engleski

Possible Application of Harmonic Numbers in Ergonomic Assessment of Male Truck and Van Drivers Working Environment

Factors of working environment from cab in interacting with anthropometric measures of truck and van drivers in the static sitting position affect the task difficulty, according to TCI Fuller dynamic model. Anthropometric measures were taken from a random and sufficient sample of n = 50 truck and van drivers from company Tisak d.d., for Rijeka and Grad Zagreb with theirs surroundings. It was determined 95 percentil for all investigated anthropometric measures. Harmonic numbers i.e. mean values of ratios of characteristic anthropometric measures in relation to the standing height were calculated, for static sitting position. Linearity of functional dependencies between the studied anthropometric measures and standing height were evaluated according to value of correlation coefficient R. Some of the calculated harmonic numbers and functional dependencies (for R > 0.6) should be used in the future for simplified quick calculations based on the knowledge of the standing height for 95 centile of respondents, during defining of user requirements for the design of cab working environment in the new vehicles adapted to the target population of drivers.

task difficulty ; human factor ; 95th percentile ; harmonic numbers ; cab design

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