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인지지도 유사도와 정신적 작업부하와의 관계에 대한 연구
유승동,박범,Yu, Seung-Dong,Park, Peom 대한인간공학회 2002 大韓人間工學會誌 Vol.21 No.3
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.
운전자의 Instrument Panel에 대한 인지지도 측정에 관한 연구
유승동,박범,Yu, Seung-Dong,Park, Beom 대한인간공학회 1999 大韓人間工學會誌 Vol.18 No.2
Driver centered vehicle design is the important factor for driver's safety, product quality, and so on. Therefore, people has recently recognized the importance of driver centered vehicle design. Especially, in the focus of driver-vehicle interaction system, it is very important factor to ergonomic design of vehicle cockpit. In this study, Sketch Map method was used to measure of driver's cognitive map on IP(Instrument Panel) that is the basic factor to ergonomic design for vehicle cockpit. The compatibility of Sketch Map method was validated for the measurement of driver's cognitive map and then the accuracy between two groups was analyzed using Sketch Map method. Subjects were divided in two groups, the first group of subjects has their own vehicles and driver license, and the second group of subjects doesn't have own vehicle but has driver license. The result showed that for the case of the first group, the shape of IP in the cognitive map was influenced by IP of their each vehicle. However, for the case of the second group, it showed the difference between IP in the cognitive map and IP of experienced vehicle many times because they have been driving various type of vehicle. So, the shape of IP in the cognitive map was influenced by various type of IP.
운전석의 주관적 표준화에 따른 운전자의 운전 이차과제 수행시간과 정신적 부하와의 관계에 대한 연구
유승동(Seung-Dong Yu),박범(Peom Park) 한국인지과학회 1998 인지과학 Vol.9 No.4
운전상황하에서 운전자의 Performance는 운전 일차과제 수행에 관한 Performance와 이차과제 수행에 관한 Performance로 구분되어질 수 있다. 이들 중 일차과제 수행에 관한 연구는 많이 이루어지고 있는 반면 이차과제 수행에 관한 연구는 미약한 상태라고 할 수 있다. 하지만 운전 활동중의 운전자의 과오는 이차과제 수행의 부적합성에 의해 많이 발생하며, 이는 이차과제 수행에 대한 인간공학적 고려가 미약한 데에서 기인하고 있다고 할 수 있다. 이에 본 연구에서는 운전자의 인지지도내에 각인 되어 있는 운전석에 대한 표준화와 운전자의 이차과제 수행시간, 그리고 운전시의 정신적 부하간의 관계를 규명해보기 위해 실제 운전 상황하에서 실험을 수행하였다. 운전 이차과제 수행에 걸리는 시간은 Fitts’ Law를 사용하여 분석해 보았으며, 이차과제 수행에 대한 정신적 부하는 RNASA-TLX를 사용하여 측정해 보았다. 이를 기반으로 이차과제 수행도와 정신적 부하와의 관계에 대하여 분석을 수행하였다. 연구결과 운전자의 주관적 표준화에 근접한 운전석에 대하여 Fitts’ Law의 설명력이 높게 분석되었으며, RNASA-TLX에 의한 정신적 부하의 측면에서도 이와 유사한 결과가 도출되었다. In driving situation. driver’s performance is composed of that of primary task and secondary task. The study of primary task was implemented by many researchers but the study of secondary task was not implemented sufficiently. However, the driver’s error is influenced by secondary task and it is caused by the weakness of consideration of human factors. Consequently, in this study, the experiment was implemented to manifest the relationship between the time to implement of driving secondary task and mental workload to standardness of cockpit. The time to perform the secondary task was analyzed with Fitts’ Law, and mental workload was analyzed with RNASA-TLX(Revision of NASA-Task Load Index). Furthermore, the relationship between the time to perform the secondary task and the driver’s mental workload was studied. In case of the vehicle cockpit similar to the driver’s standardness. the experimental results showed that the degree of explanation of Fitts’s Law was higher than the other case. and the result of mental workload by RNASA-TLX was similar to the result of Fitts’s Law.
유승동 ( Yu Seung Dong ),박범 ( Park Beom ),민병도 ( Min Byeong Do ) 대한설비관리학회 2003 대한설비관리학회지 Vol.8 No.3
N/A The design of driver-vehicle interface has to base on the driver`s compatibility for the high operation performance. The BPM (Blind-Pointing Method) model was developed to extract driver`s mental model in the form of cognitive map for the design of compatible in-vehicle interface. However, in this model, established analysis method could not extract the driver`s detailed cognitive map. So, in this research, objective and detailed analysis method was suggested to complement of the incompleteness of existing analysis method in the BPM (Blind-Pointing Method) model. The K-means clustering analysis was used for the new analysis method, and more detailed cognitive map was extracted by suggested analysis method.
운전자의 인체치수변화에 따른 지게차 페달 위치에 관한 연구
손제성 ( Je Sung Son ),유승동 ( Seung Dong Yu ),박범 ( Peom Park ) 한국감성과학회 2003 추계학술대회 Vol.2003 No.-
This paper is a study on the pedal placement and driving position of forklift according to the various body dimensions. Comfortable driving position were measured angles of joint(ankle, knee, hip) by Goniometer. From SIP(seat index point) to basis of pedals were measured about X and Y axises. In addition, Z axises were gauged between floor and pedals. In this paper, The 27 male subjects with no experience in driving forklift were measured in the test in order to exclusion of learning effect. Therefore the subjects have a preference for pedal location to the body dimensions, if as long as their body dimensions was very long, they would required each pedal``s location of Y axis to increase. However, driving position is no influence. The pedal location of X and Z axises weren``t related with various body dimensions and subjects have symmetrical location to the pedals of inching and break and hight of brake pedal is lower than the others. They hope that brake pedal is lower than others.
한대희(Dae Hee Han),유승동(Seung Dong Yu),이강원(Gang Won Lee),민병도(Byeong Do Min),오재건(Jae Geon Oh),이성만(Sung Man Lee),나완용(Wan Yong Na) 한국자동차공학회 2004 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
The standard time(ST) is very important part of management efficiency and cost in automobile repair industry. There are many methods of work measurement of automobile repair time in korea. So we have studied differences of work measurements. The main goal of this study is to make people in automobile repair industry understand work measurement.
자동변속기차량과 수동변속기 차량의 페달에 따른 운전자세 비교 및 감성차이 분석
전용욱 ( Yong Wook Jeon ),유승동 ( Seung Dong Yu ),박범 ( Peom Park ) 한국감성과학회 2000 춘계학술대회 Vol.2000 No.-
국내 동적 환경에 대한 감성 연구는 아직 미흡한 상태다. 본 연구는 자동차의 운전자세에 관해 연구하였다. 왼발을 사용하지 않는 A/T(Automatic Transmission) 차량과 두 발을 모두 사용하는 M/T(Manual Transmission) 차량의 운전자세 차이를 Position tracking sensor를 통해 측정하였으며, 각 차량에 따른 운전자들의 감성을 비교 및 분석하였다. 본 연구에 참여한 피험자들은 운전면허 소지자로 운전 경험이 있는 남자 대학생 및 대학원생이 참여하였으며, 운전자세를 분석해 본 결과 A/T 차량이 M/T 차량의 경우보다 Seat가 더 뒤로 위치하였고, 두 차량의 운전자세에서 무릎관절의 각도에 많은 차이가 났다. 또, 신체 각 부위 관절의 위치나 모양도 조금씩 다르게 측정되었다. A/T 차량과 M/T 차량의 운전자세에 따른 감성 평가는 동적 환경의 감성 연구에 도움이 될 것이다.