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   42646篇
  免费   1613篇
  国内免费   18篇
  2020年   459篇
  2019年   592篇
  2018年   814篇
  2017年   867篇
  2016年   875篇
  2015年   616篇
  2014年   749篇
  2013年   3321篇
  2012年   1416篇
  2011年   1391篇
  2010年   886篇
  2009年   856篇
  2008年   1244篇
  2007年   1259篇
  2006年   1122篇
  2005年   1004篇
  2004年   950篇
  2003年   876篇
  2002年   922篇
  2001年   1340篇
  2000年   1293篇
  1999年   987篇
  1998年   427篇
  1997年   421篇
  1996年   397篇
  1995年   399篇
  1993年   392篇
  1992年   831篇
  1991年   748篇
  1990年   798篇
  1989年   694篇
  1988年   713篇
  1987年   674篇
  1986年   692篇
  1985年   631篇
  1984年   582篇
  1983年   553篇
  1979年   646篇
  1978年   464篇
  1977年   399篇
  1975年   510篇
  1974年   573篇
  1973年   612篇
  1972年   458篇
  1971年   444篇
  1970年   419篇
  1969年   471篇
  1968年   564篇
  1967年   504篇
  1966年   431篇
排序方式: 共有10000条查询结果,搜索用时 750 毫秒
961.
962.
963.
964.
965.
The study attempted to isolate some of the environmental conditions that controlled the self-destructive behavior of three severely retarded and psychotic children. In the extinction study subjects were placed in a room where they were allowed to hurt themselves, isolated from interpersonal contact. They eventually ceased to hurt themselves in that situation, the rate of self-destruction falling gradually over successive days. In the punishment study, subjects were administered painful electric shock contingent on the self-destructive behavior. (1) The self-destructive behavior was immediately suppressed. (2) The behavior recurred when shock was removed. (3) The suppression was selective, both across physical locales and interpersonal situations, as a function of the presence of shock. (4) Generalized effects on other, non-shock behaviors, appeared in a clinically desirable direction. Finally, a study was reported where self-destructive behavior increased when certain social attentions were given contingent upon that behavior.  相似文献   
966.
The experiences of the placement department of the Mental Health and Manpower Project have demonstrated that an effective team can be created to develop job opportunities for the mentally restored psychiatric patient. Composed of a vocational counselor and a placement counselor, the team is effective in securing meaningful employment and developing re-education programs in the community. While the vocational counselor provides the clinical information concerning the restored patient-client, the placement counselor serves as a more personnel oriented individual in finding the appropriate kind of employment position. The team points to the potential that the mental health center possesses in involving the general community in its programs.  相似文献   
967.
A study was designed to compare several variables of Manpower Development Training Act (MDTA) clients who dropped out of the program with those of clients who completed the program. A random sample of application cards was drawn for individuals enrolled in MDTA adult classes in Milwaukee, Wisconsin. Trainees who completed the program were more likely to be married, older, characterized by a more stable employment history prior to entering the program, and slightly more educated than were program dropouts. Clients who completed the program versus those who did not were not significantly different on the following variables: (1) sex; (2) counseling versus no counseling; (3) race; and (4) client reported physical disability.  相似文献   
968.
969.
970.
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