• 한국콘텐츠학회논문지
• /
• 제15권3호
• /
• pp.40-47
• /
• 2015

ICT(정보통신: Information and Communication Technologies)에서 주요 분야로 각광받고 있는 가상현실(VR: Virtual Reality)영역은 이미 엔터테인먼트, 디자인 및 시뮬레이션 교육 등 다양한 분야에서 활용되고 있다. 특히, 문화관광분야를 비롯하여 사회 전반적인 영역에 더욱 확산 되고 있는 추세이다. 따라서, 본 논문에서는 문화관광 분야에서 가상현실 콘텐츠의 시장 선점 가능성 및 경쟁력 확보를 위하여 개선된 VR 콘텐츠를 기획 및 제작하였다. HMD(Head Mounted Display)에서 발생하는 인지부조화로 인한 시뮬레이션 멀미(simulation sickness) 현상을 개선시키기 위해 아웃포커스, 렌즈더스트, 모션블러 효과, 흔들림 효과를 최소화 하였다. 또한, 제작된 콘텐츠는 사용자의 몰입도 향상을 위해 효과적인 UI 디자인을 고려하여 설계하였다.

• 인터넷정보학회논문지
• /
• 제21권2호
• /
• pp.139-148
• /
• 2020

현재 우리 군은 과학과 기술의 발달, 2000년대 들어 급격히 심해진 저 출산율, 병 복무기간 단축 등으로 병력위주에서 장비위주로 첨단화, 고속화, 복잡화 되어가고 있다. 즉, 한 번의 실수로 많은 인명피해가 발생할 수 있는 실정이다. 선진국과 민간 안전교육 체계 및 교육성과 등을 분석해보면 군 안전 및 자살사고를 예방하기 위해서는 체험교육이 중요하며, 체계적이고 효율적인 체험교육을 위해서는 안전체험훈련장 건립이 필요함을 알 수 있었다. 지금 입대하고 있는 장병들은 일명 인터넷세대로 태어나면서부터 인터넷을 접하면서 성장하여 가상·증강현실(VR / AR)을 자유롭게 활용하고 있으며, 지금의 과학 기술 수준은 국민안전체험관의 체험실 대부분을 가상·증강현실로 대체할 수 있을 정도의 수준까지 발전하였다. 따라서 군 안전체험훈련장은 설치공간, 건립비, 유지비, 사용자 특성, 교육효과 등을 고려하여 '응급처치'처럼 모형이 효과적인 체험실 몇 개를 제외한 많은 체험실을 가상·증강현실로 건립할 필요성이 있다. 가상·증강현실(VR / AR) 기술의 발전, 국민안전체험관 운용실태, 군 부대 특성, 설치비 및 유지비 등을 고려하여 체험훈련 소요를 도출하였다. 그리고, 국민안전체험관 대비 저비용으로 효과적인 훈련성과를 달성할 수 있는 안전체험훈련장 구축방안과 부대별 교육인원 및 주변 여건에 부합한 안전체험훈련장 규모와 체험실 구성에 대해 제시하였다. 향후 이를 기반으로 안전체험훈련장을 구축하여 체험교육을 한다면 군 안전 및 자살사고를 예방하는데 기여하게 될 것이다.

• 대한전기학회논문지:전력기술부문A
• /
• 제53권1호
• /
• pp.22-30
• /
• 2004

As an information-oriented society comes, many people use PC and depend on database that network server has. However, the online data can be missed when a blackout happens and also a power failure effects on standard of judgment on Power Quality. Thus, it is reason of a trend using interruption-free live-line work when a trouble happens to power system. However, the 83％ among the number of people who receive an electric shock experience when a laborer is doing interruption-free live-line works. In interruption-free method, the education and the training problem has been issued. However, we have a few instructors for that training. Furthermore, the trainees have short training period, just 4 weeks. In this paper, to develope the method that has no restriction of a time and place and reduce the wasteful materials, immersion type virtual reality(or environment) technology is used. The users of a 3D immersion type VR training system can interact with the system by doing same action in the real safe environment. Thus, it can be valuable to apply this training system to a dangerous work like as "Interruption-free live-line work exchanging COS(Cut-Out-Switch)". In this program, the user works with a instruction on the window and speaker and can't work other tasks until each part of the task completed. The workers using this system can use their hands and viewpoint movement as he is in a real environment but the trainee can't use all parts and senses of a real body with the current VR technology. Despite of this weak point, when we consider the trends of improvement in electrical devices and communication technology, we can say that 3D graphic VR application has a high potentiality.

• 대한통합의학회지
• /
• 제8권2호
• /
• pp.211-220
• /
• 2020

Purpose : The purpose of the present study is to examine the effects of VR training with FES on improving the muscle strength, AROM, and function of the upper limb joints in patients with chronic stroke. Methods : The present study makes use of a pre-post control group design. Thirty patients with chronic stroke were randomly assigned to two groups according to treatment method - the VRFES group and the control group. The VRFES group received 15 minutes of VR training and 15 minutes of FES treatment. The control group received 15 minutes of conservative physical therapy and 15 minutes of VR training. All subjects received 30 minutes of treatment, three times a week, for eight weeks, which amounted to 24 sessions of training. The muscle strength, AROM, and function of the upper extremities were measured before the training and eight weeks after. Upper limb muscle strength was tested using the Digital Manual Muscle Tester while AROM was measured using the Digital Dual Inclinometer. The clinical assessment tools for upper extremity function included the use of the Manual Function Test and the Jebsen-Taylor Hand Function Test. Results : Both groups exhibited great improvements in muscle strength and upper extremity function during the intervention period. The VRFES group exhibited a significant difference in muscle strength, AROM, and function of the upper extremities in comparison with the control group(p<.05). Our results reveal that VRFES is more effective for the muscle strength, AROM, and function of the upper extremities in patients with chronic stroke. Conclusion : VRFES treatment will be used as an important intervention for improving the muscle strength, AROM, and function of the upper extremities in patients with chronic stroke and achieving the functional recovery of the upper extremities.

• 대한의용생체공학회:의공학회지
• /
• 제23권2호
• /
• pp.155-163
• /
• 2002

Attention Deficit Hyperactivity Disorder(ADHD) is a childhood syndrome characterized by short attention span. impulsiveness, and hyperactivity, which often leadㄴ to learning disabilities and various behavioral problems. For the treatment of ADHD, medication and cognitive-behavior therapy is applied in recent yearn Although psycho-stimulant medication has been widely used for many rears. current findings suggest that, as the sole treatment for ADHD, it is an inadequate form of intervention in that parents don't want their child to use drug and the effects are limited to the period in which the drugs are physiologically active. On the other hand, EEG biofeedback treatment studies for ADHD have reported promising results not only in significant reductions in hyperactive, inattentive, and disruptive behaviors, but also improvements in academic performance and IQ scores. However it is too boring for children to finish the whole treatment. The recent increase in computer usage in medicine and rehabilitation has changed the way health care is delivered. Virtual Reality technology provides specific stimuli that can be used in removing distractions and providing environments that get the subjects'attention and increasing their ability to concentrate. VR technology can hold a patient's attention for a longer period of time than other methods can, because VR is immersive, interactive and imaginal. Based on these aspects, we developed Attention Enhancement System (AES) using VR technology, EEG biofeedback, and cognitive training method for enhancing attention and made a clinical trial to people who have attention difficulty and behavioral problems.

• 국제학술발표논문집
• /
• The 9th International Conference on Construction Engineering and Project Management
• /
• pp.1187-1193
• /
• 2022

A construction site is a highly complex and constantly changing environment, where hazardous areas are difficult to detect if workers lack sufficient knowledge and awareness. Thus, frequent worker safety training is required. Numerous studies on using virtual reality (VR) for safety training were published. While they demonstrate the potential for improving the skills necessary to avoid accidents in the construction industry, they remain difficult to apply at actual construction sites. VR requires specialized hardware and software, limiting workers' access and restricting workers' participation in training sessions. As a result, this paper proposes multiple platforms for immersive virtual reality safety training (VRMP) based on Industry Foundation Classes (IFC) and web technologies such as immersive web (WebXR). The VRMP is compatible with mobile and desktop devices currently by workers and demonstrates scenario models familiar to workers. Also, it reduces development time by utilizing Building Information Models (BIM). Additionally, The VRMP collects data from workers in a virtual environment to assess each worker's safety level, assisting workers in effectively and comfortably gaining a better understanding and raising their awareness. This paper develops a case study based on the VRPM in order to assess its effectiveness.

• 한국정보통신학회:학술대회논문집
• /
• 한국정보통신학회 2022년도 춘계학술대회
• /
• pp.566-568
• /
• 2022

최근 4차 산업과 코로나19의 비대면 사회로 인해 가장 떠오르는 기술로 메타버스가 있다. 메타버스의 핵심적인 기술 중 하나로 VR·AR 기술은 의료, 교육, 서비스 등 다양한 산업화가 이루어지고 있다. 그중 주요 활용 분야로는 교육·훈련이 가장 높으며 원전 작업에서 또한 이 기술이 필요로 한다. 본 논문에서는 기존 산업에서의 VR·AR 기술의 활용 분야를 살펴보고 원전 작업에 대한 활용 방안을 제시하고자 한다.

• 한국화재소방학회논문지
• /
• 제33권6호
• /
• pp.159-164
• /
• 2019

본 연구는 최근 빈번하게 발생하고 있는 공동주택 화재로 인한 인명피해 최소화를 위해 최신 IT 기법을 활용하여 공동주택(아파트)의 화재 상황을 재현 한 가상현실(VR) 화재 프로그램을 개발하고 학습도구로서의 활용가능성을 검증하였다. 이를 위해 공동주택 단위평면 크기, 가족구성 등 기본환경을 설정하였으며 공동주택에서 일어날 수 있는 화재 시나리오를 개발하여 게임형식으로 가상현실 프로그램을 구현하였다. 아울러 개발된 가상현실(VR) 화재 프로그램에 대한 호응도를 살펴보기 위해 설문조사를 실시하였다. 설문결과 가상현실(VR) 화재 프로그램에 대한 호응도가 매우 높게 나타났으며 특히 가상현실 화재 프로그램을 통한 학습효과가 높아 학습기기로서의 유효성을 확인할 수 있었다.

• 한국항해항만학회:학술대회논문집
• /
• 한국항해항만학회 2016년도 춘계학술대회
• /
• pp.181-185
• /
• 2016

본 논문은 선원 훈련을 보다 효율적으로 수행하기 위한 가상현실 기반 선원 훈련 플랫폼을 위한 저작도구를 제안한다. 제안하는 저작도구는 훈련의 효율도를 높이기 위해 실 선박 환경을 3D 스캔하여 가상현실 환경으로 불러오는 가상환경 구축부와 다양한 시나리오 기반의 훈련 내용을 소화할 수 있는 드래그-앤-드롭 기반의 스크립트 편집부를 지원한다. 본 저작 도구에서는 가상현실 장비들을 지원하고 실환경을 3D 스캔을 통해 가상 현실로 변환하기 때문에 피훈련자는 훈련이 필요한 실환경 내에서 요구되는 동일한 훈련을 이행하게 됨으로써 피훈련자의 몰입감과 훈련 효과를 높인다. 또한 다양한 선박 환경에 대한 훈련 시뮬레이션을 빠른 시간 내에 제작할 수 있게 함으로써 제작에 필요한 비용을 줄인다. 본 저작도구는 시나리오 편집부를 통해 다중 참여형 훈련 시나리오의 편집과 임무 평가를 가능하게 한다.

• 대한물리치료과학회지
• /
• 제30권1호
• /
• pp.62-71
• /
• 2023

Background: This study was performed to evaluate the effects of Thermal stimulation combined virtual reality training (TV) on improvement of upper extremity AROM and function in patient with chronic stroke. Design: Two groups pre-post randomized controlled design. Methods: A single-blind, randomized controlled trial was conducted with 30 chronic stroke patients. They were randomly allocated two groups; the TV group (n=15) and Virtual Reality training group (VT) (n=15). The TV group received treatment for 30 min - 15 min of Thermal stimulation, and 15 min of VR training. The VT group received 15 min of VR training. Each group performed 30 minutes a day 3 times a week for 8 weeks. The primary outcome upper extremity AROM and function were measured by a active range of motion test, Manual Function Test (MFT) and Jebsen-Taylor hand function Test (JTT). The upper extremity active range of motion was evaluated using a digital dual inclinometer. MFT and JTT were used to evaluate the hand function. The measurement were performed before and after the 8 weeks intervention period. Results: Both groups demonstrated significant improvement of outcome in muscle strength and upper extremity function during intervention period. TV group revealed significant differences in AROM and upper extremity function as compared to the VT groups (p<.05). Our results showed that TV was more effective on upper extremity AROM and function in patients with chronic stroke. Conclusion: Both groups demonstrated significant improvement of outcome in muscle strength and upper extremity function during intervention period. TV group revealed significant differences in AROM and upper extremity function as compared to the VT groups (p<.05). Our results showed that TV was more effective on upper extremity AROM and function in patients with chronic stroke.