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   70777篇
  免费   2086篇
  国内免费   30篇
  72893篇
  2020年   587篇
  2019年   745篇
  2018年   4238篇
  2017年   3571篇
  2016年   3149篇
  2015年   923篇
  2014年   984篇
  2013年   4585篇
  2012年   2157篇
  2011年   4005篇
  2010年   3395篇
  2009年   2424篇
  2008年   3191篇
  2007年   3578篇
  2006年   1436篇
  2005年   1494篇
  2004年   1415篇
  2003年   1245篇
  2002年   1235篇
  2001年   1778篇
  2000年   1693篇
  1999年   1274篇
  1998年   683篇
  1997年   585篇
  1996年   522篇
  1995年   516篇
  1994年   497篇
  1993年   515篇
  1992年   1008篇
  1991年   953篇
  1990年   946篇
  1989年   849篇
  1988年   813篇
  1987年   805篇
  1986年   804篇
  1985年   854篇
  1984年   668篇
  1983年   577篇
  1982年   470篇
  1979年   654篇
  1978年   486篇
  1976年   447篇
  1975年   590篇
  1974年   619篇
  1973年   594篇
  1972年   540篇
  1971年   473篇
  1968年   539篇
  1967年   540篇
  1966年   475篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
11.
This study examined individuals' tendencies to migrate from one organization to another (i.e., the propensity to switch employers). Previous researchers have suggested that switching organizations throughout the career span may be partially heritable and therefore related to individual differences in personality traits. If personality traits are indeed related to a tendency to turnover from organizations, this suggests that current procedures for calculating utility may be inaccurate. Using a database of 1081 individuals who have been in the workforce for several years, results indicated that personality traits measured by the Occupational Personality Questionnaire (non‐ipsative; OPQn) were modestly related to organization switching (i.e., repeated moves from organization to organization). We found that higher scores on extraversion, openness to experience, and conscientiousness‐related traits were modestly correlated with more frequent organization switching. However, we demonstrate that these modest relationships can produce large inaccuracies in utility estimates.  相似文献   
12.
13.
14.
15.
16.
17.
OBJECTIVE: To test a theoretical model of how ethnic pride and self-control are related to risk and protective factors. DESIGN: A community sample of 670 African American youth (mean age = 11.2 years) were interviewed in households. MAIN OUTCOME MEASURES: Measures of cigarette smoking, alcohol use, and sexual behavior (lifetime to past month). RESULTS: Structural modeling analyses indicated parenting was related to self-control and self-esteem, and racial socialization was related to ethnic pride. Self-control and self-esteem variables were related to levels of deviance-prone attitudes and to perceptions of engagers in, or abstainers from, substance use and sexual behavior. The proximal factors (behavioral willingness, resistance efficacy, and peer behavior) had substantial relations to the criterion variables. Participant gender and parental education also had several paths in the model. Results were generally similar for the 2 outcome behaviors. CONCLUSIONS: In this population, self-esteem and self-control are related to parenting approaches and have pathways to attitudes and social perceptions that are significant factors for predisposing to, or protecting against, early involvement in substance use and sexual behavior.  相似文献   
18.
19.
20.
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