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- Anttonen, Hannu, et al.
(författare)
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Thermal manikin measurements - exact or not?
- 2004
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Ingår i: International Journal of Occupational Safety and Ergonomics. - 2376-9130. ; 10:3, s. 291-300
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Tidskriftsartikel (refereegranskat)abstract
- According to the European prestandard ENV 342:1998, the thermal insulation of cold-protective clothing is measured with a thermal manikin. Systematic studies on the reproducibility of the values, measured with different types of clothing on the commonly used standing and walking manikins, have not been reported in the literature. Over 300 measurements were done in 8 different European laboratories. The reproducibility of the thermal insulation test results was good. The coefficient of variation was lower than 8%. The measured clothing should fit the manikin precisely, because poorly fitting clothing gave an error in the results. The correlation between parallel and serial insulation values was excellent and parallel values were about 20% lower than serial ones. The influence of ambient conditions was critical only in the case of air velocity. The reproducibility of thermal insulation test results in a single laboratory was good, and the variation was lower than 3%.
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| 7. |
- Holmér, Ingvar, et al.
(författare)
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Design criteria for assessment of vehicle climate systems
- 2004
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Ingår i: Human Factors in Design. - 9042302496 ; , s. 303-305
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Konferensbidrag (refereegranskat)abstract
- The combined thermal effects of convection, radiation and conduction in a vehiclecompartment need special measuring equipment accounting for spatial and temporalvariations in the driver space. The most sophisticated equipment measures local heat fluxes at defined spots or areas of a man-shaped manikin. By calibration of segment heat fluxes with thermal sensation votes of panel of subjects, manikin data can be used as a design tool for evaluation of the quality of the thermal environment.
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| 9. |
- Kristav, Per, et al.
(författare)
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Utvärdering av gästföreläsare
- 2004
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- I många kurser anlitas gästföreläsare. Är de värda vad de kostar? Föreläser exempelvis alltid en inbjuden professor på den professorsnivå hon/han får betalt för? Vi anlitar även gästföreläsare från näringslivet för att höja trovärdigheten och kvalitén på våra kurser, men hur väl gör de egentligen detta? Dessa frågor har väkts hos oss under de år vissa av oss kontinuerligt betalat ut arvoden för undervisning ur våra kursbudgetar.
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| 10. |
- Kuklane, Kalev, et al.
(författare)
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A field study in dairy farms : thermal condition of feet
- 2001
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Ingår i: International Journal of Industrial Ergonomics. - 0169-8141 .- 1872-8219. ; 27:1, s. 367-373
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Tidskriftsartikel (refereegranskat)abstract
- The study aimed to find out the problems connected with feet during work in cold loose housing barns in wintertime. Thirteen dairy farms and 20 workers were studied. Skin temperatures and subjective responses were collected, and at the end of a work period the subjects filled in a questionnaire about the workday. The foot skin temperatures were measured on dorsal foot and second toe. Most of the workers used rubber boots. The ambient temperature outdoors varied from +5 to -11°C. Indoor temperatures could be the same as outdoors (cold barns and fodder storage) but also close to +30°C (milk room). The lowest mean foot and toe skin temperatures were 24.1±2.6°C and 16.0±1.4°C. The lowest measured values were 20.1°C and 12.8°C, respectively. The toe temperatures were on average 7.3°C colder than foot temperatures (mean 28.8°C). The low foot skin temperature was well related to cold sensation. Low toe temperatures fitted well with wetness sensation. On average the thermal sensation of feet over the work period was neutral. The lowest ratings were cold (-2). The combination of various environmental factors in farms complicates finding of perfect footwear for work. Recommendations on the choice of footwear and their care are given.
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