• 한국시뮬레이션학회논문지
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• 제14권3호
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• pp.55-66
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• 2005

Virtual reality (VR) simulators have been extended to transfer knowledge and education, and demands for exhibition systems for science education and cultural experiences has also increased. Existing VR simulators, which are based on the dynamics equations of motion, cannot easily be adapted to changes in simulation contents. In order to effectively transfer knowledge and maintain interests through educational applications, an experiential system that has multi-sensory effects as well as motion effects is required. In this study, we designed and implemented a motion generation that is tailored to experiential exhibition systems and multi-sensory VR effects. Both the sense of motion which is generated from the movement of the viewpoint of the visual image, and motion effects which are constructed in advance, are applied to motion simulation. Motion effects which occur during interaction between the user and the exhibition system can be easily added. Various sensory cues that are appropriate to the exhibition system are also considered.

• 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.

• Journal of International Society for Simulation Surgery
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• 제4권1호
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• pp.9-12
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• 2017

Purpose Surgery for separating craniopagus twins involves many critical issues owing to complex anatomical features. We demonstrate a 3D printed model and virtual reality (VR) technologies that could provide valuable benefits for surgical planning and simulation, which would improve the visualization and perception during craniopagus surgery. Material & Methods We printed a 3D model extracted from CT images of craniopagus patients using segmentation software developed in-house. Then, we imported the 3D model to create the VR environment using 3D simulation software (Unity, Unity Technologies, CA). We utilized the HTC Vive (HTC & Valve Corp) head-mount-display for the VR simulation. Results We obtained the 3D printed model of craniopagus patients and imported the model to a VR environment. Manipulating the model in VR was possible, and the 3D model in the VR environment enhanced the application of user-friendly 3D modeling in surgery for craniopagus twins. Conclusion The use of the 3D printed model and VR has helped understand complicated anatomical structures of craniopagus patients and has made communicating with other medical surgeons in the field much easier. Further, interacting with the 3D model is possible in VR, which enhances the understanding of the craniopagus surgery as well as the success rate of separation surgery while providing useful information on diagnosing and surgery planning.

• 한국시뮬레이션학회논문지
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• 제13권2호
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• pp.45-52
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• 2004

This paper presents a prototype visualization system of mixed reality for a VR flight simulator. The chroma key technique is used to build the mixed reality model for a VR flight simulator. The Daedeok science town can be visualized in real time according to the rider control. He can also see his own hand/foot operating the control stick/rudder as well as virtual environment projected to the blue-screen using a video-see-through HMD.

• 한국자동차공학회논문집
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• 제13권2호
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• pp.149-156
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• 2005

In this paper, the VR(Virtual Reality) simulation system is developed to analyze driver's perceptive response on the ASV(Advanced Safety Vehicle). The ASV is the vehicle of next generation equipped with various warning systems. For the purpose, the VR simulation system consists of VR database, vehicle dynamic model, graphic/sound system, and driving system. The VR database which generates 3D graphic and sound information is organized for the driving reality. Mathematical models of vehicle dynamic analysis are constructed to represent the dynamic behavior of a vehicle. The driving system and the graphic/sound system provide a driver with the operation of a vehicle and the feedback of a driving situation. Also, the real-time simulation algorithm synchronizes the vehicle dynamic model with the VR database. To check the validity of the developed system, a simple scenario is applied to investigate driver's perceptive response time and vehicle acceleration on an emergency situation. It is confirmed that the proposed system is useful and helpful to design the FVCWS(Forward Vehicle Collision Warning System).

• 한국콘텐츠학회논문지
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• 제19권2호
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• pp.661-670
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• 2019

본 연구는 가상현실 기술을 간호교육에 활용한 연구에 대해 알아보기 위해 시행된 체계적 문헌고찰이다. 연구대상 논문은 2018년도 11월 까지 출간된 논문으로 전자 데이터베이스인 PubMed, Proquest (nursing and allied health), CINAHL, RISS를 활용한 문헌검색이 이루어졌다. 검색어로는 'nursing education', 'simulation', 'skill training', 'virtual reality', 'VR'을 사용하였다. 총 695개의 논문이 검색되었고, 최종 7편의 문헌이 포함되었다. 7편 중 5편은 비동등성 대조군 실험설계 연구였으며 2편은 단일군 설계 연구였다. 이중 2편은 수기술 교육에 가상현실 기술을 활용하였으며 5편은 시나리오를 활용한 가상현실 시뮬레이션 교육이었다. 측정된 결과 변수는 수기술 능력, 지식, 총 VR 활용 학습시간, 자기효능감, 의사소통 능력이었고, 대체로 긍정적인 결과가 확인되었으나 일부 연구에서는 통계적으로 유의미하지 않은 결과도 있었다. 본 연구 결과는 가상현실을 활용한 간호교육의 효과에 대한 근거를 제시하였으나 향후 체계적인 측정과정이 포함된 중재 연구가 추가적으로 필요하다. 또한 기존의 수기술 교육프로그램과 시뮬레이션 교육과의 체계적인 비교연구를 통해 비용 등의 효과에 대한 근거제시가 이루어져야 할 것이다.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2023년도 가을학술발표대회논문집
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• pp.259-260
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• 2023

This study aims to build VR using BIM at our actual site, simulate it in a realistic background, and simulate new safety-related technologies being developed by our company rather than safety education contents to review optimal use plans for each field type so that the new technology can be effectively applied in the field.

• 대한방사선기술학회지:방사선기술과학
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• 제46권6호
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• pp.493-499
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• 2023

This study developed education contents of measuring spatial dose with virtual reality simulation and applied to students majoring radiological science. The virtual reality(VR) contents with measuring spatial dose rate in the radiation controlled area was developed based on the simulation from pilot study. In this simulation, the tube voltage and tube current can be set from 60 to 120 kVp in 10 kVp steps and 10 to 40 mAs in 10 mAs increments, and the distance from source can be set from 30 to 400 cm continuously. Iron and lead shields can be placed between the source and the detector, and shielding thickness can be set by 1 mm increments ranging from 1 to 20 mm. We surveyed to students for evaluating improvement of understanding spatial dose rate between before and after education by VR simulation. The survey was conducted with 5 questions(X-ray exposure factors, effects by distance from the source, effects from using shield, depending on material and thickness of shield, concept and measuring of spatial dose rate) and all answers showed significant improvement. Therefore, this VR simulation content will be well used in education for spatial dose rate and radiation safety environments.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2008년도 정기학술발표대회 논문집
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• pp.68-73
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• 2008

최근 정보화 기반의 공사관리기법은 기존의 수치적 정보관리에서 VR기반의 시각적 정보관리로 변화되고 있다. 본 연구에서는 토목공사의 기획단계, 설계단계, 시공단계에서 VR시스템을 기반으로 사용할 수 있는 기능에 대해 구현절차를 IDEF0모형으로 제시한다. 연구에서 IDEF0모형은 실제 가상건설시스템의 기능으로 토목공사의 각 단계에 적용시켜 실무활용성을 검증하는데 활용하고 있다. 제시된 기능모형에 근거하여 연구에서는 각 단계별로 VR기반 시뮬레이션 기능들을 개발하였다. 개발된 가상건설시스템은 3D객체기반으로 설계정보의 시각적인 효과를 증진시킴으로서 효율적인 설계안의 검토를 가능하게 할 수 있다.

• 국제학술발표논문집
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• The 9th International Conference on Construction Engineering and Project Management
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• pp.1209-1216
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• 2022

The majority of construction site incidents occur due to a lack of hazard awareness among workers on job sites. This lack of awareness is despite mandatory construction safety training, typically in the form of written content (safety manuals) or of images depicting hazards. To reduce job-site injuries and fatalities, general contractors have started adopting Virtual Reality (VR) to impart safety training to job site personnel. VR safety training can take the form of an immersive simulation comprising potential safety hazards intentionally embedded into a virtual job site; users are required to identify these hazards within a specified time frame with the expectation that they will be more adept at recognizing hazards on an actual job-site, resulting in fewer accidents. This research study seeks to identify the actual impacts of VR on construction safety awareness among participants. The research addresses the following question: Does VR improve hazard recognition awareness? The primary objective is to evaluate participants' performance of past construction safety awareness against present construction safety awareness after receiving VR training. Participants were asked to complete a multiple-choice Qualtrics™ questionnaire. The results of the study showed a statistically significant knowledge gain advantage with respect to hazard recognition and construction safety awareness with the use of interactive, immersive VR over a more conventional and passive safety training method.