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최창환(Changhwan Choi),이종환(Jonghwan Lee),김태성(Tae-Sung Kim),윤상한(Sanghan Yoon),박광희(Kwanghee Park),이희천(Heechun Lee),서영복(Yeongbok Seo) 한국산업경영시스템학회 2011 한국산업경영시스템학회지 Vol.34 No.1
This study looks at a company which introduced SAP program, one type of ERP systems, and how the firm copes with the problems which happen in business process. The research tried to solve the problem by IDEAL method of process software improvement methodology. As a result, receipt account program for credit sales could be developed; the program was applied to the actual business work and operated.
A Genetic Algorithm and Discrete-Event Simulation Approach to the Dynamic Scheduling
윤상한(Sanghan Yoon),이종환(Jonghwan Lee),정관영(Gwan-Young Jung),이현수(Hyunsoo Lee),위도영(Doyeong Wie),정지용(Jiyong Jeong),서영복(Yeongbok Seo) 한국산업경영시스템학회 2013 한국산업경영시스템학회지 Vol.36 No.4
This study develops a dynamic scheduling model for parallel machine scheduling problem based on genetic algorithm (GA). GA combined with discrete event simulation to minimize the makespan and verifies the effectiveness of the developed model. This research consists of two stages. In the first stage, work sequence will be generated using GA, and the second stage developed work schedule applied to a real work area to verify that it could be executed in real work environment and remove the overlapping work, which causes bottleneck and long lead time. If not, go back to the first stage and develop another schedule until satisfied. Small size problem was experimented and suggested a reasonable schedule within limited resources. As a result of this research, work efficiency is increased, cycle time is decreased, and due date is satisfied within existed resources.