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- 저자 : 박현철(Hyun Cheul Park) (검색결과 7 건)
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제품기반의 공급자 선정 지원을 위한 다 기준 의사결정지원시스템 모델
이진우(Lee Jin-Woo),박현철(Park Hyun-Cheul) 한국전자상거래학회 2005 전자상거래학회지 Vol.6 No.3
공급자를 선정하는 논문은 많이 발표되었고 최근에도 다양한 방법론들이 발표되고 있으나 공급자 선정 기준에 대한 정량적 평가에 거의 의존하고 있다. 어떤 개인의 판단에 의해 결정되는 수치적 자료의 불명확하고 개인적인 편차가 많이 내포된 점들에 대해 개인의 편차나 불명확한 자료를 최대한 줄이면서 자료를 접근해 가는데 도움을 주는 방법론 접목이 필요하다고 본다.<BR> 따라서 본 논문에서는 개인의 의사결정 하는데 있어 편차를 줄일 수 있는 퍼지개념을 적용한 민감도 분석을 활용하여 최종 의사결정자가 여러 가지 대안에 대하여 다양한 기준에 대한 가중치를 고려하여 최적의 결정을 할 수 있도록 지원하는 의사결정지원시스템 모델을 제안하고 있다.<BR> 구체적인 평가를 위하여 제시하는 방법으로는 고객의 요구사항을 반영하는 부분과 기술적인 부분으로 구분하여 계층적 분석방법과 품질기능전개 기법을 활용하여 기준간에 대한 가중치를 구하는 방법을 제시하고 있으며 고객의 요구사항에 대하여 평가자의 편견 또는 편차를 줄이기 위하여 퍼지 개념을 도입하고 있다. 한편 기술적인 기준에 대하여는 정보의 불확실성의 개념이 많이 내포되어있어 이를 극복하는 방법으로 엔트로피 개념을 도입하여 활용하도록 제시하고 있다. 이러한 두 가지의 관점으로 자료의 정보를 취득하여 최종 선정 평가하는 방법론을 제시하고 있으며 최종적으로 의사결정자가 대안에 대한 결과가 만족하지 않을 경우 기준에 대한 가중치를 변경하여 최종 결과 값을 변화하게 하여 결론을 도출하도록 유도하는 민감도 분석도 가능하도록 제안하고 있다. The Electronic Commerce is now changing the way of doing business in various ways and trends. A product recommendation or selection and a supplier selection problem are complex problem in that a myriad of participants and products are involved in trading. The trading is various according to the situations of buyers and suppliers.<BR> This paper proposes a decision support system model for supplier selection based on a product-driven environments. The model is used a traditional methodologies, fuzzy concept, Analytical Hierarchy Process, quality function deployment and entropy. An example is used throughout the paper to illustrate the application of the proposed method. A sensitivity analysis can be performed to check the variant trends of the final decisions to minor changes in judgements.<BR> The limitation of the proposed method is that there is no proof of the adaptability to the real world. In further research, we will be addressing these point.
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최지호(Ji Ho Choi),문찬일(Chan Il Moon),김주현(Ju Hyun Kim),김필운(Pill Woon Kim),이승원(Seung Won Lee),정연실(Yon Sil Jung),양동경(Dong Kyung Yang),지현규(Hyeon Gyoo Ji),박현철(Hyun Cheul Park) 대한소화기학회 1997 대한소화기학회지 Vol.30 No.4
Gastric volvulus or torsion is a rare disease which is caused by a rotation of the stomach above 180. Clinical featres are abrupt abdominal pain at the acute state and indigestion at the chronic state associated with a closed loop obstruction. The diagnosis is confirmed by barium study and endoscopy with clinical features. Acute gastric volvulus is a surgical emergency but chronic volvulus in a 75 year. old man who complained of indigestion and early satiety. The stomach volvulus was diagnosed by gastrofiberscope and upper gastrointestinal barium study and it was treated by conservertive management. (Korean J Gastroenterol 1997; 30:537-540)
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이충열,박현철,박진철,김성만,김용철,최재희,최인수 밀양대학교 농업기술개발연구소 2000 農業技術開發硏究所報 Vol.4 No.1
The object of this study was to optimize PCR condition for RAPD analysis in adzuki bean. The best template DNA concentration was 20ng(0.25unit taq polymerase and 2.5mM MgCl2), 40ng(1unit taq polymerase and 2.5mM MgCl2, 1unit taq polymerase and 4.5mM MgCl2 and lunit taq polymerase and 7.0mM MgCl2), and 60ng(0.5unit taq polymerase and 2.5mM MgCl2, 0.5unit taq polymerase and 4.5mM MgCl2, 1unit taq polymerase and 2.5mM MgCl2, and 1unit taq polymerase and 4.5mM MgCl2) The best MgCl2 concentration was 2.5mM(40ng template DNA and 1unit taq polymerase, 60ng template DNA and 0.5unit taq polymerase, and 60ng template DNA and 1unit taq polymerase), 4.5mM(20ng template DNA and 0.25unit taq polymerase, 60ng template DNA and 0.5unit taq polymerase, and 60ng template DNA and 1unit taq polymerase), and 7.0mM(40ng template DNA and 1unit taq polymerase). Amount of taq polymerase was 0.25unit(20ng template DNA and 2.5mM MgCl2), 0.5unit(60ng template DNA and 2.5mM MgCl2, 60ng template DNA and 4.5mM MgCl2) and 1unit(40ng template DNA and 2.5mM MgCl2, 40ng template DNA and 4.5mM MgCl2, 40ng template DNA and 7.0mM MgCl2, 60ng template DNA and 2.5mM MgCl2, 60ng template DNA and 4.5mM MgCl2, and 60ng template DNA and 7.0mM MgCl2). When we consider results from template DNA concentration, MgCl2 concentration, and amount of taq polymerase, the best condition for PCR optimization was 60ng template DNA, 4.5mM MgCl2, and 1unit taq polymerase. Reaction temperatures for the optimal PCR condition were 84℃, 32℃, 62℃; 90℃, 40℃, 72℃; and 92℃, 36℃, 72℃.
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공현정,박진철,김성만,김용철,이충열,박현철,최인수 밀양대학교 농업기술개발연구소 2000 農業技術開發硏究所報 Vol.4 No.1
To optimize PCR condition is the most important and fundamental step for experiments using PCR. The purpose of this study was to optimize PCR condition for RAPD analysis in peach. 3×3×3 factorial experiment for template DNA concentration, MgCl2 concentration, and amount of taq polymerase was conducted. Another factorial experiment for denature, annealing, extension temperature on the optimal PCR condition was also conducted. The best template DNA concentration was 20ng(0.5unit taq polymerase and 2.5mM MgCl2), 40ng(0.5unit taq polymerase and 4.5mM MgCl2, and 1unit taq polymerase and 2.5mM MgCl2), and 60ng(0.5unit taq polymerase and 2.5mM MgCl2, 0.5unit taq polymerase and 4.5mM MgCl2, 1unit taq polymerase and 2.5mM MgCl2, 1unit taq polymerase and 4.5mM MgCl2, and 1unit taq polymerase and 7.0mM MgCl2). The best MgCl2 concentration was 2.5mM(40ng template DNA and 1unit taq polymerase, 60ng template DNA and 0.5unit taq polymerase, and 60ng template DNA and 1unit taq Folymerase), and 4.5mM(40ng template DNA and 0.5unit taq polymerase, 40ng template DNA and 1unit taq polymerase, 60ng template DNA and 0.5unit taq polymerase, and 60ng template DNA and 1unit taq polymerase), and 7.0mM (60ng template DNA and 1unit taq polymerase). The best taq polymerase concentration was 0.5unit(20ng template DNA and 2.5mM MgCl2, 40ng template DNA and 4.5mM MgCl2, 60ng template DNA and 2.5mM MgCl2, and 60ng template DNA and 4.5mM MgCl2), and 1unit(40ng template DNA and 2.5mM MgCl2, 60ng template DNA and 2.5mM MgCl2, 60ng template DNA and 4.5mM MgCl2, and 60ng template DNA and 7.0mM MgCl2). When we consider results from template DNA concentration, MgCl2 concentration, and amount of taq polymerase, 5 conditions(60ng of template DNA, 7.0mM MgCl2 and 1unit taq polymerase; 60ng of template DNA, 4.5mM MgCl2 and 1unit taq polymerase; 60ng of template DNA, 2.5mM MgCl2 and 0.5unit taq polymerase; 40ng of template DNA, 2.5mM MgCl2 and 1unit taq polymerase; and 40ng of template DNA, 4.5mM MgCl2 and 0.5unit taq polymerase;) were best combinations for the optimal PCR condition. Reaction temperatures for the optimal PCR condition were 90℃, 40℃, 72℃ and 92℃, 36℃, 72℃.
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최재희,박진철,김성만,김용철,이충열,박현철,최인수 밀양대학교 농업기술개발연구소 2000 農業技術開發硏究所報 Vol.4 No.1
Effects of photoperiod(23L or 24D) to the growth of the silkworn vegetable wasp and plant worm were investigated. Exposure of the fungi to 24L photoperiod for at least 3 days accelerated the formation of the spore, but the growth of the fruiting bodies was inhibited. On the contrary, 24D photoperiod inhibited the spore formation, but accelerated the growth of fruiting bodies. Accordingly to harvest high quality silkworm vegetable wasp and plant worm, it is suggested that recommendable light condition for production of longer fruiting bodies is 24D photoperiod during the cultivation.
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