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체계적인 문제해결을 위한 QC도구의 활용 방안에 관한 연구
윤태홍(Tae-Hong Yun),김창열(Chang-Yeol Kim),변재현(Jai-Hyun Byun) 한국경영과학회 2008 한국경영과학회 학술대회논문집 Vol.2008 No.5
There are many quality control(QC) tools useful for solving quality problems. In this paper, we suggest problem-solving procedures to systematically deal with various quality problems. These procedures will help quality practitioners to solve field quality problems.
체계적인 문제해결을 위한 QC도구의 활용 방안에 관한 연구
윤태홍(Tae-Hong Yun),김창열(Chang-Yeol Kim),변재현(Jai-Hyun Byun) 대한산업공학회 2008 대한산업공학회 춘계학술대회논문집 Vol.2008 No.5
There are many quality control(QC) tools useful for solving quality problems. In this paper, we suggest problem-solving procedures to systematically deal with various quality problems. These procedures will help quality practitioners to solve field quality problems.
윤태홍 ( Tae Hong Yun ),변재현 ( Jai Hyun Byun ) 한국품질경영학회 2012 품질경영학회지 Vol.40 No.4
Purpose: In this paper we propose modified Notz designs which are useful to experimenters who want to adopt the sequential experimentation strategy and to estimate second-order regression model with as few experimental points as possible. Methods: We first present the design matrices and design points in two or three dimensional spaces for such small sized second-order designs as small composite hybrid and Notz designs. Modified Notz designs are proposed and compared with some response surface designs in terms of the total number of experimental points the estimation capability criteria such as D- and A-optimality. Results: When sequential experimentation is necessary the modified Notz designs are recommendable. Conclusion: The result of this paper will be beneficial to experimenters who need to do experiments more efficiently especially for those who want to reduce the time of experimentation as much as possible to develop cutting-edge products.
신병철 ( Byung-cheol Shin ),변재현 ( Jai-hyun Byun ),윤태홍 ( Tae Hong Yun ) 한국품질경영학회 2021 품질경영학회지 Vol.49 No.1
Purpose: A noncentral composite design method is to be developed to explore farther region for the first factorial design. A general guideline for sequential experimentation is provided. Methods: (1) A non-overlapping noncentral composite design (NNCD) is developed, in which the second factorial design shares one design point that indicates the best response value in the first factorial design. (2) Four composite designs are compared in terms of the four design evaluation criteria, which are D-, A, G, and I-optimality. (3) A follow-up design strategy is suggested based on the interaction effect, direction of improvement, number of factors. Results: (1) NNCD and model building method are presented, which is useful for exploring farther region from first factorial design block. (2) The performances of the four composite designs are compared. (3) A follow-up design strategy is suggested. Conclusion: (1) NNCD will be useful to explore farther region for the first factorial design. (2) A follow-up design strategy can be beneficial to the experimental practitioners for product and process design and improvement.