• 한국산학기술학회논문지
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• 제13권1호
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• pp.247-253
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• 2012

본 연구는 시각흐름 속도에 따른 가상현실 프로그램이 뇌졸중 환자의 보행에 미치는 영향을 알아보고자 시행하였다. 연구 대상자는 서울시 소재 M재활전문병원에 입원 중인 뇌졸중 환자 중 무작위로 31명을 선정하였고 대상자는 가상현실 프로그램에 몰입하여 보행분석기 위에서 보행을 실시하였으며 가상현실 프로그램의 4가지 조건은 정상 보행과 0.25배, 1배, 2배의 시각흐름 속도변환 가상현실 프로그램으로 구성되었다. 중재동안 보행분석은 GaitRite보행분석시스템을 이용하여 보행 속도, 분속수, 활보장, 보장, 단하지지지 시간, 양하지지지 시간을 측정하였다. 그 결과 0.25배의 느린 시각흐름 가상현실 프로그램에서 연구 대상자는 보행속도, 분속수, 환측 활보장, 건측 활보장, 환측 보장, 건측 활보장이 통계적으로 유의하게 감소하였고(p<.05), 환측 단하지지지시간, 건측 단하지지지시간, 환측 양하 지지지시간, 건측 양하지지지시간이 통계적으로 유의하게 증가하였다(p<.05). 또한 2배의 빠른 시각흐름 가상현실 프로그램에서 연구 대상자는 보행속도, 분속수, 환측 활보장, 건측 활보장, 환측 보장, 건측 활보장, 환측 단하지지지시간이 유의하게 증가하였고(p<.05), 건측 단하지지지시간, 환측 양하지지지시간, 건측 양하지지지시간이 유의하게 감소하였다(p<.05). 따라서 가상현실 보행 프로그램의 적용 속도에 따라서 뇌졸중 환자의 보행 능력이 유의하게 차이를 나타낸다는 것을 알았다. 그러므로 뇌졸중 환자의 운동 프로그램을 계획할 때 보행 훈련 프로그램을 증가시킬 수 있는 다양한 훈련 프로그램이 요구된다.

• 한국산학기술학회논문지
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• 제9권4호
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• pp.992-999
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• 2008

본 연구의 목적은 방송 프로그램 제작에 있어서 중요한 역할을 하고 있는 영상 자막의 특성과 영상 커뮤니케이션 기능적인 관점에서 나타나고 있는 현상을 살펴보고자 한다. 다양한 방송 프로그램에서 활용되고 있는 영상 자막의 기능은 단순하게 간략한 정보를 전달하는 기능적인 역할을 수행하였다. 그러나 최근 다양한 방송 프로그램에서 활용되고 있는 영상 자막의 기능과 효과는 새로운 형태로 발전되고 있는 추세이다. 그러므로 본 논문에서는 텔레비전 프로그램에서 활용되고 있는 영상 자막의 특성을 고찰하고, 장르별 프로그램에서 사용되고 있는 영상 자막의 사례를 통한 다양한 현상들을 살펴보았다.

• 한국공작기계학회논문집
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• 제14권5호
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• pp.55-61
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• 2005

In this paper, we propose the visual simulation system for virtual reality motion rider system. The visual simulation system can apply verity virtual reality system. This paper deals with programs on 3D automatic creation of terrain, road design, and a realtime rendering program for the virtual reality system. For the 3D automatic creation of terrain, DEM data and rectangular grid method are applied. We can make two different road object with the road design program. One of them includes road definition, and the other is obtained by using 'NURBS curve.' Visual simulation is consisted by additional modeling and real-time rendering. We can apply the programs made in this way to visual system of driving simulator.

• 음성과학
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• 제12권4호
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• pp.215-226
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• 2005

This study is an attempt to investigate effect of pitch treatment program using visual feedback for profound deaf adults. Dr. Speech program was applied as a training tool. The subjects of this study were 3 profound deaf adults. Speech samples for evaluation were vowel prolongations and connected speech. Analysis was performed under the principle of single subject research design. As results of this study, all subjects showed the treatment effects which were represented by lowering fundamental frequency and speaking fundamental frequency.

• 국제물리치료학회지
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• 제5권2호
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• pp.730-737
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• 2014

The aim of this study is to examine the effects of virtual reality cognitive rehabilitation program on cognitive function, physical function and depression of long-term care insurance nongrading elderly dementia using Daytime protection service. For achieve this purpose, 30 dementia elderly were randomly assigned in to the experimental group(n=15)and control group(n=15). All subjects performed a general therapeutic exercise and 20- 30minutes takes virtual reality cognitive rehabilitation program were conducted with experimental group 2 times a week for 8 weeks. The intervention effects were measured by using cognitive function is mini-mental states examination-Korean version(MMSE-K), visual perception is MVPT(Motor-Free Visual Perception Test), Berg's balance scales(BBS), depression test GDS-K and lower limb strength. The results of study represented that the training group showed significant improvement in MMSEK( p<.05), visual perception(p<.05), balance(p<.05), lower limb strength(p<.05) and depression (p<.05). In conclusion, the virtual reality cognitive rehabilitation training using improves visual perception included cognitive function, physical function included balance, and lower limb strength and depression. These results suggest that virtual reality training using virtual reality cognitive rehabilitation program is feasible and suitable for mild dementia.

• 한국안광학회지
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• 제13권4호
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• pp.95-101
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• 2008

목적: 본 연구는 양안의 시지각 및 시기능 훈련의 도구로 활용이 가능한 양안 시지각 훈련 프로그램을 제안한다. 방법: 양안 시지각 훈련 시스템을 모듈별로 설계하였고, 입체시와 버전스 훈련이 가능한 입/출력 모듈을 구현하였다. 결과: 본 훈련 프로그램은 입력모듈의 경우, 주시시차의 계산을 통해 인지 거리를 추정할 수 있으며 오차는 5% 미만이었다. 출력모듈의 경우는 28명의 훈련자를 대상으로 입체감 및 깊이인지에 대한 평가를 수행하였고 완전한 입체감을 경험하는 것으로 나타났다. 결론: 따라서, 본 연구에서 제안하는 양안 시지각 훈련프로그램은 시기능 훈련의 도구로 활용이 가능할 것으로 판단된다.

• 조명전기설비학회논문지
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• 제21권7호
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• pp.94-102
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• 2007

최근 전력규모의 확대에 따라 안정된 전력의 공급을 위협하는 전력계통의 고장이 급속히 증가되고 있으며, 그중 단락전류의 계산에 대하여 지금까지는 대부분 수작업으로 계산을 하여왔다. 본 논문에서는 이러한 종전의 수작업에 의존하여 단락용량 계산서를 작성했던 방법을 Visual Basic을 접목시켜 프로그램화하여 사용함으로서 전기설비에 대한 차단 용량 값을 정확하게 산출하여 계통도 안정 및 부하설비에 대한 신뢰성을 확보할 수 있도록 하였다. 앞으로 이에 대한 연구는 전기설비관련 분야의 설계 및 시공분야에서 폭넓게 사용하게 될 것이다.

• 한국전문물리치료학회지
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• 제11권1호
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• pp.69-74
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• 2004

Hemiplegic patients usually present with difficulty maintaining balance. Balance retraining is the major component of rehabilitation program for patients with neurological impairment. The purpose of this study was to investigate the effects of prorpioceptive exercise program on the improvement of balance in the patients with chronic hemiplegia. Thirty subjects (mean age $57.0{\pm}9.8$) were recruited and the subjects were divided into a proprioceptive group and a visual group. The subjects for the proprioceptive group were participated in the proprioceptive exercise program for 4 weeks, and the visual group were treated visual feedback training using Balance Master. At 4 week follow-up test, Berg Balance Scale significantly improved 1.1 points (p<.01), Timed Up & Go test improved 4.2 second (p<.01), and weight distribution during sit to stand also improved 5.0% (p<.01). As a result of this study, the proprioceptive control approach improved dynamic balance in the patients with chronic hemiplegia. It is suggested that there was no benefit of visual feedback training like as Balance Master when administrated in combination with other physical therapy interventions, compared with physical therapy alone using proprioceptive control approach to hemiplegia.

• International Journal of Contents
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• 제17권2호
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• pp.20-31
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• 2021

This study aimed to pilot test a newly developed bilateral upper limb rehabilitation training program for improving the upper limb function of individuals with chronic stroke using a visual feedback method. The double-group pretest-posttest design pilot study included 10 individuals with chronic stroke (age >50 years). The intervention (four weekly meetings) consisted of five upper limb training protocols (wrist extension; forearm supination and pronation; elbow extension and shoulder flexion; weight-bearing shift; and shoulder, elbow, and wrist complex movements). Upper limb movement function recovery was assessed with the FuglMeyer Assessment of the Upper Extremity, the Wolf Motor Function Test, the Trunk Control Test, the modified Ashworth Scale, and the visual analog scale at baseline, immediately after, and four weeks after the intervention. The Fatigue Severity Scale was also employed. The Fugl-Meyer Assessment of the Upper Extremity and Wolf Motor Function Test showed significant improvement in upper limb motor function. The Trunk Control Test results increased slightly, and the modified Ashworth Scale decreased slightly, without statistical significance. The visual analog scale scores showed a significant decrease and the Fatigue Severity Scale scores were moderate or low. The bilateral upper limb training program using the visual feedback method could result in slight upper limb function improvements in individuals with chronic stroke.

• International Journal of Advanced Culture Technology
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• 제9권2호
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• pp.18-31
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• 2021

The purpose of the present study was to present evidence for driving interventions for the elderly by conducting programs that can improve visual perception and cognitive function in a driving simulator for elderly drivers and analyse their effects. Three elderly subjects who were 65 years or older, did not have physical and cognitive impairments, and were able to drive themselves participated in the present study. A total of 12 intervention sessions, of which subjects participated in 10 sessions of nine different visual perception and cognitive function programs available in a driving simulator, were conducted and pre- and post-program assessments were conducted (two assessments in total). The assessments included the evaluation of visual perception, frontal lobe function, concentration, safe driving behaviour, and self-efficacy. The results showed positive effects of the driving simulator program on the visual perception, frontal lobe function, concentration, safe driving behaviour, and self-efficacy of all subjects. Changes in the simulator results showed remarkable improvement in the response evaluation, judgment evaluation, and predictive power evaluation, but showed difficulties in interference tasks and depth perception in common. The results showed positive effects of driving simulator training on the driving ability of the elderly, and consistent provision of such training is expected to improve the quality of life of the elderly by securing the safety of driving and actively supporting social participation.