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   60548篇
  免费   2400篇
  国内免费   23篇
  2020年   646篇
  2019年   745篇
  2018年   1166篇
  2017年   1125篇
  2016年   1221篇
  2015年   866篇
  2014年   997篇
  2013年   5695篇
  2012年   1833篇
  2011年   1901篇
  2010年   1205篇
  2009年   1053篇
  2008年   1637篇
  2007年   1542篇
  2006年   1391篇
  2005年   1232篇
  2004年   1086篇
  2003年   1107篇
  2002年   1101篇
  2001年   1814篇
  2000年   1753篇
  1999年   1338篇
  1998年   590篇
  1996年   693篇
  1995年   650篇
  1994年   612篇
  1993年   585篇
  1992年   1283篇
  1991年   1184篇
  1990年   1167篇
  1989年   1055篇
  1988年   1076篇
  1987年   1009篇
  1986年   1022篇
  1985年   1005篇
  1984年   875篇
  1983年   734篇
  1981年   593篇
  1979年   873篇
  1978年   660篇
  1975年   770篇
  1974年   818篇
  1973年   903篇
  1972年   811篇
  1971年   741篇
  1970年   691篇
  1969年   649篇
  1968年   845篇
  1967年   715篇
  1966年   683篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
The theoretical basis for the repetition of themes in related groups is addressed by describing similar processes in four systems: inpatient psychiatric ward, inpatient psychotherapy group, supervisory group, and group psychotherapy division. The principles of general system theory help explain process parallels in allied groups and illuminate group process.  相似文献   
992.
To evaluate expectations derived from ego-identity theory and symbolic-interaction theories about the association between self-concept and peer-group affiliations in adolescence, we examined the self-esteem of 221 7th through 12th graders associated by peers with one of five major school crowds and 106 students relatively unknown by classmates and not associated with any school crowd. Among crowd members, self-esteem was directly related to the position of one's crowd in the peer-group status hierarchy (based on both peer-rated and self-perceived crowd affiliation). Outsiders' self-esteem differed in relation to the accuracy of their reflected appraisal of and the salience they attached to crowd affiliation. Crowd members as a whole exhibited higher self-esteem than outsiders as a whole. Differences, however, were mediated by crowd status, salience of crowd affiliation, and the accuracy of reflected appraisals. An adequate interpretation of the findings required an integration of Festinger's (1954, 1957) social comparisons and cognitive-dissonance theories, Cooley's (1902) notions of reflected appraisal, and Newman and Newman's (1976) extrapolations from ego-identity theory.  相似文献   
993.
994.
995.
The results of an evaluation of the perfusion scintigraphy findings of 350 hospitalised neurological patients and 55 more strictly selected neurosurgical patients with cerebrovascular complaints, revealed an accuraty of 83%, a sensitivity of 89%, and a specificity of 83%. The selection of the patients had no influence on the results as a whole. Compared with contrast-medium angiography, incorrect diagnosis must be expected in 17% of the cases. This includes erroneous negative findings in 10% of the cases. Grounds for misinterpretations are suggested, and the biological and methodological limitations of the method are set forth.  相似文献   
996.
The use of computer based diagnostic decision and artificial intelligence are discussed in relation to the problems of validity and reliability of psychiatric diagnoses. The authors suggest a definition of a computer aided classificator as an existent decision system for an automatically analysis of findings.  相似文献   
997.
This article attempts to apply a theory of aggression as motivation to overcome obstacles to the understanding of phobic states and their formation. The role of aggression in the genesis of phobic conditions is discussed, and the traditional analytic view of aggression as instinctual drive is contrasted with a motivational approach. The motivational view offers the advantage of a clearer understanding of the stimulus contexts, representational connections, and both real and imaginary object connections that are lacking in the more traditional understanding of aggression as a biological drive.  相似文献   
998.
This paper is an examination of the long-term parenting experiences of parents who have given birth to CNS damaged infants. In particular, the focus is on the mourning, regression, rage, and depression that frequently attend these parents throughout their lives and can become pathological and pathogenic interferences with the provision of good-enough parenting. Several clinical vignettes were presented, each of which illustrated the usefulness of different psychoanalytic clinical theories about normality and pathology of parenting and parent-child interaction. The now-classical contribution of Solnit and Stark (Mourning and the Birth of a Defective Child, 1962) is reviewed along with Benedek's and others' psychoanalytic theories about normal parenting. The thinking of these writers is within the framework of structural/libidinal theory and seems to be useful in describing certain parenting problems that concern the mourning and regressive aspects of parenting. However, it was proposed that some of the adaptive coping and pathology encompassed by Solnit and Stark's explanations is not comfortably illuminated by the structural clinical theory of conflict and drives. Freud's discussion (1917) compares mourning and melancholia, which he differentiated as related but dynamically distinct clinical phenomena. This work is briefly recalled as an earlier point in theory building where structural theory was not sufficient to explain clinical depression and rage that exceeds normal mourning (as in Freud's melancholia). It is felt that an additional theoretical perspective on parenting provided by self psychology can fill in some of the gaps left by structural theory explanations. The self psychology perspective is particularly helpful with understanding the rage, ambivalence, and chronic depression often experienced by parents of damaged children. According to this perspective, the damaged child is a disappointing selfobject for the parent, and the parent's self organization will give him the resources to cope adaptively or to develop narcissistic pathology. Three types of intrapsychic problems for a parent are described: mourning the lost object, the fantasied perfect child; experiencing and recovering from regression to early identifications with his own parents; withstanding tension and regulating one's self (experiencing chronic depression and rage) when confronted with a great disappointment in a selfobject (represented by the damaged child). It is important when designing intervention strategies in a hospital or pediatric clinic setting to clarify which type of problem is the major focus of the parent's struggle.(ABSTRACT TRUNCATED AT 400 WORDS)  相似文献   
999.
1000.
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