웹 기반 감성 선호도 평가 시스템 개발

최재호(Jaeho Choe),박성준(Sungjoon Park),정의승(Eui S. Jung) 한국HCI학회 2003 한국HCI학회 학술대회 Vol.2003 No.2

감성적 감각반응 분석을 통한 서비스 감성품질 제고 방법

최재호 ( Choe Jaeho ),박성준 ( Park Sungjoon ) 한국품질경영학회 2016 품질경영학회지 Vol.44 No.4

Purpose: The purpose of this study was to propose the useful method to improve service affective quality by analyzing customer`s service experiences and evaluating the satisfaction of the affective sensual responses to physical stimulus. Methods: While customers were experiencing the service, the customers evaluated the subjective satisfaction for the visual, auditory, tactile, olfactory and gustatory senses on a scale of -3 to 3 at each stage of the service process. The customers described the positive and negative feelings about each sensory stimulus, and explained the reason for the subjective evaluation scores. After experiencing the whole service, customers evaluated the affective quality of the whole service. Results: The proposed method was applied to coffee shops. 35 male and female college students were evaluated for 15 coffee shops in Korea. Multiple regression analysis revealed that auditory and olfactory senses had a greater impact on service affective satisfaction than other senses. Conclusion: This method is useful to identify the factors that affect customer`s affective quality and to find the target to improve physical environment more easily than existing methods.

스마트폰 음성 인터페이스의 사용 현황 및 사용자 인식에 대한 조사 연구

최재호(Jaeho Choe),김훈태(Hoontae Kim) 한국전자거래학회 2016 한국전자거래학회지 Vol.21 No.4

음성 사용자 인터페이스(VUI)는 인간에게 가장 친숙하고 편안한 인터페이스이다. VUI는 이미 스마트폰에 적용되어 있으며 최근에는 클라우드 및 AI 기술의 발전으로 VUI 적용 제품은 더욱 확대되고 있다. 그러나 가장 많이 보급되어 있는 스마트폰의 경우에도 VUI를 사용하는 사용자는 매우 적은 상황이다. 본 연구의 목적은 현재 스마트폰에서 사용되고 있는 VUI의 이용 현황 및 사용자 인식을 조사하고 문제점을 파악하여 향후 VUI 사용성 제고를 위한 연구방향을 제시하는 것이다. 163명의 대학생들을 대상으로 스마트폰 VUI의 사용 현황에 대한 설문 조사를 수행하였다. 조사 결과 VUI의 인지도는 높지만 사용률은 매우 낮았으며, 많은 사용자가 음성 인식 속도, 반응 속도 및 작동 방법에 대해 불편함을 느끼고 있는 것으로 나타났다. 대부분의 사용자가 호기심에서 VUI를 사용해봤지만 일부만이 계속 사용하고 있는것으로 조사되었으며, 많은 사용자들이 기계에게 말하는 것과 다른 사람들이 듣는 것에 거부감을 가지고 있었다. 본 연구의 결과는 VUI의 활용도를 제고하기 위한 향후 연구에 도움이 될 것으로 기대된다. Voice User Interface (VUI) is the most familiar and comfortable interface to human. Recently, with the development of cloud and AI technologies VUI has been applied to various products. The aim of this study was to identify the problems of the current VUI and to find the direction of future study by investigating the utilization status and user perception of the VUI of smartphones. A survey was conducted with 163 college students using Google Forms. The results showed that the level of recognition of VUI is high but the rate of usage is very low, and many users feel uncomfortable about the voice recognition rate, reaction speed and operation method. Most of the survey participants tried VUI out of curiosity, but only a small portion of them found it useful to continue to use it. Many participants disliked talking to machines and also did not want others to listen. The study results will guide future research efforts for improving the utilization of VUI.

발부위 3차원 인체측정방법에 관한 연구

최재호(Jaeho Choe),박성준(Sungjun Park) 대한인간공학회 2002 대한인간공학회 학술대회논문집 Vol.- No.-

본 연구의 목적은 2003 국민표준체위조사사업에서 3차원 발 형태 및 치수 자료를 효율적으로 수집할 수 있도록 하기 위한 사전 연구 내용이다. 3차원 발 측정 사업은 3차원 발 스캐너로 수집한 자료를 산업체의 제품 설계 기술자, 학계의 연구자, 유통 산업을 포함한 사용자에게 활용가능한 데이터로 가공하여 제공할 수 있어야 한다. 장비선정을 위하여 장비의 데이터 활용 기능성과 측정시의 기능성에 초점을 맞추어 성능을 검증하였으며, 조사 결과 일본의 INFOOT 장비가 최종 선정되었다. 측정 항목으로는 문헌 조사 및 산업체 수요 조사와 장비의 특성을 고려하여 총 39개의 측정 항목을 선정하였다. 3차원 측정 데이터를 정확하고 안정성있게 취득할 수 있도록 하기 위해서 측정 방법 및 장비의 운용, 데이터의 관리 등 전반적인 사업 추진에 대한 체계적인 계획과 실행 방안이 개발 중에 있다.

감성의 이해를 통한 감성품질의 구조적 접근 방법에 관한 연구

최재호(Jaeho Choe) 대한산업공학회 2013 대한산업공학회지 Vol.39 No.1

웹 기반 감성 선호도 평가 시스템 개발

최재호(Jaeho Choe),박성준(Sungjoon Park),정의승(Eui S. Jung) 한국정보과학회 2003 한국정보과학회 학술발표논문집 Vol.2003 No.2

자동차 내장 재질의 감성 품질요인 도출 및 물리적 특성치와의 연관성 분석

박성준,박재규,최재호,Park, Sungjoon,Park, Jaekyu,Choe, Jaeho 한국품질경영학회 2017 품질경영학회지 Vol.45 No.3

Purpose: The purpose of this study is to structure affective factors related to the tactile sense in order to improve tactile sensibility satisfaction of interior material. In this paper, we propose the design direction of interior material by analyzing the association between material properties and affective factors for automotive interior material. Methods: The relationship between sensibility adjectives and feelings related to tactile sensation were derived through factor analysis after touching prepared samples that were made by changing the material properties of automotive interior material. The association between affective factors and interior material properties were analyzed through ANOVA. Results: Seven kinds of visual and tactile affective factors were derived from the correlation between feeling of material and sensibility adjectives measured by 215 subjects. It is found that there is a quadratic relationship rather than a linear relationship through association analysis between affective factors and the material properties such as roughness, friction coefficient, and hardness. Conclusion: This study suggests the direction of the interior material design which can improve the sensibility satisfaction of the automobile customers by identifying the tactile factors related to the material properties of automotive interior material.

터치스크린 기반 웹브라우저 조작을 위한 손가락 제스처 개발

남종용(Jong Yong Nam),최재호(Jaeho Choe),정의승(Eui S. Jung) 대한인간공학회 2008 大韓人間工學會誌 Vol.27 No.4

Compared to the existing PC which uses a mouse and a keyboard, the touchscreen-based portable PC allows the user to use fingers, requiring new operation methods. However, current touchscreen-based web browser operations in many cases involve merely having fingers move simply like a mouse and click, or not corresponding well to the user's sensitivity and the structure of one's index finger, making itself difficult to be used during walking. Therefore, the goal of this study is to develop finger gestures which facilitate the interaction between the interface and the user, and make the operation easier. First, based on the frequency of usage in the web browser and preference, top eight functions were extracted. Then, the users' structural knowledge was visualized through sketch maps, and the finger gestures which were applicable in touchscreens were derived through the Meaning in Mediated Action method. For the front/back page, and up/down scroll functions, directional gestures were derived, and for the window closure, refresh, home and print functions, letter-type and icon-type gestures were drawn. A validation experiment was performed to compare the performance between existing operation methods and the proposed one in terms of execution time, error rate, and preference, and as a result, directional gestures and letter-type gestures showed better performance than the existing methods. These results suggest that not only during the operation of touchscreen-based web browser in portable PC but also during the operation of telematics-related functions in automobile, PDA and so on, the new gestures can be used to make operation easier and faster.

고령자를 고려한 내비게이션의 인간공학적 설계에 관한 연구

김창균(Changkyoon Kim),최재호(Jaeho Choe),임영재(Youngjae Im),정의승(Eui S. Jung) 대한인간공학회 2010 大韓人間工學會誌 Vol.29 No.5

Today, the number of elderly drivers who use navigation is increasing with the growing number of elderly drivers. The purpose of this study is to provide guidelines on the interface of car navigation for elderly users. To extract significant factors which were distinguished between young and elderly users, both young and elderly users executed the driving test by installing two car navigation alternatives. The analysis was conducted through t-test. The results show that significantly different factors were the number and the meaning of the menu items in the initial screen, the location and the meaning of the menu icons in the map screen, the ease of search of the menu and the text size in the menu screen. Improvements for the factors of the initial screen and map screen were made with reference to ergonomic guidelines, and suggested through experiments comparing design alternatives for the menu screen. Design alternatives were made through a combination of investigative variables, and the analysis was conducted through ANOVA. The results show that Alternative 7 (the location of the tab was placed at the bottom, menu representation was done with the text font size of 18pt and the location of menu navigation icons was shown at the upper left) was preferred in terms of user's preference and the execution time. So if the suggested menu for elderly users are added to the existing design, both users will satisfy their desires. The guidelines suggested in this study will help the designer of car navigation take elderly users into consideration.

Screen Size를 고려한 최적 Menu Structure에 관한 연구

김성민(Seongmin Kim),최재호(Jaeho Choe),정의승(Eui S. Jung),최광수 (Kwangsoo Choi),전명훈(Myounghoon Jeon),박준호(Junho Park),안정희(Jeonghee Ahn) 한국HCI학회 2008 한국HCI학회 학술대회 Vol.2008 No.2

To perform the navigation functions more efficiently, the navigation menu structure should be provided easy to understand to the driver in the vehicle environment that is restricted by driving workload, According to these conditions, to design better navigation interface, it is important to study on the navigation menu structure that is depend on the screen size and the information width and depth. Therefore, in this study we provided the different menu structures of 7-inch touchscreen LCD and 4-inch touchscreen LCD to the driver respectively in the driving simulator. Then, we compared the preference of each menu structures with the different touchscreen LCD. 자동차 환경에서 운전자가 주행 Workload라는 Main Task의 제약조건 하에서 Navigation의 효율적인 수행을 위해서는 Navigation에서 제공하는 기능들에 대한 빠른 이해가 필요하며, 이에 부합하는 Navigation Interface 설계를 위해 Navigation의 Screen Size의 제약 조건 하의 Menu Structure의 Width와 Depth 기반의 정보량의 수준과 이에 따른 Menu Structure Type의 연구가 중요한 Issue로 여겨지고 있다, 따라서 본 연구에서는 운전 상황과 유사한 환경을 구축하여 Navigation의 7인치와 4인치의 터치 스크린 기반의 Interface 환경에서 운전자에게 각각 다른 Menu Structure를 제시하고, 수행도와 선호도를 비교하였다.