There is only one server available and arriving work require services from this server. Job are processed by the machine one at a time. The most common objective is to sequence jobs on the severs so as to minimize the penalty for being late, commonly called tardiness penalty Based on other objectives, many criteria may serve as s basis for developing job schedules. Therefore, this study tries to proposed that Scheduling by customer needs group for minimizing the problem and reducing inventory, product development time, cycle time, and order lead time.

Abstract
 1. 서론
 2. 고객 요구에 대한 LTV(LifeTime Value)설정
 3. COVERT(Cost OVER Time) 규칙을 활용한 고객 요구에 대한 일정계획
  3.1 가정
  3.2 기호 정리
  3.3 COVERT(Cost OVER Time) 규칙을 활용한 일정계획 수립
 4. 단일업체에서의 LTV를 적용한 일정계획 수립
 5. 결론
 6. 참고문헌

• 양광모 | Yang Kwang Mo
• 박재현 | Park Jae Hyun
• 강경식 | Kang Kyung Sik