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Analiza fotometryczna w ocenie jakości ergonomicznej zobrazowania monitorowego systemów sterowania ruchem kolejowym

Sitek I., Tomczuk P., Wychowański W.

Prace Naukowe Politechniki Warszawskiej. Transport

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2013

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z. 95

433--442

PL

W artykule przedstawiono narzędzia pomiarowe oraz metody analizy wyników pozwalające na ocenę jakości ergonomicznej zobrazowania monitorowego systemów sterowania ruchem kolejowym. Badania własne przeprowadzono na rzeczywistym systemie, realizującym zobrazowanie zgodnie z wymaganiami PKP PLK SA. Ponadto w artykule sformułowano kierunki oraz zakres dalszych badań. Przedstawiona metodyka badań jest wstępem do kompleksowej analizy fotometrycznej w obrębie zobrazowania monitorowego systemów sterowania i kierowania ruchem kolejowym oraz stanowisk operatorskich jako całości.

EN

The article presents measurement tools as well as methods of analysis which allow to evaluate the ergonomic quality of VDU-based visualization in train traffic control systems. Our research was carried out on real system, which performs visualization functions in line with requirements issued by PKP PLK SA. Moreover we describe in this paper the lines and the scope of future research. Research methodology, presented in this article is an introduction to a comprehensive photometric analysis of VDU-based visualization in train traffic control systems as well as the control stations.

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A Study on the Effects of Human Age, Type of Computer and Noise on Operators’ Performance of a Data Entry Task

Khan Z. A., Rizvi S. A. H.

International Journal of Occupational Safety and Ergonomics

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2010

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Vol. 16, No. 4

455--463

EN

The effects of human age, type of computer, and noise on computer operators’ performance of a data entry task were investigated. Twenty male subjects aged 10–55 were assigned into 4 age groups each consisting of 5 persons. They performed the task for 15 min on desktop and laptop computers in a sitting posture under varying levels of noise. The mean number of characters entered per minute (MNCEPM) was statistically analyzed. Operators in the 16–25 age group achieved the highest rate of data entry at each level of noise investigated. Operators performed better on desktop than on laptop computers. Their performance decreased when noise level increased from 82 to 92 dB(A), but it improved at 102 dB(A). The effects of age and noise were statistically significant. However, the effects of the type of computer, the interactions between age and type of computer, age and noise level, and type of computer and noise were not found to be statistically significant.

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A Study on the Effect of Human Laterality, Type of Computer and Noise on Operators’ Performance of a Data Entry Task

Khan Z. A., Rizvi S. A. H.

International Journal of Occupational Safety and Ergonomics

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2009

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Vol. 15, No. 1

53--60

EN

Effects of human laterality, type of computer and noise on computer operators’ performance of a data entry task were investigated. Seven right- and 7 left-motorsided male subjects performed the task on desktop and laptop computers in a sitting posture under varying noise levels. The mean number of characters entered per minute was statistically analysed. The right-motorsided operators entered more data than left-motorsided ones at each noise level. Operators performed better on desktop computers. Operators’ performance decreased when noise level increased from 82 to 92 dB(A) but it improved at 102 dB(A). Effects of laterality, type of computer and noise, and the interaction between laterality and noise were statistically significant. The interactions between laterality and type of computer, and type of computer and noise were statistically insignificant. Laterality was statistically significant at all noise levels and noise was statistically significant for right motor-sided operators only.

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Prevention of Deep Vein Thrombosis in VDU Work

Mitsuya R., Ebine Y., Nozaki M., Noro K.

International Journal of Occupational Safety and Ergonomics

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2003

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Vol. 9, No. 4

393--403

EN

This paper introduces preventive measures against Deep Vein Thrombosis (DVT) during Visual Display Units (VDU) work. Four experiments were conducted in order to address this issue. The effectiveness of the preventative measures was evaluated by measuring foot swelling. The results indicated that the following 3 methods would be particularly effective: (a) occasionally adopting a reclining posture with a footrest, (b) 10-min walking every 50–60 min of VDU work, and (3) stretching. In addition we predicted that taking a deep breath could sometimes be effective. DVT is likely to occur in daily life and its incidence can be related to the long-term postures associated with VDU work. This paper suggests that VDU workers should be aware of the risk of DVT and take preventative measures.