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   79837篇
  免费   2450篇
  国内免费   20篇
  2020年   585篇
  2019年   773篇
  2018年   4194篇
  2017年   3563篇
  2016年   3183篇
  2015年   1005篇
  2014年   1044篇
  2013年   4569篇
  2012年   2316篇
  2011年   4145篇
  2010年   3513篇
  2009年   2581篇
  2008年   3303篇
  2007年   3727篇
  2006年   1639篇
  2005年   1636篇
  2004年   1503篇
  2003年   1357篇
  2002年   1404篇
  2001年   2030篇
  2000年   2028篇
  1999年   1522篇
  1998年   738篇
  1997年   649篇
  1996年   640篇
  1993年   574篇
  1992年   1264篇
  1991年   1154篇
  1990年   1148篇
  1989年   1047篇
  1988年   1033篇
  1987年   986篇
  1986年   1058篇
  1985年   1077篇
  1984年   915篇
  1983年   828篇
  1982年   597篇
  1981年   595篇
  1979年   968篇
  1978年   699篇
  1975年   775篇
  1974年   837篇
  1973年   927篇
  1972年   774篇
  1971年   729篇
  1970年   653篇
  1969年   675篇
  1968年   861篇
  1967年   779篇
  1966年   655篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
221.
Tobacco, alcohol, and drug use are problems for American-Indian people. We reviewed these problems and the explanations for them and described a bicultural competence skills approach for preventing substance abuse with American-Indian adolescents. Data from a study of that approach suggest its efficacy with American-Indian youth. At posttest and a 6-month follow-up, American-Indian subjects who received preventive intervention based on bicultural competence skills concepts improved more than did American-Indian subjects in a no-intervention control condition on measures of substance-use knowledge, attitudes, and interactive skills, and on self-reported rates of tobacco, alcohol, and drug use. Our findings have implications for future substance-abuse prevention research with American-Indian people.  相似文献   
222.
223.
224.
In this study the authors compared women's and men's reactions to various professional travel situations. A multivariate analysis of covariance was used to determine the effects of sex, professional role, and years traveling on the perceptions of these travel situations.  相似文献   
225.
In this article, the author identifies resources available to assist the gay and lesbian population with career planning and job search concerns. Evolving legal issues are also discussed.  相似文献   
226.
In this article the author lists and discusses sources of test information, with special attention on information given to what will be valuable to employment and career counselors.  相似文献   
227.
Family systems theory, as developed by Murray Bowen, has its conceptual basis in natural systems. A basic premise is that emotional process is not unique to homo sapiens and that human behavior might better be understood by observing this process in the broader context of all natural systems. This essay discusses the phenomenon of symbiosis as it is used in the natural sciences and as it relates to the emergence of increasingly complex systems in nature. Finally, the emergence of the parent/offspring symbiosis from its possible origins to its development in the human family is discussed.  相似文献   
228.
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   
229.
230.
Interview skills deficits may limit employment prospects of mentally retarded adults. Although numerous papers highlight the importance of interview skills, few have validated effective strategies for use with mentally retarded persons. Further, there has been a lack of research contrasting rival interview skills training strategies. The present study was conducted with two mentally retarded young adults. It contrasted peer-directed instruction, in which both participants were equally deficient in the target skills, with teacher-directed instruction. Results of the investigation indicated that instruction, rehearsal, and feedback may be effective strategies regardless of who provides instruction. Comparisons of teacher-directed and peer-directed instruction indicated little or no difference in the effectiveness of the two procedures. However, the peer-directed procedure involved considerably less staff time than did the teacher-directed procedure.  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