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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of the Ergonomics Society of Korea
Journal Basic Information
Journal DOI :
The Ergonomics Society of Korea
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Volume & Issues
Volume 22, Issue 4 - Nov 2003
Volume 22, Issue 3 - Aug 2003
Volume 22, Issue 2 - May 2003
Volume 22, Issue 1 - Feb 2003
Selecting the target year
A Comparison of EEG Response between TV Advertisements focused on Information Transfer and Emotional Reaction
Kim, Jeong-Ryong ; Park, Ji-Su ; Kim, Mi-Suk ;
Journal of the Ergonomics Society of Korea, volume 22, issue 4, 2003, Pages 1~13
DOI : 10.5143/JESK.2003.22.4.001
This study has investigated psychological responses to various TV advertisements by using EEG(electroencephalogram). In particular, it was assumed that the brain wave would show different patterns depending upon the style of the advertisement that could be categorized into two such as 'information transfer' type and 'emotional reaction' type. Ten healthy males participated in the experiment. EEG signal was extracted from six lobes such as right and left frontal, right and left occipital, right and left temporal while the subjects were watching TV advertisements. Alpha and beta relative power spectrum, and beta/alpha parameter were calculated to compare two kinds of advertisement each other. Additionally, subjective questionnaire was used to examine subject's response by using adjective words and preference test. In result, significant differences were found in left frontal and right occipital lobe in terms of beta/alpha between two different advertisements. And, subjects showed different preference between two advertisements. It was shown that the current method could analyze the brain reaction to advertisement quantitatively, that presented the possibility of using it to marketing research.
A Study on the Relationship between Psychosocial Factors and Symptoms of Work-related Musculoskeletal Disorders
Lee, Yun-Geun ; Park, Hui-Seok ;
Journal of the Ergonomics Society of Korea, volume 22, issue 4, 2003, Pages 15~25
DOI : 10.5143/JESK.2003.22.4.015
Recent studies indicate potential links between various psychosocial factors and work-related musculoskeletal disorders (WMSDs). In this research, the effects of job stressors on the WMSDs symptoms were investigated using questionnaire in the largest automotive company in Korea. It was found that perception of workload, over time and shift work, and working using powered hand tools were significant factors for the symptoms of WMSDs, along with smoking habit, periodic exercise, and interpersonal relationship. Practical applications of this research include practitioners taking into account psychosocial work factors and job stress in their efforts to reduce and control WMSDs.
Usability Evaluation of PDA Menu Design
Kim, Tae-Gyeong ; Han, Seong-Ho ; Yu, Gi-Dong ;
Journal of the Ergonomics Society of Korea, volume 22, issue 4, 2003, Pages 27~45
DOI : 10.5143/JESK.2003.22.4.027
PDAs(Personal Digital Assistants), one of the typical mobile devices, are examined in this study to identify the factors affecting their usability. This study focuses on the menu design of PDAs. Three factors including menu extension method, menu structure, and screen orientation were manipulated in a usability experiment. Task completion times, error rates, and degree of subjective satisfaction were measured. Guidelines for designing a PDA menu are proposed based on the experimental results.
Analysis of functional roles of ten trunk muscles in voluntary isometric exertion tasks
Song, Yeong-Ung ; Jeong, Min-Geun ;
Journal of the Ergonomics Society of Korea, volume 22, issue 4, 2003, Pages 47~57
DOI : 10.5143/JESK.2003.22.4.047
This study investigated the recruitment patterns of ten trunk muscles in isometric exertion tasks, focused on the functional roles (agonist or antagonist). Twelve male students performed maximum voluntary isometric exertion tasks towards six directions: flexion/extension, left/right lateral bending, and clockwise/counter-clockwise twisting. EMG signals from ten trunk muscles and exertion forces were collected. Normalized EMG (NEMG) values were calculated at 10, 20, 30, 40, 50, 60, 70, 80, and 90 %MVC. The subjects showed a limited capacity in producing twisting moments, approximately 50% of the extension moment, and 70% of lateral bending moments. EMG activity was dependent on the direction and magnitude of the exertion, and also on the functional role. The mean NEMG of agonist was 0.260 and 0.067 for antagonist. Agonists showed the highest mean NEMG in flexion (0.367), while antagonists showed the highest mean NEMG in twisting clockwise/counter-clockwise (0.090/0.106).
Development and application of a hierarchical estimation method for anthropometric variables
Ryu, Tae-Beom ; Yu, Hui-Cheon ;
Journal of the Ergonomics Society of Korea, volume 22, issue 4, 2003, Pages 59~78
DOI : 10.5143/JESK.2003.22.4.059
Most regression models of anthropometric variables use stature and/or weight as regressors; however, these 'flat' regression models result in large errors for anthropometric variables having low correlations with the regressors. To develop more accurate regression models for anthropometric variables, this study proposed a method to estimate anthropometric variables in a hierarchical manner based on the relationships among the variables and a process to develop and improve corresponding regression models. By applying the proposed approach, a hierarchical estimation structure was constructed for 59 anthropometric variables selected for the occupant package design of a passenger car and corresponding regression models were developed with the 1988 US Army anthropometric survey data. The hierarchical regression models were compared with the corresponding flat regression models in terms of accuracy. As results, the standard errors of the hierarchical regression models decreased by 28% (4.3mm) on average compared with those of the flat models.
Investigation on Status of Musculoskeletal Disorders for Industrial Safety Managers
Gi, Do-Hyeong ;
Journal of the Ergonomics Society of Korea, volume 22, issue 4, 2003, Pages 79~90
DOI : 10.5143/JESK.2003.22.4.079
The purposes of this study are to compare data for work-related musculoskeletal disorders(WMSDs) between Korea and USA, and to investigate status of WMSDs for industrial safety managers. The first part of this study was based on statistical data annually published by Minister of Labor of Korea and Bureau of Labor Statistics of USA. The latter was performed by using questionnaire survey for industrial safety managers in two regions. The results showed that the WMSDs incidence rate was significantly lower in Korea than in USA, and that there is big difference in the distribution of occupational illness by category of illness between Korea and USA. The questionnaire survey revealed that knowledge level about WMSDs was significantly affected depending upon corresponding companies' location and size, and that the low back pain was the most prevalent illness among varying WMSDs symptoms, followed by tendonitis/tenosynovitis, carpal tunnel syndrome, and tennis elbow. Based on this study, it is recommended that the future education/training for WMSDs focus on their preventative measures, methods/tools for identifying their risk factors, and diagnostic criteria for judging suspicious symptoms for industrial accidents, and that the governmental policy for WMSDs be changed towards financial supporting for preventive facilities, establishing objective diagnostic criteria and training for WMSDs.