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   535篇
  免费   40篇
管理学   60篇
民族学   5篇
人才学   1篇
人口学   42篇
丛书文集   2篇
理论方法论   68篇
综合类   2篇
社会学   336篇
统计学   59篇
  2024年   1篇
  2023年   10篇
  2022年   8篇
  2021年   7篇
  2020年   17篇
  2019年   23篇
  2018年   30篇
  2017年   29篇
  2016年   32篇
  2015年   28篇
  2014年   29篇
  2013年   107篇
  2012年   28篇
  2011年   32篇
  2010年   15篇
  2009年   23篇
  2008年   19篇
  2007年   16篇
  2006年   14篇
  2005年   13篇
  2004年   6篇
  2003年   6篇
  2002年   9篇
  2001年   9篇
  2000年   7篇
  1999年   3篇
  1998年   1篇
  1997年   3篇
  1996年   2篇
  1994年   5篇
  1993年   2篇
  1992年   4篇
  1991年   7篇
  1990年   2篇
  1989年   3篇
  1988年   1篇
  1987年   3篇
  1986年   3篇
  1984年   2篇
  1983年   2篇
  1982年   1篇
  1981年   2篇
  1980年   2篇
  1978年   1篇
  1977年   2篇
  1975年   1篇
  1974年   1篇
  1973年   2篇
  1972年   1篇
  1968年   1篇
排序方式: 共有575条查询结果,搜索用时 65 毫秒
1.
Presidential elections are often seen as referendums on the health of the economy; however, little evidence exists on the president's ability to influence gross domestic product (GDP). This study examines the effect of the incentive to be reelected and the resulting increase in presidential effort on GDP growth. Growth is found to rise in reelection years for first‐term presidents after 1932 and to fall in election years before 1932, when reelection was uncommon, and for second‐term presidents generally. This effect is largest for high‐quality presidents—who probably have the highest return to effort—and is spread across multiple sectors of the economy. (JEL D78, D72, E32, J24)  相似文献   
2.
3.
4.
In non-experimental research, data on the same population process may be collected simultaneously by more than one instrument. For example, in the present application, two sample surveys and a population birth registration system all collect observations on first births by age and year, while the two surveys additionally collect information on women’s education. To make maximum use of the three data sources, the survey data are pooled and the population data introduced as constraints in a logistic regression equation. Reductions in standard errors about the age and birth-cohort parameters of the regression equation in the order of three-quarters are obtained by introducing the population data as constraints. A halving of the standard errors about the education parameters is achieved by pooling observations from the larger survey dataset with those from the smaller survey. The percentage reduction in the standard errors through imposing population constraints is independent of the total survey sample size.  相似文献   
5.
6.
A fact-gathering, experimental game proved to be an effective instrument in the needs assessment phase of an adolescent sexuality educational program aimed at low-income females. The game ("Family Few"), which covered the topics of menstruation and reproduction, was played by 35 Black, Hispanic, and white females aged 13-16 years recruited from medical and psychiatric clinics in Miami, Florida. The goals of the game were to elicit terminology used by participants, identify and correct misconceptions and misinformation, and determine if learning could occur. Although 57% of participants reported prior exposure to formal sex education, misinformation about the need for activity curtailment during menstruation and the importance of early pregnancy detection was widespread. Group members believed they needed to restrict activities involving physical exercise, sexual relations, water, and cold during menses and were not likely to seek medical or family consultation regarding a missed period until the end of the 1st trimester of pregnancy. Also evident was a need for accurate information on the side effects, risk factors, benefits, and effectiveness of contraceptive methods. The group responses enabled the sex educators to prepare a culturally responsive, developmentally oriented curriculum for further work with disadvantaged female adolescents. The group process was ranked highly on the Likert Scale by these teenagers as an enjoyable, useful means of information dissemination and problem solving.  相似文献   
7.
8.
9.
Fabrizi  Simona  Lippert  Steffen  Pan  Addison  Ryan  Matthew 《Theory and Decision》2022,93(3):399-425
Theory and Decision - We examine collective decision-making in a jury voting game under the unanimity rule when voters have ambiguous beliefs. Unlike in existing studies (Ellis in Theoretical...  相似文献   
10.
Clinical Social Work Journal - Experiences with more subtle racism – which have been called microaggressions – have a host of negative effects on health, mental health, educational...  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