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   23196篇
  免费   449篇
  国内免费   8篇
  23653篇
  2020年   276篇
  2019年   302篇
  2018年   459篇
  2017年   447篇
  2016年   450篇
  2015年   341篇
  2014年   383篇
  2013年   1754篇
  2012年   733篇
  2011年   809篇
  2010年   458篇
  2009年   445篇
  2008年   608篇
  2007年   599篇
  2006年   522篇
  2005年   455篇
  2004年   454篇
  2003年   419篇
  2002年   437篇
  2001年   874篇
  2000年   881篇
  1999年   595篇
  1998年   240篇
  1997年   225篇
  1996年   197篇
  1995年   179篇
  1993年   193篇
  1992年   467篇
  1991年   441篇
  1990年   450篇
  1989年   428篇
  1988年   397篇
  1987年   375篇
  1986年   409篇
  1985年   397篇
  1984年   322篇
  1983年   281篇
  1979年   279篇
  1978年   234篇
  1977年   193篇
  1975年   254篇
  1974年   331篇
  1973年   293篇
  1972年   273篇
  1971年   233篇
  1970年   224篇
  1969年   268篇
  1968年   305篇
  1967年   236篇
  1966年   269篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
171.
Suicide and rurality in urban society   总被引:3,自引:0,他引:3  
Recent findings suggest that suicide increases with rurality, but research on rural suicide leaves many questions unanswered. This study specifies problems of community organization as a reason for expecting a positive effect of rurality on the suicide rate. A multiple regression analysis of county data shows that rurality has a substantial positive effect and is, in fact, the best predictor of the suicide rate among several variables selected from the previous literature. Additional research is needed to test the interpretation that rurality contributes to an incomplete, fragmented form of community organization which influences the suicide rate by disrupting primary relationships.  相似文献   
172.
173.
The ability to recognize and analyze a personal legend in the conversation of an older person is a useful tool for the skilled, compassionate conversation partner. Having isolated the legend, the empathic listener can offer the teller of the legend the gift of an understanding, clarifying interpretation of its significance.Carolyn K. Dennis, M. Th., is assistant chaplain and program coordinator of the health care lay ministry training program at Gaston Episcopal Hospital, in Dallas, Texas.  相似文献   
174.
A double-blind experiment with 58 adults tested the hypothesis that proximity to sugar reduces human grip strength. An analysis of variance supported the hypothesis.  相似文献   
175.
In a previous experiment, Allen found no release from proactive inhibition using the Brown-Peterson procedure in a group who were shifted from recalling colors to recalling the names of colors. The lack of release suggests that colors and color names are encoded in similar ways. It was argued that the similarity of encoding might have been caused by the procedure of requiring the subjects to say out loud the names of the colors at the time of stimulus presentation and recall. In the present experiment, a procedure was devised that eliminated the need for verbalization of the colors. The same pattern of results was obtained, namely, release from proactive inhibition in the group shifted from recalling color names to colors but not in the group shifted in the opposite direction. It was concluded that if subjects encode colors as a verbal label, then this encoding strategy is not caused by the procedure of requiring the subjects to verbalize the colors.  相似文献   
176.
177.
178.
Distraction and coping with pain   总被引:7,自引:0,他引:7  
  相似文献   
179.
The effects of tobacco smoking on responses to electrical stimulation were studied according to a Method of Limits (ML) threshold analysis and a Sensory Decision Theory (SDT) analysis. For the ML procedure, Detection Threshold (DT), Pain Threshold (PT) and Tolerance Level (TL) measures were obtained. For the SDT procedure, nonparametric estimates of capacity to discriminate between stimulus intensities (P(A)) and response criterion (B) were calculated. There was no main effect of tobacco smoking on responses to electrical stimulation. Males had consistently higher ML thresholds than females in both the NS and S condition. Males also tended to increase in DT and PT after smoking. From a comparison between the effects of smoking on ML and SDT measures it was suggested that PT is related mainly to sensory factors and TL to response factors.  相似文献   
180.
Prolonged deprivation and future orientation (FO) were studied in 200 Indian and Nepalese students of 14–16 and 18–20 years with verbal measures. In both cultures low deprived subjects were significantly more future-oriented. In the development of FO both age and deprivation were significant with experiential aspect of socialization exerting greater influence than physico-economic deprivation.  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