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자동화 수준에 따른 자율주행 자동차 수용 인식 차이에 대한 연구
정므엘,이슬찬,장형식,지용구 대한산업공학회 2019 대한산업공학회지 Vol.45 No.5
The objective of this study is to identify the factors affecting the drivers’ acceptance of an automated vehicle andto develop an acceptance model for partially and fully automated vehicles. To achieve this, we elicited factorsfrom previous literature and conducted a survey study. Then, a research model was developed consisting ofperceived usefulness, trust, safety, system aspects, infrastructure aspects and driver characteristic. The surveywas conducted with 594 participants (295 : partially automated vehicle, 299 : fully automated vehicle) and theresults were analyzed by the Analysis of Moment Structures (AMOS) software. The results showed that 24 outof 40 hypotheses (12 : partially automated vehicle, 12 : fully automated vehicle) were statistically supported. Weidentified that the factor affecting drivers’ acceptance is different according to the automation level. In conclusion,the importance of trust and safety revealed, and key factors in system aspect, infrastructure aspect and drivercharacteristic derived to promote drivers’ acceptance.
장기적 사용 측면에서 AI 스피커의 사용자 경험 평가 연구
정므엘(Meuel Jeong),고상민(Sang Min Ko) 한국HCI학회 2019 한국HCI학회 학술대회 Vol.2019 No.2
본 연구의 목적은 장기적인 관점에서 사용자의 경험을 회상하여 AI speaker 사용자의 의미 있고 중요한 이슈를 발굴하고, 평가하는 것이다. 본 연구는 장기적 측면에서 사용자 경험을 평가하는 UX Curve 와 사용자의 경험을 활성화 시키기 위한 기억인출 (Memory Retrieval)을 통해 AI speaker 에 대한 사용자 경험 평가를 수행하였다. 평가는 UX Curve 의 General, Attractiveness, Ease of use, Utility, Usage volume 의 5 가지 관점에서 진행하였다. 본 연구는 AI speaker 사용자 경험에 영향을 미치는 요인에 대한 연구인 동시에 발견된 이슈들을 통해 추후 정량적인 연구의 기반이 될 수 있다는 점에서 의의를 가진다.
범죄 예방 환경 설계를 위한 최적의 색채와 조명 수준의 탐색 연구
박진상(Jinsang Park),정므엘(Meuel Jeong),박채린(Chae Rin Park),김경도(Kyungdoh Kim) 대한인간공학회 2018 大韓人間工學會誌 Vol.37 No.2
Objective: This study explored the optimal level of color and light level for crime prevention environment design (CPTED) focusing on pedestrian emotions in night environment. Background: As a solution to reduce the crime that occupies the highest proportion of various social unrest factors, the crime prevention environment design (CPTED) technique is being used. Method: Color (21 levels) and light (3 levels) were selected as efficient design factors to reduce the fear of crime. Five pairs of emotional words related to "fear of crime" were derived. We provided the nighttime alley environment composed of various combinations of color and light using the simulator. The participants answered the questionnaire composed of 7 points of Likert scale. Results: There was a difference in fear of crime according to color in all emotional lexical pairs. Also, in all emotional lexical pairs except one pair, female showed higher fear of crime than male. Conclusion: This study suggested the optimal combination of color and light in alley environment. Color (19), (20), and (21) showed low fear of crime in all light levels. Color (17) showed low fear of crime in Light (Blue). And color (18) showed low fear of crime in Light (Blue) and Light (Orange). In particular, color (8), (11), and (16) did not show low fear of crime, but they showed low fear of crime when it matched light (Blue). Application: From the point of view of integrating color and light in crime prevention environment design, the combination of color and light proposed in this study is highly recommended.
간호사의 환자기록관리 업무에 대한 업무중단과 멀티태스킹 패턴 분석: 시선 추적 데이터를 중심으로
김다영(Da Yeong Kim),김수련(Su Ryeon Kim),정므엘(Meuel Jeong),지용구(Yong Gu Ji) 대한인간공학회 2020 大韓人間工學會誌 Vol.39 No.4
Objective: The purpose of this study is to derive the practical aspects and potential problems of the charting, and increase the efficiency of nursing work. Background: Since the duties of nurses have increased over the years, the frequency of their work interruptions has increased as well. Charting in daytime is a task that is frequently interrupted, and performing multitasking to handle the interruption may cause distraction and memory load, leading to various errors. Therefore, it is necessary to analyze the interruptions and multitasking patterns during charting. Method: This study utilizes the eye-tracker to analyze the charting patterns of nurses who perform multitasking when interrupted by multiple causes of interruption and negative interruptions. We analyzed 4.13 hours of charting data from three daytime nurses. Results: During charting, interruptions occurred 155 times in total, of which 37.42% were by multitasking. Both interruptions and multitasking were caused most frequently by nurses, and half of the interruptions were handled through multitasking. Interruptions and multitasking caused by telephone followed after, but the rate of negative interruptions was low as 15.39%; this pattern was found because telephone waiting time was also included. On the other hand, family members and physicians have not had many interruptions, but most of them have been performing multitasking even when not related with charting. Conclusion: If an interruption occurs during charting, it must be handled by monotasking, and in the case of negative interruptions involving irrelevant tasks, charting has a higher work priority. However, in some situations where tasks involving patients" safety are intervened, the intervened tasks should be given priority and multitasking can be allowed at some point for efficiency. Application: This study can be used as educational materials for prioritizing in nursing work and a basic research for improving nursing work process.