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   42253篇
  免费   767篇
  国内免费   11篇
  2020年   213篇
  2019年   215篇
  2018年   3705篇
  2017年   3076篇
  2016年   2536篇
  2015年   419篇
  2014年   378篇
  2013年   1724篇
  2012年   1151篇
  2011年   2965篇
  2010年   2850篇
  2009年   1809篇
  2008年   2200篇
  2007年   2664篇
  2006年   523篇
  2005年   658篇
  2004年   608篇
  2003年   514篇
  2002年   520篇
  2001年   752篇
  2000年   797篇
  1999年   569篇
  1998年   276篇
  1997年   231篇
  1992年   448篇
  1991年   410篇
  1990年   449篇
  1989年   417篇
  1988年   403篇
  1987年   402篇
  1986年   406篇
  1985年   424篇
  1984年   334篇
  1983年   299篇
  1982年   237篇
  1981年   213篇
  1979年   388篇
  1978年   280篇
  1977年   252篇
  1976年   224篇
  1975年   341篇
  1974年   372篇
  1973年   353篇
  1972年   331篇
  1971年   285篇
  1970年   259篇
  1969年   321篇
  1968年   357篇
  1967年   324篇
  1966年   325篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
3.
4.
5.
Evaluated the effect of varied physician affect on subject recall, anxiety, and perceptions in a simulated tense and ambiguous medical situation. Forty women at risk for breast cancer viewed videotapes of an oncologist presenting--with either worried or nonworried affect--mammogram results. Although the mammogram results and the oncologist were the same in both presentation, analyses indicated that, compared to the women receiving the results from a nonworried physician, the women receiving the results from a worried physician recalled significantly less information, perceived the clinical situation as significantly more severe, reported significantly higher levels of state anxiety, and had significantly higher pulse rates. These results suggest that physician affect plays a critical role in patient reaction to medical information. Implications for compliance research, patient satisfaction, and physician training are discussed.  相似文献   
6.
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   
7.
8.
9.
10.
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