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이남호(Namho Lee),정현규(Hyunkyu Jung),정승호(Seungho Jung) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.4
반도체에 이온화 방사선을 조사시키면 소자내부에서 전자-전공쌍(Electron-Hole Pair, EHP) 생성현상이 나타난다. 이 발성 전하는 방사선원에 따라 반영구적인 전원으로 활용이 가능하다. 본 논문에서는 반감기가 100여년인 Ni-63 베타 방사성 동위원소와 PN 접합형 반도체 소자를 사용한 방사선 전지를 개발하기 위한 연구의 일환으로 효율적인 방사광 변환법과 전류 발생방법 및 전지회로 구현에 대해서 고찰하였다. 또한 Ni-63 방사선의 베타선 스펙트럼을 계산하고 이에 해당하는 광입력 특성에 대한 실리콘 PN 접합 다이오드의 반응특성을 태양광 시뮬레이션용 소프트웨어를 사용하여 검증하였다.
기업용 S/W 판매전략 공유를 위한 인지지도 기반의 암묵지 관리 접근법
정남호(Namho Chung),이남호(Namho Lee),이건창(Kun Chang Lee) 한국경영과학회 2007 韓國經營科學會誌 Vol.32 No.4
Dramatic development of information technology requires new type of sales strategy to enterprise S/W dealers. That is, one should thoroughly consider diversified types of enterprise S/W and more elaborated consumer needs to establish successful sales strategy. However, various factors that should be considered in establishing enterprise S/W sales strategy are different according to types of enterprise S/W and hard to be managed systematically which led to the current situation where they have not been discussed enough. Therefore, this study introduced the relationship between the factors that affect selection of enterprise S/W using the concept of cognitive map on various enterprise S/W sales cases. Through this process, this study grouped the cognitive maps of similar cases to introduce their characteristics and made this result to be practically useful to enterprise S/W sales strategy.
유전자 알고리즘을 이용한 퍼지인식도 생성 메커니즘의 의사결정 효과성에 관한 실증연구
정남호(Namho Chung),이남호(Namho Lee),이건창(Kun Chang Lee) 한국경영과학회 2007 經營 科學 Vol.24 No.2
Fuzzy cognitive map (FCM) has long been used as an effective way of constructing the human's decision making process explicitly. By taking advantage of this feature, FCM has been extensively used in providing what-if solutions to a wide variety of business decision making problems. In contrast, the goal-seeking analysis mechanism by using the FCM is rarely observed in literature, which remains a research void in the fields of FCM. In this sense, this study proposes a new type of the FCM-based goal-seeking analysis which is based on utilizing the genetic algorithm. Its main recipe lies in the fact that the what-if analysis as well as goal-seeking analysis are enabled very effectively by incorporating the genetic algorithm into the FCM-driven inference process. To prove the empirical validity of the proposed approach, valid questionnaires were gathered from a number of experts on software sales, and analyzed statistically. Results showed that the proposed approach is robust and significant.