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홍성민(Sung-Min Hong),제태진(Tae-Jin Je),최두선(Doo-Sun Choi),유영은(Yeong-Eun Yoo),이응숙(Eung-Suk Lee),이동주(Dong-Ju Lee),이종찬(Jong-Chan Lee) 한국기계가공학회 2006 한국기계가공학회 춘추계학술대회 논문집 Vol.2006 No.-
Manufacturing of optical waveguide master mold using vertical embossing mold with mechanical shaping method has an advantage of simple processing. Especially, mechanical processing method is most suitable for the processing of mold set up several planar optical waveguide in large area and the processing of various sectional shapes and high aspect ratio waveguide. This paper presents manufacturing of optical waveguide master mold with the mechanical shaping method making it possible to process large area, high precision master mold in low cost. Also the problem of tool alignment is solved in manufacturing of optical waveguide master mold and the processing method minimized bur problem in processing surface is suggested.
배전용 정지형 보상기의 위상변이를 이용한 순시 유효/무효전력 보상
홍성민(Sung-Min Hong),최종우(Jong-Woo Choi) 전력전자학회 2010 전력전자학술대회 논문집 Vol.2010 No.7
DSTATCOM(Distribution STATic COMpensator) is one of the custom power devices, and protects a distribution line from unbalanced and harmonic current caused by non-linear and unbalanced loads. Conventional researches use a LPF(Low Pass Filter) to eliminate ripple component at the calculation of compensation current. This paper proposes a calculation of compensation current using phase shift that can be a counterproposal of conventional methods using LPF.
CIPP 평가모형 구성요소에 기초한 중소기업 훈련 컨소시엄 운영기관 담당자의 인식조사
이영민 ( Young Min Lee ),최영섭 ( Young Sub Choi ),홍성민 ( Sung Min Hong ) 한국인력개발학회 2009 HRD연구 Vol.11 No.2
본 연구의 목적은 CIPP 평가모형을 활용하여 중소기업 훈련 컨소시엄 운영기관의 실태와 현황을 조사하는 것이다. CIPP 평가모형의 하위요소인 상황평가, 투입평가, 과정평가, 산출평가를 통해 중소기업 훈련 컨소시엄 운영기관의 실태를 구체적으로 분석하였다. 연구결과, 사업 운영기관들은 수요조사를 통해 훈련 프로그램을 개발하고 있으며 교·강사 운영, 교재개발 및 수정, 시설 및 장비 구비 등에 참여 기업들의 의견을 적극적으로 반영하고 있는 것으로 나타났다. 또한 지속적인 운영방법 개선을 통해 훈련 프로그램의 효과성과 만족도를 높이는 것으로 나타났다. 그러나 사업의 효과성과 효율성을 높이기 위해서는 투입과 산출에 대한 관계 파악과 사업화에 따른 경직적인 운영과정, 사업성과에 대한 지속적인 사후관리 등은 개선해야 할 과제로 나타났다. The purpose of the study was to examine the current status and outcomes of consortium training programs for small and middle-sized corporations in terms of the training institutions, using CIPP (Context-Input-Process-Product) evaluation model. We found that the operation institutions for managing the consortium training programs has analyzed the needs of corporations that participated and developed the training programs and manual, as well as tools. In addition, they improved the quality, satisfaction, and effectiveness of the programs. However, we suggested the operation institutions should improve the correlation between the input and output of the programs, a fixed program management, and follow-up outcomes of the programs.
초고층 주거용 건물에서 폐열회수형 환기시스템을 이용한 외기냉방 적용성 평가
성남철(Seong, Nam Chul),홍성민(Hong, Sung-Min),최성균(Choi, Sung-Kyun),윤동원(Yoon, Dong-Won),오석훈(Oh, Suk-Hoon) 한국건축친환경설비학회 2012 한국건축친환경설비학회 학술발표대회 논문집 Vol.2012 No.10
Outdoor Air Cooling offers a variety benefit as to decrease outdoor air loads and cooling energy consumptions. This study conduct in to establish outdoor air intake control strategy and to analyze cooling demand period in the high-rise residential buildings for evaluation of applicability of outdoor air cooling using the heat recovery ventilation system. As a result of simulation, approximately, applied outdoor air cooling control, cooling demand period decreases 12 percent during one year.