• Journal of the Institute of Electronics and Information Engineers
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• v.50 no.2
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• pp.210-220
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• 2013

Recently, as we move toward a society with an increasingly aged population, wearable U-health devices in various shapes with smart wear have been developed in order to conveniently measure health variables without using hands in daily life or at home. However, the problem is that only supply of the wearable U-health devices is focused and its applicable devices are studied and developed, which has resulted in lack of awareness of importance of performance evaluation. In this study, two electrodes were fabricated using conductive fabric which can be used as electrode if attached to wearable U-health devices or smart wear in order to measure ECG signal. Two electrodes those were fabricated using conductive fabric were compared the correlation, impedance and CMRR with patch typed Ag-AgCl electrode-normally used for measurement of ECG signal, so that the study would find out if the fabricated electrode can be used with the wearable U-health devices by testing and evaluating performances.

• Composites Research
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• v.28 no.3
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• pp.81-88
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• 2015

In this paper, we evaluate structural integrity of the wearable robot by using finite element analysis, which is made of CFRP(Carbon Fiber Reinforced Plastic) composite materials to be lightened. On the basis of the ASTM(American Standard Test Method), mechanical tests of the material are carried out in tensile, compressive and shear test for analytical evaluation. With the tested composite material, the main frame and two femoral frames of the robot is redesigned to satisfy the lightening design requirements. It is verified with the structural analysis that the redesigned frames are good for the part of the wearable robot.

• Proceedings of the Korean Society for Emotion and Sensibility Conference
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• 2001.11a
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• pp.164-168
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• 2001

의복착용시의 쾌적성은 의복의 보온력 조절에 의해 의복내 기후를 형성하여, 체온을 일정하게 유지하게 하는 역할을 하므로 건강과 직접적인 관련이 있다. 그러므로 건강이나 쾌적성 평가의 측면에서 의복내기후가 체계적으로 파악되어야 한다. 따라서 본 연구에서는 사무실 환경에서 의복착용시 착용실험을 실시하여 계절적인 의복내기후의 변동을 살펴보았다. 그 결과 겨울 31.8$^{\circ}C$, 48.6%, 봄 33.5$^{\circ}C$, 47.9%, 여름 32.7$^{\circ}C$, 64.6%, 가을 31.9$^{\circ}C$, 43.6%인 것으로 나타났다. 또한 계절간의 차이는 의복내온도에 있어서 가을과 겨울간에는 차이가 없었으며, 봄과 여름간에는 차이가 있었다. 의복내습도는 여름과 겨울간에는 차이가 없었으며, 다른 계절간에는 차이가 뚜렷하였다.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• fall
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• pp.232-234
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• 2021

최근 휴먼-컴퓨터 인터페이스, 가상현식, 증강현실, 지능형 자동차등에서 얼굴표정 인식에 대한 연구가 활발히 진행되고 있다. 얼굴표정인식 연구는 대부분 맨얼굴을 대상으로 하고 있지만 최근 코로나-19로 인해 마스크 착용한 사람들이 많아지면서, 마스크를 착용했을 때의 표정인식에 대한 필요성이 증가하고 있다. 본 논문은 마스크를 착용했을 때에도 실시간으로 표정 분류가 가능한 시스템개발을 목표로 구동에 필요한 알고리즘을 조사했고, 그 중 Tiny-YOLOv3와 ResNet50 알고리즘을 이용하기로 했다. 얼굴과 표정 데이터셋 등에서 모은 이미지 데이터를 사용하여 실행해 보고 그 적절성 및 성능에 대해 평가해 보았다.

• The Journal of the Korea Contents Association
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• v.10 no.5
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• pp.267-276
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• 2010

The purpose of this study was to investigate the variations in gait parameters according to arm slings used in healthy adults. Twenty healthy adults (9 males, 11 females) participated in this study and walked at self-selected speeds on a GAITRite-instrumented carpet. They were randomly assigned conditions: without an arm sling, a care sling, a Harris hemi arm sling, a CVA sling, and a Rolyan humeral cuff sling. The following gait parameters were analyzed: the temporo-spatial parameters of gait velocity, swing phase, single support, cadence. In the comparison of parameters in each trial, step length was statistically significantly changed(p=.002). The right step length was significantly decreased in the Harris hemi arm sling and increased in the Rolyan humeral cuff sling when compared with no sling. This study found that several different types arm slings varied gait pattern in healthy adults.

• The Korean Journal of Pesticide Science
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• v.17 no.1
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• pp.50-59
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• 2013

This study was performed in order to assess the risk of korean orchard worker due to pesticide exposure. The amount of pesticide exposure was calculated based on the informations of 97 kind of items that are used the form of a spraying in Korean orchard. The risks of these pesticides were assessed to compare the exposure amount with AOEL (acceptable operator exposure level) which was released form developed countries. When the operator sprayed pesticides using speed sprayer, 74.2% of pesticide items showed the risk for operator if the operator have not worn the personal protective equipment (PPE), and 42.3% of pesticide items showed the risk for operator if the operator have worn the PPE. In case of using motor sprayer, 64.1% of pesticide items showed the risk for operator if the operator have not worn the PPE, and 19.4% of pesticide items showed the risk for operator if the operator have worn the PPE. This result was indicated that the risk of pesticide against the operator was very high in korean orchard operator.

• Journal of Korean Ophthalmic Optics Society
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• v.15 no.2
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• pp.137-144
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• 2010

Purpose: This study was to evaluate the clinical performance of 1-Day disposable toric soft contact lenses (TSCL) and to compare the visual performance with glasses and TSCL. Methods: In a two-week investigation of 'prism ballast' designed TSCL, occular refractions in 15 (30 eyes) healthy subjects were within the range of -2.75 D TO -8.00 D spherical power and -0.75 DC to -2.25 DC cylinderical power (with-the-rule). Subjects were assessed the clinical performance (orientation, centration, movement, tightness, rotation recovery, symptoms) of TSCL and compared binocular vision and contrast sensitivity with corrected glasses and TSCL at initial and two-week follow-up visits. Results: The prism-ballast design TSCL achieved better orientation, rotation recovery and symptoms over 2 week period. There was no statistically significant difference between spectacles and TSCL with respect to measuring binocular vision and contrast sensitivity. Conclusions: The clinical performance was good with prism-ballast design toric soft contact lenses. Evaluation of binocular vision and contrast sensitivity did not show the differences between spectacles and TSCL correction. This study suggests that TSCL wearers can be achieved similar visual performance for spectacles wearers.

• Proceedings of the Korean Society of Computer Information Conference
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• 2021.07a
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• pp.293-294
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• 2021

본 연구는 어업에 종사하는 어업인을 대상으로 작업복 착용실태와 불편사항 및 문제점, 작업복에서 요구되는 기능 등을 알아보고 이를 통해 어업에 적합하고 작업 효율성을 높일 수 있는 기능적 작업복 개발에 필요한 요구사항을 파악하고자 하였다. 본 연구는 전남지역의 어업인 124명을 대상으로 하였다. 분석은 SPSS 26.0 프로그램을 활용하였다. 본 연구에 참여한 어업인은 50대가 가장 많았고 남성이 약 85%이며, 근무경력은 10년 이상 20년 미만이 많았다. 작업복은 상하 분리형을 좋아하며, 방수성을 가장 중요하게 생각하였다. 착용 작업복에 대한 만족도는 땀투과성을 제외한 모든 항목에서 보통으로 평가되었다. 선호하는 색상은 무채색이 가장 많고 상하 분리형 스타일과 지퍼 여밈을 좋아하였다. 연령에 따라 작업복 구입 시 고려사항에 유의미한 차이를 나타내 30대 이하와 40대는 활동성을, 50대는 내구성을, 60대는 방수성을 가장 중요하게 생각하였다. 연령에 따른 작업복 만족도는 활동성, 압박감, 탈착성, 맞음새, 두께감, 기능성, 보온성, 옷의 무게감 등에서 유의미한 차이를 나타냈다. 본 연구를 바탕으로 하여 실용적이고 기능적인 어업용 작업복 개발이 이루어져야 할 것으로 생각된다.

• Korean Journal of Human Ecology
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• v.19 no.4
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• pp.667-674
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• 2010

This study evaluated the convenience and heating performance of 4 heated vests on the market through a trial of the vests. Participants were four healthy men who wore the garments outside in cold temperatures typical of the garments' real conditions of use. As the results, all the participants preferred the product, having an easily operable controller in ergonomic aspects and the good insulation for keeping the body temperature. The heating performance of vests was the most important factor in selecting the best product in this test. Indeed, the vests themselves found not to be sufficiently warm in the experimental condition. Thus, heated vests with the enhanced heating performance should be developed so that temperatures in the allowed range can be safely accessed.

• Proceedings of the Korean Fiber Society Conference
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• 2001.10a
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• pp.371-374
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• 2001

최근 들어 흡방습성이 우수한 의류소재가 많이 출시되고 있다. 의류소재의 흡방습성화의 목적은 착용시의 쾌적성을 향상시키기 위함이다 최근에는 더욱이 지구환경보전과 에너지절약 환경하(하계 28$^{\circ}C$, 동계 18$^{\circ}C$)에서도 쾌적한 의료소재의 개발이 시장에 출시되고 있다. 이에 본 연구에서는 비용제용 코팅방법을 이용한 환경 친화형 쾌적섬유소재를 개발하여 개발섬유소재의 물성평가와 더불어 착용시의 쾌적성 평가를 기존 쾌적섬유소재(예를 들면 하이포라 섬유소재 등)와 비교연구를 시도하여 보았다. (중략)