was spent on productive investment. This was usually done by farming families who invested in land or farm necessities. It is concluded that remittances from outmigrants can have a positive effect on the rural economies. Investment opportunities for nonagricultural families must be provided.  相似文献   
184.
Finding a suitable respondent at home is an essential and expensivecomponent of a household survey. This article reports on theresults of a study of the probabilities of finding someone aged14 or older at home and discusses the application of such datato survey design and budgeting.  相似文献   
185.
Public policy decisions in health are increasingly difficult and expensive. Although there will never be enough information available, private foundations can help to bridge the most important gaps in knowledge. Larger foundations may also wish to respond to those who doubt the value of foundation activities. This article reviews the experiences over the past eight years of The Robert Wood Johnson Foundation in employing evaluation and related social research procedures in the planning and implementation of a major philanthropic effort to improve the health and medical care of Americans. Discussed are the still evolving Foundation evaluation framework, the unanticipated problems in undertaking specific evaluations, and the substantive findings of some of the studies.  相似文献   
186.
An "age-time-area diagram" (referred to as a-t diagram) which is used as the basis for discussing different used and applications of variously defined mortality rates, as well two kinds of measurements for life expectancy is proprosed. The proposal is built upon the Lexis diagram. The a-t diagram is used to define a new way of measuring child mortality, projecting population, and proposing a formula for measuring successive and nonsuccessive life expectancy.  相似文献   
187.
188.
The development of the Health Demographic Profile System, which is based on the 1980 census, is described. The system includes social and economic indicators designed to identify high risk target populations, in terms of mental health and general health service needs, as well as to describe the social and economic structure of both mental health service and other small geographic areas. The report describes: (1) the original system, that is, the Mental Health Demographic Profile System (MHDPS), which is based on the 1970 census, including details of the approach and content, (2) the 1980 provisional indicators and planned products, (3) plans for the development of a longitudinal system based on 1960, 1970, and 1980 data, and (4) current and future studies related to the 1980 Health Demographic Profile System.  相似文献   
189.
Abstract Extract I have suggested that at a given birth order the probability of having a further pregnancy is greater when the last pregnancy had been spontaneously aborted than when it resulted in a birth.(2) Léridon,(3)in the course of a valuable paper on foetal wastage, presents data which, according to him, impugn my suggestion. I would like to question his claim.  相似文献   
190.
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