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   49343篇
  免费   1740篇
  国内免费   23篇
  2019年   479篇
  2018年   637篇
  2017年   694篇
  2016年   768篇
  2015年   573篇
  2014年   687篇
  2013年   3621篇
  2012年   1211篇
  2011年   1293篇
  2010年   820篇
  2009年   813篇
  2008年   1226篇
  2007年   1108篇
  2006年   1022篇
  2005年   933篇
  2004年   887篇
  2003年   925篇
  2002年   946篇
  2001年   1294篇
  2000年   1276篇
  1999年   947篇
  1998年   506篇
  1997年   515篇
  1996年   482篇
  1992年   915篇
  1991年   854篇
  1990年   878篇
  1989年   845篇
  1988年   803篇
  1987年   791篇
  1986年   851篇
  1985年   876篇
  1984年   755篇
  1983年   690篇
  1982年   519篇
  1981年   570篇
  1979年   813篇
  1978年   631篇
  1977年   557篇
  1976年   556篇
  1975年   720篇
  1974年   858篇
  1973年   901篇
  1972年   718篇
  1971年   726篇
  1970年   681篇
  1969年   711篇
  1968年   890篇
  1967年   816篇
  1966年   818篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
181.
182.
183.
184.
185.
The Family System Functioning (FSF) scale is a new instrument for measuring dimensions of the intrafamilial environment thought to be important in recovery from major psychiatric illness. Modest statistical correlations were obtained when FSF ratings of laboratory-based family interactions were compared with researcher-guided therapist ratings of FSF based upon the family's behavior in family therapy sessions during the subsequent month. The data from these two settings provide support for the validity of some of the scales. Because of the modest size of the correlations, however, behavior in the laboratory setting may not always be an accurate indicator of how the family will behave in the early weeks of family therapy.  相似文献   
186.
Through school-sponsored health fairs, 398 adolescents (153 males and 245 females) between the ages of 14 and 18 completed a questionnaire on their compliance with six of the U.S. Dietary Guidelines. Results indicated that adolescents report highest compliance on "eat a variety of foods" and "eat foods with adequate starch and fiber." Conversely, they indicated low compliance on "reduce sugar intake" and "reduce fat, saturated fat and cholesterol intake." Sex differences were noted on two dietary guidelines. Females reported lower compliance with respect to "maintain desirable body weight." Males, on the other hand, reported lower compliance than females on "reduce salt intake." Given the fact that the dietary guidelines of "reduce fat, saturated fat and cholesterol," "maintain desirable body weight," and "reduce salt intake" are all aimed at reducing cardiovascular risk, the low compliance reported by adolescents may have long-range health implications.  相似文献   
187.
188.
189.
Connectionism and cognitive architecture: a critical analysis   总被引:54,自引:0,他引:54  
J A Fodor  Z W Pylyshyn 《Cognition》1988,28(1-2):3-71
  相似文献   
190.
A longitudinal design was employed to test the main and stress-moderating effects of young adolescents' perceived family environment (Family Environment Scales; FES; Moos & Moos, 1981) on their depression, anxiety, and self-esteem. This study was part of a larger longitudinal project (L. Cohen, Burt, & Bjorck, 1987) that demonstrated the significant cross-sectional effects of the young adolescents' controllable and uncontrollable negative events, and the significant longitudinal effects of the former. The present cross-sectional analyses demonstrated the hypothesized main effects of the FES scores; families perceived as cohesive, organized, and expressive were related to positive psychological functioning, whereas families perceived as conflict-ridden and controlling were related to negative functioning. However, in general these effects were nonsignificant in the longitudinal analyses. Although there were a number of significant Negative Events x FES interactions, in no instance did the pattern support the hypothesized stress-buffering role of positive family climate.  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