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배봉수 ( Bae Bong-soo ),서순근 ( Seo Sun-keun ) 한국경영공학회 2017 한국경영공학회지 Vol.22 No.3
Three-point time estimates in Program Evaluation and Review Technique (PERT) is widely accepted as a popular estimation method in project management and financial risk analysis because of simple structure and fairly accurate estimation. The classical PERT framework for computing mean and variance using three-point estimation formula based on beta distribution is only confined to three combinations of two beta shape parameters. Hence three beta-PERT distributions to satisfy two assumptions in three ones of PERT framework are discussed and compared in terms of flexibility of distribution, robustness, and usefulness. In this paper, new beta-PERT distribution is recommended and also demonstrated how practitioners could use this distribution in actual risk analysis of engineering projects.
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배봉수(Bong-Soo Bae),서순근(Sun-Keun Seo) 한국신뢰성학회 2017 신뢰성응용연구 Vol.17 No.2
Purpose: The most previous works on designing accelerated life tests (ALTs) are focused on the application of a single stress. Because of the difficulty to obtain the sufficient information in a reasonable duration using single stress only, there is needed in practice to use multiple-stress ALTs frequently. This paper presents new practical plans with two stresses for Weibull distribution. Methods: The four-level practical plans based on rectangle test region are proposed and compared with the corresponding three-level statistically optimal plans. Sensitivity analyses for assumed design parameters and life-stress relationship are conducted. Results: A procedure to choose practical ALT plans is illustrated with a numerical example and guidelines for planning two-stress ALTs are provided. Conclusion: The proposed two-stress ALT plans on practical constraints to assess a quantile of Weibull lifetime distribution at the use condition are efficient and robust.
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베타-이항모형을 이용한 과산포 공정용 р 관리도의 개발
배봉수 ( Bae Bong-soo ),서순근 ( Seo Sun-keun ) 한국품질경영학회 2017 품질경영학회지 Vol.45 No.2
Purpose: Since traditional р chart is unable to deal with the variation of attribute data, this paper proposes a new attribute control chart for nonconforming proportions incorporating overdispersion with a beta-binomial model. Methods: Statistical theories for control chart developed under the beta-binomial model and a new approach using this control chart are presented Results: False alarm probabilities of р chart with the beta-binomial model are evaluated and demerits of р chart under overdispersion are discussed from three examples. Hence a concrete procedure for the proposed control chart is provided and illustrated with examples Conclusion: The proposed chart is more useful than traditional р chart, individual chart to treat observed proportions nonconforming as variable data and Laney р′ chart.
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생성형 거대언어모델의 의학 적용 현황과 방향 - 동아시아 의학을 중심으로 -
강봉수,이상연,배효진,김창업 한의병리학회 2024 동의생리병리학회지 Vol.38 No.2
The rapid advancement of generative large language models has revolutionized various real-life domains, emphasizing the importance of exploring their applications in healthcare. This study aims to examine how generative large language models are implemented in the medical domain, with the specific objective of searching for the possibility and potential of integration between generative large language models and East Asian medicine. Through a comprehensive current state analysis, we identified limitations in the deployment of generative large language models within East Asian medicine and proposed directions for future research. Our findings highlight the essential need for accumulating and generating structured data to improve the capabilities of generative large language models in East Asian medicine. Additionally, we tackle the issue of hallucination and the necessity for a robust model evaluation framework. Despite these challenges, the application of generative large language models in East Asian medicine has demonstrated promising results. Techniques such as model augmentation, multimodal structures, and knowledge distillation have the potential to significantly enhance accuracy, efficiency, and accessibility. In conclusion, we expect generative large language models to play a pivotal role in facilitating precise diagnostics, personalized treatment in clinical fields, and fostering innovation in education and research within East Asian medicine.
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서순근,김갑석,배봉수 동아대학교 공과대학부설 생산기술연구소 1996 生産技術硏究所硏究論文集 Vol.1 No.2
The assumptions of period checking policy for On-Line Quality Control presented by Taguchi are examined and his loss function and formulae are evaluated by simulation. New iterative procedures are proposed under Taguchi's loss and improved loss functions, respectively. Computational experiments are conducted for various combinations of parameter values and their results are discussed. Sensitivity analysis for assumption of random walk model is also illustrated with an example.
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