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📜 SIMILAR VOLUMES
inadvertent activation of the wrong switch or circuit-breaker. Specific preventive measures were proposed for each type of error. The paper includes a critical discussion of various approaches to error prevention. It is pointed out that ergonomic and technical improvements are the most effective of
Laboratory experiments were carried out to evaluate and compare search methods and in order to make up a list of user problems. Subjects were presented with questions which were typed on cards and had to be answered with Viditel. Subjects needed four to six minutes for each question and used 2-5 to
only mandatory in four EEC countries. Furthermore, limitation of both the level and number of high intensity impulses per day is virtually ignored in the EEC apart from Belgium. For comparison, the laws on the protection of workers' hearing, as they apply in Sweden, Norway, the USA, Canada and Austr