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   78080篇
  免费   3170篇
  国内免费   49篇
  81299篇
  2020年   873篇
  2019年   1090篇
  2018年   1542篇
  2017年   1532篇
  2016年   1636篇
  2015年   1107篇
  2014年   1366篇
  2013年   6629篇
  2012年   2481篇
  2011年   2623篇
  2010年   1566篇
  2009年   1624篇
  2008年   2339篇
  2007年   2317篇
  2006年   2064篇
  2005年   1836篇
  2004年   1826篇
  2003年   1640篇
  2002年   1711篇
  2001年   2512篇
  2000年   2448篇
  1999年   1869篇
  1998年   942篇
  1997年   829篇
  1996年   765篇
  1995年   774篇
  1993年   752篇
  1992年   1495篇
  1991年   1404篇
  1990年   1376篇
  1989年   1265篇
  1988年   1243篇
  1987年   1173篇
  1986年   1185篇
  1985年   1269篇
  1984年   1025篇
  1983年   899篇
  1982年   738篇
  1979年   1037篇
  1978年   773篇
  1976年   728篇
  1975年   877篇
  1974年   1011篇
  1973年   989篇
  1972年   886篇
  1971年   776篇
  1969年   726篇
  1968年   917篇
  1967年   869篇
  1966年   784篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
11.
12.
13.
The authors tested effects of a 10-week group cognitive-behavioral stress management intervention among 100 women newly treated for Stage 0-II breast cancer. The intervention reduced prevalence of moderate depression (which remained relatively stable in the control condition) but did not affect other measures of emotional distress. The intervention also increased participants' reports that having breast cancer had made positive contributions to their lives, and it increased generalized optimism. Both remained significantly elevated at a 3-month follow-up of the intervention. Further analysis revealed that the intervention had its greatest impact on these 2 variables among women who were lowest in optimism at baseline. Discussion centers on the importance of examining positive responses to traumatic events--growth, appreciation of life, shift in priorities, and positive affect-as well as negative responses.  相似文献   
14.
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   
15.
16.
17.
18.
19.
20.
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   
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