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윤진철,강병근 대한건축학회 2000 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.20 No.2
A trend could be found in the special education, bo shift from separation education to inclusion education. But, it's regret that the inclusion education looks a simple phase in Korea. Because special class takes the load in the work. Therefore I'd like to show that current unfavorable surroundings could be improved by the sound architectural plan far the purpose of inclusion education movement. Used study methods are as follows, sampling and analysis toward surrounding-elements of school by the research on the actual condition of the handicapped and the survey os connection laws, theories and abroad cases.
윤진철(Jin-Chul Yun),주정명(Jungmyoung Ju),황종현(Jong-Hyun Hwang),이수목(Soo-Mok Lee) 한국에너지학회 2014 한국에너지공학회 학술발표회 Vol.2014 No.4
CO₂ 배출 규제와 에너지 소비 절감의 요구가 늘어남에 따라, 버려지는 열을 수확하여 전기를 생산하기 위한 열전발전 연구가 최근 활발히 이루어지고 있다. 본 연구는 폐열 에너지회수장치로 사용하기 위한 열전모듈의 발전 특성을 분석하기 위해 수행되었다. Bismuth telluride로 제작된 열전모듈에 다양한 온도 조건을 부여하며 이에 따른 열전 거동을 분석하였다. 또한 다양한 온도 조건에서의 열전모듈의 발전 효율을 실험 및 이론에 의해 분석하였다. 이로부터, 열전모듈로 열에너지를 보다 효율적으로 회수하기 위한 방안을 제시하였다. Recently, due to limitation of CO₂ gas emission and increase of demand to reduce energy consumption, lots of researches are conducted to harvest wasted heat energy with thermoelectric module to produce electricity by Seebeck effect. This study was conducted to analyze characteristics of thermoelectric module to apply for heat energy harvesting device. Thermoelectric module composed of bismuth telluride was tested with various temperature conditions to analyze thermoelectric behavior of the module. Power geneation efficiency of the thermoelectric module for various temperature condition was analysed with both experimental and theoretical methods. From the results, method to harvest wasted heat energy with thermoelectric module more efficiently was proposed.
전자계-구조 연계해석에 의한 폐쇄배전반의 구조안전성 평가
윤진철(Jin-Chul Yun),홍윤석(Yun-Seok Hong),김진태(Jin-Tae Kim),김준연(Joon-Yeon Kim) 대한기계학회 2012 대한기계학회 춘추학술대회 Vol.2012 No.11
An electric switchboard is a component of electricity supply system which divides the main current into smaller currents for distribution. Protective circuit breaker for abnormally excessive current is also an important role of switchboard. Metal clad switchgear is one kind of switchboard which is safe, ecofriendly and easy to achieve high voltage application. When the excessive electric current flows in conducting parts of the metal clad switchgear, large electromagnetic force would be generated and structural damage can occur to the main components. In this study, design safety of HHI metal clad switchgear is confirmed by numerical analysis method. By electromagnetic-structure coupled analysis, electromagnetic force generated in the metal components and mechanical stress due to the force are calculated consecutively. For the structural integrity evaluation, dynamic effect of the electromagnetic force is considered by applying modal analysis. From the analyses results, structural integrity of HHI metal clad switchgear is confirmed.
최재만,윤진철,이남용 한국IT정책경영학회 2015 한국IT정책경영학회 논문지 Vol.7 No.1
Cutting edge weapons systems are being developed as system of systems, sending and receiving data with other weapons systems in order to facilitate real time execution of operations. Under this context, the most important factor that determines the success of an operation is interoperability. Considering that numerous systems are synchronized, the various systems continuously change due to maintenance and repair as well as capability improvement. This study seeks to check the entire process for interoperability of system of systems from requirement and acquisition and to operation and maintenance whether the interoperability is continuously maintained as planned from its initial stage. The study also proposes a suggestion for improvement of this checking process.
홍윤석(Yun-Seok Hong),윤진철(Jin-Chul Yun),권태훈(Tae-Hoon Kwon),서연호(Yeon-Ho Seo),배재득(Jae-Deok Bae) 대한기계학회 2012 대한기계학회 춘추학술대회 Vol.2012 No.11
Fluid catalytic cracking (FCC) is one of the most important conversion process used in petroleum refineries. It is widely used to convert the high-boiling and high-molecular weight hydrocarbon fractions of petroleum crude oils to more valuable oil products. The purpose of this study is to verify the structural integrity of integrated system including reactor, regenerator and catalyst standpipes which are the core facilities of FCC. The fundamental process design of FCC is provided by licensor and the details of reactor and regenerator are designed by using an in-house program based on the ASME Sec.Ⅷ, Div.1. To get more conservative results, a variety of load conditions such as dead weight, pressure, thermal expansion, seismic and wind loads are applied in the structural strength assessment. The structural piping analysis considering the latest design specification of the specific vendor items like expansion joint, slide valve and spring hanger is performed and its result is provided to the related vendors to confirm their performance once more. From the comprehensive analysis results, it is concluded that the analyzed system is designed to have sufficient flexibility to prevent pipe movements from the elastic failure due to the overstress of the pipe components or anchors. The analysis results meet the requirement of all applicable design codes and licensor’s specification.
콜라겐과 무세포진피를 이용한 혼합형 인공피부 개발 및 쥐 모델에서 창상치료 적용
이동혁(Dong Hyuck Lee),윤진철(Jin Chul Youn),이정희(Jung Hee Lee),김인섭(In Seop Kim) 한국생물공학회 2014 KSBB Journal Vol.29 No.1
The aim of this study was to develop a composite human skin equivalent for wound healing. Collagen type1 and acellular dermal matrix powder were utilized as the scaffold with dermal fibroblasts and keratinocytes for the development of a composite human skin equivalent. Fibroblast maintained the volume of composite skin equivalent and also induced keratinocytes to attach and proliferate on the surface of composite skin equivalent. The composite human skin equivalent had a structure and curvature similar to those of real skin. Balb-C nu/nu mice were used for the evaluation of full-thickness wound healing effect of the composite human skin equivalent. Graft of composite skin equivalent on full-thickness wound promoted re-epithelialization and granulation tissue formation at 9 days. Given the average wound-healing time (14 days), the wound in the developed composite skin equivalent healed quickly. The overall results indicated that this three-dimensional composite human skin equivalent can be used to effectively enhance wound healing.
허성일(Heo, Seongil),윤진철(Yun, Jincheol),오경석(Oh, Kyeongseok),한경섭(Han, Kyungseop) 한국신재생에너지학회 2005 한국신재생에너지학회 학술대회논문집 Vol.2005 No.06
Graphite reinforced conductive polymer composites for PEMFC bipolar plates were fabricated by the compression molding technique. Graphite powder was mixed with an phenol resin to impart electrical property in composites. In this study, conductive polymer composites with high filler loadings(>60wt.%) were manufactured to accomplish high electrical conductivity above 100S/cm. The level of compaction is important because graphite powder increase electrical conductivity of composites by direct physical contact between particles. The optimum molding pressure according to filler was proposed experimentally. Various tests(electrical conductivity, flexural strength, compressive strength, leach test, etc) were carried out to verify the performance of fabricated composites for PEMFC bipolar plates. Fabricated composites have good electrical conductivity and mechanical strength. The results of leach test and contact angle measurement showed similar characteristics compared with commercial bipolar plates.