• Physical Therapy Korea
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• v.8 no.4
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• pp.63-69
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• 2001

이 연구는 성인 편마비 환자를 대상으로 PLS (Posterior Leaf Spring) 착용이 기립 균형에 미치는 영향을 알아보는 것이었다. 신발만 착용하였을 때의 기립조건과 신발과 PLS를 동시에 착용한 기립조건의 평균평형지수가 맨발로 서 있을 때의 기립조건에 비하여 높았다. 그러나 신발만 착용한 기립조건과 신발과 PLS를 함께 착용한 기립조건하에서의 평균평형지수의 차이는 없었다. 따라서 편마비 환자의 기립균형과 관련하여 PLS만을 착용한 효과와 신발만을 착용한 효과를 비교하는 연구가 필요하다.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• fall
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• pp.201-204
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• 2021

최근 전동 킥보드 사용량이 크게 늘었으나, 다른 이동수단 대비 낮은 안정성과 사용자들의 헬멧 착용에 대한 인식 부족으로 인해 사고의 위험성이 큰 상황이다. 이에 대하여 정부는 헬멧 착용을 강제하는 법률을 제정하였으나, 경찰력의 한계에 따른 단속 미비로 여전히 헬멧 착용율은 낮다. 본 연구는 YOLO v3 알고리즘을 통해 학습시킨 딥러닝 모델을 활용하여 도로 상황을 촬영한 동영상 내에서 헬멧 착용자와 미착용자를 구분하고 미착용자 탐지 시 알람을 제공하는 시스템을 제시한다. 기존 YOLO 알고리즘 및 신경망을 적용하되, 전동 킥보드 데이터를 새로 수집하고 클래스를 구분하여 학습시켰다. 소수의 탐지 및 분류 오류를 보정하기 위해, 히스토그램 간 유사도를 측정해 최종적으로 객체를 추적 및 확정하고, 객체에 대한 헬멧 착용 여부를 통계적으로 확인한다.

• Journal of Korean Ophthalmic Optics Society
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• v.17 no.4
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• pp.403-410
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• 2012

Purpose: The purposes of this study are to investigate accommodative response among emmetropes, spectacle wearer and contact lens wearer, and correlation between refractive error and accommodative respons for each group. Methods: The 72 subjects(144 eyes) who do not have any ocular diseases were participate in this study. Subjects were categorized into emmetropes, spectacle wearer and contact lens wearer by refractive error using closed-field auto-refractometer. We measured dominant eye, naked/habitual visual acuity and refractive error of monocular/binocular vision of refractive error for far/near distance with open-field auto-refractometer and calculated accommodative lag. Results: There were no significant difference of accommodative lag between right and left eye dominant and non-dominant eye, monocular and binocular vision, and spectacle lens wearer and contact lens wearer, However the accommodative lag of binocular vision was severe than monocular vision at near. The lag of myopia was larger than emmetropes, and male was larger than female. Significant correlation was found between refractive error and accommodative lag in total subjects and the same result was found in emmetropes and contact lens wearer. However there were no significant correlation in the spectacle wearer. Conclusions: There were significant difference between emmetrops and myopes in terms of accommodative lag, however accommodative lag of spectacle wearer was not different with contact lens wearer in myopes. There were also significant correlation between refractive error and accommodative lag in emmetropes and contact lens wearer, but the accommodative lag of spectacle wearer was not significantly correlated with refractive error.

• Journal of Korean Ophthalmic Optics Society
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• v.16 no.3
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• pp.255-264
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• 2011

Purpose: To study the effect of hyaluronic acid(HA), which was widely used in artificial tears, multi-purpose solution(MPS), cosmetics, and drug acting on the musculo-skeletal system, in wettability and comfort of contact lens, we compared HA including lens(+HA) with HA excluding lens(-HA) by clinical evaluation. Methods: During four weeks, the selected 28 university student volunteers who did not have any eye disease wore +HA contact lens on their right eyes, and -HA contact lens on their left eyes, and then compared right eyes to left eyes as control. After prescribing by spherical equivalent calculation, over-refraction by auto-refractometer, and contact lens wearing for two weeks and four weeks, tear evaluation, the anterior of eyes examination, fitting convenience evaluation, surface wetting test, surveys were checked up. Results: Compared with the control group (-HA contact lens), +HA contact lens provided better wetting properties. The amount of released tear in -HA contact lens group became less in four weeks than before, but that in +HA contact lens group showed no significant difference from the initial one. In terms of the redness in eye, there was no significant difference between +HA and -HA contact lens groups. Fitting of +HA contact lens on eye was much easier than the control, -HA contact lens. From the results of survey, comfort, wettability, ease of cleaning, and dryness of eye in +HA contact lens group were generally better than those of -HA group, but redness and contact lens handling showed little difference. Conclusions: The addition of HA in soft contact lens(+HA) may enhance the wettability of lens during lens wearing, resulted in the better comfortable wearing of lens eventually.

• Proceedings of the ESK Conference
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• 1996.10a
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• pp.97-102
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• 1996

본 연구는 서울의 20개 종합병원과 220명의 소아환자를 대상으로 소아 환자용 환자복의 사 9용 실태 및 문제점을 파악하여소아환자가 보편적으로 착용할 수 있는 소아환자복의 설계를 위한 기초 자료를 수집하고자 실시되었다. 조사결과 종합병원에서 제공하는 소아환자복은 대부분 성인용 환자복과 유사한 형태와 색상을 제공하였다. 소아환자복의 착용 여부 조사결과 환자복은 상의가 하의보다 착용율이 높았으며, 12세 이하에서 연령이 높아질수록 착용율이 높 게나타났다. 현재 사용하고 있는 환자복에 대하여, 치수 불만족과 착탈의 불편이 가장 큰 문 제점으로 지적되었다. 소아환자복에서 중요시되어야 할 점으로 치수, 청결성, 보온성, 촉감, 디자인의 순으로 나타났다. 이상의 연구 결과는 소아환자들의 신체 성장에 따른 체형의 다양 성을 만족시킬 수 있는 환자복의 치수 및 기능성이 향상된 형태의 소아환자복이 필요한 것으로 나타났으며, 소아환자들은 성인용 환자복과는 차별화된 형태및 직물의 특성을 갖춘 새로운 디 자인의 개선이 요구됨을 시사한다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2020.11a
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• pp.93-95
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• 2020

주 5일제 근무, 개인 여가문화 확산, 국민 소득 증대 등으로 인해 해양을 레저의 목적으로 이용하는 사람들이 증가하고 있으며, 이러한 이용객의 증가에 따라 사고 발생의 개연성도 함께 증가하고 있는 상황이다. 우리나라에서는 선박을 이용한 레저활동의 경우에는 안정장비의 착용을 의무화하고 있지만, 연안 해역에서의 해양활동에 대하여는 안전장비 착용 의무화가 시행되지 않고 있다. 따라서, 본 연구에서는 연안 이용객에 의한 사고통계 데이터 분석을 바탕으로 연안 이용객의 안전장비 착용의 필요성에 대하여 고찰하였다. 또한, 분석된 내용을 바탕으로 안정장비 착용 의무화 방안에 대하여 제안하였다.

• Journal of Korean Home Economics Education Association
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• v.22 no.1
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• pp.137-148
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• 2010

The usage status of trousers as school uniform for girl's middle and high school students in Seoul and the perception on trousers as school uniform were analyzed. Students who wore 'skirts only' were the greatest and students who wore 'trousers only' were higher in the case of winter uniform than in summer uniform. The most popular reason to wear skirts was 'because most of their fellow students wore skirts' in both winter and summer. The main reason for wearing trousers was 'because it was easy to cope with changes in temperature' in winter and 'because it allowed more comfortable movements' in summer. Students who wore trousers were generally satisfied with wearing trousers as school uniforms. However, they showed a low degree of satisfaction about design and color of trousers. The students preferred slim and straight trousers, and black col or with beige and blue being the next color. Students in general had low level of recognition for the need to wear trousers. Students perceived trousers as being cold-proof and comfortable for physical activities. But they also perceived that trousers were not suitable for improving their appearances and expressing their characteristics. Especially, the students who wore trousers tended to think that trousers reduced their cares for their personal attire and that trousers were good for wearing after school, but the students who did not wear trousers were found to think contrary.

• Journal of Korean Ophthalmic Optics Society
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• v.21 no.1
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• pp.11-21
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• 2016

Purpose: The aim of this study was to analyze the difference in tear film stability according to the wearing time when wearing clear and circle soft contact lens(circle lens) made of same material. Methods: The clear and circle contact lenses of hilafilcon B and nelfilcon A materials were respectively applied on the subjects classified as normal and dry eyes depending on their tear volume, and their tear film stability was investigated by measuring the non-invasive tear film break-up times, lens centration and the first appearing area of tear breakup after 30 mins and 6 hrs of lens wearing. Results: Non-invasive tear film breakup time significantly reduced with increase of the wearing time for normal and dry eyes when wearing clear and circle contact lenses. The starting ratio of tear film break-up was higher at the peripheral area of clear and circle lenses in all two different materials, and higher at the peripheral area of dry eyes than normal eyes. Starting ratio of tear film break-up was higher at the peripheral area of nelfilcon A lenses compared with hilafilcon B lenses, however, its change with the increase of wearing time showed a different aspect. The number of tear film break-up per unit area when wearing circle lenses of nelfilcon A increased at the central area with the wearing time while its number was higher at the peripheral area when wearing circle lenses of hilafilcon B. The centration of clear lenses made of two materials was closer to pupil compared to circle lenses with the increase of wearing time, however, a larger decentration was shown in dry eyes compared with normal eyes. Conclusions: The research revealed that an effect on tear film stability may be changed by clear lenses as well as circle lenses with coloring process according to the increase of wearing time, and the factors affecting on tear film stability may also vary depending on lens materials. Thus, the appropriate lenses should be selected by the consideration of lens material as well as coloring method/dyes according to the wearers' habit such as daily wearing time and wearing period when trying to wear clear and circle lenses.

• Journal of the Society of Disaster Information
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• v.14 no.1
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• pp.72-78
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• 2018

This study was conducted on workers in high risk groups. And the effects of improper equipment wear on the recognition of safety accidents and job exhaustion. In addition, the mediating effect of the recognition of safety accident risk was identified. The results of the analysis are as follows. Because high-risk workers wear inappropriate equipment, emotions are depleted and personalization problems arise. And the mediating effect of the recognition of safety accident risk. Therefore, there is a need to provide generous support to ensure that high-risk workers are able to work properly in hazardous workplaces, so that they can wear appropriate equipment to defend the risks.

• Journal of Korean Ophthalmic Optics Society
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• v.15 no.1
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• pp.47-53
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• 2010

Purpose: This study was performed to achieve an acceptable piggyback fit utilizing each subject's own GP lenses, in subjects with regular low myopic astigmatism. Methods: A randomized, prospective study of 15 subjects with the diagnosis of low myopic astigmatism was conducted. Nine subjects were female and 6 were male, and mean age was: 23.73${\pm}$1.68 years. Subjects were evaluated before participate on this study and then also evaluated with period of at two hours and two weeks after obtaining their lenses. All subjects were submitted to the following tests: measurement of comfort level by means of the analogical visual scale, best corrected visual acuity and over-refraction at distance. contrast sensitivity and stereo acuity. After evaluating the fit of plano soft lens, we applied each subject's own GP lens on top. Results: Vision, visual performance and satisfaction of piggyback contact lens system were stable, if not improved, for the 15 subjects when the data was compared to the patients' wear of rigid gas permeable contact lenses. Fit with a piggyback system had the same or improved comfort, visual acuity and contrast sensitivity compared to previous GP lens wear alone. The visual acuity, contrast sensitivity and stereo acuity did not show differences in relation to the studied lens type. Conclusions: These results suggest that it is possible to achieve a successful piggyback lens fitting utilizing a patient's own GP lens. The piggyback lens system satisfied the visual performance and visual requirements of this subject with GP lens alone for the correction of low myopic astigmatism.