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   53124篇
  免费   1996篇
  国内免费   24篇
  55144篇
  2019年   603篇
  2018年   842篇
  2017年   916篇
  2016年   895篇
  2015年   656篇
  2014年   778篇
  2013年   3982篇
  2012年   1380篇
  2011年   1519篇
  2010年   1026篇
  2009年   977篇
  2008年   1403篇
  2007年   1299篇
  2006年   1229篇
  2005年   1054篇
  2004年   991篇
  2003年   1044篇
  2002年   1024篇
  2001年   1718篇
  2000年   1670篇
  1999年   1256篇
  1998年   599篇
  1997年   541篇
  1996年   523篇
  1995年   510篇
  1992年   1097篇
  1991年   1058篇
  1990年   1004篇
  1989年   946篇
  1988年   937篇
  1987年   913篇
  1986年   920篇
  1985年   966篇
  1984年   783篇
  1983年   658篇
  1981年   532篇
  1979年   818篇
  1978年   624篇
  1977年   581篇
  1976年   563篇
  1975年   713篇
  1974年   804篇
  1973年   891篇
  1972年   686篇
  1971年   648篇
  1970年   607篇
  1969年   647篇
  1968年   765篇
  1967年   691篇
  1966年   748篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
191.
On analog movements of visual attention   总被引:2,自引:0,他引:2  
  相似文献   
192.
193.
Body-frame size is an important factor in determining an optimal body weight for a given height. Previous studies have indicated that many individuals incorrectly estimate their body-frame size, and, as a result, incorrectly assess their ideal weight. The present study investigated the accuracy of estimation of body-frame size as a function of sex and actual frame size. The subjects were 66 men and 52 women participating in a community adult fitness program. Data indicated that medium-framed individuals were the most accurate in their estimations of body-frame size. Also, women were twice as likely to be accurate as were men. These results are interpreted to mean that most people assume they are medium-framed and that there is a sex difference in the way body-frame size is estimated.  相似文献   
194.
195.
This research investigated the buffering role of social support in the relationship of work load to both tension-anxiety and coping for police radio dispatchers ( N = 60). Each dispatcher was observed throughout an entire 8-hour work shift by a trained observer. Objective load consisted of the hourly rate of incoming telephone calls, police radio transmissions, and face-to-face or written communications from superiors, co-workers, and others. At the end of each shift, measures were taken of dispatchers' perceived load, felt tension-anxiety, and coping actions. Hierarchical regression revealed that support from superiors moderated the effects of both objective and perceived loads; no main effects of support were found. Statistically significant interactions confirmed the hypothesized buffering role of support: under high perceived load, dispatchers with high social support engaged in more coping actions and felt less tension-anxiety than did low-support dispatchers. No differences were found when perceived load was low. Support also buffered effects of objective load on tension-anxiety but not on coping.  相似文献   
196.
197.
198.
W Lüders 《Psyche》1988,42(3):216-220
  相似文献   
199.
Visual cognitive differences between hearing (N = 16) and deaf (N = 32) high-school and middle-school students were studied. Visual tasks were presented on a microcomputer and response latencies were collected. Significant differences were noted between the deaf and normal groups but not between total communication deaf and oral deaf students. These differences support the hypothesis that deaf students prefer a visual cognitive strategy. Implications for educating the deaf are discussed.  相似文献   
200.
The Rosenberg Self-esteem Scale was administered to 550 14- and 16-yr.-old (+/- 6 mo.) girls. Self-esteem scores were categorized by weight and weight by height. Scores on the Quetelet Index for obesity were correlated with self-esteem scores. Mean self-esteem of the low- and middle-weight by height group was significantly higher than the mean of the high-weight by height group. In analyzing weight alone, the self-esteem of the middle-weight group was significantly higher than the self-esteem of the high-weight group. The correlation of the obesity index and self-esteem indicated that as weight increased self-esteem decreased.  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