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   72852篇
  免费   3068篇
  国内免费   27篇
  2020年   889篇
  2019年   1061篇
  2018年   1532篇
  2017年   1517篇
  2016年   1600篇
  2015年   1125篇
  2014年   1371篇
  2013年   6443篇
  2012年   2588篇
  2011年   2619篇
  2010年   1586篇
  2009年   1568篇
  2008年   2251篇
  2007年   2186篇
  2006年   2010篇
  2005年   1688篇
  2004年   1670篇
  2003年   1593篇
  2002年   1523篇
  2001年   2261篇
  2000年   2212篇
  1999年   1609篇
  1998年   796篇
  1997年   673篇
  1996年   758篇
  1995年   682篇
  1994年   675篇
  1993年   650篇
  1992年   1336篇
  1991年   1248篇
  1990年   1250篇
  1989年   1190篇
  1988年   1152篇
  1987年   1054篇
  1986年   1055篇
  1985年   1110篇
  1984年   898篇
  1983年   806篇
  1979年   953篇
  1978年   750篇
  1975年   780篇
  1974年   893篇
  1973年   926篇
  1972年   805篇
  1971年   752篇
  1970年   626篇
  1969年   654篇
  1968年   823篇
  1967年   744篇
  1966年   691篇
排序方式: 共有10000条查询结果,搜索用时 46 毫秒
931.
The development of beliefs about falling objects   总被引:1,自引:0,他引:1  
  相似文献   
932.
933.
Hemispheric symmetry in contrast and orientation sensitivity   总被引:1,自引:0,他引:1  
  相似文献   
934.
935.
936.
937.
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   
938.
In the contribution the recent situation of the therapy-important psychodiagnostic is discribed as characterized through a contradiction. On one hand there's an substantial pressure for an effective treatment, on the other hand we have only a few well developed theoretical models and practical instruments. Three empirical questions in the experience of conflicts are investigated: First the rather few percentage of conscious conflicts as consequence of the substantial unconsciousness from central motives; second the still relative abstract definition of needs, and third problems in diagnostic of the so called personality strukture'. The article is closed with a discussion of some new possibilities of a action-related diagnostic of conflicts and motives.  相似文献   
939.
940.
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   
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