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This paper begins with a brief review of research on the way in which loud noise affects the efficiency of human work, leading to an examination of some differences between individuals in the extent to which efficiency is affected. Noise is regarded as producing a narrowing of attention towards work components of high priority, an effect which is seen as providing a basis for understanding previous contradictory interpretations in this area. Extroverted people seem more susceptible to this narrowing of attention, while the performance of introverts is more stable. Some related research on individual differences in performance, and preference for noisy environments is also discussed. 相似文献
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Isoperimetric inequalities are applied to a moving-boundaryproblem for doubly-connected domains. This problem occurs forexample in electrochemistry, in which case the domains in questionare the electrolyte of an electrolytic cell. The two electrodessurrounding the electrolyte are assumed to grow or dissolve,at different rates in general, by electrochemical reaction.We obtain optimal estimates showing, for example, that the leastchange in volume of each electrode always occurs in sphericalsymmetry. 相似文献
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