• 한국경영과학회지
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• 제28권2호
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• pp.1-15
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• 2003

This paper presents a new evolutionary algorithm to solve complex multi-level integration problems, which is called multi-level symbiotic evolutionary algorithm (MEA). The MEA uses an efficient feedback mechanism to flow evolution information between and within levels, to enhance parallel search capability, and to improve convergence speed and population diversity. To show the MEA's applicability, It is applied to the integrated planning of production and distribution in supply chain management. The encoding and decoding methods are devised for the integrated problem. A set of experiments has been carried out, and the results are reported. The superiority of the algorithm's performance is demonstrated through experiments.

• 품질경영학회지
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• 제37권1호
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• pp.69-79
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• 2009

Supply Chain Management is the process of planning, implementing and controlling the operations of the supply chain to satisfy customer requirements as efficiently as possible. It spans all movements and storage of raw materials, work-in-process inventory, and finished goods from point-of-origin to point-of-consumption. Korean Standards Association claims the Supply Chain Quality Management(SCQM) as a win-win model of organizations among the supply chains for the best product/service quality to final customers. The SCQM is focused on quality of product/service and will do much for improving manufacturing performance between customer and suppliers. Consulting-teams make every effort to design suitable solution for constructing solutions and improving the performance. This study is to analyze the performance of SCQM consulting, from July of 2007 to June of 2008, and would provide some guidelines to design the optimal consulting models and develop guidebooks.

• 한국전자거래학회지
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• 제9권1호
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• pp.105-122
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• 2004

정보기술의 발전은 비즈니스 환경을 변화시켜왔고, 이러한 변화는 공급사슬 내의 거래 당사자들 간의 비즈니스프로세스 변화에도 영향을 주었다. 이러한 변화에 대한 최근의 경향은 파트너들 간의 긴밀한 유대관계를 강조하고 있다. 하지만 이는 정보를 교환하거나 의사결정을 내리는 데에 있어 업무 담당자의 참여를 필요로 하여 의사소통의 시간적 단절을 유발하고, 실시간 내의 정보수집 및 의사결정을 불가능하게 만드는 문제를 안고 있다. 이러한 문제를 해 결하기 위해, 거래 기업간의 응용 프로그램의 자동 의사소통을 바탕으로 한 자동통합이라는 새로운 개념이 도입되고 있으며, 이러한 개념은 미래형 공급사슬 환경의 방향이 될 것이다. 본 연구에서는 자동 통합 환경과 이 환경 하에서의 공급사슬계획을 위한 비즈니스 프로세스 모델을 소개하고, 이러한 공급사슬계획의 효율적인 수립을 위하여 협상과정을 분석하여 협상 패턴을 제시하였으며, 제시된 협상 패턴을 비즈니스 시나리오에 통합시킴으로써 통합된 공급사슬계획에서 협상을 위한 비즈니스 프로세스 모델을 제시하였다.

• International Journal of Naval Architecture and Ocean Engineering
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• 제10권6호
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• pp.741-761
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• 2018

A shipyard is an Engineer To Order (ETO) company that designs and manufactures new products when orders are placed. Various tasks are concurrently performed, thereby making process management considerably important. It is particularly important to plan and control production activities because production constitutes the largest part of the overall process. Therefore, this study focuses on the development of a production planning system based on an Advanced Planning System (APS). An APS is an integrated planning system that targets supply chain processes in accordance with the principles of hierarchical planning. In this study, a Supply Chain Planning Matrix (SCP-Matrix), which is used as a guideline for APS development, is designed through analysis of shipyard cases. Then, we define the process in detail, starting from long-term production plan as the initial application, and design and implement a long-term production planning system using a component-based development.

• 한국시뮬레이션학회논문지
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• 제12권1호
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• pp.35-48
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• 2003

This paper suggests the long-term strategy of the production distribution planning considering the capacity of factory production and the uncertain demand in a supply chain. This paper determines the near optimal capacity of factory production by using the advantages of mathematical and simulation models. Also, the relationship between the capacity from the suggested model and the strategy of production and distribution in a supply chain is studied. Arena is used for modeling and analysis.

• 한국시뮬레이션학회논문지
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• 제12권4호
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• pp.1-15
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• 2003

To satisfy and respond quickly to customers' demand, many companies are now aggressively focusing on supply chain management in order to strengthen their competitiveness. The modeling and analysis of supply chain environment have been widely studied. This study is concerned with the development of supply chain simulator which deals with stochastic natures existing in the supply chain environment. We proposed the mathematical model for the efficient cost analysis and developed the supply chain simulator based on the proposed mathematical model with object-oriented language C++. The simple experiment which find the best combination of policies considering the whole cost shows the possibility and reasonability of the developed simulator.

• Industrial Engineering and Management Systems
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• 제12권2호
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• pp.103-111
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• 2013

This paper discusses how to manage supply chain disruption risks from natural disasters or other low-likelihood-high-impact risk drivers. After the catastrophic earthquake in Eastern Japan and the severe flood in Thailand, most companies have been attempting to re-establish the business continuity plan to prevent their supply chain from disruption. However, the challenges for managers and individual risks are often interrelated, and thus, actions that mitigate one risk can end up being no contribution as a whole. In this paper, we describe a framework for assessing how much impact individual mitigation strategies have on the entire supply chain protection against disruption, using network reliability. We propose three categories of risk-mitigation approaches: Stabilization, Absorption, and Duplication. We analyze the situation under which each of these strategies is the best suitable. With a clear understanding of relations between these mitigation strategies and the entire supply chain risks, managers can select effective risk-reduction approaches to their supply chain.

• 한국전자거래학회지
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• 제19권1호
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• pp.43-61
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• 2014

본 연구는 공급망 운영에서 가장 기본적이고 필수적인 연구 분야인 공급자의 선정과 수요의 할당 문제를 해결하기 위한 방법으로 게임이론을 적용하였다. 특히, 가장 보편적으로 사용되고 있는 점진적 역경매 메커니즘을 비율적 형평성을 보장하는 구매 게임 방식과 공급망 전체 운영의 수익성이라는 관점에서 비교 분석하였다. 서로 다른 두 메커니즘의 정교한 비교 분석을 위한 전체 알고리즘을 제시하였으며, 구매게임을 이용한 공급자 선정 및 주문 배분의 최적해는 유전자 알고리즘을 통해 도출하였다. 전체 공급망의 수익성은 공급자와 구매자의 수익함수와 수익-비용 비율을 통해 평가하였다. 실제 현실의 공급망을 단순화한 모형을 바탕으로 본 연구에서 제안하는 방법이 전체 공급망의 수익성을 어떻게 향상시킬 수 있는 지를 간단한 실험과 통계 분석을 통해 설명하였다. 이를 통해 구매게임의 해가 역경매 방식에 비해 구매자의 수익성 감소를 통해 공급자와 구매자를 모두 포함하는 공급망 전체의 수익성을 크게 향상시킬 수 있음을 보였다.

• 산업공학
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• 제17권spc호
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• pp.79-89
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• 2004

Supply Chain (SC) can balance demands with supply activities as executing Supply Chain Planning (SCP). The fluctuated demands, however, will break the balance between demand and supply. It means that the present SCP is useless in responding the changed demands. Thus it is necessary for SCP to be updated with changed demands. We call this procedure as Supply Chain Replanning. However, the existing measures for SC can not deal with the balance between supply and demand so that they can not detect effectively the timing of replanning. For this reason, a new performance measure, Balancing Point, is developed using momentum, a concept of Physics. It can treat the balance between supply and demand. Also, a replanning method based on Balancing Point is proposed. The proposed method is more effective than the existing replanning method, periodic replanning method and net inventory method.

• 한국경영과학회:학술대회논문집
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• 한국경영과학회 2001년도 추계학술대회 논문집
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• pp.269-272
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• 2001

In this paper, we presents a systematic methodology for minimizing tardiness and maximizing resource utilization in a multi-plant supply chain. A methodology is represented to a multi-objective mathematical program model. The model offers flexible and efficient multi-plant planning and scheduling. Also, We develope a realistic and flexible planning model using the genetic algorithm to solve the model.