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   174531篇
  免费   7839篇
  国内免费   159篇
  182529篇
  2021年   1539篇
  2020年   2857篇
  2019年   3526篇
  2018年   3600篇
  2017年   4062篇
  2016年   4736篇
  2015年   4005篇
  2014年   4898篇
  2013年   23894篇
  2012年   4734篇
  2011年   3814篇
  2010年   3984篇
  2009年   4898篇
  2008年   4024篇
  2007年   3608篇
  2006年   4149篇
  2005年   4106篇
  2004年   3667篇
  2003年   3283篇
  2002年   3061篇
  2001年   3201篇
  2000年   3050篇
  1999年   3091篇
  1998年   2867篇
  1997年   2704篇
  1996年   2593篇
  1995年   2449篇
  1994年   2426篇
  1993年   2371篇
  1992年   2532篇
  1991年   2419篇
  1990年   2231篇
  1989年   2162篇
  1988年   2170篇
  1987年   2185篇
  1986年   2147篇
  1985年   2358篇
  1984年   2522篇
  1983年   2281篇
  1982年   2389篇
  1981年   2355篇
  1980年   2189篇
  1979年   2195篇
  1978年   2168篇
  1977年   2131篇
  1976年   1943篇
  1975年   1951篇
  1974年   2040篇
  1973年   1897篇
  1972年   1478篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
221.
222.
223.
224.
The principles, design considerations, and components of a clinical information system intended to support and enhance the patient care, educational, and research missions of a comprehensive psychiatric institute are presented. Major characteristics of the system are its emphases on efficiency, simplicity, and intensive user involvement throughout the development of the system.  相似文献   
225.
Introduction     
Knowledge, Technology &; Policy -  相似文献   
226.
227.
This study provides evidence that the effects of perceived pervasive discrimination may be dynamic over time. It was expected that participants who perceived discrimination to be highly pervasive would initially be more likely to engage in inactive coping strategies than those who perceived low pervasiveness; however, those who continued to perceive high pervasiveness over time were expected ultimately to engage in more active strategies than those perceiving low pervasiveness. Using a 28-day diary, women and ethnic minorities described their daily experiences of discrimination and indicated their appraisals of its pervasiveness as well as their coping strategies. Results showed that participants who initially perceived low pervasiveness reported more active coping and religion use as well as less behavioral disengagement than those initially perceiving high pervasiveness. However, this pattern was reversed by the end of the study. Implications for integrating time into the assessment of coping with discrimination are discussed.  相似文献   
228.
Adherence to medications for chronic pediatric diseases decreases overtime. This randomized controlled trial evaluated a clinic-based, nurse-administered educational and behavioral intervention to prevent the anticipated drop in adherence to nonsteroidal medications among newly diagnosed patients with juvenile rheumatoid arthritis. Thirty-four participants completed the study (mean age = 8.44 years, SD = 3.96), including 19 in the experimental group and 15 in the standard-treatment (education) control group. There were significant group and Group x Time effects for adherence (assessed with an electronic monitor over a 13-month period) favoring the experimental group. In contrast, the groups did not differ significantly in disease activity or functional limitations. Factors that may have prevented detection of differences in these health parameters are dicussed.  相似文献   
229.
Brain lateralization research has led to speculation about counseling and guidance implications of left-right brain differences. Serious limitations in these implications are highlighted.  相似文献   
230.
A scale assessing generalized false self‐perceptions (Perceptions of False Self, POFS) was developed and tested across three studies involving a total of 331 adolescents (11–16 years). In Study 1, interviews were conducted to develop items for the scale. In Study 2, psychometric techniques were used to derive a scale composed of 16 items. Study 2 also assessed the validity of the scale: depressive symptoms were found to increase POFS across 10 weeks, whereas false self‐perceptions had a reciprocal effect on anxiety. In Study 3, the convergent validity of the POFS scale was established. Overall, the evidence suggests that the POFS scale is a reliable and valid measure of generalized false self‐perceptions.  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