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   18518篇
  免费   741篇
  国内免费   4篇
  2019年   279篇
  2018年   344篇
  2017年   287篇
  2016年   362篇
  2015年   236篇
  2014年   336篇
  2013年   1540篇
  2012年   543篇
  2011年   612篇
  2010年   372篇
  2009年   393篇
  2008年   566篇
  2007年   564篇
  2006年   530篇
  2005年   440篇
  2004年   471篇
  2003年   445篇
  2002年   415篇
  2001年   481篇
  2000年   555篇
  1999年   378篇
  1998年   238篇
  1997年   176篇
  1996年   189篇
  1995年   181篇
  1994年   170篇
  1992年   298篇
  1991年   296篇
  1990年   310篇
  1989年   284篇
  1988年   276篇
  1987年   241篇
  1986年   255篇
  1985年   271篇
  1984年   212篇
  1983年   226篇
  1982年   169篇
  1980年   171篇
  1979年   258篇
  1978年   224篇
  1975年   226篇
  1974年   251篇
  1973年   275篇
  1972年   229篇
  1971年   224篇
  1970年   169篇
  1969年   197篇
  1968年   251篇
  1967年   246篇
  1966年   214篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
221.
Hemispheric symmetry in contrast and orientation sensitivity   总被引:1,自引:0,他引:1  
  相似文献   
222.
223.
The phases of a patient's struggle to come to terms with a malignant disease and impending death are illustrated by means of W. M. Diggelmann's book "Schatten--Tagebuch einer Krankheit" (Shadow--Diary of an Illness). Their expression, mutual influences and contents are documented by quotations.  相似文献   
224.
225.
This project studied the effects of weather variables and size of the population on minor and major violence rates within six prisons in the Kingston, Ontario, Canada area from January, 1980 through December, 1983. While weather variables have been studied in relation to mood changes within the general population, this study was the first to analyze the impact of weather variables on rates of violence within the prison setting using forward inclusion multiple regression. Analysis showed that population size consistently appeared positively correlated with assaults on other inmates among the male medium-security prisoners during the summer months. In the summer months, temperature tended to be positively related to some minor kinds of offenses, but in the winter months the relationship was negative. Humidity, rain, sunshine hours, snow, and snow on the ground were not consistently related to incidences of minor and major violence. Indices of geomagnetic disturbances had statistically significant inverse relationships with attempted suicide/self-inflicted injury rates among the male prisoners during the summer months. Over 12 months, wind was generally negatively correlated with incidences of major and minor violence among the male inmates. For 6-mo. periods, wind was generally positively correlated with violence rates during the winter months and negatively correlated during the summer months among the male inmates. The findings relating weather variables to violence rates in the women's prison were consistently in opposition to those found for male prisoners during the 4-yr. period.  相似文献   
226.
227.
Howard S. Liddell, Professor of Psychobiology in the Department of Psychology at Cornell University, was one of the earliest American students and developers of I.P. Pavlov's theory of the conditioned reflex and an early researcher on stress. The significance of Liddell's work on stress was fully recognized when he was sent, as a member of a commission, to the battlefront at the height of the Korean War to study stress and self-control in the soldiers. This profound experience convinced Liddell that behavioral research must ultimately be made relevant to the understanding and elevation of human behavior. He spent the remaining ten years of his life in efforts to implement this conviction through research, writing, and lectures before scientific and lay groups.  相似文献   
228.
Attributional retraining: a review   总被引:18,自引:0,他引:18  
  相似文献   
229.
In two experiments, subjects read passages of text and circled instances of a target letter under normal conditions or while engaged in articulatory suppression. In Experiment 1, subjects searching for the letter e made a disproportionately large number of errors on the word “the” and more errors when e occurred in unstressed than in stressed syllables of three-syllable words. In Experiment 2, subjects searching for the letter f made an exceedingly large number of errors on the word “of.” Articulatory suppression significantly reduced the stress effect in the three-syllable words but did not reduce the tendency to make errors on “the” or “of,” suggesting that phonological recoding is responsible for this effect of stress but does not influence the unitization processes of reading.  相似文献   
230.
The development and psychometric investigation of the Perceived Support Network Inventory (PSNI), a measure of perceived social support, is described. A group of 146 introductory psychology students participated in a test-retest study design that collected reliability, internal consistency, and construct, convergent, and discriminant validity data on the scale. In addition, a contrast group of 28 Counseling Center clients was administered the PSNI. Test-retest reliability of the PSNI total score and subscale scores ranged from .72 to .88. Internal consistency for the PSNI was .77. Construct validity estimates ranged from .21 to .57. Convergent validity estimates varied from -.25 to .20. Discriminant validity estimates varied from -.11 to .19. Sample differences between introductory psychology student mean PSNI total and subscale scores and Counseling Center client mean PSNI total and subscale scores proved significant. Recommendations for subsequent research and future application are offered.  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