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"Where" and "what" in vision 总被引：3，自引：0，他引：3
The mixture of a few horizontal and vertical line segments embedded in an aggregate of diagonal line segments can be rapidly counted and their positions rapidly determined by a parallel (preattentive) process. However, the discrimination between horizontal and vertical orientation (that is, discrimination of a single conspicuous feature) requires serial search by focal attention. Under recent theories of attention, focal attention has been assumed to be required for the recognition of different combinations of features. According to the findings of this experiment, knowing "what" even a single feature is requires time-consuming search by focal attention. Only knowing "where" a target it is mediated by a parallel process. 相似文献
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高校图书馆"服务"与"爱" 总被引：1，自引：0，他引：1
张云珍 《农业图书情报学刊》2005,17(3):65-66,130
从图书馆的服务工作角度阐述了服务是一种爱的栽体,应将爱融入服务工作之中;强调了全球信息化的今天,图书管理员应丰富自己的知识,提高自己的能力,将爱落实到实处。 相似文献
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GOTTLIEB G 《Science (New York, N.Y.)》1963,139(3554):497-498
Much laboratory research is based on the assumption that the learning of parental characteristics by young nidifugous birds is rooted on visual factors. Naturalistic observations of ground- and hole-nesting duck species, augmented by sound amplification equipment, indicate that hatchlings are exposed to the call of their mother for a relatively long period before they are exposed to the sight of her. 相似文献
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庞培蓓 《信阳农业高等专科学校学报》2007,17(2):153-154
人们关注的中心为“图”,背景的部分为“底”,“图形”与“基底”的关系指一个封闭的式样与另一个和它同质的非封闭的背景之间的关系。图底关系理论在城市建筑设计中大有可为。 相似文献
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Melton LA 《Science (New York, N.Y.)》1994,266(5183):203-204
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"Walking" in the newborn 总被引：4，自引：0，他引：4
Brief daily exercise of the walking and placing reflexes in the newborn leads to a high rate of responding by 8 weeks and to an earlier onset of walking alone. There appears to be a critical period during which the walking response can be transformed intac from a reflexive to an instrumental action. 相似文献
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Each of three pigeons used a mirror to locate a spot on its body which it could not see directly. Although similar behavior in primates has been attributed to a self-concept or other cognitive process, the present example suggests an account in terms of environmental events. 相似文献
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Correll DL 《Science (New York, N.Y.)》1966,151(3712):819-821
"Polyphosphate" and fragments isolated from acid hydrolysis of polyphosphate have an infrared absorption band at 1400 cm(-1), which is characteristic of imidodiphosphate linkages. Complete hydrolysis of purified "polyphosphate" releases 1 to 2 moles of phosphate per mole of ammonia. The polymer must contain subunits which are cyclic and which contain both imidodiphosphate linkages and phosphate anhydride linkages. 相似文献