조립작업장에서 조립단계여유의 절대값을 이용한 지체작업비율의 최소화

In recent, since the competition between the manufacturing firms has been so increased that the customer-oriented performance has been important, the manager's concern focus on the performance measures related due date. An average tardiness does not fully describe a manager's orientation toward jobs completed after their due date. Percentage tardy indicates how many jobs are completed after their due-date and may be viewed as a type of customer service level. Also, in a research of competitive priorities of manufacturing firms, competitive priorities are the orders of on-time delivery, consistent quality, high performance design, price, fast delivery time, customization, volume flexibility, and so on. In conclusion, we suggest that the single most critical measure of performance is the percentage tardy. This research proposes dispatching rule for assembly job shop that minimizes the percentage of tardy jobs, which have not been attempted in the proceeding studies. The proposed rule uses the absolute slack of assembly stage.