- 공유환경효과를 고려한 수리가능한 시스템의 수명과 고장회수의 결합모형 개발
- ㆍ 저자명
- 박희창,이석훈
- ㆍ 간행물명
- 品質經營學會誌
- ㆍ 권/호정보
- 1998년|26권 4호|pp.111-123 (13 pages)
- ㆍ 발행정보
- 한국품질경영학회
- ㆍ 파일정보
- 정기간행물| PDF텍스트
- ㆍ 주제분야
- 기타
We consider the problem of modeling count data where the observation period is determined by the life time of the system under study. We assume random effects or a frailty model to allow for a possible association between the death times and the counts. We assume that, given a random effect or a frailty, the death times follow a Weibull distribution with a hazard rate. For the counts, given a frailty, a Poisson process is assumed with the intensity depending on time. A gamma distribution is assumed for the frailty model. Maximum likelihood estimators of the model parameters are obtained. A model for the time to death and the number of failures system received is constructed and consequences of the model are examined.