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   58979篇
  免费   2233篇
  国内免费   26篇
  2020年   587篇
  2019年   696篇
  2018年   989篇
  2017年   1047篇
  2016年   1077篇
  2015年   782篇
  2014年   930篇
  2013年   4542篇
  2012年   1653篇
  2011年   1799篇
  2010年   1207篇
  2009年   1147篇
  2008年   1647篇
  2007年   1541篇
  2006年   1448篇
  2005年   1271篇
  2004年   1212篇
  2003年   1233篇
  2002年   1234篇
  2001年   1820篇
  2000年   1742篇
  1999年   1352篇
  1998年   681篇
  1997年   625篇
  1996年   595篇
  1992年   1176篇
  1991年   1122篇
  1990年   1063篇
  1989年   991篇
  1988年   979篇
  1987年   964篇
  1986年   973篇
  1985年   1023篇
  1984年   836篇
  1983年   715篇
  1981年   589篇
  1979年   870篇
  1978年   680篇
  1977年   640篇
  1976年   612篇
  1975年   757篇
  1974年   857篇
  1973年   924篇
  1972年   706篇
  1971年   673篇
  1970年   633篇
  1969年   668篇
  1968年   791篇
  1967年   715篇
  1966年   780篇
排序方式: 共有10000条查询结果,搜索用时 46 毫秒
961.
Configurational information in face perception   总被引:10,自引:0,他引:10  
A W Young  D Hellawell  D C Hay 《Perception》1987,16(6):747-759
A new facial composites technique is demonstrated, in which photographs of the top and bottom halves of different familiar faces fuse to form unfamiliar faces when aligned with each other. The perception of a novel configuration in such composite stimuli is sufficiently convincing to interfere with identification of the constituent parts (experiment 1), but this effect disappears when stimuli are inverted (experiment 2). Difficulty in identifying the parts of upright composites is found even for stimuli made from parts of unfamiliar faces that have only ever been encountered as face fragments (experiment 3). An equivalent effect is found for composites made from internal and external facial features of well-known people (experiment 4). These findings demonstrate the importance of configurational information in face perception, and that configurations are only properly perceived in upright faces.  相似文献   
962.
In times of stress, men and women sometimes turn to the use of alcohol and drugs as an avenue for relieving their discomfort and distress. One explanation of this finding implicates traditional male tendencies as predisposing factors. The purpose of the present investigation was to study how the relationship between stress and substance use is moderated (1) by the masculine role, as measured by the Masculine Role Inventory; and (2) by socially desirable and undesirable masculine-instrumental and feminine-expressive personality attributes, as measured by the Extended Personal Attributes Questionnaire. The results indicated that during stressful episodes men characterized by socially undesirable instrumental personality attributes reported using tranquilizers and sedatives. By contrast, it was found that during stressful times, women characterized by success preoccupation reported less use of mind-altering drugs and more use of tranquilizers-sedatives. In addition, it was found that socially desirable expressive attributes served to buffer the impact of stressful experiences on women's use of alcohol.A preliminary report of these data were presented at the 1985 annual meeting of the Southwestern Psychological Association, Austin, Texas. Gratitude is extended to Toni Falbo for her assistance with this research.  相似文献   
963.
One theory of love (J. A. Lee, The Colors of Love: An Exploration of the Ways of Loving, Don Mills, Ontario: New Press, 1973) assumes at least six different attitudinal orientations toward love. Based on Lee's approach, recent research (e.g., C. Hendrick & S. Hendrick, “A Theory and Method of Love,” Journal of Personality and Social Psychology, 1986, 50, pp. 392–402) has found consistent sex differences in love attitudes. Other research has found comparable sex differences in sexual permissiveness and other sexual attitudes. The present study explored the possibility that gender role orientation might be related to differences in love and sexual attitudes. A sample of 286 college students completed the Bem Sex Role Inventory (BSRI), Love Attitudes Scale, Sexual Attitudes Scale, and the Rosenberg Self-Esteem Scale. Correlational analyses revealed many significant associations among love and sexual attitudes, self-esteem, and masculinity and femininity. Subjects were also classified according to gender role as androgynous, masculine, feminine, or undifferentiated, according to BSRI scores. Analyses of variance showed effects for both sex of subjects and gender role orientation on several of the dependent measures. The pattern of the results suggested that sex-stereotyped couples may have difficulties in romantic relationships because of the discrepancies in their love and sexual attitudes. An argument was made in support of the recent trend toward a multidimensional concept of gender role orientation.  相似文献   
964.
目的、意向和意识   总被引:1,自引:0,他引:1  
本文提出了一个意向性目标搜寻的计算机模型,它有两个部分,静态部分包括一个目标表征和到达这个目标的程序。动态部分是一个感觉输入、中间信息加工,行为输出的重复的反馈循环。人类意向必然伴有意识,但机器人则可能无意识而有意向。 利用目标搜寻系统机器人模型,我们对目标搜寻系统的目的连续统下了定义;这个连续统从简单的直接反应系统一直到意向性系统。对这个目的连续统有两种传统的解释:一是柏拉图、亚里士多德和普罗提诺的终极原因理论,二是希腊原子论者和现代进化生物学家的还原主义学说。本文评价了这些学说。 本文考察了几种类型的意识机能,提出了以自动机为依据的意识理论,比较了人类和计算机。从计算机结构的角度来看,人类意识是一类特殊的计算机控制系统。  相似文献   
965.
966.
A major home improvement chain located primarily in the western United States initiated the use of thePersonnel Selection Inventory, a written integrity test, as part of its pre-employment hiring process. For two years only, those job applicants who passed this test and other pre-employment criteria were hired by the chain. Following the introduction of the inventory, there was: (1) a 50% reduction in the number of employee terminations for theft, illegal drug use, and violence over a five year period and (2) a savings in shrinkage losses that amounted to over two million dollars over a two year period.  相似文献   
967.
    
Clinical staff’s attributions about diabetes management were measured using newly developed scales. Eighty-five physicians and nurses provided data to investigate the psychometric properties of the scales and to examine the patterns of attributions made. Alpha coefficients for the 7 six-item scales were satisfactory, ranging from .51 to .73. A comparison between attributions for positive and negative outcomes of diabetes management produced examples of self-serving bias. Comparisons were made with data from 286 insulin-dependent diabetes patients. Staff tended to rate patients as having less personal control over positive outcomes (t=2.94;df=338;p<.01) and tended to emphasize chance to a greater extent than did the patients (t=−4.32;df=338;p<.001). There was a tendency for staff to rate negative outcomes as being more foreseeable by the patients than the patients did themselves (t=−3.11;df=346;p<.01). Both patients and staff demonstrated bias towards dispositional attributions. The implications of between and within group differences in attribution patterns are discussed. The research presented here was supported in part by grants from the National Institutes of Health, U.S.A. (No. AM28196) and from the British Diabetic Association to Dr. C. Bradley.  相似文献   
968.
The influence of alcohol and loud music on analytic versus holistic processing was examined in classification, concept learning, and embedded figures tasks. In the classification task, loud music reduced analytic responding by individuals who had consumed alcohol and increased analytic responding by individuals who had received placebo drinks. Alcohol also decreased the speed with which individuals were able to generate analytic responses in the classification task and decreased analytic performance on the embedded figures test. Alcohol slowed the rate of learning in the concept-learning task but did not lead to less analytic responding in that task. The results are consistent with the idea that alcohol slows the rate of information processing, particularly in tasks requiring visual analysis of stimuli.  相似文献   
969.
Among a sample of American college students, body image and the degree of desired weight change were associated with academic self-rankings, with social and psychological well-being, and with the development of eating difficulties. The effects of body image and desired weight change on eating disorders were generally found to be greater for women than for men, and their effects on student self-rankings of academic ability, social, and psychological traits were more pervasive for women than for men. The less attractive a woman perceived herself to be and the more weight she wanted to lose, the greater was her overall sense of academic, social, and psychological impairment. Women who had poor body images and who desired to lose weight were more likely to report eating difficulties.  相似文献   
970.
A design for an Apple II interface that senses relative rotary position and/or motion via a digital potentiometer is presented. A thorough discussion of the circuit’s theory of operation and a fully commented BASIC software listing are included. Suggested applications include an infinite-turn rotary device for psychophysical methods of adjustment, the sensing of rotary translations of a steering wheel in a driving simulator, and a digital tachometer/odometer for tracking performance on stationary exercise bicycles and treadmills.  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