• 제목/요약/키워드: Sang-Seol Lee

검색결과 339건 처리시간 0.031초

다속성 효용이론을 이용한 신규 수요관리 투자사업 선정평가 모델 개발 (Development on the Assessment Model for Selection of New DSM Investment Programs using MAUT)

  • 박상용;이덕기;이정태;이상설
    • 대한설비공학회:학술대회논문집
    • /
    • 대한설비공학회 2008년도 하계학술발표대회 논문집
    • /
    • pp.231-236
    • /
    • 2008

  • The purpose of this study is to develop assessment model for selection of new DSM investment programs. In this research, MAUT method which find assessment value by each attributes related to selecting new DSM investment programs using utility function and integrate with structural frame was used to develop assessment model. In order to validate the usefulness of the model, assessment model was applied for actual candidate group of new DSM investment programs in natural gas domain. By utilize this assessment model to select new DSM investment programs, it is expected to minimize risk of new program launching and to maximize efficiency of DSM investment programs.

  • PDF

고로슬래그 치환율에 따른 폐자기 인조석재의 역학적 특성 (Dynamic Properties of Artificial Stone with Waste Porcelain according to the ratio of Blast Furnace Slag)

  • 설동근;이상수;송하영
    • 한국건축시공학회:학술대회논문집
    • /
    • 한국건축시공학회 2015년도 추계 학술논문 발표대회
    • /
    • pp.15-16
    • /
    • 2015

  • Natural stone causes environmental pollution when it is collected and processed. Also, it is hard to make consistent products. Therefore, this study focuses on the artificial stone with waste porcelain to replace natural stone. The flexural strength and compressive strength are lower according to the replacement ratio of blast furnace slag in the result of experiment.

  • PDF

Parametric Inverse Scattering for Lossless Dispersive Media with Enhanced Robustness

  • Park, Hyoung-Jin;Lee, Sang-Seol
    • Journal of electromagnetic engineering and science
    • /
    • 제3권1호
    • /
    • pp.57-61
    • /
    • 2003

  • The effects of high frequency noises on a perturbational inversion technique for a stratified dispersive medium are investigated in this paper. It is shown that the perturbational solution becomes unstable under high frequency noises. The physical origin of this instability is described. In order to enhance the robustness of the perturbational inverse scattering solution, a parametric inversion technique is introduced. The examples for the 2-pole and the 3-pole reflection coefficients are compared and contrasted, and improvement of the robustness of the solutions is shown.

  • PDF KSCI