TOC(Theory Of Constraints) has been applied to manufacturing field traditionally. Nowadays, it's area is being wide to SCM, Service, Marketing. This paper analyzed Demand pull Manufacturing system, then, tried to apply TOC concept for improving productivity. It used DBR (Drum-Buffer-Rope) considering defect and OEE (Overall Equipment Efficiency) . For illustration, simulation was showed and it is suggested how to do for productivity improvement.

Abstract
 1. 도 입
 2. TOC란 무엇인가
  2.1 TOC 개념과 문헌연구
  2.2 기존 문헌의 확장연구
 3.실험 설계 (Design of experiment)
 4. 실험결과 분석
 5. 결 론
 참고문헌

• 박동연(한양대학교 산업공학과)
• 윤덕균(한양대학교 산업공학과)