• 한국방송∙미디어공학회:학술대회논문집
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• 한국방송공학회 2009년도 IWAIT
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• pp.649-654
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• 2009

In this paper, we propose "InFra-VC", an interactive Fractal viewer on virtual reality system. Fractal impresses us very much and is expected to model some natural phenomenon effectively. Therefore, their visualization is necessary for us to study their beauty as well as structure. InFra-VC can represents a cutting plane of the fractal figure, so that the user can see and enjoy its internal structure. Moving position of the cutting surface, we can easily understand its internal structure. Additionally, InFra-VC can store situation as VRML format file at any time. This feature enables us to see the structure by a VRML viewer on common PC.

• 대한안전경영과학회지
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• 제1권1호
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• pp.207-216
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• 1999

Too many big accidents have been occurring in Korea during '90. Those were accidents of Sung-Soo Bridge in 1994 and Sam-Poong Department Store in 1995. It was confirmed that the causes of the accident were unreliable construction or building. Therefore, in this study are to use technique of virtual reality(VR) simulation in order to prevent construction accidents. To set up the VR in safety construction, Date Base of variables, VR model and expert system are needed. This system is to build expert system, to visualize of the VR system and navigation, and to find out design errors of construction. Therefore, the purpose of this was to analyze accident type of construction, and apply VR system for simulation technique.

• 대한안전경영과학회:학술대회논문집
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• 대한안전경영과학회 1999년도 추계학술대회
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• pp.291-301
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• 1999

Too many big accidents have been occurring in Korea during '90. Those were accidents of Sung-Soo Bridge in 1994 and Sam-Poong Department Store in 1995. It was confirmed that the causes of the accident were unreliable construction or building. Therefore, in this study are to use technique of virtual reality(VR) simulation in order to prevent construction accidents. To set up the VR in safety construction, Date Base of variables, VR model and expert system are needed. This system is to build expert system, to visualize of the VR system and navigation, and to find out design errors of construction. Therefore, the purpose of this was to analyze accident type of construction, and apply VR system for simulation technique.

• 복식
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• 제64권1호
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• pp.136-151
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• 2014

This study systematically analyzed types of fashion brand application focusing on accounts created in Korea. While referring to 'Chanel' which has developed a fashion brand app for the first time in August of 2008, not only for App store by Apple Inc. of the greatest market share but also for Android market, the one and only competitor of App store, the study examined cases of fashion brand app in Korea and foreign countries which have been in service till August of 2013 since the year of 2008. To achieve the research goal, the study conducted a literature research and a case review, categorizing the app by their distinctive functions which were Basic Information, SNS, AR, LBS, Entertainment, Mobile Shopping and Live Streaming. As for the first function, Basic Information, it was considered to provide information on a brand such as prices, sizes and colors of products which should be the most fundamental function of a fashion brand. The function would include look book, catalogues, photographs and others of products, helping users of the app with their understanding on images and concepts of the brand. Second, SNS function was considered useful for its mobility and communication and with the help of theirs, the users share fashion information with each other. Third, AR function as in a filed of virtual reality would edit virtual objects to look real in an actual environment. This would eventually offer the users a chance to try for clothes virtually. The fourth function, LBS, would work with GPS to find a store closest from a present location. This would be a help when the users try to find stores holding promotion events or trails while hiking in mountains. The fifth Entertainment function would include all sorts of games and chances for the users to listen to music and keep fashion diaries. The sixth function, Mobile Shopping, would help the users purchase items online via the app as they would not visit a store in person. The seventh function, Live Streaming, would give the users chances to actually see fashion collections in real time, held all over the world in every season. Because of this function, not only fashion experts but also regular people have become able to enjoy the fashion shows. The distinctive characteristics of the fashion brand application discussed in the study will be a useful reference when any relevant fields try to design other new fashion brand application.

• International Journal of Aeronautical and Space Sciences
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• 제4권1호
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• pp.34-44
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• 2003

An advanced aeroelastic analysis using a computational structural dynamics (CSD), finite element method (FEM) and computational fluid dynamics (CFD) is presented in this Paper. A general aeroelastic analysis system is originally developed and applied to realistic design problems in the transonic flow region, where strong shock wave interactions exist. The present computational approach is based on the modal-based coupled nonlinear analysis with the matched-point concept and adopts the high-speed parallel processing technique on the low-cost network based PC-clustered machines. It can give very accurate and useful engineering data on the structural dynamic design of advanced flight vehicles. For the nonlinear unsteady aerodynamics in high transonic flow region, Euler equations using the unstructured grid system have been applied to easily consider complex configurations. It is typically shown that the advanced numerical approach can give very realistic and practical results for design engineers and safe flight tests. One can find that the present study conducts a virtual flutter flight test which are usually very dangerous in reality.

• 한국의류학회지
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• 제43권5호
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• pp.682-698
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• 2019

This study examines whether experiential factors of virtual reality (VR) stores influence consumers' perceived amount of information and satisfaction, which in turn influences revisit intention. This also study examines whether the experiential factors differ as a function of an individual characteristic such as environmental responsiveness. Female consumers who had an experience in using VR technology for digital shopping participated in the online survey. The results showed that educational, escapist and aesthetic experiences have a significant impact on the perceived amount of information, and entertainment and escapist experiences have a significant impact on satisfaction. In addition, the perceived amount of information has a positive effect on customer satisfaction, which in turn has a positive effect on revisit intention. There is also a difference in the effect of experiential factors on consumer responses depending on the environmental responsiveness. This study provides theoretical suggestions for experiential marketing and presents practical implications for developing marketing strategies for digital retailers utilizing VR technology.

• 한국멀티미디어학회논문지
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• 제15권11호
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• pp.1399-1408
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• 2012

광원은 그래픽 모델의 색상과 밝기에 영향을 미치는 중요한 요소이며, 사실적인 합성 결과를 얻기 위해서는 실세계에 존재하는 모든 광원의 정보를 정교하게 저장하고 적절히 활용할 수 있어야 한다. 실세계 광원정보를 HDR 환경 맵으로 표현하여 높은 정확도로 저장하는 것이 가능하지만, 고정된 조명 환경에서 촬영된 한 장의 HDR 환경 맵만으로는 동적 가상 조명 위치에 대한 새로운 환경 맵을 생성하는 것은 불가능하다. 본 논문에서는 미리 정의된 위치와 방향에서 촬영된 대표 HDR 환경 맵들을 이용하여 임의로 선택된 위치에 대응하는 가상 광원의 정보를 동적으로 생성하는 기법에 대해 설명한다. 본 기법은 입력된 대표 HDR 영상들로부터 분석된 광원의 밝기와 분포 등의 정보를 기반으로 영상 보간을 통해 가상 조명에 대한 HDR 환경맵을 자동 계산한다. 보간 결과로 얻어진 정보를 영상기반 라이팅 기법에 활용함으로써 가상 광원의 효과가 그래픽 모델의 렌더링 결과에 사실적으로 반영될 수 있음을 보인다.

• The Journal of Korean Physical Therapy
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• 제31권2호
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• pp.67-75
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• 2019

Purpose: Patients with brain damage suffer from limitations in performing the activities of daily living (ADL) because of their motor function and visual perception impairment. The aim of this study was to help improve the motor function and visual perception ability of patients with brain damage by providing them with virtual reality-based contents. The usability results of the patients and specialists group were also evaluated. Methods: The ADL contents consisted of living room, kitchen, veranda, and convenience store, similar to a real home environment, and these were organized by a rehabilitation specialist (e.g., neurologist, physiotherapist, and occupational therapist). The contents consisted of tasks, such as turning on the living room lights, organizing the drawers, organizing the kitchen, watering the plants on the veranda, and buying products at convenience stores. To evaluate the usability of the virtual reality-based visual cognitive rehabilitation service, general elderly subjects (n=11), stroke patients (n=7), stroke patients with visual impairment (n=4), and rehabilitation specialists (n=11) were selected. The questionnaires were distributed to the subjects who were using the service, and the subjective satisfaction of individual users was obtained as data. The data were analyzed using SPSS 21.0 software. The general characteristics of the users and the evaluation scores of the experts were analyzed using descriptive statistics. Results: The usability test result of this study showed that the mean value of the questionnaire related to content understanding and difficulty was high, between 4-5 points. Conclusion: The virtual reality rehabilitation service of this study is an efficient service that can improve the function, interest, and motivation of stroke patients.

• 디지털융복합연구
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• 제20권4호
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• pp.617-625
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• 2022

본 연구는 기능에 따른 메타버스 플랫폼을 비교하고 분석하고자 하였다. 전문가 심층면접을 통해 5가지 메타버스 플랫폼을 선정하고 비교 분석하였다. 연구결과, 첫째 로블록스는 나만의 아바타를 커스터마이징하여 생성이 가능하며, 스튜디오 기능을 무료로 제공하며, 친구들과 프라이빗 게임을 즐길 수 있다. 둘째, 제페토는 셀카 한 장으로 아바타 생성이 가능하며, 크리에이티브 스튜디오 기능을 제공한다. 셋째, 포트나이트는 게임내 케릭터 생성이 가능하며, 게임에서 제공하는 아이템 구매 및 의복에 장치부착이 가능하고, 포크리 모드에서 친구들과 게임이 가능하다. 넷째, 게더타운은 가상공간의 유저들과 네트워킹이 가능하며, 나만의 아바타 커스터마이징 및 원하는 가상공간 템플릿이 제공된다. 끝으로, 페이스북 호라이즌은 직접 꾸민 자신만의 아바타로 가상세계 호라이즌에 참가하며, 월드 빌더라는 기능이 가능하고, 가상현실 속 광고판을 세우거나 가상의 매장이 가능하다. 본 연구는 메타버스 플랫폼의 특징을 통해 향후 산업에 적용할 수 있는 이론적 근거를 제공했다는 점에서 그 가치가 인정된다.

• 한국콘텐츠학회논문지
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• 제20권1호
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• pp.553-561
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• 2020

본 논문은 지적장애학생을 대상으로 몰입형 가상현실 기반 모의학습 프로그램이 편의점 이용에 필요한 의사 소통 능력과 학습태도에 미치는 효과를 파악하는데 목적이 있었다. 이를 위해, 지적장애 고등학생 23명을 연구 대상으로 선정하여, 실험집단에 11명과 통제집단에 12명을 배치하였다. 실험집단에는 HMD 기반의 몰입형 가상현실 기법을 활용한 편의점 모의학습 프로그램을 적용하였고, 통제집단에는 전통적인 중재 프로그램을 적용하였다. 프로그램은 해당 학교의 여름방학 동안 주 5회씩 4주간 실시되었으며, 1회 중재 시간은 40분이었다. 프로그램의 효과를 파악하기 위하여 사전-사후 평가를 실시하였고, 독립표본 t검증을 통해 분석하였다. 연구 결과, 실험집단이 통제집단 보다 의사소통 능력이 향상되었고, 학습태도 또한 더 긍정적으로 나타났다. 이는 지적장애학생의 언어 및 의사소통 교육에 있어 몰입형 가상현실을 활용한 모의학습이 유용한 교수-학습 방법으로 활용될 수 있음을 시사한다.