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   190824篇
  免费   8453篇
  国内免费   156篇
  2020年   2840篇
  2019年   3487篇
  2018年   3750篇
  2017年   4180篇
  2016年   4789篇
  2015年   3989篇
  2014年   4861篇
  2013年   23607篇
  2012年   5161篇
  2011年   4479篇
  2010年   4204篇
  2009年   4936篇
  2008年   4596篇
  2007年   4231篇
  2006年   4642篇
  2005年   4522篇
  2004年   4009篇
  2003年   3610篇
  2002年   3462篇
  2001年   4092篇
  2000年   3934篇
  1999年   3693篇
  1998年   2911篇
  1997年   2751篇
  1996年   2662篇
  1995年   2468篇
  1994年   2431篇
  1993年   2403篇
  1992年   3064篇
  1991年   2866篇
  1990年   2705篇
  1989年   2558篇
  1988年   2542篇
  1987年   2535篇
  1986年   2572篇
  1985年   2768篇
  1984年   2763篇
  1983年   2512篇
  1982年   2461篇
  1981年   2431篇
  1980年   2266篇
  1979年   2542篇
  1978年   2341篇
  1977年   2260篇
  1976年   2069篇
  1975年   2249篇
  1974年   2329篇
  1973年   2259篇
  1972年   1833篇
  1971年   1731篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
801.
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   
802.
Performance of two groups of youngsters, educable mentally retarded (CA 15-5; MA 11-4; IQ 74.3) and those of average ability (CA 10-5; MA 11-3; IQ 109.1) was compared for intentional and incidental visual memory as a function of cognitive level and color of the stimulus. Nonretarded subjects performed significantly better than the retarded ones of equal MA. Both groups performed better with a color than black-white card, and both groups did better on the tasks involving intentional rather than incidental memory.  相似文献   
803.
Light-eyed individuals generally perform better at self-paced activities while dark-eyed individuals perform better at reactive activities. Using multiple regression it was found that dark-eyed students hit a target with a frisbee more times than did light-eyed students.  相似文献   
804.
Individuals with stronger sex-role identities may be expected to show greater conformity to sex-typed behaviors. Proceeding from this assumption, the sex-role status and sex of students using different styles of carrying books were compared. This study also examined whether over-all hand preference or age were related to carrying styles or sex-role status. Subjects completed a questionnaire comprised of the 24-item Personal Attributes Questionnaire of Spence and Helmreich, a 6-item scale of hand preference and a self-rating of sex-role identity. Afterwards, each subject's carrying style was covertly observed and recorded. Most subjects carried their materials in a sex-typical way or in book bags (for which no sex-typed carrying styles were discovered). As in previous studies, men in this study scored higher than women on masculinity and androgyny and lower on femininity. Hand preference was not related to sex-role status. Carrying style was not significantly correlated with any of the predictor variables for men, perhaps because almost no variance in carrying style was observed among them. Women who used masculine carrying styles tended to be older, have greater instrumentality, and a more masculine identity.  相似文献   
805.
806.
This essay reports a program of research as the occupational and personal stress experienced by contemporary American clergy. Three studies are reported. In the first survey a group of largely Roman Catholic religious reported less stress than the general population. In a replication of this investigation on over 510 Protestant clergy this impression of less experienced stress and greater personal resources was confirmed. In the most recent study of clergy in Southern California, a mixed picture was observed. Although the impression of less overall stress was confirmed, great differences in layclery role expectations were observed.He is the coauthorof Clergy Malpractice: How to Care Carefully (Westminster Press, 1986) and is engaged in a variety of ministerial studies.Paper presented at the meeting of the International Council of Psychologists, Mexico City, September, 1984.  相似文献   
807.
808.
809.
I have benefited greatly from discussing the issues addressed in this paper with Michael Liston, John Vickers and Mark Wilson.  相似文献   
810.
Fixation accuracy was related to perception of laterally presented consonants. Small left-eye fixation inaccuracy influenced perceptual performance of 8 men and 8 women.  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