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In person identification, recognition failure due to variations of illumination is common. In this study, we employed image‐processing techniques to tackle this problem. Participants performed recognition and matching tasks where the face stimuli were either original images or computer‐processed images in which shading was weakened via a number of image‐processing techniques. The results show that whereas recognition accuracy in a memory task was unaffected, some of the techniques significantly improved the identification performance in a face‐matching task. We conclude that relative to long‐term face memory, face matching is more susceptible to discrepancy of shading in different images of a face. Reducing the discrepancy by certain preprocessing techniques can facilitate person identification when original face images contain large illumination differences. Copyright © 2013 John Wiley & Sons, Ltd. 相似文献
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本文以无记名问卷方式系统调查了浙江某高校在校大学本科生信仰基督教的状况,具体包括:接触宗教的心理状态,接触宗教的途径和动机,宗教皈依的过程,宗教认同的维持,对教义、崇拜对象、宗教团体、宗教活动场所的认同,一般仪式行为,宗教认同的程度,宗教信仰情操,宗教身份认同,虔诚程度的评价,对宗教信仰重要性的评价,宗教人格的成长。并针对这些情况,作了相关分析。 相似文献
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Xiaoming Li Rong Mao Bonita Stanton Qun Zhao 《Journal of child and family studies》2010,19(3):308-317
We designed this study to assess parental, behavioral, and psychological factors associated with tobacco use among Chinese adolescents. The data were collected from 995 middle school students in Nanjing, China. Both smoking experimentation and current smoking (smoking in the past 30 days) were assessed among the study sample. Psychosocial measures include family structure, problem behaviors, social influence of smoking (both parental and friends’ approval of smoking), depressive symptoms, social alienation, self-esteem, parental monitoring (social monitoring and academic monitoring) and parenting style (responsiveness and demandingness). Among the study sample (mean age 15.16 years and 50% females), 24% ever smoked and 15% smoked in the past 30 days. Advanced age, male gender, low family SES, low school performance and low educational aspiration were associated with both smoking experimentation and current smoking. Depressive symptoms, social alienation, low self-esteem, low social and academic monitoring, problem behaviors, low maternal and paternal responsiveness, peer smoking, parent smoking, and parental and friends’ approval of smoking were positively associated with current smoking among Chinese adolescents. Future tobacco use prevention efforts among Chinese adolescents need to consider the parental, behavioral, and psychological correlates identified in the current study. 相似文献
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Jun Lu Dong-mei Wu Bin Hu Wei Cheng Yuan-lin Zheng Zi-feng Zhang Qin Ye Shao-hua Fan Qun Shan Yong-jian Wang 《Neurobiology of learning and memory》2010,93(2):157-164
Previous evidence showed that administration of d-galactose (d-gal) increased ROS production and resulted in impairment of cholinergic system. Troxerutin, a natural bioflavonoid, has been reported to have many benefits and medicinal properties. In this study, we evaluated the protective effect of troxerutin against d-gal-induced impairment of cholinergic system, and explored the potential mechanism of its action. Our results displayed that troxerutin administration significantly improved behavioral performance of d-gal-treated mice in step-through test and morris water maze task. One of the potential mechanisms of this action was decreased AGEs, ROS and protein carbonyl levels in the basal forebrain, hippocampus and front cortex of d-gal-treated mice. Furthermore, our results also showed that troxerutin significantly inhibited cholinesterase (AchE) activity, increased the expression of nicotinic acetylcholine receptor alpha 7 (nAchRα7) and enhanced interactions between nAchRα7 and either postsynaptic density protein 95 (PSD95) or N-methyl-d-aspartate receptors subunit 1 (NMDAR1) in the basal forebrain, hippocampus and front cortex of d-gal-treated mice, which could help restore impairment of brain function. 相似文献
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公共健康领域里的几个相关伦理问题 总被引:4,自引:1,他引:3
公共健康与个人自由权既有相冲突的一面,又有相促进的一面.在一定的情况下,只有个人的权利得到了相应的保障,公共健康才能有效地促进.个人生命权利作为一项不可转让的权利,其中包括了健康权.然而,面对着公共健康的危机时,对于个人权利呈现出一种家长主义保护,以及公共善和个人自由权的关系问题. 相似文献
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从《科学发明创造实验问题材料库》中选取实验材料,采用“学习多个原型-测试多个问题”的两阶段实验范式,探究推理能力、认知方式和启发量对顿悟问题解决中原型激活与关键启发信息提取这两个阶段的影响。结果发现:(1)高推理能力被试比低推理能力被试的顿悟问题解决水平更高,且高推理能力被试在原型激活和关键启发信息提取上都显著优于低推理能力被试;(2)认知方式对原型激活和关键启发信息提取均没有影响;(3)启发量对原型激活没有影响,但对关键启发信息的提取有影响,并且高启发量的原型比低启发量的原型更能促进关键启发信息的提取。 相似文献