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   1805篇
  免费   60篇
管理学   95篇
民族学   15篇
人口学   184篇
丛书文集   12篇
理论方法论   214篇
综合类   9篇
社会学   1210篇
统计学   126篇
  2023年   8篇
  2022年   5篇
  2021年   18篇
  2020年   62篇
  2019年   56篇
  2018年   62篇
  2017年   87篇
  2016年   64篇
  2015年   44篇
  2014年   48篇
  2013年   360篇
  2012年   60篇
  2011年   74篇
  2010年   42篇
  2009年   42篇
  2008年   57篇
  2007年   57篇
  2006年   65篇
  2005年   61篇
  2004年   78篇
  2003年   36篇
  2002年   50篇
  2001年   39篇
  2000年   15篇
  1999年   24篇
  1998年   21篇
  1997年   22篇
  1996年   11篇
  1995年   12篇
  1994年   18篇
  1993年   18篇
  1992年   11篇
  1991年   22篇
  1990年   20篇
  1989年   18篇
  1988年   16篇
  1987年   21篇
  1986年   12篇
  1985年   12篇
  1984年   13篇
  1983年   16篇
  1982年   7篇
  1981年   12篇
  1980年   10篇
  1978年   11篇
  1977年   5篇
  1976年   9篇
  1974年   7篇
  1973年   5篇
  1971年   5篇
排序方式: 共有1865条查询结果,搜索用时 458 毫秒
721.
The study examined the predictive role of social support, self-efficacy and gender on self-reported stress among inpatients’ caregivers. One hundred and sixty eight (36 males and 132 females) inpatients’ caregivers were sampled from University of Nigeria Teaching Hospital (97) and Niger Foundation Hospital (71) all in Enugu, Nigeria. Three instruments were used for the data collection, namely, Multidimensional Scale of Perceived Social Support (MSPSS), New General Self Efficacy Scale (NGSES), and the Perceived Stress Scale (PSS). The study adopted a cross sectional design and Multiple Regression was used for data analysis. Results showed that social support negatively predicted inpatient caregivers’ reported stress (β = ?.28, p < .001). Gender significantly predicted stress among the inpatients’ caregivers (β = .35, p < .001). Findings were discussed and implications of the study highlighted.  相似文献   
722.
723.
Missing observations in both responses and covariates arise frequently in longitudinal studies. When missing data are missing not at random, inferences under the likelihood framework often require joint modelling of response and covariate processes, as well as missing data processes associated with incompleteness of responses and covariates. Specification of these four joint distributions is a nontrivial issue from the perspectives of both modelling and computation. To get around this problem, we employ pairwise likelihood formulations, which avoid the specification of third or higher order association structures. In this paper, we consider three specific missing data mechanisms which lead to further simplified pairwise likelihood (SPL) formulations. Under these missing data mechanisms, inference methods based on SPL formulations are developed. The resultant estimators are consistent, and enjoy better robustness and computation convenience. The performance is evaluated empirically though simulation studies. Longitudinal data from the National Population Health Survey and Waterloo Smoking Prevention Project are analysed to illustrate the usage of our methods.  相似文献   
724.
Education influences aspects of demographic behaviour and outcomes including a child sex preference. Sex preferences of children have been studied in different societies because of its associated social and demographic implications. Using the 2014 Ghana Demographic and Health Survey, we examined the association between educational attainment and sex preferences of children. Findings from the study indicated that there is preference for sons (26.1%) compared to daughters (17.4%). At higher levels of education, there is a higher likelihood for no preference for a sex of a child. Among the characteristics of respondents that influenced sex preferences are: gender, lineage, religion, occupation and desired family size. Acquisition of knowledge through education to some extent alter fertility preferences and hence the need to motivate individuals to attain some level of education.  相似文献   
725.
Racist and imperialist narratives have long underpinned White and “Northern”/“Western” feminists’ representations of people of color and of Africans. Through textual analysis, this essay places Bring Back Our Girls—the recent campaign to locate and return 276 abducted Nigerian students—in the context of this troubled history. Within the Global North, both the appropriation and abandonment of Bring Back Our Girls fundamentally relied upon a conceptual framework rooted in imperialist and racist histories. By revealing the imbrication of the international campaign in existing power relations, this project challenges the assertion that digital campaigns are technologically determined or “outside” history.  相似文献   
726.
727.
728.
Health staus is of primary importance in determining the lifestyle of older persons, in contrast to other periods of life, in which socio-economic status is of major significance. Research is presented on an alternative living arrangement in Florida for the slightly dependent elderly, in which older persons share living facilities and other aspects of a common lifestyle. This comprises one set of realistic alternatives which can be workable, economical, energy-conserving, and fulfilling in terms of the quality of life.  相似文献   
729.
730.
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