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   85671篇
  免费   3474篇
  国内免费   37篇
  2020年   1013篇
  2019年   1210篇
  2018年   1688篇
  2017年   1776篇
  2016年   1821篇
  2015年   1304篇
  2014年   1574篇
  2013年   7201篇
  2012年   2893篇
  2011年   2897篇
  2010年   1795篇
  2009年   1802篇
  2008年   2549篇
  2007年   2554篇
  2006年   2287篇
  2005年   1971篇
  2004年   1957篇
  2003年   1856篇
  2002年   1820篇
  2001年   2749篇
  2000年   2580篇
  1999年   1978篇
  1998年   934篇
  1997年   843篇
  1996年   887篇
  1995年   832篇
  1994年   806篇
  1993年   815篇
  1992年   1652篇
  1991年   1500篇
  1990年   1539篇
  1989年   1420篇
  1988年   1430篇
  1987年   1324篇
  1986年   1323篇
  1985年   1327篇
  1984年   1138篇
  1983年   1026篇
  1979年   1221篇
  1978年   883篇
  1975年   980篇
  1974年   1095篇
  1973年   1146篇
  1972年   937篇
  1971年   887篇
  1970年   778篇
  1969年   805篇
  1968年   1012篇
  1967年   907篇
  1966年   799篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
241.
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   
242.
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   
243.
244.
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   
245.
Depressed affect and time perception   总被引:1,自引:0,他引:1  
  相似文献   
246.
247.
248.
249.
250.
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   
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