• 한국공간구조학회논문집
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• 제7권3호
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• pp.141-151
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• 2007

The appearance of many Glass Fiber Reinforced Plastic (GFRP) constructions look like ordinary steel construction, because GFRP has been imitated by the same way with the traditional steel's cross section as well as connection system. In terms of detachable connection, there was not enough appropriate option of GFRP connection, such as a traditional bolt connection for steel and wood structures. Most of all, from material characteristic of GFRP related to the deficient ductility, the shearstress principle of GFRP s not proper for the material property, which causes ineffective and not economic application of material. With this research problem, the innovative and detachable onnection system, which is more considered with appropriate material characteristic for FRP, is developed. Not only short time but also long time research with various connection variations is carried out.

• 패션비즈니스
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• 제18권5호
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• pp.82-98
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• 2014

The influence from the increased income and aging society has amplified the interest in the well-being trend and health. People tend to enjoy sports and outdoor life. The development of smart clothing containing heating function to help maintain body temperature has been actively researched after the mid 2000s. However, the domestic study on heating clothing is severely limited. Practical study on designing heating clothing which can be commercialized is needed. The purpose of this study is to develop a commercialized detachable heating vest design through collaboration with a heating vest manufacturer. The results of this study are as follows: 1) Conducted the interview with manufacturer and a demand survey with consumers in order to develop the heating vest design. 2) Developed heating vest design that reflected the wants in the demand survey and sketched the prototype of detachable heating vest. 3) Made a sample of the heating vest and tested the wearability to illustrate the result of this study. Overall, the wearing test result showed high satisfaction for both gender.

• KIEAE Journal
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• 제17권1호
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• pp.63-68
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• 2017

Purpose: Various studies to solve the problem of increased energy consumption in the buildings are being carried out recently. Especially, the economic feasibility and insulation performance of the air-cap have been verified so that various studies regarding the reduction of building energy consumption have been carried out. However, previous studies regarding the air-cap were only carried out based on the verification of its insulation performance according to the size and attachment position of the air-cap. Therefore, the purpose of this study is to suggest a detachable air-cap module for improving the performance of the windows, evaluate the performance based on cooling, heating and light environments and verify its effectiveness through a real-scale testbed. Method: In this study, the energy saving performance in the circumstance where there is no attachment of an air-cap (Case 1), the circumstance where there is the attachment of air-cap on the glass surface of window (Case 2) and the circumstance where there is the attachment of an air-cap on the window frame (Case 3) were compared in order to verify the performance of the detachable air-cap module (Case 4), and the electricity consumption of cooling, heating and lighting equipment to maintain the appropriate indoor temperature and Illuminance for each case was calculated and utilized as indicators for the performance evaluation. Result: The result of this study is as follows. 1) In this study, the detachable air-cap module which was easily detachable through the principle of the magnet was suggested. 2) When Case 4 is applied, the electricity consumption of cooling and heating equipment can be reduced by 27.5%, 13.2% and 3.4% in comparison with Case 1, Case 2 and Case 3 respectively. 3) When the air-cap is applied to the window, the lighting energy consumption increases by 4 % in comparison to the non application of the air-cap, and this factor or aspect should be considered when applying the air-cap. 4) According to the performance evaluation result in consideration of cooling, heating and light environments, Case 4 demonstrates an energy saving ratio of 22.6%, 10.6% and 2.7% in comparison to Case 1, Case 2 and Case 3 respectively, indicating that it is effective for improving the performance of windows.

• 한국의류학회지
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• 제26권6호
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• pp.811-820
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• 2002

The physical responses and subjective sensations of different cleanroom garments were compared in order to discover which cleanroom garment design could minimize pollution of the working environment by dust from the worker, maintain a pleasant microclimate and provide effective thermoregulation. A. Coverall with non-detachable hood, kimono sleeves (front), raglan sleeves (back), raschell net on the bodice B. Coverall with detachable hood, kimono sleeves (front), raglan sleeves (back), raschell net on the bodice C. Separate top with non-detachable hood, kimono sleeves (front), raglan sleeves (back), raschell net on the bodice D. Coverall with non-detachable hood, set-in sleeves, raschell net on the bodice E. Coverall with non-detachable hood, raglan sleeves (back), l00% cotton inner wear (upper body) The results of the experiment were as follows. Because the hood covered the shoulder and the chest areas, the chests temperature of the worker wearing garment E was quite higher than those wearing other garment designs. For fabric that has been coated in order to prevent dust, layered designs should be avoided in order to prevent skin temperature from rising. Compared with layers of underwear, it would be more effective to attach a see-through raschell net which clings to the body. Thermal sensations were also highest in garment E, reinforcing the finding that layered designs should be avoided. Through the experiment, it was found that a new material coverall with a non-detachable hood was effective in minimizing dust, suppressing skin temperature increases, maintaining a superior microclimate and providing pleasant subjective sensations.

• 대한가정학회지
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• 제30권1호
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• pp.115-131
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• 1992

The purpose of this study is the investigation of the physically handicapped childrens' residentical life, using furniture and opinion of auxiliary furniture ot find out alternative forms of desirable furniture. This study consists of two parts: a survey of residential life and furniture usage and a new chair design based on the survey. Documentary research, observational investigation and questionaire survey methods were used. According to the survey, a chair was chosen as the most needed piece of furniture. The alternative chair was designed to accomodate to the individual physical needs of each child. The structural charasteristics of the chair form consist of four parts: 1) basic seat 2) supporting metal frame 3) detachable chair legs 4) detachable table top. Auxilliary options include adjustable parts such as a head rest, seat belt, arm rest and pedestal.

• 대한전기학회논문지:전기기기및에너지변환시스템부문B
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• 제49권4호
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• pp.265-271
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• 2000

A non-contact battery charger for cellular phone is designed using half-bridge series resonant converter. This converter utilizes series resonance to reduce the undesirable effect of large leakage inductance of the detachable transformer and ZVS operation can reduce switching loss and switching noise. In this paper, analysis and design procedure of half-bridge series resonant converter with detachable transformer is presented. The input voltage is 85VAC∼270VAC, and the output voltage and current is 4.1V and 800mA, respectively. Furthermore, a method of calculating the secondary current of the transformer to control the battery charging current in the constant current charging mode is proposed. The performance of the charger is verified through experiments.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2015년도 춘계학술대회
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• pp.845-847
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• 2015

본 논문에서는 현재 웨어러블 디바이스 기술을 둘러싼 이슈 중에서 가장 중요한 (1)짧은 배터리 수명, (2)스마트폰에 의존할 수밖에 없는 네트워크 범위로 인한 호환성 및 확장성 부족, (3)크기와 무게로 인한 사용자의 개성을 살릴 수 없는 디자인 문제를 해결하기 위하여 "사용자의 용도에 따라 심박, NFC, 교통카드, GPS와 같은 센서를 선택하여 장착할 수 있는 탈부착형 스마트 기기 제어 디스플레이 메인 모듈과 배터리를 장착한 액세서리 모듈로 분리 가능한 웨어러블 디바이스"를 개발한다.

• 정보처리학회논문지A
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• 제15A권1호
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• pp.61-68
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• 2008

본 논문에서는 MPEG-2, MPEG-4, H.264/AVC 및 VC-1 코덱 표준을 동시에 지원하는 멀티 포맷 비디오 복호기 (MFD)의 설계 방법을 제안한다. 제안하는 MFD는 디지털-TV SoC 에 필요한 고사양의 고화질급 비디오 처리를 목표로 하였다. 리스크 프로세서, 온칩 메모리 및 주변 회로 등의 크기가 큰 공용 자원들을 공유하여 크기를 최소화 하였다. 또한, 코덱 별로 추가 및 제거가 용이한 분리 가능한 구조를 사용하였다. 이러한 구조는 이미 설계되고 검증된 코덱의 안정성의 유지를 용이하게 해준다. 설계된 MFD는 65nm 공정에서 크기가 약 2.4M 게이트 이며, 동작속도는 225MHz이다. 본 논문에서 제안한 MFD는 현재까지 알려진 MFD 중 최고 성능인 고화질급(1080p@30fps) 이상의 비디오 디코딩을 지원하며, 가장 많은 종류의 비디오 코덱 표준을 지원한다.

• 한국안광학회지
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• 제17권4호
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• pp.435-440
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• 2012

목적: 본 연구는 $2{\times}$ 배율을 가지는 도트사이트 장치의 개발에 관한 것이다. 방법: 무배율 도트사이트로 먼 거리를 주시할 때 목표물을 확대해서 볼 수 있도록 하기 위해 기존 무배율 도트사이트에 착탈식으로 장착할 수 있는 새로운 광학계를 개발한다. 이는 기존 무배율($1{\times}$) 도트사이트를 $2{\times}$ 배율 도트사이트로의 전환을 필요에 따라 쉽게 할 수 있도록 하기위한 것이다. 결과: 배율이 없는 도트사이트에 착탈할 수 있는, doublet 렌즈가 쌍으로 구성되는, $2{\times}$ 배율 어포칼 광학계를 설계 제작하였다. 이를 사용하였을 때 우리는 외부 목표점을 2배 확대하여 조준할 수 있어서 조준의 정확성을 더욱 높일 수 있었다. 결론: 배율이 없는 일반 도트사이트에 착탈할 수 있는 $2{\times}$ 배율 어포칼 광학계를 설계 제작할 수 있었다. 이것에 의해 외부 목표점을 2배 확대하여 조준할 수 있도록 함으로서 조준의 정확성을 더욱 높일 수 있게 되었다.

• 한국의류학회지
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• 제26권12호
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• pp.1756-1764
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• 2002

본 연구의 목적은 의복시스템 내 에서 착탈이 가능한 라이너 가 있을 때 얼마만큼의 보온성 이 증가되는가를 알고자 하는 것이다. 서로 다른 섬유조성 과 두께를 가지는 3개 의 의복앙상블을 선정하여 움직일 수 있는 마네킨을 사용하여 14$^{\circ}C$로 조절되어 있는 인공기후실에서 보온성을 측정하였다. 그 결과 라이너 사용 후 보온성이 증가되었는데 그 정도는 라이너 의 두께 와 섬유조성에 따라서 다르며 약 0.5 clo 증가하였다. 이 결과로부터 착탈 가능한 라이너의 사용으로 추운기후에 어느 정도 적응 할 수 있는가를 확인할 수 있었다.