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   484篇
  免费   32篇
管理学   63篇
民族学   10篇
人口学   34篇
丛书文集   3篇
理论方法论   56篇
综合类   7篇
社会学   308篇
统计学   35篇
  2023年   2篇
  2021年   4篇
  2020年   16篇
  2019年   12篇
  2018年   14篇
  2017年   28篇
  2016年   16篇
  2015年   14篇
  2014年   20篇
  2013年   83篇
  2012年   19篇
  2011年   13篇
  2010年   15篇
  2009年   10篇
  2008年   11篇
  2007年   11篇
  2006年   14篇
  2005年   8篇
  2004年   10篇
  2003年   11篇
  2002年   17篇
  2001年   18篇
  2000年   12篇
  1999年   14篇
  1998年   22篇
  1997年   6篇
  1996年   5篇
  1995年   6篇
  1994年   4篇
  1993年   10篇
  1992年   2篇
  1991年   4篇
  1990年   3篇
  1989年   3篇
  1988年   3篇
  1986年   4篇
  1985年   6篇
  1984年   5篇
  1983年   5篇
  1982年   3篇
  1981年   2篇
  1980年   3篇
  1979年   3篇
  1978年   5篇
  1977年   2篇
  1976年   3篇
  1975年   3篇
  1974年   3篇
  1969年   2篇
  1963年   1篇
排序方式: 共有516条查询结果,搜索用时 218 毫秒
21.
22.
Although recent studies examine overall fertility trends in West Africa, few using advanced demographic techniques focus on adolescents. This study explores long‐term patterns of adolescent childbearing in 12 West African countries using 51 Demographic and Health Surveys covering birth cohorts that span 54 years (1940–1994). We employ classic demographic measures as well as disaggregation by early‐ (10–14 years old), middle‐ (15–17), and late adolescence (18–19). Cohort‐based estimates of total adolescent births, parity progression ratios, and rapid repeat birth probabilities reveal little change over time. Most women begin childbearing in adolescence, the progression to additional adolescent births remains common, and the incidence of rapid repeat births is high. In recent cohorts, women exit adolescence with an average of between 0.4 (Ghana) to 1.3 (Niger) births. Contrary to common assumptions, it is women commencing motherhood in early‐ and middle‐, not later adolescence, who account for most West African adolescent fertility.  相似文献   
23.
"The paper presents a discussion of the economic justification for taking cities seriously, a section outlining the scale of urbanisation and some of the issues raised, a section that discusses the policy approaches, one that looks at the local agencies for the formulation and execution of policy, and a short final part on some of the implications for aid policy." The focus is on the importance of the urban sector for economic development in developing countries.  相似文献   
24.
Economic development and urbanisation   总被引:1,自引:0,他引:1  
Trends in urbanization in developing countries are analyzed, with a focus on the causes of rapid urbanization and particularly on the role of the division of labor. The impact of urbanization on the process of economic development is described. The role of government and of urban planning policies is also considered.  相似文献   
25.
Many scholars pinpoint the family as one of the most important loci of class differences and see parenting in particular as a mechanism for the reinforcement and reproduction of class variation. In this article, the authors explore the role of educational background, occupations, family resources, state surveillance, and culture in explaining how and why parenting practices vary by class backgrounds. The article reviews research that focuses on class‐based cultural norms and values, as well as research that argues that structural conditions and access to resources are more important than culture in influencing parenting norms, beliefs, and outcomes. The authors then discuss recent research that suggests that rather than seeing culture and structure as dichotomous, in fact, culture and structure are intertwined and it is through seeing them as mutually reinforcing factors that we can best make sense of class‐related parenting differences.  相似文献   
26.
27.
Increasing obesity among Americans is a serious issue in the US, especially in the pediatric and young adult population. We use a longitudinal design to examine the relationship between childhood poverty/welfare receipt and obesity onset and continuity from adolescence into young adulthood using three waves of the National Longitudinal Study of Adolescent Health. We include multiple measures of disadvantage that co-occur with poverty and model potential mediating mechanisms within a life course framework. We find a significant effect of poverty/welfare receipt in childhood on obesity outcomes for females, but not for males. However, other measures of socioeconomic disadvantage such as neighborhood poverty, and low parental education are related to obesity in both males and females. Poverty may impact female obesity through the mediating effects of physical activity, inadequate sleep, skipping breakfast and certain forms of parental monitoring, while race is an important confounder of poverty’s influence. This paper highlights the important influence of poverty and other aspects of social disadvantage on obesity outcomes during this critical transition to adulthood. Implications of this research include physical activity and parenting interventions for low-income youth. In addition, governmental efforts should be made to increase physical activity opportunities in poor neighborhoods.
Hedwig LeeEmail:
  相似文献   
28.
Having an unintended birth is strongly associated with the likelihood of having later unintended births. We use detailed longitudinal data from the Add Health Study (N = 8300) to investigate whether a host of measured sociodemographic, personality, and psychosocial characteristics select women into this “trajectory” of unintended childbearing. While some measured characteristics and aspects of the unfolding life course are related to unintended childbearing, explicitly modeling these effects does not greatly attenuate the association of an unintended birth with a subsequent one. Next, we statistically control for unmeasured time-invariant covariates that affect all birth intervals, and again find that the association of an unintended birth with subsequent ones remains strong. This persistent, strong association may be the direct result of experiencing an earlier unintended birth. We propose several mechanisms that might explain this strong association.  相似文献   
29.
There is a well-established literature dedicated to why couples divorce, transitions associated with divorce, and the impact of divorce on families. However, little is known about the divorce decision-making process. We conducted in-depth interviews with individuals who have recently considered divorce (n = 30) and asked specifically about the roles of 2 concepts in their decision-making process: clarity and confidence. Three major themes emerged from the data: (a) Clarity about a decision to divorce or stay married is desired, it fluctuates, and takes time to find; (b) pivotal moments can bring clarity; and (c) confidence (in the final decision) is desired. Clinical implications and directions for future research are discussed.  相似文献   
30.
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