نتایج جستجو برای: visually impaired persons
تعداد نتایج: 254083 فیلتر نتایج به سال:
In light of our ageing population it is important that the urban environment is easily accessible and hence supports older adults' independence. Tactile 'blister' paving was originally designed to provide guidance for visually impaired people at pedestrian crossings. However, as research links irregular surfaces to falls in older adults, such paving may have an adverse effect on older people. W...
Blind and blindfolded sighted observers were presented with auditory stimuli specifying target locations. The stimulus was either sound from a loudspeaker or spatial language (e.g., "2 o'clock, 16 ft"). On each trial, an observer attempted to walk to the target location along a direct or indirect path. The ability to mentally keep track of the target location without concurrent perceptual infor...
[This corrects the article on p. 76 in vol. 11, PMID: 28261053.].
Urban environments require cognitive abilities focused on both spatial overview and detailed understanding of uses and places. These abilities are distinct but overlap and reinforce each other. Experimental recall of spatial and semantic information indicates that using a road map enables subjects to demonstrate a significantly better spatial understanding, identify semantic elements more often...
Campbell (1960) proposed the theory that creativity required blind variation and selective retention (BVSR). More than a half century has transpired without any resolution of the controversy over the theory’s validity. This inability to reach consensus may reflect a fundamental failure on both sides to define the critical terms of the debate, namely, creativity and blindness. Hence, to help res...
We describe an innovative methodology for determining the quality of digital images. The method is based on measuring the variance of the expected entropy of a given image upon a set of predefined directions. Entropy can be calculated on a local basis by using a spatial/spatial-frequency distribution as an approximation for a probability density function. The generalized Rényi entropy and the n...
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