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   2868篇
  免费   297篇
  国内免费   666篇
  2024年   5篇
  2023年   60篇
  2022年   64篇
  2021年   102篇
  2020年   120篇
  2019年   118篇
  2018年   135篇
  2017年   128篇
  2016年   140篇
  2015年   97篇
  2014年   96篇
  2013年   261篇
  2012年   168篇
  2011年   218篇
  2010年   195篇
  2009年   189篇
  2008年   216篇
  2007年   284篇
  2006年   244篇
  2005年   234篇
  2004年   168篇
  2003年   115篇
  2002年   69篇
  2001年   47篇
  2000年   45篇
  1999年   43篇
  1998年   37篇
  1997年   28篇
  1996年   18篇
  1995年   23篇
  1994年   24篇
  1993年   14篇
  1992年   10篇
  1991年   12篇
  1990年   10篇
  1989年   15篇
  1988年   6篇
  1987年   10篇
  1986年   5篇
  1985年   10篇
  1984年   7篇
  1983年   5篇
  1982年   6篇
  1981年   9篇
  1980年   6篇
  1979年   8篇
  1976年   2篇
  1975年   1篇
  1973年   1篇
  1972年   2篇
排序方式: 共有3831条查询结果,搜索用时 15 毫秒
871.
McCollough效应在完全黑暗和自然视觉条件下的消退过程很缓慢,而利用同频补色条栅来进行反诱导,能在十几分钟内消除显色效应。消除所用时间与反诱导条栅的亮度、颜色和栅条间距(空间频率)有关。进一步说明导致McCollough效应恢复平衡的主要因素跟网膜刺激方式有关。  相似文献   
872.
一、问题的提出 噪声对人体的危害,特别是直接对听力的危害,随着现代工业的迅速发展,已成为公害之一,越来越普遍地引起人们的极大关注。为了控制噪声和制定出可行的噪声允许标准,以期达到对人体的危害减少到最低的程度,多年来,国内外已做过不少的工作。 就人的听域而言,在一定的强度下,可听到的频率范围是很宽的。然而,就在现代化  相似文献   
873.
问 题 我国独创的针刺麻醉手术是在病人意识完全清醒的状态下进行的。这就向针麻原理的研究和针麻临床实践提出了问题,即(1)心理因素在针麻中是否起作用?(2)那些心理因素在针麻中起作用?(3)心理因素在针麻中起些什么作用,起多大作用? 从1965年以来,我们运用心理学等科学知识和方法,继承和发扬祖国医学关于心理因素在针刺中作用的宝贵经验,对几千名针麻病员就这个专题进行了研究。  相似文献   
874.
在暗适应条件下对11名正常视力的男性受试者测定了进入眼内的闪光能量与恢复时间的关系。当闪光时间为0.1—5毫秒,积分亮度为0.07—1.69熙提秒时,人眼辨别一6’视角的蓝道环缺口所需的恢复时间仅取决于亮度和曝光时间的乘积,即Bloch律成立。文章并对防闪光盲护目镜应具的关闭时间进行了讨论。  相似文献   
875.
不同年龄动物在各种行为实验中表现出学习记忆能力不同。一般地说,动物进入中年期以后,记忆保持力(retention)随年龄增长而下降。有关衰老性记忆障碍与脑内神经细胞变化的相关性已有大量观察记载,但中、幼年阶段的记忆力差异及其脑内突触机制  相似文献   
876.
听力正常人与聋人短时记忆的比较研究   总被引:7,自引:1,他引:6  
王乃怡 《心理学报》1993,26(1):11-18
以视觉系列呈现,自由回忆的方法比较了听力正常人与聋人对分别被强化的厂类相似性汉语字表的短时记忆获得量。从总的平均获得量来看,两组结果没有显著差异,而从每一编码维量在短时记忆的加工过程中的作用来看,两组被试都显示出了形、义两维编码维量的作用最强,而音码的作用相对比较弱。两组被试也都显示出了明显的系列位置效应,但聋人组的次级记忆容量明显地低于听力正常组,而初级记忆容量两组没有显著差异。并对可能的机制进行了讨论。  相似文献   
877.
Describes (a) the effects of a social-influences-based drug prevention program (the Midwestern Prevention Project) on the mediating variables it was designed to change and (b) the process by which the effects on mediating variables changed use of drugs (tobacco, alcohol, and marijuana). Students in 42 middle schools and junior high schools in Kansas City, Missouri, and Kansas City, Kansas, were measured in the fall of 1984 (N = 5,065) and again 1 year later (N = 5,008) after 24 of the schools had been through the program. Compared to students in control schools, students in program schools became less likely to express belief in the positive consequences of drug use, less likely to indicate that they would use such drugs in the future, more likely to report that their friends were less tolerant of drug use, and more likely to believe that they were better able to communicate with their friends about drug or school problems. Change in perceptions of friends' tolerance of drug use was the most substantial mediator of program effects on drug use. There was evidence that intentions to use and beliefs about the positive consequences of use may also mediate program effects on drug use.  相似文献   
878.
Parental communication is still relatively meaningful in Asian families with hierarchical, vertical, and authoritative relationships. Meanwhile, children's pro-environmental behaviour in emerging Asian nations tends to be passive, leading to a need for intervention from the closest parties, often the parent, whose familial role in green communication has not been examined. This study uses social learning theory to examine the interplay of parent-like spokespeople and message appeals in affecting young adults' cognitive and emotional responses, which is expected to influence the ad liking and believability of green advertisements and switching intention to green products, such as eco-friendly straws. A laboratory experiment was conducted with 240 subjects. The results showed that the frame of a father-like figure conveying a hope appeal generated the greatest enthusiasm and argument quality for young adults. Mother-like figures speaking a fearful message frame were the best generator for young adults' anger and threat appraisal. Ad liking was significantly impacted only by a mother-like spokesperson who spoke a fearful appeal mediated by anger and a father-like spokesperson who delivered a hope appeal mediated by argument quality. Young adults' willingness to switch to eco-friendly straws was indirectly influenced by the interaction effect of a mother-like spokesperson and fear appeal type mediated by ad believability.  相似文献   
879.
The influence of social class on prosocial behaviour has long been a focus of intense research interest. The present research involved four studies that covered four moral exemplars (villains, victims, heroes, and beneficiaries) to test whether people of different social classes are treated equally in moral judgements. We described moral events experienced by different agents of varying social classes and asked participants to rate the morality of the events and their emotional responses. The results revealed that compared with the low-class condition, high-class individuals had an overall moral disadvantage when they were regarded as villains, victims, and beneficiaries. For the exemplar of hero, the high-class condition was no different from the low-class condition except that high-class heroes evoked less elevation than low-class heroes. The results reveal that people hold a biased moral attitude toward individuals in different social classes.  相似文献   
880.
Emotional labour strategies have a significant impact on job burnout. However, current research results are controversial and unclear. A meta-analysis was conducted to explore the relationship between emotional labour strategies (surface acting and deep acting) and job burnout. A total of 84 empirical studies that included 28,242 participants were selected. The meta-analysis of the relationships between job burnout and surface acting and deep acting included 84 and 75 independent samples respectively. The results show that surface acting had a positive association (r = 0.25) with job burnout, whereas deep acting (r = −0.27) had a negative association with job burnout. Occupational types and measures of emotional labour strategies moderated the relationship between emotional labour strategies and job burnout, but this relationship was not moderated by measures of job burnout.  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