• 대한소아치과학회지
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• 제48권1호
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• pp.95-104
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• 2021

이번 연구의 목표는 virtual reality 주의분산이 국소마취 시 소아의 통증과 두려움에 미치는 영향을 평가하는 것이다. 주의분산을 사용하지 않은 대조군, 천장 모니터를 이용해 TV를 시청한 군, virtual reality 기기를 이용한 군으로 나누어 국소마취를 시행하였다. 환자의 통증과 두려움을 평가하기 위해 국소마취 전과 국소마취 시점에 심박수와 산소포화도가 각각 측정되었으며 국소마취 후에 Wong-Baker Faces Pain Rating Scale이 기록되었다. 대조군과 TV를 시청한 군에 비해 virtual reality를 이용한 군은 심박수 변화량과 Wong-Bakers Faces Pain Rating Scale이 유의하게 낮았다(p < 0.05). 연령군별 비교에서는 5 - 7세 어린이에서, Frankl 행동평가척도별 비교에서는 3등급의 어린이에서 virtual reality를 사용한 군과 대조군 사이에 가장 큰 심박수 변화량과 Wong-Bakers Faces Pain Rating Scale의 차이를 나타냈다. 소아 환자의 국소마취 시 virtual reality 장치가 통증과 두려움의 완화에 효과적임을 확인하였으며 효과적인 주의분산 매체로 사용될 수 있을 것으로 사료된다.

• 디지털융복합연구
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• 제19권7호
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• pp.11-19
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• 2021

이 연구의 목적은 영어교육에서 가상현실 활용 교육이 효과적으로 이루어지기 위한 방안을 도출하기 위한 것이다. 이를 위하여 영어교육 현장 교사를 대상으로 가상현실을 활용한 영어교육에 대한 인식을 종합적으로 조사·분석하였다. 연구결과, 첫째, 현직교사들은 가상현실 활용 영어교육의 필요성에 대해 긍정적으로 인식하고 있으나, 대부분의 교사가 가상현실 활용 교육에 대해 심리적 부담감을 호소하는 것으로 나타났다. 둘째, 가상현실 기반 영어콘텐츠가 교육현장에 실용적일 것이라는 기대에 대해서는 긍정적인 반응보다 부정적인 반응이 다소 높은 것으로 나타났다. 셋째, 가상현실 활용한 영어교육이 효과성을 높이기 위해서는 가상현실의 교육적 활용에 대한 경험공유, 다양한 가상현실 콘텐츠 제공이 필요하다고 하였다. 넷째, 가상현실 교육적 활용을 위해서는 가상현실을 적용한 교수학습 방법교육 및 연수와 가상현실 활용 교육에 대한 가이드라인 제공에 대한 요구도가 높은 것으로 나타났다.

• 정보교육학회논문지
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• 제25권3호
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• pp.527-535
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• 2021

본 연구는 군(軍)에서 적용하고 있는 병영상담교육의 현실태를 살펴보고 가상현실을 활용한 병영상담 실습교육의 효과를 연구하였다. 먼저 상담에 관련한 가상현실 적용사례를 탐색하고 육군 병영상담교육에 벤치마킹(Benchmarking)할 수 있는 가상현실 기술을 검토하여 적용이 가능한 기술에 대해 고찰하였으며 교육생을 대상으로 교육방법과 교육과정을 분류하여 현 교육의 만족도 측정을 통해 통계적 분석방법인 분산분석을 사용하여 차이를 검정하였다. 또한 가상현실 콘텐츠를 교육생에게 실제 경험하게 한 후 가상현실 기술이 적용된 실습교육효과를 도출하고 현재 실습교육과 차이를 T 검정으로 비교 분석하였다. 이어 전반적인 상황을 고려할 수 있는 전문가 집단을 대상으로 계층적 분석기법을 활용하여 가상현실을 활용한 실습교육의 효과에 대해 분석하여 연구의 신뢰성을 높였다. 분석결과를 바탕으로 가상현실 기술이 접목된 병영상담실습교육의 발전방안과 현(現) 병영상담교육의 보완사항을 정책적 시사점으로 제시하였다.

• 여성건강간호학회지
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• 제28권3호
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• pp.174-186
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• 2022

Purpose: This study aimed to investigate the effects of virtual reality used in maternal-child nursing clinical practicums on nursing students' competencies through a systematic review. Methods: The inclusion criteria were peer-reviewed papers in English or Korean presenting analytic studies of maternal-child nursing practicums using virtual reality. An electronic literature search of the Cochrane Library, CINAHL, EMBASE, ERIC, PubMed, and Research Information Sharing System databases was performed using combinations of the keywords "nursing student," "virtual reality," "augmented reality," "mixed reality," and "virtual simulation" from February 4 to 15, 2022. Quality appraisal was performed using the RoB 2 and ROBINS-I tools for randomized controlled trials (RCTs) and non-RCTs, respectively. Results: Of the seven articles identified, the RCT study (n=1) was deemed to have a high risk of bias, with some items indeterminable due to a lack of reported details. Most of the non-RCT studies (n=6) had a moderate or serious risk of bias related to selection and measurement issues. Clinical education using virtual reality had positive effects on knowledge, skills, satisfaction, self-efficacy, and needs improvement; however, it did not affect critical thinking or self-directed learning. Conclusion: This study demonstrated that using virtual reality for maternal-child nursing clinical practicums had educational effects on a variety of students' competencies. Considering the challenges of providing direct care in clinical practicums, virtual reality can be a viable tool that supplements maternal-child nursing experience. Greater rigor and fuller reporting of study details are required for future research.

• International Journal of Knowledge Content Development & Technology
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• 제12권1호
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• pp.85-104
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• 2022

In this study, in line with the era of the fourth industrial revolution, general concepts, technologies, trends, and examples of virtual reality and augmented reality were examined, and based on this, a plan that could be applied to libraries in the future was proposed. As a result of the study, first, it is necessary to construct a smart space as an experiential play space that can satisfy cultural desires transcending time and space by providing immersive contents using 4th technology such as VR and AR. Second, it is necessary to expand experiential cultural support services through VR, AR and MR. Third, to develop educational contents based on augmented reality technology. In order to apply and activate virtual reality and augmented reality in libraries in the future, based on a survey of librarians and users of public libraries, a survey on the application status, satisfaction, and demand of current public libraries should be conducted.

• 대한통합의학회지
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• 제10권3호
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• pp.233-246
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• 2022

Purpose : The study aims to determine the effects of virtual and non-virtual realities in a normal person's mirror walk on gait characteristics. Methods : Twenty male adults (Age: 27.8 ± 5.8 years) participated in the study. Reflection markers were attached to the subjects for motion analysis, and they walked in virtual reality environments with mirrors by wearing goggles that showed them the virtual environments. After walking in virtual environments, the subjects walked in non-virtual environments with mirrors a certain distance away after taking a 5 min break. To prevent the order effect caused by the experiential difference of gait order, the subjects were randomly classified into groups of 10 and the order was differentiated. During each walk, an infrared camera was used to detect motion and the marker positions were saved in real time. Results : Comparison between the virtual and non-virtual reality mirror walks showed that the movable range of the leg joints (ankle, knee, and hip joints), body joints (sacroiliac and atlantoaxial joints), and arm joints (shoulder and wrist joints) significantly differed. Temporal characteristics showed that compared to non-virtual gaits, the virtual gaits were slower and the cycle time and double limb support time of virtual gaits were longer. Furthermore, spacial characteristics showed that compared to non-virtual gaits, virtual gaits had shorter steps and stride lengths and longer stride width and horizontally longer center of movement. Conclusion : The reduction in the joint movement in virtual reality compared to that in non-virtual reality is due to adverse effects on balance and efficiency during walking. Moreover, the spatiotemporal characteristics change based on the gait mechanisms for balance, exhibiting that virtual walks are more demanding than non-virtual walks. However, note that the subject group is a normal group with no abnormalities in gait and balance and it is unclear whether the decrease in performance is due to the environment or fear. Therefore, the effects of the subject group's improvement and fear on the results need to be analyzed in future studies.

• 디자인학연구
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• 제14권4호
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• pp.167-177
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• 2001

• International journal of advanced smart convergence
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• 제6권1호
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• pp.18-25
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• 2017

Recently, VR HMD (virtual reality head mounted display) has been utilized for virtual training, entertainment, vision therapy, and optometry. In particular, virtual reality contents are increasingly used for vision therapy and optometry. Accordingly, high-quality virtual reality contents such as a natural vision of life is required. Therefore, it is necessary to study the content production according to the optical characteristics of the VR HMD. The purpose of this paper is to suggest a proper FOV (field of view) of contents according to the distortion rate. We produced virtual reality contents and obtained distorted images by virtual camera. The distortion rate is calculated by using the distorted image. It is proved that the optimal FOV of the VR content with the minimum distortion is $90{\sim}100^{\circ}$. The results of this study are expected to be applied to the production of high quality contents.

• 대한안전경영과학회:학술대회논문집
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• 대한안전경영과학회 2004년도 춘계학술대회
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• pp.203-209
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• 2004

Virtual Reality(VR) is a new technology which makes humans communicate with computer. It allows the user to see, hear, feel and interact in a three-dimensional virtual world created graphically. In this paper, we introduced VR into psychotherapy area and developed VR system for the exposure therapy of acrophobia. Acrophobia is an abnormal fear of heights. Medications or cognitive-behavior methods have been mainly used as a treatment. Lately the virtual reality technology has been applied to that kind of anxiety disorders. A virtual environment provides patient with stimuli which arouses phobia, and exposing to that environment makes him having ability to over come the fear. In this study, the elevator stimulator that composed with a position sensor, head mount display, and audio system, is suggested. To illustrate the physiological difference between a person who has a feel of phobia and without phobia, heart rate was measured during experiment. And also measured a person's HR after the virtual reality training. In this study, we demonstrated the subjective effectiveness of virtual reality psychotherapy through the clinical experiment.

• Journal of Multimedia Information System
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• 제8권2호
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• pp.111-120
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• 2021

As recent virtual reality technologies provide a more natural three-dimensional interactive environment, users naturally learn to explore space and interact with synthetic objects. The virtual reality researcher develops a technique that realizes realistic sensory feedback to get appropriate feedback to sense input behavior. Although much recent virtual reality research works extensively consider the human factor, it is not easy to adapt to all new virtual environment contents. Among many human factors, distance perception has been treated as very important in virtual environment interaction accuracy. We study the experiential virtual environment with the feature of the virtual object connected with the real object. We divide the three-dimensional interaction, in which distance perception and behavior have a significant influence, into two types (whole-body movement and direct manipulation) and analyze the real and virtual visual distance perception heterogeneity phenomenon. Also, we propose a statistical correction method that can reduce a near-body movement and manipulation error when changing the interaction location and report the experiment results proving its effectiveness.