基于用户感性需求的数据线收纳产品设计

目的 以数据线收纳产品为研究对象,从用户感性需求角度出发,探索感性工学在数据线收纳产品设计中的应用研究。方法 基于用户感性需求的理论知识,从感知、认知、情感3个层面收集用户对数据线收纳产品的感性词汇,分别筛选并确定各层面的感性词汇,随后选取具有代表性的产品样本,运用语义差异（SD法）量表问卷建立感性意象空间,量化用户对产品的感性需求,收集问卷数据,并用因子分析法进行定量分析,得出用户感性意象偏好。结论 通过收集用户感性需求,并通过因子分析法的定量分析,得出用户关注度较高的3个感性词汇,即分别代表了用户在感知、认知、情感3个层面上的感性偏好,再结合样本解析用户感性意象与产品要素的关联,归纳总结出数据线收纳产品在感知、认知、情感3个层面的设计要点,最后基于设计要点进行产品方案设计。     

How shape constancy relates to drawing accuracy.

There is increasing evidence that the major source of drawing errors lies in the initial perception of the to-be-drawn object. In four experiments, the authors explore the relation between an artist's susceptibility to perceptual transformations, as measured by a simple shape constancy task, and drawing accuracy. The data reveal a robust negative relation between errors on the shape constancy task and drawing accuracy in general, and specifically the accuracy of the rendering of spatial relations. The data further suggest that the perceptual processes that lead to errors on the shape constancy task occur during the initial encoding of the stimuli. The authors conclude that the shape constancy task likely measures one's ability to overcome constructive perception processes that transform the retinal image into a final percept, and that this ability is necessary for the accurate rendering of objects. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Perceptual evaluation of color gamut mapping algorithms

The recommendation of the CIE has been followed as closely as possible to evaluate the accuracy of five color gamut mapping algorithms (GMAs)—two nonspatial and three spatial algorithms—by psychophysical experiments with 20 test images, 20 observers, one test done on paper and a second one on display. Even though the results do not show any overall “winner,” one GMA is definitely perceived as not accurate. The importance of a high number of test images to obtain robust evaluation is underlined by the high variability of the results depending on the test images. Significant correlations between the percentage of out‐of‐gamut pixels, the number of distinguishable pairs of GMAs, and the perceived difficulty to distinguish them have been found. The type of observers is also important. The experts, who prefer a spatial GMA, show a stronger consensus and look especially for a good rendering of details, whereas the nonexperts hardly make a difference between the GMAs. © 2008 Wiley Periodicals, Inc. Col Res Appl, 33, 470–476, 2008     

Adult attachment and the perception of facial expression of emotion.

Adult attachment orientation has been associated with specific patterns of emotion regulation. The present research examined the effects of attachment orientation on the perceptual processing of emotional stimuli. Experimental participants played computerized movies of faces that expressed happiness, sadness, and anger. Over the course of the movies, the facial expressions became neutral. Participants reported the frame at which the initial expression no longer appeared on the face. Under conditions of no distress (Study 1), fearfully attached individuals saw the offset of both happiness and anger earlier, and preoccupied and dismissive individuals later, than the securely attached individuals. Under conditions of distress (Study 2), insecurely attached individuals perceived the offset of negative facial expressions as occurring later than did the secure individuals, and fearfully attached individuals saw the offset later than either of the other insecure groups. The mechanisms underlying the effects are considered. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Selective attention and the acquisition of new phonetic categories.

A class of selective attention models often applied to speech perception is used to study effects of training on the perception of an unfamiliar phonetic contrast. Attention-to-dimension (A2D) models of perceptual learning assume that the dimensions that structure listeners' perceptual space are constant and that learning involves only the reweighting of existing dimensions to emphasize or de-emphasize different sensory dimensions. Multidimensional scaling is used to identify the acoustic-phonetic dimensions listeners use before and after training to recognize the 3 classes of Korean stop consonants. Results suggest that A2D models can account for some observed restructuring of listeners' perceptual space, but listeners also show evidence of directing attention to a previously unattended dimension of phonetic contrast. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Infant sensitivity to trajectory forms.

The authors investigated whether infants are sensitive to visual event trajectory forms, and whether they are sensitive to the underlying dynamics of trajectory forms. The authors habituated 8-month-old infants to a videotaped event run either forward or reversed in time and then switched them to the same event run in the opposite direction. Infants dishabituated when switched to the event with the novel direction in time, indicating sensitivity to the form of the trajectory. Infants exhibited equivalent habituation rates and looking times for forward and reversed events, thus failing to provide evidence that infants are sensitive to the underlying dynamics. In a partial replication of this first experiment, the same pattern of results was found. Both experiments revealed infant sensitivity to the trajectory forms, but not the underlying dynamics of events. The authors discuss implications for methods used in infant event perception studies. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

基于傅里叶卷积和多特征调制的图像修复网络

目的 解决大面积破损难以修复且修复过程中感受野、特征空间信息利用不足，导致修复后的孔洞区域与背景之间出现结构、纹理、风格不一致的问题。方法 基于傅里叶卷积和多特征调制的修复网络FFC-MFMGAN，傅里叶卷积在网络的浅层便具有较大的感受野，尤其是在宽掩码时能够跳过掩码区域，捕获到有效特征，多特征调制生成网络能够分别利用完整区域的信息和随机样式操纵，增强与未受损区域的语义连贯性，以及大空洞率下修复的多样性。结果 在Place 2数据集上，将文中方法与其他图像修复方法进行了对比实验，经过测试，各类指标均得到明显改善，峰值信噪比提高了1.4%，结构相似性提高了4.5%，平均绝对误差降低了12.6%，基于学习的感知图像块相似性降低了9.1%。结论 FFC-MFMGAN网络能够较好地修复大面积不规则孔洞，同时增强修复图像的全局结构性和清晰度，对实际包装印刷图像的缺陷修复也有一定参考价值。     

Perceptual consequences of an illness-concern induction and its relation to hypochondriacal tendencies.

This article examines the perceptual consequences of activating illness concern as a function of hypochondriacal tendencies. In 2 independent samples, hypochondriacal tendencies were associated with slower reaction times on a modified emotional Stroop task when the stimulus words were illness related, but only when illness concern was activated. Moreover, these findings emerged when hypochondriacal tendencies were defined as a sensitivity to bodily sensations. When defined as illness preoccupation and fear, hypochondriacal tendencies were associated with a generalized pattern of perseveration to all stimuli when health concern was activated. Finally, the results persisted even after statistically controlling for state anxiety. Findings are discussed within the context of an activation hypothesis and highlight the importance of the operational definition and assessment of hypochondriacal tendencies when examining perceptual biases. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Auditory communication, meteorology and the Umwelt.

Animal communication is affected by a multitude of environmental factors including meteorological conditions, ground reflection, turbulence, and vegetative attenuation. Evolutionary and behavioral adaptations by animals to these challenges include elephant use of infrasound optimized for long-distance propagation. These adaptations in turn influence the perceptual sphere, or Umwelt, of calling animals. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

物联网感知层基于资源分层的多用户访问控制方案

针对物联网感知层节点计算、存储能力受限情况下,多用户安全高效的资源访问需求,提出一种分层访问控制方案.将提供同级别资源的节点划分为一个层次节点,利用层次节点之间形成的偏序关系,设计了安全高效的密钥推导算法,使用户在掌握单个密钥材料的情况下,能够访问更多层次资源.同时引入Merkle树机制,使多个用户通过相互独立的哈希链,安全高效的获取层次节点的密钥材料.方案在存储开销、计算开销、可证明安全和可扩展方面,比现有类似方案更适合多用户在物联网感知层环境下资源的访问.