No coin nor oath required. For personal study only.
were introduced every sixth minute. A static local muscular load of 3"2 and 3"0% of the maximal voluntary contraction was found on the right and the left side, respectively. The median and peak muscular loads during work were low. There was a significant negative correlation between pauses and static load on the right upper trapezius muscle. The rating of perceived discomfort was less after the work periods with short pauses than after the work periods without. 19.1.40 (104838) Frith, J.J. CADD at work -but is it ergonomic? In: Trends in the Ergonomics of Work,
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lighting was preferred over task lighting and some task lighting conditions were preferred over others. The single adjective scale is recommended as being more sensitive than the typical paired semantic-differential scale.
Workstations require use of the hands both for text entry and for cursor-positioning or menu-selection. The physical arragement does not allow these two tasks to be done concurrently. To remove this restriction, various alternative input devices have been investigated, This work focuses on the class