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윤덕균,Yun Deok-Gyun 한국국방경영분석학회 1985 한국국방경영분석학회지 Vol.11 No.2
This paper presents a multi-costraint optimization model for redundant system reliability. The optimization model is usually formulated as a nonlinear integer programming (NIP) problem. This paper reformulates the NIP problem into a linear integer programming (LIP) problem. Then an efficient 'Branch and Straddle' algorithm is proposed to solve the LIP problem. The efficiency of this algorithm stems from the simultaneous handling of multiple variables, unlike in ordinary branch and bound algorithms. A numerical example is given to illustrate this algorithm.
최적불량률(最適不良率)과 계량여유량(計量餘裕量)의 결정(決定)에 관한 연구(硏究)
윤덕균,이남식,Yun, Deok-Gyun,Lee, Nam-Sik 한국품질경영학회 1981 품질경영학회지 Vol.9 No.2
Products are assumed to be spoiled and not recoverable when the raw material below the prescribed weight level is charged in the mold. The raw material is autoscaled and their weight is normally distributed with a given variance. This paper describes an appropriate stochastic model of determining the optimum weight allowance and the associated defective rate for auto scale system. The optimum weight allowance and the defective rate which minimizes the total loss of defective and the excess weight allowance is obtained. A numerical example for the existing rubber company is also presented and evaluated.
윤덕균,강현순,Yun Deok-Gyun,Gang Hyeon-Sun 한국국방경영분석학회 1986 한국국방경영분석학회지 Vol.12 No.2
This paper is concerned with a standard size system and production proportion of combat boots. For the standard size system foot sizes of 327 soldiers were mesured by Martin type anthropometric equipment. 24 foot measurements were obtained on all individuals. The standard size system of which key measurements are foot length and joint girth are proposed on the basis of the statistically treated measurement data. The production (or purchasing) proportion of the proposed size system of combat boots are also proposed.
일본 초고령사회의 산업구조 변화과정 분석을 통한 한국 산업구조 예측
안세환(Se-Hwan Ahn),윤덕균(Deok-Kyun Yun),김성도(Sung-Do Kim),박우균(Woo-Gyun Park) 한국산업경제학회 2012 산업경제연구 Vol.25 No.3
일본을 비롯한 많은 선진국들이 고령사회에 진입하였고, 산업측면에서 많은 변화와 준비가 있었다. 그 중에서도 일본은 세계에서 가장 먼저 초고령 사회에 진입하였으며, 역사적으로 고령인구의 증가속도와 산업의 발전과정, 정부 정책 등을 볼 때, 한국과 가장 유사하게 변화하여 왔다. 따라서 일본은 한국 산업의 미래를 전망함에 있어서 가장 좋은 예측모델이라 할 수 있다. 이에 본 연구에서는 이러한 한국과 일본의 산업구조간의 상관관계를 바탕으로 고령사회 및 초고령 사회에 닥쳐올 한국 산업의 구조를 예측 하고자 하였으며 이를 위해 한국의 과거데이터를 이용한 기존방식의 미래예측이 아닌 일본과 한국의 산업 유사성에 근거하여 일본의 데이터를 가지고 한국의 산업구조를 예측하고자 하였다. 이를 위해 고령화 비율이라는 독립변수를 사용하고 한국과 일본의 산업 간 유사성과 고령화 정도를 바탕으로 한국 산업구조를 예측하고자 하였다. 이러한 본 연구의 결과는 일본의 초고령 사회로 인한 산업의 변화를 토대로 한국의 산업구조를 예측함으로써 향후 겪게 될 한국의 고령 및 초고령 사회에 대비한 중요한 시사점을 도출 할 수 있을 것으로 본다. The lots of advanced countries, including the Japan entered into aged society and there were industrially lots of preparations and alterations. Japan was the first to enter into the super-aged society among these countries. According to pace of aging population growth, a process of development of industry and government policy, it has been changed most similar to Korea. Therefore, Japan is the best forecasting model to predict the future of Korean industry. In this study, we predict structure of Korean industry which is based on the correlation between Korean and Japanese industrial structure at the aged society and super-aged society. To achieve this, we predict structure of Korean industry not by using Korean historical data but by using similarity of industry between Korea and Japan. We use independent variable named aging index(aged 65 and over) to predict structure of Korean industry based on not only similarity of industry between Korea and Japan also aging degree. The result of this study can draw important implications for aged society and super-aged society of Korea by predicting structure of Korean industry as the foundation of alteration of industry caused by super-aged society of Japan.
이석훈(Seok-Hoon Lee),윤덕균(Deok-Gyun Yun) 한국산업경영시스템학회 2004 한국산업경영시스템학회지 Vol.27 No.3
In this paper the authors presents a new method, named FR-SER VQUAL, of evaluating perceived service quality in Public Sectors, using triangle fuzzy numbers and semantic differential scale. By conventional quantification methods, it is not easy to express the notion of a linguistic variables and customers' subjective judgements. In contrast to the conventional PZB methods which express the customers' perception of quality as a function of gap between the expected and perceived service, this paper suggests to use the ratio of the two. Through an application example, this paper shows that the current FR-SERVQUAL approach provides a more realistic way of measuring service quality compared to existing methods.
AHP를 이용한 6시그마 프로젝트의 위험요인에 대한 중요도 평가
김성도 ( Sung Do Kim ),박우균 ( Woo Gyun Park ),이용복 ( Yong Bok Lee ),윤덕균 ( Deok Kyun Yun ) 한국경영공학회 2013 한국경영공학회지 Vol.18 No.1
The Six-sigma management is enterprise-wide innovation movement which includes company, customer, process and knowledge. It is necessary to analyze not only success factors also failure factors of Six-sigma to maintain sustainability and to contribute business performance for Six-sigma management. The analysis about success factors and failure factors of Six-sigma is as important as deciding business performance. On the domestic side, there are lots of empirical researches about success factors of Six-sigma how much influence to business performance. And the researches about success factors are being studied actively. But researches of risk factors and failure factors of Six-sigma are insufficient. The Six-sigma project has the ultimate object to remove failure factors beforehand and to contribute business performance. To achieve this, we analyzed KORAIL which starts Six-sigma for the first time from among Korean public enterprises. Through this analysis, we drew risk factors and failure factors which directly influence to Six-sigma project. And we prioritized the formulated factors. As a result, 8 fields and 14 factors have been drawn by stepwise regression and we prioritized the rick factors and failure factors by AHP(Analytic Hierarchy Process). With this, company can effectively manage risk factors and carry out Six-sigma projects. Furthermore, we expect it will contribute business performance.
퍼지수를 이용한 공공부문의 서비스 품질 속성분석에 관한 연구
이석훈(Seok-Hoon Lee),김용필(Yong-Pil Kim),윤덕균(Deok-Gyun Yun) 한국산업경영시스템학회 2004 한국산업경영시스템학회지 Vol.27 No.4
This paper proposed a new method to evaluate service quality attribute of perceived service quality in public sectors, using triangle fuzzy numbers and hamming distance Our method measured the ratio of the expected and perceived service for the customers' perceived service quality. By using fuzzy numbers, This method not only overcomes linguistic variable problems but also provides more objective and direct information for service quality attributes The discrepancy rate be-tween expected service and perceived service that is perceived service quality IS evaluated by hamming distance To eval-uate the discrepancy rate from hamming distance, we induced general solutions to compute the intersection area between two triangle fuzzy numbers and the weak or strong attributes in public sectors are clarified
김용필(Yong-Pil Kim),조장운(Jang-Woon Cho),윤덕균(Deok-Gyun Yun) 한국산업경영시스템학회 2004 한국산업경영시스템학회지 Vol.27 No.1
Systems are often operated by not integration but blocking, i.e., non-standardization. The system blocking is mainly caused by non-standardization or incompatibility. The integrated system is effective, but researches for quantification of effectiveness from integrating system are few. System blocking causes additional cost which is almost intangible and potential. In this paper we proposed a model to quantify the effectiveness of system integration. To verify the validity of proposed model, we applied the model for Korean information and communication industry and forecasted the cost of integration for South and North Korean telecommunication industry in the way of three scenarios.