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   55977篇
  免费   2336篇
  国内免费   21篇
  2020年   679篇
  2019年   793篇
  2018年   1136篇
  2017年   1143篇
  2016年   1201篇
  2015年   858篇
  2014年   1041篇
  2013年   4842篇
  2012年   1938篇
  2011年   1935篇
  2010年   1162篇
  2009年   1184篇
  2008年   1667篇
  2007年   1632篇
  2006年   1501篇
  2005年   1242篇
  2004年   1283篇
  2003年   1229篇
  2002年   1166篇
  2001年   1928篇
  2000年   1799篇
  1999年   1344篇
  1998年   620篇
  1997年   540篇
  1996年   608篇
  1995年   551篇
  1994年   546篇
  1993年   528篇
  1992年   1108篇
  1991年   1022篇
  1990年   996篇
  1989年   961篇
  1988年   937篇
  1987年   868篇
  1986年   860篇
  1985年   908篇
  1984年   734篇
  1983年   627篇
  1982年   481篇
  1979年   760篇
  1978年   566篇
  1975年   604篇
  1974年   682篇
  1973年   707篇
  1972年   605篇
  1971年   561篇
  1970年   485篇
  1968年   609篇
  1967年   530篇
  1966年   506篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
181.
The present study demonstrates the safety and effectiveness of an outpatient program designed to respond to adolescent-precipitated crises by mobilizing and restructuring the family's kinship system. Families of 75 adolescents at risk for hospitalization were followed up to 24 months after treatment with Systemic Crisis Intervention. Measures of offspring and family functioning, suicidal behavior, institutional use, and treatment costs are presented. Results clearly demonstrate the safety, effectiveness, and economic viability of Systemic Crisis Intervention.  相似文献   
182.
HELM STIERLIN  M.D.  Ph.D. 《Family process》1988,27(2):121-127
Therapists have a mandate to bring about change, and family therapists appear to have unusual leverage to fullfill such a mandate, that is, to facilitate changes rapidly and effectively. Because and in spite of this mandate, the very notion of change deserves critical reflection. The history of ideas and our clinical experience teach us that changes may be problematic. They may come too fast or too slowly, may endure or fade away, may turn out to be desirable or undesirable, equitable or inequitable, and may, when further consequences and larger systems levels are taken into account, be beneficial or disastrous. This essay examines some of the problematical and contradictory aspects of change and delineates two perspectives on change--systemic optimism and systemic pessimism.  相似文献   
183.
184.
This paper combines the results of two studies across different cultures which included an investigation into the relationship between field-dependence-independence and vocational orientations within the framework of Holland's theory of career choice and Witkin's theory of psychological differentiation. The samples included 179 Canadian senior high school students and 376 Pakistani college and university students. Both samples were administered Self-Directed Search and Group Embedded Figures Test. The results indicated a significant relationship between cognitive styles and vocational orientations. It was evident from the findings of these two studies that the theories of Holland and Witkin dove-tail nicely with each other.  相似文献   
185.
Depressed affect and time perception   总被引:1,自引:0,他引:1  
  相似文献   
186.
187.
188.
189.
The structure of the covariance matrix of sample covariances under the class of linear latent variate models is derived using properties of cumulants. This is employed to provide a general framework for robustness of statistical inference in the analysis of covariance structures arising from linear latent variate models. Conditions for normal theory estimators and test statistics to retain each of their usual asymptotic properties under non-normality of latent variates are given. Factor analysis, LISREL and other models are discussed as examples.  相似文献   
190.
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