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   6207篇
  免费   340篇
  国内免费   2篇
  2023年   46篇
  2022年   46篇
  2021年   91篇
  2020年   123篇
  2019年   152篇
  2018年   227篇
  2017年   248篇
  2016年   246篇
  2015年   163篇
  2014年   181篇
  2013年   697篇
  2012年   356篇
  2011年   341篇
  2010年   185篇
  2009年   207篇
  2008年   315篇
  2007年   310篇
  2006年   250篇
  2005年   222篇
  2004年   205篇
  2003年   220篇
  2002年   195篇
  2001年   94篇
  2000年   112篇
  1999年   78篇
  1998年   91篇
  1997年   67篇
  1996年   58篇
  1995年   51篇
  1994年   42篇
  1993年   50篇
  1992年   45篇
  1991年   57篇
  1990年   32篇
  1989年   41篇
  1988年   27篇
  1987年   32篇
  1986年   24篇
  1985年   39篇
  1984年   27篇
  1983年   26篇
  1982年   28篇
  1981年   37篇
  1980年   33篇
  1979年   31篇
  1978年   28篇
  1975年   34篇
  1974年   37篇
  1973年   26篇
  1971年   22篇
排序方式: 共有6549条查询结果,搜索用时 15 毫秒
71.
72.
73.
Over 18,000 students at Michigan State University reported their attendance at 46 campus events. Student characteristics were analyzed in terms of student attendance patterns. The 46 events were grouped into 4 independent categories that were attended by students with different characteristics. Students who attended cultural events were mostly single upperclassmen majoring in liberal arts; musical events were attended mostly by music majors; those attending athletic events tended to be single male undergraduates from the more applied disciplines; and social events were attended mostly by undergraduate girls.  相似文献   
74.
Orlo Strunk Jr.     
Pastoral Psychology -  相似文献   
75.
76.
The minimal transformation to orthonormality   总被引:1,自引:0,他引:1  
The solution is presented to the problem of finding that orthonormal matrix closest in the least-square sense to a given matrix of full rank. An application is shown to the problem in multiple regression analysis of determining the importance of each independent variable.  相似文献   
77.
78.
79.
This paper is concerned with the processing of informal arguments, that is, arguments involving probable truth. A model of informal argument processing is presented that is based upon Hample's (1977) expansion of Toulmin's (1958) model of argument structure. The model postulates that a claim activates an attitude, the two components forming a complex that in turn activates reasons. Furthermore, the model holds occurrence of the reason, or possibly the claim and the reason, activates values. Three experiments are described that provide support for the model.This research was supported by the Mellon Foundation and by the Office of Educational Research and Improvement of the Department of Education via an award for the Center for the Study of Learning to the Learning Research and Development Center. The contents of the paper are not necessarily the position of any of these organizations.  相似文献   
80.
To determine the frequency and correlates of nonsuicidal physically self-damaging acts in 12–14 year olds, a two stage epidemiologic survey with a self-administered questionnaire (N=3283) followed by a psychiatric interview of a subsample of the adolescents and their parents (N=444) was used. Prevalence estimates of interview validated nonsuicidal physically self-damaging acts were 2.46% in males and 2.79% in females. Significant relationships were found between nonsuicidal physically self-damaging acts and suicidal ideation, major depression and undesirable life events. Data suggest that physically self-damaging acts occur at substantial rates during early adolescence. The strong correlation between nonsuicidal self-destructive acts and both suicidal ideation and major depression clarifies prior conflicting reports in the literature and suggests that a history of self-damaging acts should be taken into consideration when evaluating for possible depression and suicide risk.  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