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   1710篇
  免费   43篇
管理学   130篇
民族学   11篇
人口学   192篇
丛书文集   3篇
理论方法论   234篇
综合类   12篇
社会学   1051篇
统计学   120篇
  2024年   3篇
  2023年   10篇
  2022年   7篇
  2021年   8篇
  2020年   36篇
  2019年   42篇
  2018年   49篇
  2017年   68篇
  2016年   59篇
  2015年   33篇
  2014年   50篇
  2013年   292篇
  2012年   61篇
  2011年   80篇
  2010年   47篇
  2009年   42篇
  2008年   63篇
  2007年   61篇
  2006年   75篇
  2005年   58篇
  2004年   63篇
  2003年   57篇
  2002年   63篇
  2001年   42篇
  2000年   50篇
  1999年   31篇
  1998年   29篇
  1997年   23篇
  1996年   19篇
  1995年   16篇
  1994年   28篇
  1993年   17篇
  1992年   20篇
  1991年   14篇
  1990年   14篇
  1989年   13篇
  1988年   9篇
  1987年   10篇
  1986年   9篇
  1985年   12篇
  1984年   16篇
  1983年   9篇
  1982年   6篇
  1981年   3篇
  1980年   8篇
  1979年   6篇
  1978年   4篇
  1977年   3篇
  1975年   3篇
  1971年   3篇
排序方式: 共有1753条查询结果,搜索用时 15 毫秒
881.
Recent changes in life expectancy among race and sex groups in New York City were evaluated by analyzing the relative effects of different causes of death in 1983 and 1992, a period in which life expectancy at birth declined by 1.1 years among white males, remained unchanged among black males, and increased 1.2 years among white and black females. Heart disease was found to be the leading cause of death making positive contributions to changes in life expectancy regardless of race or sex, and HIV/AIDS was the leading negative contributor. Overall, deaths from infectious diseases and external causes are becoming more important compared to degenerative conditions in explaining trends in life expectancy in New York City. Past improvements in survival due to reductions in infant deaths are being reversed due to an increase in deaths from preventable causes such as violence and AIDS. Future gains in longevity may require a greater emphasis on policies and programs emphasizing conflict resolution and HIV prevention.  相似文献   
882.
Degree of sex equality in rural areas of the U.S.S.R. is assessed with reference to a multi-variable model which specifies demographic, technological, social, and ideological factors associated with sex stratification. Such analysis reveals that the emphasis in the U.S.S.R. on women's participation in production as the key to sex equality ignores other dimensions of sex stratification which are not changed using this tactic. In particular, rural traditions of higher birth rates, more authoritarian families, greater religious emphasis, and male scorn for women have kept the status of rural women even lower than that of their urban counterparts. Additionally, the agrarian techno-economic base and lack of institutional supports for childcare and housework help perpetuate sex stratification. Increasing sex differentiation is probably in store for the Soviet Union, because official pronatalist policies are likely to be facilitated by expanding the service sector, which will further increase the division of labor in the market.  相似文献   
883.
Ethiopia, with nearly 65 millionpeople, is the second most populous country in sub-Saharan Africa. Fertility levels are among the highest in the world. Using the matched wife-husband sample from the 1990 National Family and Fertility Survey of Ethiopia we investigate the fertility desires of wives and husbands and the degree to which they are similar, including whether a preference for sons exists. We model the determinants of the desire to limit or space births, and estimate unmet need. Results indicate high levels of concurrence among husbands and wives on reproductive preferences. Where differences exist, husbands are more pronatalist than their wives. Both husbands and wives prefer to have sons and daughters, but more sons overall. Approximately 22% of wives and husbands desire to limit or space births but do not use contraception. More than half of wives and husbands with an unmet need for limiting are paired with a partner who has no such need. Three implications follow from these results: (1) differences in wives' and husbands' son and daughter preferences may help to explain discordant views among couples when it comes to the desire to limit or space births; (2) husbands' overall contribution to wives' unmet need can be substantial in African societies in the early stages of fertility transition; and (3) wives' preferences regarding children and contraception can result in unmet need on the part of husbands, even in highly gender-stratified societies where men are more pronatalist.  相似文献   
884.
Stewart SD 《Demography》2002,39(1):181-197
This article reports on a study of the effect of stepchildren (children from previous unions) on couples' fertility intentions and childbearing behavior using longitudinal data from the National Survey of Families and Households. The results indicated that stepchildren negatively affect childbearing intentions and childbearing risks. Intentions to have a child are weakened by one's own previous biological children and the previous biological children of one's current spouse or partner. This effect varies by the parenting configuration of the couple and gender of the respondent. Among couples with stepchildren, intentions remain high until each partner has had a biological child. Unlike women, men's previous biological children do not affect their intentions of having a child. Stepchildren exert a weak negative effect on couples' childbearing risks, and this effect is mediated by the couples' childbearing intentions. The findings suggest that stepchildren should be incorporated into future models of fertility.  相似文献   
885.
Van Hook J  Brown SL  Kwenda MN 《Demography》2004,41(4):649-670
Poverty levels among all children in the United States have tended to fluctuate in the past 30 years. However, among the children of immigrants, child poverty increased steadily and rapidly from about 12% in 1970 to 33% in the late 1990s before declining to about 21% in 2000. Using 1970, 1980, 1990, and 2000 Public Use Microdata Samples data, we identified key factors that underlie the fluctuations in immigrant child poverty from 1969 to 1999 and the divergence from children of natives. We found that roughly half the absolute increase in immigrant child poverty can be linked to changing conditions in the U.S. economy that make it more difficult to lift a family out of poverty than 30 years ago. These changes occurred disproportionately among children of parents with lower levels of education, employment, and U.S. experience but not among racial/ethnic minorities. Poverty risks among various racial and ethnic groups converged over time. The relative increase in poverty for immigrant versus native children owes largely to the divergence between immigrant and native families in racial/ethnic composition, parental education, and employment.  相似文献   
886.
Gender differences were examined in the identity processes of identity assimilation (maintaining identity despite age changes), identity accommodation (changing identity) and balance (using both processes) and in the relationship of these processes to self-esteem. We tested a community sample of 222 adults (131 females and 91 males) ranging from 40 to 84 years of age (M = 57.5, SD = 12.1). Analysis of variance yielded evidence showing greater use of identity accommodation for women. Identity accommodation was negatively associated with self-esteem for both genders, while identity assimilation was positively associated with self-esteem for women only. For both men and women, identity balance was positively related to self-esteem. Women's use of the identity processes in relation to self-esteem is discussed. Societal views on aging are suggested to impact women, such that they engage in identity accommodation while benefiting from identity assimilation. From these findings, it appears that examining the processes contributing to the maintenance of self-esteem may be a more useful approach to characterizing the aging process and gender differences than focusing on mean differences alone.  相似文献   
887.
888.
SHORT REVIEWS     
Books reviewed in this article: Kamran Asdar Ali, Planning the Family in Egypt: New Bodies, New Selves David I. Kertzer and Dominique Arel (EDS.), Census and Identity: The Politics of Race, Ethnicity, and Language in National Censuses Peter Lloyd‐Sherlock (ED.), Healthcare Reform and Poverty in Latin America Ishwar Modi (ED.), Ageing and Human Development: Global Perspectives United Nations Development Programme, Regional Bureau for Arab States, Arab Human Development Report 2002: Creating Opportunities for Future Generations United Nations Population Division, World Population Ageing 1950–2050 Jacques Vallin, France Meslé, and Tapani Valkonen (EDS.), Trends in Mortality and Differential Mortality Myron Weiner and Michael S. Teitelbaum, Political Demography, Demographic Engineering Zhang Weiguo, Economic Reforms and Fertility Behavior: A Study of a North Chinese Village  相似文献   
889.
This paper uses the NLSY-Child data to assess the effects on cognitive and social-emotional development of father care as a child care arrangement among children in two-parent families with working mothers. Our results show that father care for infants is no better or worse than other types of arrangements. However, toddlers in non-paternal modes of child care (e.g., relatives, family day care or center care) have slightly better cognitive outcomes than those whose fathers provided care. Although our analyses do not provide a definitive explanation for this finding, there is a substantial influx of fathers in our data who provide child care in years 2 and 3 and these fathers appear compositionally different from fathers who provided care during a child's infancy. In particular, there is some indication that these fathers who are newly providing care during a child's toddler years may be temporary care providers due to changing economic circumstances. The research was supported by NICHD grant #HD30944. Responsible editor: Deborah Cobb-Clark.  相似文献   
890.

Background

The pain experience associated with labour is complex. Literature indicates psychosocial and environmental determinants of labour pain, and yet methods to support women usually target physiological attributes via pharmacological interventions.

Aim

To provide an update of our understanding of labour pain based on modern pain science. The review aims to help explain why women can experience labour pain so differently — why some cope well, whilst others experience great suffering. This understanding is pertinent to providing optimal support to women in labour.

Method

A literature search was conducted in databases Medline, Cumulative Index to Nursing and Allied Health Literature and PsycINFO, using search terms labor/labour, childbirth, pain, experience and perception. Thirty-one papers were selected for inclusion.

Findings

Labour pain is a highly individual experience. It is a challenging, emotional and meaningful pain and is very different from other types of pain. Key determinants and influences of labour pain were identified and grouped into cognitive, social and environmental factors.

Conclusion

If a woman can sustain the belief that her pain is purposeful (i.e. her body working to birth her baby), if she interprets her pain as productive (i.e. taking her through a process to a desired goal) and the birthing environment is safe and supportive, it would be expected she would experience the pain as a non-threatening, transformative life event. Changing the conceptualisation of labour pain to a purposeful and productive pain may be one step to improving women’s experiences of it, and reducing their need for pain interventions.  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