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   1801篇
  免费   78篇
管理学   228篇
民族学   9篇
人口学   178篇
丛书文集   11篇
理论方法论   198篇
综合类   8篇
社会学   1030篇
统计学   217篇
  2023年   8篇
  2021年   12篇
  2020年   22篇
  2019年   51篇
  2018年   58篇
  2017年   78篇
  2016年   63篇
  2015年   39篇
  2014年   48篇
  2013年   315篇
  2012年   65篇
  2011年   71篇
  2010年   46篇
  2009年   49篇
  2008年   55篇
  2007年   50篇
  2006年   54篇
  2005年   38篇
  2004年   49篇
  2003年   43篇
  2002年   48篇
  2001年   42篇
  2000年   38篇
  1999年   35篇
  1998年   32篇
  1997年   32篇
  1996年   34篇
  1995年   21篇
  1994年   27篇
  1993年   22篇
  1992年   24篇
  1991年   30篇
  1990年   28篇
  1989年   17篇
  1988年   17篇
  1987年   12篇
  1986年   13篇
  1985年   27篇
  1984年   20篇
  1983年   16篇
  1982年   18篇
  1981年   8篇
  1980年   16篇
  1979年   12篇
  1978年   8篇
  1977年   11篇
  1976年   12篇
  1974年   8篇
  1970年   5篇
  1968年   5篇
排序方式: 共有1879条查询结果,搜索用时 15 毫秒
131.
132.
133.
The authors identified the number, type, and frequency of protective behaviors that undergraduate college students who consume alcohol use to prevent alcohol-related consequences. Their hypothesis was that students who engage in more types of protective behaviors with greater frequency would be less likely to experience alcohol-related consequences. Participants consisted of a randomly selected sample of 1,355 undergraduates aged 18 years and older at a large public university. Students completed a mailed questionnaire on alcohol and health behaviors in spring 2002. The findings (after adjustment for covariates) indicated that self-protective behaviors are inversely associated with alcohol-related problems for women but not for men. The influences of gender and racial and ethnic differences are considered in relation to prevention and intervention programs aimed at reducing alcohol-related consequences on college campuses.  相似文献   
134.
135.
136.
An increasing body of evidence now suggests the involvement of mitochondrial abnormalities in the etiology of neurodegenerative diseases, such as Parkinson's disease (PD) and Alzheimer disease. In this Perspective, we describe a recent study that shows that treatment of human patients with the antioxidant coenzyme Q(10'), which functions in concert with certain mitochondrial enzymes, reduced the worsening of symptoms associated with PD. These findings are consistent with the hypothesis that mitochondrial dysfunction plays a role in the pathogenesis of PD and that treatments that target mitochondrial biochemistry might ameliorate the functional decline observed in patients suffering from PD.  相似文献   
137.
Smith SK  Tayman J 《Demography》2003,40(4):741-757
A number of studies have evaluated the accuracy of projections of the size of the total population, but few have considered the accuracy of projections by age group. For many purposes, however, the relevant variable is the population of a particular age group, rather than the population as a whole. We investigated the precision and bias of a variety of age-group projections at the national and state levels in the United States and for counties in Florida. We also compared the accuracy of state and county projections that were derived from full-blown applications of the cohort-component method with the accuracy of projections that were derived from a simpler, less data-intensive version of the method. We found that age-group error patterns are different for national projections than for subnational projections; that errors are substantially larger for some age groups than for others; that differences in errors among age groups decline as the projection horizon becomes longer; and that differences in methodological complexity have no consistent impact on the precision and bias of age-group projections.  相似文献   
138.
Smith BD 《Child welfare》2003,82(3):335-365
This study uses Cox regression to assess the relationships among parental drug use, drug treatment compliance, and reunification from substitute care. The study finds that drug treatment compliance is associated with faster reunification, even when accounting for ongoing drug use and three parenting measures. The findings are consistent with a conceptual framework suggesting that certain client actions, such as drug treatment compliance, may serve as markers that substantially affect client outcomes.  相似文献   
139.
The authors explored the differences between African American and White college students' drinking behaviors and their attitudes toward consequences, harm-reduction strategies, and health information sources. They collected data from a randomly selected sample of 1,110 students in a large public university to examine the effects of a high-risk drinking prevention intervention. In the current analysis, they compared African American and White students on indicators of high-risk drinking, drinking consequences, harm-reduction strategies, the sources that students typically used for health information, and the believability of those sources. The African American students scored lower on drinking measures than the White students did, reported fewer negative consequences, and more regularly employed drinking-reduction strategies, with one exception--choosing a designated driver. Both African and White respondents reported that their parents were their most frequent and usual sources of health-related information and said that parents and health professionals were the most credible sources.  相似文献   
140.
In his analysis of football hooliganism, Anthony King claims to reveal the historical, conceptual scheme young, male supporters draw upon. This 'masculine vision', he states, is similar to that held by the Freikorps. Both groups are said to adhere to modernist notions of masculinity, sexuality and nationhood, reinforced by rituals which maintain boundaries between these 'proper' males and deviant 'others'. Occasionally, football hooligans breach these boundaries in acts of postmodern transgression. King also claims that fans link sex and violence in their imaginations. In this response I examine King's critique of his fellow theorists; challenge his 'Freikorps-Fans' analogy; demonstrate the problem he has in establishing the sex-violence link and question the relevance of his concept of postmodernity.  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