منابع مشابه
Kinematic analysis of post office employees' workstations.
This study analyzed a post office clerk's tasks, comparing two workstation models. The clerk was facing the client in one, and seated at 45 degrees to the counter in the other. We analyzed the most frequent tasks and those presenting the most critical points: 1) payment of a postal order; 2) accepting a registered letter, breaking them down into subtasks. We used an optoelectronic system for ki...
متن کاملThe Japanese Post Office in Theoretical and Comparative Perspective
The post office is properly a mercantile project. The government advances the expense of establishing the different offices, and of buying or hiring the necessary horses or carriages, and is repaid with a large profit by the duties upon what is carried. It is perhaps the only mercantile project which has been successfully managed by, I believe, every sort of government. The capital to be advanc...
متن کاملPremature disablement and death among post office workers.
From the economic as well as humanitarian point of view, disease which causes premature loss of life or working capacity is of importance and interest. Death before the age of 60 clearly represents a loss to the community of the breadwinner's skill and often entails the burden of the support of his family. The same is true of sickness absenteeism and chronic incapacitating disease which enforce...
متن کاملVDU workstations and vision in post office and bank operators.
A cross-sectional study was carried out on a sample of 26 VDU operators in a post office and a bank, working regularly on video display units. The study aimed at (1) determining the physical working conditions, particularly lighting conditions, (2) assessing employees' complaints, (3) measuring visual defects among operators in VDU workstations. The following results are revealed: (a) ergonomic...
متن کاملClosest Pair and the Post Office Problem for Stochastic Points
Given a (master) set M of n points in d-dimensional Euclidean space, consider drawing a random subset that includes each point mi ∈ M with an independent probability pi. How difficult is it to compute elementary statistics about the closest pair of points in such a subset? For instance, what is the probability that the distance between the closest pair of points in the random subset is no more ...
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ژورنال
عنوان ژورنال: Nature
سال: 1981
ISSN: 0028-0836,1476-4687
DOI: 10.1038/291448a0