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안과수술용 근적외선 입체현미경의 신뢰도 확보를 위한 프로세스 정립
김민호(Min-Ho Kim),이종환(Jonghwan Lee),위도영(Doyeong Wie),조중길(Joonggil Cho),강경수(Kyungsu Kang) 한국산업경영시스템학회 2013 한국산업경영시스템학회지 Vol.36 No.2
When developing a product, ensuring the quality and reliability is essential. Reliability process is always underestimated compared to its importance, especially in the field of domestic medical devices. In this paper, reliability process developed for near-infrared solid microscope, based on a variety of existing practices and other product process. The following findings were obtained as research progressed. First, learning about the medical equipment needed to assure the quality and reliability standards. Second, reliability process established to design a product in the field of medical devices.
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.