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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 21, Issue 3 - Oct 2002
Volume 21, Issue 2 - Jul 2002
Volume 21, Issue 1 - Apr 2002
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Research on EEG Parameters for Movement Prediction Based on Individual Difference of Athletic Ability and Lateral Asymmetry of Hemisphere
Whang, Min-Cheol ; Lim, Joa-Sang ;
Journal of the Ergonomics Society of Korea, volume 21, issue 3, 2002, Pages 1~12
DOI : 10.5143/JESK.2002.21.3.001
Recently, EEG gains much interests due to its applicability for people to communicate directly with computers without detouring motor output. This study was designed to address this issue if EEG can be successfully used to predict limb movement. It was found that ordinary people appeared to show significant difference in brainwaves between right hand (foot) and left hand (foot) movement. Lateral asymmetry was also found to interact significantly with EEG. Further research is urged with refined method to provide more useful insights into EEG-based BCI.
Human Performance Analysis of Emergency Tasks in Nuclear Power Plant
Jung, Won-Dae ; Park, Jin-Kyun ; Kim, Jae-Whan ;
Journal of the Ergonomics Society of Korea, volume 21, issue 3, 2002, Pages 13~24
DOI : 10.5143/JESK.2002.21.3.013
Reduction and prevention of human error is one of the major interests for the enhancement of system safety and availability in Nuclear Power Plants (NPPs). As human beings have become the weak point in the system safety, a systematic evaluation on human performance during emergency situation should be performed in advance to identify the potential vulnerability of human tasks. Though the data gathering and analysis from real field is an important precondition, there were no available data in nuclear field of korea. This paper presents the result of human performance analysis on emergency tasks in NNPs. Firstly, a task analysis was performed to identify the characteristics of operator tasks during emergency condition and to classify them into a set of generic emergency tasks. Secondly, simulation data were collected and analyzed for the emergency tasks using the full scope simulator of Younggwang NPPs. The analyzed human performance information cover the event diagnosis time, the execution time of each procedural step, observation parameters, typer of irrelevant response, pattern of communication among staffs, and so on. These performance data would be used for human reliability analysis and the research of human error as technical bases.
Cognitive Model-based Evaluation in Dynamic Traffic System
Kang, Myong-Ho ; Cha, Woo-Chang ;
Journal of the Ergonomics Society of Korea, volume 21, issue 3, 2002, Pages 25~34
DOI : 10.5143/JESK.2002.21.3.025
The road sign in dynamic traffic system is an important element which affects on human cognitive performance on driving. Web-based vision system simulator was developed to examine the cognition time of the road sign in dynamic environment. This experiment the cognition time of the road sign in dynamic environment. This experiment was designed in with-subject design with two factors: vehicle speed and the amount of information of the traffic sign. It measured the cognition time of the road sign through two evaluation methods: the subjective test with vision system simulator and computational cognitive model. In these two evaluations of human cognitive performance under the dynamic traffic environment, it demonstrated that subject's cognition time was affected by both the amount of information of traffic sign and driving speed.
A Study on Changes in Human Sensibility Evoked by Imagination
Chung, Soon-Cheol ; Min, Byung-Chan ; Jun, Kwang-Jin ; Lee, Bong-Soo ; Yi, Jeong-Han ; Kim, Chul-Jung ;
Journal of the Ergonomics Society of Korea, volume 21, issue 3, 2002, Pages 35~46
DOI : 10.5143/JESK.2002.21.3.035
In this study, emotion changes were induced by four imaginations- pleasantness, unpleasantness, arousal, relaxation and it was examined using subjective evaluation and analysis of the physiological signals of the central and autonomic nerve systems whether the intended emotions were appropriately achieved, and whether these emotion changes could be distinguished from the analysis of physiological signals. Each of the four imaginations was implemented on 32 subjects for 30 seconds, while that Electroencephalogram (EEG), Eelectrocardiogram (RSP) were measured, and a subjective evaluation was implemented following the completion of the measurement. The analysis of the subjective evaluation revealed that the subjects underwent the four clearly differentiated imaginations, and the pleasantness level was classified into four imagination stages, pleasantness>relaxation>arousal=comfort>unpleasantness, and arousal level was classified into four imagination stages in the order of arousal>unpleasantness
pleasantness>comfort>relaxation. The analysis of the EEG revealed that three stages of pleasantness level, pleasantness>relaxation=arousal=comfort>unpleasantness were classified from the values of
, and about tour distinguishable stages of arousal level were obtained from the autonomic nervous system responses following the order of arousal>unpleasantness
pleasantness> comfort> relaxation. It was found that intended emotion could be induced from the imagination, and these induced emotion changes could be differentiated using the physiological signals of the EEG and autonomic nervous system.
The study of the relationship between the similarity of cognitive map and the mental workload
Yu, Seung-Dong ; Park, Peom ;
Journal of the Ergonomics Society of Korea, volume 21, issue 3, 2002, Pages 47~58
DOI : 10.5143/JESK.2002.21.3.047
The similarity of shape of shape of interface between human cognitive map and real product is the important factor to determine the human performance. Nevertheless, the degree of similarity between these has not been defined quantitatively in recent studies. Therefore, in this study, the cognitive map and the mental workload were measured by SMM(Sketch Map Method) and RNASA-TLX(Revision of NASA-Task Load Index). And the numerical expression of the accuracy point was suggested for the quantitative calculation of relative positional similarity between cognitive map and real product. In the experiment, nine subjects were participated and two kinds of vehicles were used. Mental workload was mental workload was measured immediately after the road test. The result of analysis on the relationship between accuracy and mental workload shows that the negative correlation exists on each vehicle, and the lower score of mental workloads id measured on the vehicle that has the higher score of accuracy between two vehicles.
A Study on the Development of the Automatic Drafting of Slacks Pattern for Elementary School Girls and the Evaluation of Fitness of Slacks Using 3D Scanner
Suk, Eun-Young ; Kim, Hae-Kyung ;
Journal of the Ergonomics Society of Korea, volume 21, issue 3, 2002, Pages 59~79
DOI : 10.5143/JESK.2002.21.3.059
The purposes of the study were to present the optimum slacks pattern for elementary school girls and to compare and evaluate wearing ease of the slacks. 3D scans using the Cyberware PS motion platform were carried out for 3 subjects who have different body type. The automatic drafting method was programmed by AutoLISP in CAD. Wearing tests using 3D Scanner was done for evaluation of fitness of slacks. Regression analysis, analysis of variance and post-hoc test were performed for statistical analysis of the data by SPSS program. The procedure and results were as follows: The slacks construction components for pattern drafting were derived from 10 horizontal section maps obtained from 3D scans. The automatic drafting was based on the measurements of slacks construction components and the curve of crotch line. The crotch line was drafted using of the arc function in AutoCAD. The total crotch length was calculated using the multiple regression equation. Wearing test represented that the slacks pattern developed to accomodate individual body measurements was estimated more highly than existing patterns.