• 대한중풍순환신경학회지
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• 제24권1호
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• pp.25-40
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• 2023

Background: Although not clarified, the overall prevalence of visual field loss after stroke was estimated at 52% of stroke survivors and for visual acuity loss, at 70% of them. Among visual field loss patients after stroke, homonymous hemianopia is the most common symptom. Visual defect degrades the quality of life by disrupting independent life and affecting the survival of the patients, but highly-evidenced treatment has not been found until now. ■Case report A 51-year-old female with left-side homonymous hemianopia and central vision loss by a right occipital-temporal hemorrhage was treated with Hyeolbuchukeo-tang, Ikgibohyeol-tang, acupuncture, electroacupuncture, and moxibustion. We used a confrontation visual field exam, automated perimetry and visual analog scale, and visual acuity test to observe changes in the patient's symptoms and evaluate the efficacy of the treatment. After 61 days of such interventions, the patient's subjective discomfort lessened, followed by positive changes in the scales of tests mentioned above. ■Conclusion This case suggests that combined Korean medicine treatment might be an effective tool for treating post-stroke homonymous hemianopia and central vision loss. More studies should be conducted to support the effectiveness of the treatment.

• International journal of advanced smart convergence
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• 제10권3호
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• pp.232-244
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• 2021

This study analyzed the changes in carbon monoxide, carbon dioxide, oxygen and visual distance by presence of sprinkler heads and their types in the event of a fire in an indoor gymnasium. Based on carbon monoxide and visual distance that affects human bodies enormously, first, if there is no sprinkler head, carbon monoxide will reach 0.4% within five seconds and visual distance rapidly shrank within five seconds. Seconds, in the event of standard sprinkler heads, carbon monoxide gradually increased from 30 seconds onwards and visual distance rapidly shrank after five seconds. Second, Third, if there are special sprinkler heads, carbon monoxide fluctuated after opening the head and visual distance became 5m or below from 15 seconds. Finally, in the event of early response sprinkler heads, carbon monoxide fluctuated up and down at 3 seconds due to falling water drops. Visual distance shrank up to 5m or below at 6 seconds. In the future, time for operation of each sprinkler head shall be analyzed.

• 인지과학
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• 제20권2호
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• pp.109-124
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• 2009

시각 정보와 청각 정보가 동시에 제시될 때, 두 정보가 모두 지각되기 보다는 시각 정보가 더 우세하게 지각되는 현상을 보게 된다. 이러한 현상을 시각 우세성 효과라고 한다. 이러한 시각 우세성 효과에 각 정보의 의미적 일치여부의 속성이 어떠한 영향을 주는 지를 살펴보고자 하는 것이 본 연구의 목적이다. 이에 목표자극이 되는 시각 정보와 청각 정보의 의미적 속성이 서로 일치하는 조건과 불일치하는 조건으로 구분하여 살펴보았다. 그 결과, 오류율의 분석에서는 의미적 일치 여부에 따라 시각 우세성 효과의 변화는 나타나지 않았으나, 반응시간의 분석에서는 의미적 일치 여부에 따라 시각 우세성 효과의 변화가 나타났다. 이는 과제의 특성에 따라 의미적 일치성이 시각 우세성에 미치는 효과가 달라질 수 있음을 시사하는 것이다.

• 한국안광학회지
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• 제10권3호
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• pp.165-171
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• 2005

본 연구는 단백질 침착에 의한 소프트콘택트렌즈의 직경 및 곡률반경의 변화를 밝히기 위해 수행되었다. 소프트콘택트렌즈를 인공누액 및 누액과 동일한 조성의 단백질 용액에서 2분, 10분, 30분, 1시간, 3시간, 6시간, 12시간, 24시간 담가둔 후, 고속촬영기(Fastcam ultima 1024)로 촬영하여 직경 및 곡률반경을 측정하였다. 인공누액에 오랫동안 담가둔 소프트콘택트렌즈일수록 소프트콘택트렌즈의 직경과 곡률반경의 변화가 컸다. 단백질만을 침착시킨 소프트콘택트렌즈의 경우도 유사한 양상이 나타나 직경 및 곡률반경이 감소하였다. 그러나 칼슘이온의 영향은 단백질에 비해 미약한 것으로 나타났다. 이상의 결과로 누액 단백질로 인하여 소프트콘택트렌즈의 직경 및 곡률반경이 감소되며, 이러한 결과는 렌즈 착용 후의 착용감저하와 관련이 있을 것으로 여겨진다.

• 한국의상디자인학회지
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• 제11권3호
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• pp.125-134
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• 2009

The purpose of this study is to analyze the formative characteristics of power-shoulder jacket shown in 08/09 F/W and 09/10 F/W London, Paris, Milan, New York collection and extract main expression words for development of semantic differential scales of visual image according to the change in shoulder angle and width of power-shoulder jacket. The result of this study is as follows. Power-shoulder jacket which were worn by 1980 business women have similar cutting with men's suit jacket, but have characteristics of exaggerating the body figure as exaggerated shoulder with pad and tight waist like an inverted triangle silhouette. Power-shoulder jackets shown in collections used glossy and glittering material and dark colors and formed slim silhouette with matches of shoulder line of temperate senses and casual wear. Like this, the power-shoulder jacket was expanded to daily casual wear from traditional formal wear. Main expression words of visual image of jackets according to the changes in angle and width of shoulder differ greatly depending on the expansion degree of angle and width of shoulder. Changes in shoulder angle may look tense, stiff and too much according to the amount of changes. However, it also has the image of sharp but dignified and charismatic. Also, it helps to show body figure more efficiently like being slim and looking taller. Related to the current trend emphasizing shoulder among women, it is evaluated to be stylish and trendy. When the expansion degree is not too much, changes in shoulder width partly show slim and slender waist under the influence of wider shoulder with basic tailored jacket image. However, when the expansion degree is enlarged, image related to the body figure is more definite compared to other visual images.

• 한국안광학회지
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• 제14권1호
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• pp.133-138
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• 2009

목적: 혈 중 알코올 농도의 증가가 시력 및 시 기능에 미치는 영향을 알아보고자 하였다. 방법: 체중 kg당 0.7g의 알코올을 섭취하고 1시간, 4시간 및 24시간이 경과한 후의 혈 중 알코올 농도, 시력, 굴절이상도, 폭주근점, 상대조절력, 사위, 그리고 상대폭주력의 변화를 측정하고 분석하였다. 결과: 알코올 섭취 1시간 경과 후, 혈 중 알코올 농도는 가장 높았고 근시화 및 측정 폭주근점, 양성 음성상대폭주력과 사위도의 변화가 가장 크게 나타났다. 그러나 알코올 섭취 24시간 경과 후에는 대부분의 검사값들이 알코올 섭취 전의 90%~99% 수준까지 복귀되는 것으로 나타났다. 결론: 혈 중 알코올 농도의 증가는 시력 및 시 기능 진단에 의의있는 변화를 일으킬 수 있으므로, 굴절검사 및 시 기능검사 전 알코올 섭취에 대한 사전 정보를 충분히 파악하여야 할 것이다.

• 대한물리의학회지
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• 제9권4호
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• pp.433-438
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• 2014

PURPOSE: The purpose of our study was to compare a 975-nm, 500-mW GaAlAs low-level laser therapy versus placebo low-level laser therapy with regard to the immediate changes on the myofascial trigger point of the dominant upper trapezius muscle in subjects with rounded shoulder posture. METHODS: Thirty-two male college students with rounded shoulder posture and shoulder pain consented to participate in the experiment. The subjects were randomly assigned to a 2-minute procedure with either an active GaAlAs low-level laser or a placebo GaAlAs low-level laser. The pressure-pain threshold and visual analog scale on tenderness at 3 kg were measured with an algometer before and after the laser treatments. RESULTS: The active GaAlAs low-level laser group showed significant changes in pressure-pain threshold and visual analog scale on tenderness at 3 kg (p<0.05). The placebo GaAlAs low-level laser group showed no significant changes in either pressure-pain threshold or visual analog scale on tenderness at 3 kg (p>0.05). CONCLUSION: An immediate effect was observed in pressure-pain threshold and visual analog scale on tenderness at 3 kg following a 2-minute application ($857.14J/cm^2$) of a 975-nm, 500-mW GaAlAs low-level laser to the myofascial trigger point of the dominant upper trapezius muscle in patients with rounded shoulder posture.

• Journal of Yeungnam Medical Science
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• 제31권2호
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• pp.152-156
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• 2014

We report on a patient who showed visual recovery following bilateral occipital lobe infarct, as evaluated by follow up functional magnetic resonance imaging (fMRI) and diffusion tensor tractography (DTT). A 56-year-old female patient exhibited severe visual impairment since onset of the cerebral infarct in the bilateral occipital lobes. The patient complained that she could not see anything, although the central part of the visual field remained dimly at 1 week after onset. However, her visual function has shown improvement with time. As a result, at 5 weeks after onset, she notified that her visual field and visual acuity had improved. fMRI and DTT were acquired at 1 week and 4 weeks after onset, using a 1.5-T Philips Gyroscan Intera. The fiber number of left optic radiation (OR) increased from 257 (1-week) to 353 (4-week), although the fiber numbers for right OR were similar. No activation in the occipital lobe was observed on 1-week fMRI. By contrast, activation of the visual cortex, including the bilateral primary visual cortex, was observed on 4-week fMRI. We demonstrated visual recovery in this patient in terms of the changes observed on DTT and fMRI. It appears that the recovery of the left OR was attributed more to resolution of local factors, such as peri-infarct edema, than brain plasticity.

• International Journal of Control, Automation, and Systems
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• 제6권4호
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• pp.607-612
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• 2008

This paper proposes a robot visual servo approach based on image appearance and a wavelet function neural network. The inputs of the wavelet neural network are changes of image features or the elements of image appearance vector, and the outputs are changes of robot joint angles. Image appearance vector is calculated by using eigen subspace transform algorithm. The proposed approach does not need a priori knowledge of the robot kinematics, hand-eye geometry and camera models. The experiment results on a real robot system show that the proposed method is practical and simple.

• 한국실내디자인학회논문집
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• 제19권5호
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• pp.56-66
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• 2010

This study proposes a thesis of architectural concepts and visual dimension systems, and the comparison between steps of spatial formation and dimensional alteration. The second chapter, to form the basis of this study, explains the dimensional alterations and changes of fundamental notion of space. In the third chapter, history of space, architectural formations, and changes of the viewpoint are analyzed as objects of study. The forth chapter presents the interrelation between dimensional alteration and the transition in fundamental notion of space, demonstrating that modern architecture has been born from these cultural movements. Lastly, the fifth chapter suggests possibilities on further studies and the following conclusions: First, architectural spaces have been changed, in accordance with the changes of culture, art and the tools that regulate architectural design. Proportional regulations by two-dimensional tools and depth through three-dimensional drawings are created. Second, architectural spaces gained depth by recognizing movement and time that have induced formations to change, creating various aesthetic backgrounds and attempts. Third, the aesthetic background and cosmologic spatial concept have led the visualization and changes of architectural experience. It created the design tools and shapes originated in dynamism and vitality. Forth, diversification of fundamental spatial concepts has become palimpsest and complex, and been divided into four dimensions; expressional two-dimensional space, perspective three-dimensional space, forth-dimensional space of time and experience, and imagery space formed by body movement. Fifth, architecture has been influenced by the elevated viewpoint that understands the whole world as a space. It has evolved from the two-dimensional proportion principle, change of depth and vanishing point to multidimensional space of movement and time. Sixth, changes of fundamental notion of space have arisen from changes of visual dimensions in times. In other words, space has been developed from two-dimensional space to multidimensional space by accepting visual dimension, grasping distance, direction, depth, height, velocity, movement, gravity, power and structure.