Wyniki wyszukiwania - BazTech

1

Workspace design for crane cabins applying a combined traditional approach and the Taguchi method for design of experiments

Spasojevic Brkic V. K., Veljkovic Z. A., Golubovic T., Brkic A. D., Kosic Sotic I.

International Journal of Occupational Safety and Ergonomics

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2016

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Vol. 22, No. 2

228--240

EN

Procedures in the development process of crane cabins are arbitrary and subjective. Since approximately 42% of incidents in the construction industry are linked to them, there is a need to collect fresh anthropometric data and provide additional recommendations for design. In this paper, dimensioning of the crane cabin interior space was carried out using a sample of 64 crane operators’ anthropometric measurements, in the Republic of Serbia, by measuring workspace with 10 parameters using nine measured anthropometric data from each crane operator. This paper applies experiments run via full factorial designs using a combined traditional and Taguchi approach. The experiments indicated which design parameters are influenced by which anthropometric measurements and to what degree. The results are expected to be of use for crane cabin designers and should assist them to design a cabin that may lead to less strenuous sitting postures and fatigue for operators, thus improving safety and accident prevention.

2

Effects of multitasking on operator performance using computational and auditory tasks

Fasanya B. K.

International Journal of Occupational Safety and Ergonomics

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2016

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Vol. 22, No. 3

405--413

EN

This study investigated the effects of multiple cognitive tasks on human performance. Twenty-four students at North Carolina A&T State University participated in the study. The primary task was auditory signal change perception and the secondary task was a computational task. Results showed that participants' performance in a single task was statistically significantly different from their performance in combined tasks: (a) algebra problems (algebra problem primary and auditory perception secondary); (b) auditory perception tasks (auditory perception primary and algebra problems secondary); and (c) mean false-alarm score in auditory perception (auditory detection primary and algebra problems secondary). Using signal detection theory (SDT), participants' performance measured in terms of sensitivity was calculated as −0.54 for combined tasks (algebra problems the primary task) and −0.53 auditory perceptions the primary task. During auditory perception tasks alone, SDT was found to be 2.51. Performance was 83% in a single task compared to 17% when combined tasks.

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Anthropometric hand dimensions in a population of Iranian male workers in 2012

Mirmohammadi S. J., Mehrparvar A. M., Mostaghaci M., Davari M. H., Bahaloo M., Mashtizadeh S.

International Journal of Occupational Safety and Ergonomics

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2016

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Vol. 22, No. 1

125--130

EN

Background. The mismatch between the hand size of workers and the size of industrial instruments is a growing concern; it can lead to various musculoskeletal complications. Currently, there are few reliable studies available to address this concern in Iran. This study was conducted to measure 30 upper-extremity parameters in a group of Iranian industrial workers. Methods. This study is a cross-sectional study on 529 workers. The study population was randomly selected from male Iranian industrial workers who were referred to the Yazd hospital occupational medicine clinic for surveillance evaluations. Results. The M (SD) age of the participants was 30.13 (8.29) years. Statistical analysis was performed using the mean, standard deviation and 5th, 50th and 90th percentiles for each measured hand dimension. A considerable number of dimensions were significantly different between the measurements of right and left hands in each examinee. The results showed significant differences between Iranian hand size and that of other populations. Conclusion. This study provided a valuable databank of hand dimensions in a population of Iranian male workers. These data can be used by manufacturers in designing high-quality hand-tools and industrial gloves, taking into consideration Iranian worker characteristics.

4

An Ergonomics Evaluation of Certain ATM Dimensions

Al-Saleh K., Bendak S.

International Journal of Occupational Safety and Ergonomics

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2013

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Vol. 19, No. 3

347--353

EN

Although millions of automatic teller machines (ATMs) are currently used all over the world, users of ATMs still have usability problems including inappropriate user-ATM interaction, display problems and others. Many developed countries already have standards in place for ATMs. However, this is not the case in many other countries. This paper aims to assess certain dimensions of ATM machines and their suitability for users in Middle Eastern countries using anthropometric measurements of the user population taking Saudi Arabia as a case study. Dimensions of all ATMs used in Saudi Arabia were measured and compared with recommended dimensions based on anthropometric measurements of the user population. Results show that there is a mismatch between the dimensions of ATMs used in Saudi Arabia and the recommended dimensions based on the user population. Practical recommendations are given as to improve the usability of ATMs in Saudi Arabia and other Middle Eastern countries.

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Pole magnetostatyczne – źródła, pomiary, ocena

Gryz K., Karpowicz J.

Bezpieczeństwo Pracy : nauka i praktyka

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2000

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nr 12

11-15