• Journal of the Korea Academia-Industrial cooperation Society
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• v.2 no.1
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• pp.59-66
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• 2001

Networked Virtual Reality systems provide a consistent virtual world to the users, possibly ditributed across long distance, and have been widely applied in the military war game, network game. edutainment, architectural areas, and shopping mall etc. Large processing requirements. however. made these systems be mainly researched on the platforms of high-performence system graphics workstations. This study paper Presents several problems when networked virtual reality systems are implemented on commodity Internet : two problems related with 3D graphical Processing, and the other related with network bandwidth and transmission delay. We also suggest solutions to these problems and analyze their performance effect based on an architectural simulation application.

• 기계와재료
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• v.23 no.1
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• pp.52-59
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• 2011

우리나라의 고령화 속도는 세계에서 가장 빠르며 2000년 총인구에서 65세 이상 인구의 비중이 7.3%로 증가되고 있다. 우리나라는 고령친화제품에 대한 인식과 제품이 점차 늘고 있지만 아직까지는 초보단계에 불과하다. 그러나 노인의 건강 유지 및 여가생활을 위한 고령친화제품의 수요가 꾸준히 증가하는 추세이다. 최근 소프트웨어기술의 발전으로 인하여 3D 가상현실구현이 가능해짐에 따라 실내의 한정된 공간에서 운동을 즐기며 건강을 유지할 수 있는 용품 즉, 기존의 단순한 재활치료 접근방식에서 시공의 제약을 받지 않는 가상현실로 구현된 제품들이 출시되고 있다. 이를 이용하여 Type I muscle 강화를 위한 입체구동 Balance 기기를 상용화 한다면 고령층의 여가활동과 동시에 운동, 치료를 병행할 수 있을 것이다. 본 고에서는 Type I muscle 강화를 위한 Balance기기에 대해 알아보고 가상현실과의 접목을 위한 산업전반의 동향을 파악해본다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2015.10a
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• pp.715-716
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• 2015

최신 IT 기술 변화의 중심점에 있는 3D 가상현실이란, 어떤 특정한 환경이나 상황을 컴퓨터로 만들어서, 그것을 사용하는 사람이 마치 실제 주변 상황 환경과 상호작용을 하고 있는 것처럼 만들어 주는 인간-컴퓨터 사이의 인터페이스를 하는 컴퓨터 프로그래밍 기법이다. 이처럼 무한한 가능성을 가진 3D 가상현실을 이용한 여러 가지 프로젝트가 쏟아져 나오고 있다. 현재 의학에 관한 실습 지식을 배우는데 있어서 장비 및 상황이 여의치 않은 경우가 많다. 위와 같은 필요성을 기본으로 하여, 본 논문에서는 가상현실을 기반으로 만든 간단한 의학시술 과제를 통해 교육생들이 실습해보고 기본적인 실습 흐름 및 의학 지식을 습득할 수 있는 간호 교육 시뮬레이션을 개발하였다. 환자의 상태와 병명을 표기해주며 위 환자에게 투여할 수 있는 약에 대한 선택을 교육생에게 주어준다. 교육생은 환자에게 투여할 약을 선택하고 투약할 약의 양을 조절하며, 마지막으로 투약하는 방법에 대해서 선택지를 통해 선택한다. 가상현실을 통해 몰입감을 높일 수 있어 간호교육에 효율적이다.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.28 no.2
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• pp.437-447
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• 2018

Virtual Reality (VR) is becoming a new standard in the game industry. PokeMon GO is a representative example of VR technology. The day after the launch of PokeMon Go in the U.S, It has achieved the highest number of iOS App Store downloads. This is an example of the power of VR. VR comprises gyroscopes, acceleration, tactile sensors, and so on. This allow users could be immersed in the game. As new technologies emerge, new and different threats are created. So we need to research the security of VR technology and game system. In this paper, we conduct a threat analysis for information assurance of VR device (Oculus Rift) and game system (Quake). We systematically analyze the threats (STRIDE, attack library, and attack tree). We propose security measures through DREAD. In addition, we use Visual Code Grepper (VCG) tool to find out logic errors and vulnerable functions in source code, and propose a method to solve them.

• Journal of Science Education
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• v.43 no.3
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• pp.271-283
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• 2019

This study examines the effects of virtual reality learning materials on the learners' learning motivation. For this study, we developed a virtual reality learning material for geological learning that allows observation of the characteristics of rocks in Korean topography that is closely related to learning contents. A 15-hour class was conducted with 91 students using virtual reality learning materials developed for first-year science high school students in D city. ARCS learning motivation strategy was used. Pre-test was conducted before the start of the classes and post-test was conducted after the classes. Statistical processing was analyzed using R-3.5.1 version program. As a result, the utilization of virtual reality learning materials has significant effects on attention concentration, satisfaction, and confidence in the learner's motivation factors. Using virtual reality in geological classes, students' interest in learning activities improve their immersion and concentration, which helps them understand the learning contents better.

• The Journal of the Convergence on Culture Technology
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• v.7 no.1
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• pp.151-161
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• 2021

This study is a descriptive qualitative study to understand the virtual reality-based simulation experiences of nursing students. The study recruited 53 students who conducted virtual reality-based simulation while attending the course of Adult Nursing I and II in the third year of the department of nursing at a university. The data was analyzed using a content analysis method from a reflection journal created anonymously by students. The results emerged 5 categories and 12 subcategories. The categories were consisted of "realizing the necessity of nursing competence", "expanding nursing knowledge", "receiving safety psychologically", "thinking focused on problem" and "getting satisfaction". It suggests that virtual reality online program can have a positive effect on thoughts and expansion of knowledge in a safe educational environment. Therefore, it needs to develop various contents for the virtual reality education and training.

• The Journal of the Korea institute of electronic communication sciences
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• v.14 no.4
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• pp.737-742
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• 2019

This paper is a study on the production of mixedeality contents by realizing AR coloring technology, virtual environment, and VR devices by realizing the interaction in virtual environment. In this study, we designed and produced the content from a fairy tale called 'Cinderella' to produce and demonstrate real mixed reality contents. 'Cinderella' shows 3D modeling in the virtual space using the Oculus Rift, and the modeled shoes can be lifted using Leap-Motion. It is a virtual augmented interaction content for exhibition and experience that can move a specific range from the foot on the treadmill. In this paper, we try to share the experience of creating new mixed reality game contents, which is a mixture of augmented reality and virtual reality technology, and continuation of universal use of this field.

• 한국정보교육학회:학술대회논문집
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• 2021.08a
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• pp.205-212
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• 2021

The purpose of this study is to analyze elementary school students' interest in virtual reality(VR) technology, usability, and the possibility of learning media. In particular, it is intended to be used for content creation for artificial intelligence(AI) education in the future. The effectiveness of elementary education using virtual reality technology was confirmed through the analysis of overseas research, and the applicability to elementary school students in Korea was analyzed. To proceed with the analysis, various virtual reality contents were provided to 5th grader of elementary school, and then, interest, usability, usefulness, and possibility of use in class and learning were surveyed. As a result of the study, it was confirmed that students' interest in virtual reality contents was very high, and that it could be used sufficiently as a learning medium. It suggests that it can be used in artificial intelligence education and data science education, which have recently been emphasized in importance. In particular, virtual reality can be used to simulate abstract data and artificial intelligence.

• Journal of Digital Convergence
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• v.15 no.5
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• pp.353-361
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• 2017

As one of Virtual Reality devices, HMD(Head-Mounted Device) helps users to experience an extended actual environment by providing them with virtual environment flexibly through the device. HMD considers user experience as importance as well as technical factors. Therefore, this study intended to analyze how the factors such as information quality, enjoyment, self-efficacy can have influence on the adoption of VR device using the extended technology acceptance model. The results showed that information quality and enjoyment have significant influences on perceived ease of use and usefulness. Self-efficacy only affect perceived ease of use. In addition, perceived ease of use and usefulness have influences on intention to use.

• Proceedings of KOSOMES biannual meeting
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• 1999.03a
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• pp.7-17
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• 1999

This paper describes design techniques on the ship simulator system adopting virtual reality technology. Ship handling, generally, is done by the multi workers such as Captain, Officer, Pilot and Quartermaster. With this special fact, we proposed multi client-server network and hardware architecture which fit to the Virtual Reality Ship Simulator.