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한종선,이현규 조선대학교 생산기술연구소 2005 生産技術硏究 Vol.27 No.1
In the present work, dispersion morphology of particulate of Al-5%Ti-10%㎎+ N₂ composite materials prepared by casting has been studied by using optical microscope, SEM and EDAX. An attempt has been Carried out to understand the dispersion behavior and interfiacial reaction of nitride particles (TiN, AIN) in aluminum alloy melt after homogenization treatment. Al and Ti form intermetallic compounds preferably near nitride particles and tend to be distributed uniformly in matrix with the content of nitride dispersoids. Microstructural analysis of as-cast composites shows that most of nitride dispersoids are observed at grain boundary. but a parts of them are distributed inside the grain.
보관용량이 한정된 상황하의 한 종류 아이템 배송에 관한 롯사이징 문제의 정의 및 주요해법
한종선,황학진 조선대학교 생산기술연구소 2007 生産技術硏究 Vol.29 No.2
We consider a dynamic lot-sizing problem for delivery of a single item under the situation that storage capacity is limited. We first formulate the problem and provide an optimality property. For this problem, a main dynamic programming procedure is proposed, which utilizes the zero inventory policy.
NFPA 미국방식과 국내 발전기용량 계산 산정방법 비교 분석 연구
한종선,김래영 한국조명.전기설비학회 2024 조명·전기설비학회논문지 Vol.38 No.2
In this study, the methods for calculating generator capacity currently applied in Korea and the United States were reviewed, and the differences in the calculation methods were examined. Furthermore, two completed buildings were selected for actual verification through calculation and comparative review. The results showed that there was no significant difference in the methods for calculating generator capacity, but the capacity was calculated to be 10-20% larger depending on the characteristics of the building and the type of load. It was found that the NFPA standards apply more specific and detailed baseline data and various constants (such as the method of applying the full-load current for different motor capacities during startup / operation, startup factor, etc.). However, the KDS 31 60 20 method offers a wide range of choices in selecting baseline data (voltage drop of the generator, startup factor by type of startup, harmonic content rate, etc.), resulting in different applications by designers even for the same motor capacity. This area requires focused improvement and legal revision in the future, along with the need to provide specific values for load characteristics and various factors.