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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of the Ergonomics Society of Korea
Journal Basic Information
Journal DOI :
The Ergonomics Society of Korea
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Volume & Issues
Volume 29, Issue 6 - Dec 2010
Volume 29, Issue 5 - Oct 2010
Volume 29, Issue 4 - Aug 2010
Volume 29, Issue 3 - Jun 2010
Volume 29, Issue 2 - Apr 2010
Volume 29, Issue 1 - Feb 2010
Selecting the target year
Current Trends and Future Issues of Automotive Ergonomics
Jang, Chee-Hwan ; Lim, Sung-Hyun ;
Journal of the Ergonomics Society of Korea, volume 29, issue 1, 2010, Pages 1~5
DOI : 10.5143/JESK.2010.29.1.001
The purpose of the paper is to review current trends and future issues of automotive ergonomics. The current trends include 1) universal design considering for regional differences, elderly drivers, female drivers, 2) quantification of driver's discomfort 3) trade-off between design trends and comfort, 4) digital ergonomic evaluation with digital human models 5) optimization of driver's interface. The future issues of automotive ergonomics cover 1) intelligent driver assistance system 2) Fun-to-drive and 3) differentiation from other vehicles based on ergonomics.
The Role of Ergonomics in the Vehicle Development Stage
Seo, Sang-Yeol ; Shim, Jun-Youb ; Choi, Tae-Hyun ;
Journal of the Ergonomics Society of Korea, volume 29, issue 1, 2010, Pages 7~16
DOI : 10.5143/JESK.2010.29.1.007
The great growth and development in the automobile industry have been made at the hardware site consisting of Car over about 100 years. The biggest key of future automobile industry with fierce competition is up to product development with high customer satisfaction through the ergonomics that is applied to car efficiently and effectively. Until Now, The Study of Ergonomics has been used for effective Car design. But At the 21st Century automotive, it will be used for Survival through the differentiation and merchantability of vehicle in highly competitive. That is a big difference. We will review the role of ergonomics in the vehicle development stage with Ssangyong Case.
Development of Vehicle Environment for Real-time Driving Behavior Monitoring System
Kim, Man-Ho ; Son, Joon-Woo ; Lee, Yong-Tae ; Shin, Sung-Heon ;
Journal of the Ergonomics Society of Korea, volume 29, issue 1, 2010, Pages 17~24
DOI : 10.5143/JESK.2010.29.1.017
There has been recent interest in intelligent vehicle technologies, such as advanced driver assistance systems (ADASs) or in-vehicle information systems (IVISs) that offer a significant enhancement of safety and convenience to drivers and passengers. However, unsuitable design of HMI (Human Machine Interface) must increase driver distraction and workload, which in turn increase the chance of traffic accidents. Distraction in particular often occurs under a heavy driving workload due to multitasking with various electronic devices like a cell phone or a navigation system while driving. According to the 2005 road traffic accidents in Korea report published by the ROad Traffic Authority (ROTA), more than 60% of the traffic accidents are related to driver error caused by distraction. This paper suggests the structure of vehicle environment for real-time driving behavior monitoring system while driving which is can be used the driver workload management systems (DWMS). On-road experiment results showed the feasibility of the suggested vehicle environment for driving behavior monitoring system.
Effects of Design Factors of the Instrument Cluster Panel on Consumers' Affection Applying Robust Design
Jung, Ga-Hun ; Park, Sung-Joon ; Kim, Seong-M. ; Jung, Eui-S. ;
Journal of the Ergonomics Society of Korea, volume 29, issue 1, 2010, Pages 25~31
DOI : 10.5143/JESK.2010.29.1.025
It is known from consumer surveys that the interior design of cars greatly influences on consumers' affection. Most notably, the instrument panel which occupies the driver's attention while driving would be one of the main components that affect consumer's affection, but the designer does not often put due importance to this design component. The purpose of this study is to define consumers' affection on the instrument cluster panel in terms of its design factors: color of panel lighting and layout of meters as independent factors. Semantic differentials or affective adjectives that are related to the instrument panel were first derived from surveys, existing studies and the available literature. Then, representative affective factors were drawn using factor analysis and multi-dimensional scaling (MDS). Evaluation of the instrument panel was performed and analyzed by Taguchi's robust design to provide more robust results under various noise factors which are color and material of car interior. Experiment revealed that consumers had five affective factors on the instrument panel and luxurious, charming, and visible affections are grouped into a factor and unique and dynamic affections in another factor. Evaluation of the instrument panel by Taguchi's robust design found that the white color of panel lighting and the panel with four meters was the most preferred design in terms of both the affection of luxury and uniqueness.
Development of Iso-Perception Maps to Improve the Driver Workspace Using Drivers' Static Behaviors
Ahn, Sung-Yong ; Kim, Han-Woong ; Han, Mi-Ran ; Park, Peom ; Kyung, Gyou-Hyung ;
Journal of the Ergonomics Society of Korea, volume 29, issue 1, 2010, Pages 33~37
DOI : 10.5143/JESK.2010.29.1.033
This study was aimed at developing 1) iso-perception maps for various groups of drivers in terms of age, gender, and anthropometry and 2) the experiment framework required for obtaining subjective and objective measures. A total of 9 maps, which describe drivers' perceptions regarding their static behaviors inside a typical mid-size sedan, can be used to improve the utilization of the limited driver workspace, and to select better design alternatives for occupant packaging. An adjustable seating buck,
-camera motion capture system (Vicon), and
-channel EMG system were used for the experiment. Each iso-perception map was developed while H-PT, steering wheel center, or TGS knob center was moved to each of pre-defined positions relative to driver-selected positions. Adjustable ranges or positions of the seat, steering wheel, and TGS lever described in iso-perception maps can be used to determine better package layout alternatives.
A Study on Designing of a Menu Structure for the Instrument Cluster IVIS using Taguchi Method
Hong, Seung-P. ; Kim, Seong-M. ; Park, Sung-Joon ; Jung, Eui-S. ;
Journal of the Ergonomics Society of Korea, volume 29, issue 1, 2010, Pages 39~46
DOI : 10.5143/JESK.2010.29.1.039
The growth of function in vehicle needs complex display and control system, the In-Vehicle Information System(IVIS). Although current IVISs are widely implemented in commercial vehicles, a new form of IVIS has been recently studied in order to reduce drivers' workloads. The purpose of this study is to suggest an appropriate menu structure of a new type IVIS, to be implemented on the instrument cluster panel, using Taguchi's parameter design. In the research, firstly, functions were selected that are appropriate to control through the instrument cluster among existing functions of current IVISs by quantitative evaluation of ergonomic principles. Then, menu structure alternatives were extracted by investigating priorities to those functions selected. Finally, menu structure alternatives were evaluated through an experiment and suggest the most appropriate one by applying Taguchi's parameter design. Taguchi method was used not only for planning an experiment but also evaluating alternatives. SN ratios were a key value to evaluate the alternatives and to find the most proper one. Through the research, the most appropriate menu structure for the instrument cluster IVIS was finally suggested among the alternatives and it is expected that the results of this research could provide a guideline to the instrument cluster IVIS.
Development of an Analysis System for Biosignal and Driving Performance Measurements
Lee, Won-Sup ; Park, Jang-Woon ; Kim, Su-Jin ; Yoon, Sung-Hye ; Yang, Xiaopeng ; Lee, Yong-Tae ; Son, Joon-Woo ; Kim, Man-Ho ; You, Hee-Cheon ;
Journal of the Ergonomics Society of Korea, volume 29, issue 1, 2010, Pages 47~53
DOI : 10.5143/JESK.2010.29.1.047
An analysis of biosignal and performance data collected during driving has increasingly employed in research to explore a human-vehicle interface design for better safety and comfort. The present study developed a protocol and a system to effectively analyze biosignal and driving performance measurements in various driving conditions. Electrocardiogram (ECG), respiration rate (RR), and skin conductance level (SCL) were selected for biosignal analysis in the study. A data processing and analysis protocol was established based on a comprehensive review of related literature. Then, the established analysis protocol was implemented to a computerized system so that immense data of biosignal and driving performance can be analyzed with ease, efficiency, and effectiveness for an individual and/or a group of individuals of interest. The developed analysis system would be of use to examine the effects of driving conditions to cognitive workload and driving performance.
A Study on Physiological Signal Changes Due to Distraction in Simulated Driving
Park, Sung-Soo ; Hu, Hwan ; Lee, Woon-Sung ;
Journal of the Ergonomics Society of Korea, volume 29, issue 1, 2010, Pages 55~59
DOI : 10.5143/JESK.2010.29.1.055
Driver distraction is a major cause of traffic accidents in Korea. Various measures are being introduced to detect and warn driver distraction. The objective of this research is to investigate changes in driver's physiological signals due to distraction during driving. Driving simulator experiments have been carried out to investigate discrepancy in EEG signals among normal driving, DMB watching during driving, and cellular phone use during driving. Based on the discrepancy, combination of EEG signals have been identfied as candidate variables for detecting driver distraction. Statistical analysis has been carried out to verify their statistical significance.
Ergonomic Evaluation of Convenient Appliances for Elderly Driver's Ingress/Egress
Park, Woo-Chul ; Yang, Young-Seon ; Jang, Chee-Hwan ; An, Dae-Jin ; Lim, Sung-Hyun ;
Journal of the Ergonomics Society of Korea, volume 29, issue 1, 2010, Pages 61~66
DOI : 10.5143/JESK.2010.29.1.061
The objective of this paper is to study the usability of the ingress/egress of elderly people, and analyze the physiological workload electromyography (EMG). We investigated the factors of discomfort while the elderly people are using the ingress/egress. Experiments were performed using a seating buck with 22 elderly participants (over 65 years old). The results showed that different muscles are activated during ingress and egress. A system called "easy access" was found which helps to access easily when a driver gets into a car. The current easy access was compared a newly proposed one. It was found that elderly people use less muscle during in/egress in the new easy access system.
A Study on Eye Point and Field of View of Older Drivers
Lee, Seong-Il ; Choi, Ji-Ho ; Hwang, In-Jun ; Song, Kyo-Hyun ;
Journal of the Ergonomics Society of Korea, volume 29, issue 1, 2010, Pages 67~71
DOI : 10.5143/JESK.2010.29.1.067
This study examined the field of view of older drivers based on their eye points. The subjects were 25 people whose age was over 65 years and 10 contrasting subjects on their 20s. For the experiment, we expanded the width of the A-pillar of a test vehicle. With a measuring apparatus designed for the study, we analyzed 3 axes of coordinates from glabella to a fixed point of the vehicle that would be used as CAD data of vehicle design. Result shows that average eye point of the older subjects was located significantly farther from the seat than that of the 20s approximately by 31.62mm(p=0.05). It was also found that the Binocular FOV was not significantly different between the older subjects and the 20s(p=0.85), and the effect of the width of the A-pillar on the FOV could not be found. We also measured the left and right side of the Ambinocular FOV of the older subjects. It was found that the older subjects had much wider visual angle than the 20s by 2.84 degree (F=4.78, p=0.01) on the left side, while the 20s showed significantly wider average angle than the older subjects by about 4.88 degree (F=4.78, p<0.05) on the right side. The results of this study can be used to improve the FOV based on the optimal eye points when designing a vehicle for older drivers.
Characteristics of Elderly Drivers' Reach Motion to Seat Belt
Choi, Woo-Jin ; Kwak, Seung-Ho ; Choi, Hyung-Yun ;
Journal of the Ergonomics Society of Korea, volume 29, issue 1, 2010, Pages 73~82
DOI : 10.5143/JESK.2010.29.1.073
The purpose of this study is to understand motion characteristics of older drivers during reaching seat belt compared to young drivers and to provide design guidelines in order to reduce discomfort for the elderly. The whole body kinematics of each subject was captured using 12-camera motion analysis system. Subjective ratings on discomfort levels were obtained simultaneously using a questionnaire. This paper first presents the result of motion characteristics of elderly drivers' reach motion to seat belt. Compared to young drivers, older drivers performed seat belt reach motions less efficiently and moved slower due to mostly the movement error. Older drivers also made use of reduced joint range of motion in cervical left rotation, lumbar left rotation and right shoulder adduction, which can be explained by their reduced active range of motions (AROMs). To compensate for their reduced joint range of motion, older drivers rotated pelvis more.
A Study of Transports Productivity by using Car and Railway
Song, Yong-Soo ; Kwon, Soon-Bark ; Park, Jae-Hyun ; Han, Seong-Ho ;
Journal of the Ergonomics Society of Korea, volume 29, issue 1, 2010, Pages 83~91
DOI : 10.5143/JESK.2010.29.1.083
Recently study on passenger' activities found that many passengers were ride in kinds of transport, e.g. car and railway while business trip. Usually choice of transport is determined by the transportation of passengers, depending on the purpose of travel. A study was therefore set up to study how efficient influence the transports about business trip. The study involved 4 subjects (4m) which divided into four groups during two day. We evaluate about the transport productivity by each day by using the car and railway. The transport productivity of car and railway was valued in HRV and Stroop Color Word Interference Test. The results showed significant differences between the car and railway. The subjects reported that use of railway is greater transport productivity than the car.
User Analysis for Shower Chair Design
Jung, Kwang-Tae ; Song, Bok-Hee ; Shin, Dong-Jin ; Chun, Keyoung-Jin ; Won, Byeong-Hee ; Hong, Jae-Soo ;
Journal of the Ergonomics Society of Korea, volume 29, issue 1, 2010, Pages 93~100
DOI : 10.5143/JESK.2010.29.1.093
In this study, user survey and some experiments were carried out to identify older adults' characteristics and needs for shower chair design. Firstly, the category and design components of shower chair were analyzed through product analysis. Secondly, older adults' needs for shower chair were identified through user interview and observation. Thirdly, experiment to measure older adults' motion, EMG, and body pressure while using shower chair was carried out and then older adults' characteristics for the use of shower chair were identified. Finally, the direction of design for shower chair was proposed to improve older adults' satisfaction.
A Study on the Work Ability Index by the Type of Business, Age and Job
Lee, Yu-Jeong ; Chang, Seong-Rok ;
Journal of the Ergonomics Society of Korea, volume 29, issue 1, 2010, Pages 101~105
DOI : 10.5143/JESK.2010.29.1.101
According to the Korea National Statistical Office data in 2008, the population over ages of 65 years would possess to 10.7% whole population of Korea in 2009 denoting Korea is already in the aging society. It is well-known that the possibility to work longer and to live better is highly related to the work ability of individuals. The objective of this study is to evaluate the work ability of each aged group using the Work Ability Index(WAI) in the shipbuilding industry, machinery industry and Korea housing corporation, and to assess the effect of the type of business, age and job on the WAI score. The results showed that no significant difference was identified on the effect of aging although work ability of some group(over 55 years) was a little higher than that of others. Also, type of business and job had a significant effect on WAI score. These results suggested that the work ability is not necessarily related to aging in Korean society. One possible explanation for this might be different cultural characteristics of Korean society.
Subjective Assessments and Analyses of Letter Sizes Under Black and White Contrasts for Various Font Sizes Through the Irradiation-effect
Kong, Yong-Ku ; Kim, Dae-Min ; Sohn, Seong-Tae ; Han, Jun-Goo ;
Journal of the Ergonomics Society of Korea, volume 29, issue 1, 2010, Pages 107~112
DOI : 10.5143/JESK.2010.29.1.107
Irradiation is a phenomenon that causes white objects on a black background to appear to spread into near dark backgrounds, but the reverse is not. In this study, the effects of font size and thickness of letters on the legibility were investigated in combinations of black letters/white background as well as white letters/black background. Ten subjects who had been no disease of eyes and their eyesight is over 1.0 were recruited and tested subjective assessments of letter sizes for various font sizes (2pt to 80pt) and thickness of letters (normal, bold) under 600lux illumination and 50cm-distance of eyes and target letters for this study. Ming-style font type which was generally used in text of books, papers, and journals were tested in this study. Results showed that generally people subjectively assessed the white letters on black background (W/B) were larger sizes of letters than the black letters on white background (B/W) even both letter sizes were the same in both normal and bold thickness of letters. This phenomenon was happened in case of only over 22 font size (with border line about 22~24pts). Less than 22 font sizes, many people reported that both letters (W/B and B/W) are looks the same sizes in normal as well as bold letters. These findings were interpreted also by the irradiation phenomenon and more detail information was presented in this manuscript.
A Study on Evaluation of Human Arousal Level using PPG Analysis
Kim, Chi-Jung ; Whang, Min-Cheol ; Kim, Jong-Hwa ; Woo, Jin-Cheol ; Kim, Yong-Woo ; Kim, Ji-Hye ;
Journal of the Ergonomics Society of Korea, volume 29, issue 1, 2010, Pages 113~120
DOI : 10.5143/JESK.2010.29.1.113
This research is to evaluate the arousal level by using cardiovascular response. PPG was used in this study as one of the method of measuring it rather than ECG (Electrocardiography) for the purpose of solving ergonomic problem of sensing. The participants were in the age group of 20 (mean=24, standard deviation=1.25): five men and five women. Each experiment composed with four identical sets. First, a black screen was displayed for 30 second rest. Then, the prepared 6 pair images were randomly presented for 10 second stimulation and for 30 second non-stimulation. PPG was measured on the earlobes of experimenters at 200Hz sampling frequency. PPG amplitude, PPI(Pulse to Pulse Interval), and PRV(Pulse Rate Variability) were analyzed according to arousal level. T-test was performed to compare between the PPG variables of rest and relaxation, rest and arousal, and relaxation and arousal. Relative to the rest state, PPG amplitude decreased in relaxed state and increased in aroused state. Relative to the rest state, PPI decreased in both emotional states. However, more significant decline was observed in aroused state. PRV's LF and HF were used in the form of LF/HF to compare between the relaxed and the aroused state. Therefore, PPG signal showed significant differences between relaxed and aroused state. In conclusion, evaluation of human arousal level used in the PPG analysis demonstrated that PPG has better usability and comforter measurement than ECG and is clearly an alternative method of measuring arousal level.
The Study on Affecting Subject Accomplishment by Noise
Kim, Sung-Cheol ; Park, Keun-Sang ; Kim, Kwan-Woo ;
Journal of the Ergonomics Society of Korea, volume 29, issue 1, 2010, Pages 121~128
DOI : 10.5143/JESK.2010.29.1.121
The purpose of this study is to confirm the impact of noise on subject accomplishment as well as physical/mental load, and evaluates the effects of noise-masking and earplug. 15 college students participate in the test, and the comparison is performed by executing four projects according to conditional categories of noise environments; control condition, noise condition, earplug condition, and noise-masking condition. Noise in the field site of the H manufacturer was used as the noise source, the general job aptitude test which consist of linguistic ability, math ability, perception ability, reasoning ability was used as the task of this project. To estimate physical/mental load evaluation, we used the heart rate R-R interval, Criteria flicker fusion frequency(CFF) and measured NASA-TLX workload for subjective evaluation. As the research outcome, it is shown that there is a meaningful difference for the project task score, dropping rate of CFF, the heart rate, and NASA-TLX subjective evaluation score according to conditions of noise environment. Therefore, the impact of noise on capability of subject accomplishment as well as physical/mental load was confirmed along with the effects of using earplug and noise-masking.
Suggestion of a New Writer's Guideline to Reduce Human Errors Found in the Emergency Operation Procedures of a Nuclear Power Plant
Lee, Dhong-Ha ; Jang, Tong-Il ; Lee, Yong-Hee ;
Journal of the Ergonomics Society of Korea, volume 29, issue 1, 2010, Pages 129~138
DOI : 10.5143/JESK.2010.29.1.129
Gori-I nuclear power plant has been examining the effectiveness and efficiency of the current emergency operation procedures from human factors viewpoint. Previous study showed that some mistakes that the procedures did not comply with the writers' guidelines. Reviewing the current writers' guidelines for emergency operating procedures revealed that they lack of some important human factors rules such as enumeration of switching conditions and detailed action requirements, definite expression for setup points, description for anticipated results, and recommendation for use of present tense, affirmative sentence and active voice. This study suggested a new classification system for the writers' guideline contents supplementing the deficiencies of the current emergency operation procedure text.
The Study on the Moving Rail-chair and Electromotive Scissors for Preventing of the Musculoskeletal Disorders
Chae, Hye-Seon ; Kim, Kwan-Woo ; Lee, Kyung-Suk ; Kim, Chang-Han ; Lee, Kyoung-Mi ; Choi, Youn-Woo ; Park, Keun-Sang ;
Journal of the Ergonomics Society of Korea, volume 29, issue 1, 2010, Pages 139~144
DOI : 10.5143/JESK.2010.29.1.139
Grape weeding work requires Ergonomics improvement, because it performs motion likely to cause Musculoskeletal disorders (MSDs) repeatedly and continuously. The object of this study was to reject workload in Grape weeding works raised MSDs with the Moving Rail-chair and Electromotive Scissors. As objective method of analysis, we used heart rate, EMG, RULA, REBA. As subjective method of analysis, we used questionnaire that indicate lethargy area of body, pain of muscle and bone. As a result, working with Moving Rail-Chair and Electromotive Scissors is lower heart rate and EMG than typical working. Also for the subjective evaluation, reducing of neck and shoulder movement makes improve workload.
Comparison of Lifting and Lowering Activity based on Biomechanical, Physiological, Psychophysical Criteria
Kim, Hong-Ki ;
Journal of the Ergonomics Society of Korea, volume 29, issue 1, 2010, Pages 145~153
DOI : 10.5143/JESK.2010.29.1.145
Activity of lifting has been a major issue in many research area related in manual materials handling tasks. However, the opposite activity of lifting, lowering, has received much less attention. It is known that 52% of all box-handling tasks were lowering in nature. The difference in stress between lifting and lowering activity is not well understood. A simple assumption that these two activities are very similar has been established and widely used. However, this simple assumption may be questionable. The objective of this study was to compare a lifting activity and a lowering activity based on the three different ergonomic approaches; (1) biomechanical, (2) physiological, (3) psychophysical approach. It was found that the stress of lowering activity was from 65% to 93%, from 87% to 97%, and from 87% to 96% according to the biomechanical, physiological, and psychophysical point of view, respectively. It is concluded from the result of this study that the stress of lowering activity is lower than that of the lifting activity. The maximum compressive force on the lumbro-sacral joint (L5/S1) was 158% and 108% respectively, for lifting and lowering activity of which the work load is the 58% of Action Limit. It is suggested that the NIOSH AL and RWL and biomechanical criteria should be reconsidered especially for the low frequency of lifting activities.