Green Supply Chain Network Model: Genetic Algorithm Approach

윤영수,추룬수크 아누다리,Yun, Young Su,Chuluunsukh, Anudari Korea Society of Industrial Information Systems 2019 한국산업정보학회논문지 Vol.24 No.3

본 연구에서는 그린공급망(green supply chain: gSC) 네트워크 모델이 제안된다. 제안된 gSC 네트워크 모델은 환경적 요인 및 경제적 요인을 고려한다. 환경적 요인으로는 부품 및 제품 수송 과정에서 발생하는 CO2 발생량의 총비용 최소화를 고려하며, 경제적 요인으로는 부품 및 제품 생산처리에 필요한 처리비용, 수송과정에서 발생하는 수송비용, 각 단계에서 고려되는 설비들의 개설을 위한 개설비용의 최소화를 고려한다. 수리모형에서는 환경적 요인 및 경제적 요인을 위해 고려되는 다양한 비용들의 총합의 최소화를 목적함수로 사용하며, 각 단계 간 수송량의 제약 등 다양한 제약조건을 함께 고려한다. 제안된 수리모형의 이행을 위해 유전알고리즘(Genetic algorithm: GA) 접근법을 사용한다. 수치실험에서는 네 가지 규모의 gSC 네트워크 모델을 제시하고, 이를 다양한 수행도 척도들을 사용하여 GA 접근법을 통해 해결하였다. 실험결과는 제안된 gSC 네트워크 모델과 GA 접근법의 우수성을 입증하였다. In this paper, we design a green supply chain (gSC) network model. For constructing the gSC network model, environmental and economic factors are taken into consideration in it. Environmental factor is to minimize the $CO_2$ emission amount emitted when transporting products or materials between each stage. For economic factor, the total cost which is composed of total transportation cost, total handling cost and total fixed cost is minimized. To minimize the environmental and economic factors simultaneously, a mathematical formulation is proposed and it is implemented in a genetic algorithm (GA) approach. In numerical experiment, some scales of the gSC network model is presented and its performance is analyzed using the GA approach. Finally, the efficiencies of the gSC network model and the GA approach are proved.

Hybrid Genetic Algorithm Reinforced by Fuzzy Logic Controller

Young-Su Yun(윤영수) 대한산업공학회 2002 대한산업공학회지 Vol.28 No.1

화재로 인한 화학사고 후 수행한 건강영향조사 사례

윤영수(Young-Su Yun),안연순(Yeon-Soon Ahn),고순정(Soon-Jeong Koh),이정하(Jeong-Ha Lee) 환경독성보건학회 2019 한국독성학회 심포지움 및 학술발표회 Vol.2019 No.4

Urokinase를 이용한 혈전 용해술로 치유된 양안 상안정맥 폐쇄 1예

윤영수(Young Su Yun),최현정(Hyun Jung Choi),이병희(Byung Hee Lee) 대한안과학회 1999 대한안과학회지 Vol.40 No.8

다기준의사결정도구를 이용한 최적입지선정

윤영수(Young-Su YUN) 조선대학교 지식경영연구원 2009 기업과 혁신연구 Vol.2 No.2

본 연구는 최적의 입지선정에 관한 연구로서 후보 입지들 간의 다양한 수행도를 비교 분석하였다. 수행도 비교를 위해 다기준 의사결정도구인 브레인스토밍법과 계층적분석과정(Analytic Hierarchy Process)을 이용하였으며, 실제 조선소에서 다년간 경험이 있는 실무자를 대상으로 평가대안, 평가항목 및 세부평가항목에 대한 다양한 설문조사를 진행하였다. 설문결과는 AHP의 쌍대비교 분석과정에 의해 수치화되고 분석되었으며, 이를 통해 최적의 평가대안을 선정하였다. In this paper, optimal location selection problem by various performance comparisons is considered. For the performance comparisons, brain-storming and analytic hierarchy process (AHP) methods are used for multi-criterion decision tools. Various alternatives and attributes for optimal location selection problem are developed by questionnaire and then adopted to brain-storming and AHP methods. Pairwise comparison of AHP is used to the alternatives and attributes. Finally, an alternative is selected for optimal location.

역물류 네트워크를 이용한 지방자치단체생활폐기물 운영효율화 방안

윤영수(Young Su Yun),아누다리 추룬수크(Chuluunsukh Anudari) 한국무역연구원 2014 무역연구 Vol.10 No.6

In this paper, we propose an efficient methodology of daily waste collection at a local autonomous entity using reverse logistics (RL) network. Currently, five district offices (Dong-gu, Nam-gu, Buk-gu, Seo-gu, Gwangsan-gu) at the local autonomous entity are treating their daily wastes by using a RL network. However, the current practice reflected inefficiency of network operation and the necessity of integration of each RL network. Therefore, we propose a revised method through a mathematical model for improving efficiency and integration. In conducting the case study, various real-life data for comparing each method were used. Various analyses and comparisons including sensitivity analysis were performed. Finally, we prove that our proposed method is more efficient than the current method.

Integrated Forward/Reverse Logistics Network Model using Hybrid Genetic Algorithm

Young-Su Yun(윤영수) 한국SCM학회 2018 한국SCM학회지 Vol.18 No.1

In this paper, we propose an integrated design of forward and reverse logistics (ID-FRL) network model. The proposed ID-FRL network model is an integrated model using forward and reverse logistics in supply chain management. Various facilities, e.g., suppliers, manufacturers, distribution centers, retailers, customers, collection centers, recovery centers, secondary markets, and waste disposal centers, are considered when constructing the proposed ID-FRL network model. Mixed-integer nonlinear programming is formulated for solving the proposed ID-FRL network model. It is implemented in a hybrid genetic algorithm (pro-HGA) approach combining genetic algorithm and modified cuckoo search approach. For experimental comparisons, various instances of the proposed ID-FRL network model are presented. They are solved using the pro-HGA approach and several conventional approaches, including Lingo as a benchmark. The computational results of each approach are compared with each other using various performance measures. Finally, this study proves that the pro-HGA approach outperforms the competing conventional approaches.

단일 및 복수단계 역물류 네트워크 비교

윤영수(Young-Su Yun) 한국무역연구원 2014 무역연구 Vol.10 No.2

In this paper we develop two types of reverse logistics (RL) networks: single stage reverse logistics network (ssRL) and multiple stage reverse logistics network (msRL). The ssRL considers the RL network flow of customer -> integration center -> secondary market and the msRL considers the RL network flow of customer -> collection center -> remanufacturing center -> redistribution center -> secondary market. In the ssRL, the integration center simultaneously takes the functions of the collection center, remanufacturing center, and redistribution center considered in the msRL. The ssRL and the msRL are formulated using a mixed integer programming (MIP) model and the MIP model is implemented in genetic algorithm (GA) approach. In a numerical experiment, types I and 2 with various flows of RL network are presented and they are programmed using the GA approach. Various measures of performance such as CPU time, optimal solution, and optimal setting are considered to compare the efficiency of the ssRL and the msRL. Finally, the performance of the ssRL is more efficient in terms of the CPU time and optimal solution than that of the msRL.

Adaptive Genetic Local Search Algorithms for System Reliability Optimization

윤영수 ( Young Su Yun ),서승록 ( Seung Lock Seo ) 대한설비관리학회 2004 대한설비관리학회지 Vol.9 No.1

N/A This paper proposes an adaptive genetic local search (aGLS) algorithm for effectively solving system reliability optimization problems. The proposed aGLS hybridizes a local search technique and genetic algorithm (GA). The local search technique is incorporated into the GA loop and its scheme is adaptively regulated with respect to the similarity among the individuals of GA population. For more various comparisons with the proposed aGLS, conventional GLS algorithm with local search that does not use any adaptive scheme is also suggested. These two algorithms are tested and analyzed using two complex system reliability optimization problems. Numerical result shows that the proposed aGLS outperforms the conventional GLS.

정지궤도위성용 태양전지판 전기적 접속시험 형상 설계 및 시험 결과 분석

김영윤(Young-Yun Kim),권재욱(Jae-Wook Kwon),윤영수(Young-Su Youn),최종연(Jong-Yeoun Choi) 한국항공우주연구원 2010 항공우주기술 Vol.9 No.2

한국항공우주연구원에서는 정지궤도위성의 조립 및 시험을 프랑스 아스트리움(Astrium)사와 공동 수행하고 있다. 시험의 일환으로 태양전지판의 상태와 버스에 접속하여 전개 및 그 접속검증 시험을 수행하였다. 저궤도 위성의 경우 기계적 힌지구조로 전체 전개가 이루어지고 전기적 접속 또한 태양 전지판이 생산하는 전력, 태양센서의 신호 등이 전달되는 단순한 구조이나, 정지 궤도 태양전지판의 경우 기계적인 힌지와 전기적인 모터를 통하여 전체 전개가 이루어짐으로서 구동에 필요한 신호 등의 전기적접속이 다양하다. 이에 이를 구동하는 전기적 접속 및 파이로 신호전달 접속을 검증하기 위한 시험형상을 설계하고, 이 시험을 위한 지상지원장비의 구성 및 검증 결과의 특성을 분석하였다. KARI had integrated and tested GEO satellite in cooperation with Astrium Inc., France. In the middle of integration and test, It was necessary to check GEO satellite SA(solar array) status and require electrical interface verification with bus. SA of GEO satellite have different mechanical characteristics in comparison with those of LEO satellite which was tested in KARI. LEO SA has been deployed by simple mechanical hinge system but GEO SA has been done by more complicated method. so in this paper, we designed the test configuration and analyzed the test result of solar array electrical integration of GEO satellite.