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   554篇
  免费   5篇
管理学   87篇
民族学   3篇
人口学   48篇
丛书文集   5篇
理论方法论   47篇
综合类   1篇
社会学   277篇
统计学   91篇
  2020年   7篇
  2019年   8篇
  2018年   12篇
  2017年   10篇
  2016年   5篇
  2014年   13篇
  2013年   70篇
  2012年   17篇
  2011年   18篇
  2010年   18篇
  2009年   8篇
  2008年   17篇
  2007年   19篇
  2006年   13篇
  2005年   12篇
  2004年   12篇
  2003年   15篇
  2002年   20篇
  2001年   15篇
  2000年   13篇
  1999年   16篇
  1998年   11篇
  1997年   6篇
  1996年   7篇
  1995年   6篇
  1994年   11篇
  1993年   12篇
  1992年   13篇
  1991年   19篇
  1990年   6篇
  1989年   4篇
  1988年   7篇
  1987年   7篇
  1986年   4篇
  1985年   9篇
  1984年   7篇
  1983年   10篇
  1982年   9篇
  1981年   8篇
  1980年   5篇
  1979年   5篇
  1978年   6篇
  1977年   4篇
  1976年   8篇
  1975年   8篇
  1974年   4篇
  1973年   5篇
  1971年   2篇
  1969年   4篇
  1968年   3篇
排序方式: 共有559条查询结果,搜索用时 15 毫秒
241.
242.
The purpose of this study was to extend current research to examine the relationship between parenting style combinations and adolescent emotional/behavioral outcomes to further understand affective functioning in adolescents. Previous research solely analyzed mothers, without including fathers and/or both parents. The roles of temperament and adolescent and parent gender were also examined. Participants were 12- to 18-year-old students (n = 195) in 7th to 11th grade in a rural school district in southeast Michigan. Temperament characteristics (i.e., mood, flexibility-rigidity, and eating rhythmicity) explained nearly half of the variance in adolescent outcomes. Parenting styles contributed a smaller but significant role. When both parents were authoritative, it was associated with more optimal outcomes in adolescents' personal adjustment than any other parenting style combination. Having one authoritative parent, which was expected to be a protective factor, was related to high personal adjustment for girls but higher levels of school maladjustment for boys. Mixed associations were found for parenting style combinations and adolescent outcomes. Overall, when both parents were permissive and neglectful, these parenting styles were associated with poorer adolescent outcomes. Study findings confirm that parenting style patterns are important; however, adolescent temperament plays a much larger role, overall, in adolescent affective functioning.  相似文献   
243.
This paper studies endogenous risk‐taking by embedding a concern for status (relative consumption) into an otherwise conventional model of economic growth. We prove that if the intertemporal production function is strictly concave, an equilibrium must converge to a unique steady state in which there is recurrent endogenous risk‐taking. (The role played by concavity is clarified by considering a special case in which the production function is instead convex, in which there is no persistent risk‐taking.) The steady state is fully characterized. It displays features that are consistent with the stylized facts that individuals both insure downside risk and gamble over upside risk, and it generates similar patterns of risk‐taking and avoidance across environments with quite different overall wealth levels. Endogenous risk‐taking here is generally Pareto‐inefficient. A concern for status thus implies that persistent and inefficient risk‐taking hinders the attainment of full equality.  相似文献   
244.
Four stabbings to death in a single day. Ninety murders in 7 months. Shocking figures—or are they? Knife crime makes the headlines almost daily but are Londoners really at increased risk of being murdered? David Spiegelhalter and Arthur Barnett investigate—and find a predictable pattern of murder.  相似文献   
245.
246.
Increasing recognition of cultural influences on career development requires expanded theoretical and practical perspectives. Theories of career development need to explicate views of culture and provide direction for career counseling with clients who are culturally diverse. The Systems Theory Framework (STF) is a theoretical foundation that accounts for systems of influence on people's career development, including individual, social, and environmental/societal contexts. The discussion provides a rationale for systemic approaches in multicultural career counseling and introduces the central theoretical tenets of the STF. Through applications of the STF, career counselors are challenged to expand their roles and levels of intervention in multicultural career counseling.  相似文献   
247.
248.
249.
In the context of linear regression with dependent and nonstationary errors, the classical moving-block bootstrap (MBB) fails to capture the nonstationarity of the errors. A new bootstrap procedure called the blocking external bootstrap (BEB) is proposed to overcome the problem. The consistency of the BEB in estimating the variance of the least-squares estimator is studied in the case of α-mixing and nonstationary sequence of errors. It is shown that the BEB only achieves partial correction if the block size is fixed. Complete consistency is achieved by the BEB when the block size is allowed to go to infinity. We also study the first-order consistency of the least squares estimator based on the BEB. A simulation study is carried out to assess the performance of the BEB versus the MBB in estimating the variance of the least-squares estimator. Finally, some open problems are discussed.  相似文献   
250.
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