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   759篇
  免费   43篇
管理学   50篇
民族学   4篇
人才学   1篇
人口学   115篇
丛书文集   2篇
理论方法论   137篇
综合类   3篇
社会学   447篇
统计学   43篇
  2024年   2篇
  2023年   5篇
  2021年   7篇
  2020年   18篇
  2019年   25篇
  2018年   36篇
  2017年   35篇
  2016年   38篇
  2015年   25篇
  2014年   41篇
  2013年   164篇
  2012年   23篇
  2011年   46篇
  2010年   28篇
  2009年   22篇
  2008年   24篇
  2007年   26篇
  2006年   20篇
  2005年   19篇
  2004年   17篇
  2003年   9篇
  2002年   20篇
  2001年   12篇
  2000年   11篇
  1999年   10篇
  1998年   12篇
  1997年   3篇
  1996年   10篇
  1995年   7篇
  1994年   8篇
  1993年   10篇
  1992年   11篇
  1991年   6篇
  1990年   3篇
  1989年   5篇
  1988年   2篇
  1987年   4篇
  1985年   3篇
  1984年   5篇
  1983年   5篇
  1981年   3篇
  1980年   4篇
  1979年   2篇
  1978年   3篇
  1977年   3篇
  1976年   2篇
  1975年   3篇
  1974年   2篇
  1972年   1篇
  1969年   1篇
排序方式: 共有802条查询结果,搜索用时 31 毫秒
91.
Matching and attribute trade are two perspectives used to explain mate selection. We investigated patterns of matching and trade, focusing on obesity, using Add Health Romantic Pair data (N = 1,405 couples). Obese individuals, relative to healthy weight individuals, were less likely to have physically attractive partners, with this disadvantage greater for women than men, and greater for White women than Black women. Additional education, a more attractive personality, and better grooming increased the probability of having a physically attractive partner and offset the disadvantage of obesity for some individuals. Unexpectedly, we found women, like men, trade education for their partners’ physical attractiveness. Despite evidence of attribute trade, matching with respect to physical characteristics was the dominant mate selection pattern.  相似文献   
92.
93.
94.
95.
The current approach to health risk assessment of toxic waste sites in the U.S. may lead to considerable expenditure of resources without any meaningful reduction in population exposure. Risk assessment methods used generally ignore background exposures and consider only incremental risk estimates for maximally exposed individuals. Such risk estimates do not address true public health risks to which background exposures also contribute. The purpose of this paper is to recommend a new approach to risk assessment and risk management concerning toxic waste sites. Under this new approach, which we have called public health risk assessment, chemical substances would be classified into a level of concern based on the potential health risks associated with typical national and regional background exposures. Site assessment would then be based on the level of concern for the particular pollutants involved and the potential contribution of site contaminants to typical background human exposures. While various problems can be foreseen with this approach, the key advantage is that resources would be allocated to reduce the most important sources of human exposure, and site remediation decisions could be simplified by focussing on exposure assessment rather than questionable risk extrapolations.  相似文献   
96.
Previous studies have failed to examine (a) the simultaneity of decisions to bear children and to dissolve a marriage and (b) the effects of the childbearing in the period just before dissolution on the likelihood of disruption. We attempted to resolve both problems by developing a simultaneous logit model of the interrelationship between the probability of separation and of having a birth during this period (when dissolution presumably is being considered). The model was estimated at successive durations of first marriage, using data for white women in the 1970 National Fertility Survey. The results indicate that childbearing patterns— number of children and age of youngest child at the beginning of the marital interval being studied and fertility during the interval—did not influence the likelihood of separation in simple or consistent ways over the marital life course, nor did marital strife (as indicated by separation) seem to affect childbearing throughout marriage.  相似文献   
97.
98.
99.
School-based approaches to intervention with depressed minority adolescents is discussed within a preventive framework. The symptomatology and epidemiology of depression is presented as it pertains to minority group adolescents. Specific suggestions for school-based services, the uses of school-based mental health professionals, and for coordination with mental health agencies are provided.  相似文献   
100.
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