Managers usually can justify financially supporting a proposed ergonomics intervention only when it is supported by a sound cost benefit analysis. The factors to consider and sources of information for calculating the costs and benefits of proposed ergonomic projects are described. Based upon his review of numerous ergonomics projects, the common characteristics of successful ergonomics interve...

The standard non-surgical treatment for periodontal disease is supraand subgingival scaling to disrupt and thoroughly remove biofilm, calculus deposits, periodontal pathogens, and debris. Instrumentation options include hand scalers and ultrasonic scalers. Considerations in the choice of method include efficacy, efficiency, safety, patient comfort, and ergonomics. Ultrasonic devices have enable...

This paper aims to demonstrate the effects of measurement errors on psychometric measurements in ergonomics studies. A variety of sources can cause random measurement errors in ergonomics studies and these errors can distort virtually every statistic computed and lead investigators to erroneous conclusions. The effects of measurement errors on five most widely used statistical analysis tools ha...

The aims of this study were to investigate work related and individual factors as predictors of insident neck pain among video display unit (VDU) workers, to assess the effects of an ergonomic intervention and education on musculoskeletal symptoms, and to study the repeatability and validity of an expert assessment method of VDU workstation ergonomics. A method to assess the risk factors for up...

There are so many definitions for ergonomics terms such as human factors, human factors engineering, human engineering, human factors psychology, engineering psychology, applied ergonomics, occupational ergonomics, industrial ergonomics and industrial engineering. The most inclusive terms are ergonomics and human factors. Both represent the study of work and the interaction between people and t...

Background: Until recently, data applied for reference of Balinese workers in their work stations and processes, including anthropometric data still applying secondary data source from literature review. This was probably inappropriate due to different size, since the literature data generally on the basis of western size of anthropometry. The objective of this research, therefore, was to estab...

A holistic review of ergonomic history shows that science remains important for general occupational health and safety (OSH), the broad society, culture, politics and the design of everyday things. Science provides an unconventional and multifaceted viewpoint exploring ergonomics from a social, corporate and OSH perspective. Ergonomic solutions from this mindset may redefine the science, and it...

Several published case studies demonstrate that ergonomics considerations might lead to change the workstations layout and task time values. Traditional procedures take into account only task time analysis and precedence relations, while human postures evaluation is often not integrated in these techniques. Up to now many industrial fields require a systematic approach to allow assembly system ...