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Work postures and movements of the upper limb were analysed for 12 'mouse' operators and 12 'non-mouse' computer operators employed in word-processing work. Measurements were carried out during correction of a given text. 'Mouse' operators spent 64% of the working time with the operative wrist deviating more than 15 degrees towards the ulnar side, while(More)
BACKGROUND The aim of the study was to present and evaluate a work-task-oriented interview technique focusing on the placement of the hands relative to the body and assessing per cent time spent in five standard work postures during a working day. METHODS The reproducibility of estimated time spent in each work posture was tested by the test-retest method(More)
The main objective of the study was to evaluate the ability of workers to reproduce simulated manual work forces correctly and to quantify these forces in Newtons (N) by means of self-reports. Fourteen male and 14 female workers participated in the study. Three experiments were carried out. In the first experiment, the ability to reproduce the magnitudes of(More)
The study evaluates two simple instruments that may be used to describe aspects of physical workload in almost any occupation: a pedometer, which measures the number of steps taken by the subject wearing it, and a posimeter, which quantifies the time spent sitting and the number of changes between sitting and a The present data showed that the pedometer(More)
A fuel system to be implemented into a ramjet for Cal Poly's supersonic wind tunnel was designed. The objective was to design, build, and test a fuel system for an experimental ramjet design. The fuel system is composed of a tank, filter, pump, pressure regulator, and check valve. The fuel type chosen was Jet-A, which gave an approximate combustion chamber(More)
A set of electrocardiographic criteria for the diagnosis of coronary artery disease was evaluated in two different groups of patients examined by computer aided 12 lead exercise electrocardiographic stress testing and coronary arteriography. One group consisted of patients with severe angina pectoris and the other of patients who had suffered a myocardial(More)
The recording of weak signals of high spatial frequency emanating from intensifying screens has been analysed in different films at varying densities. Even if the gamma value is kept constant over a wide range of densities, the recording of these signals is impaired at high densities above a certain optimum density, coinciding with the lower part of the(More)
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