摘要:

AbstractAn economic order quantity (EOQ) inventory model for deteriorating goods is developed with a linear, positive trend in demand allowing inventory shortages and backlogging. The effects of inflation and the time-value of money are incorporated into the model, considering two separate inflation rates: namely, the internal (company) inflation rate and the external (general economy) inflation rate. It is assumed that the goods in the inventory deteriorate over time at a constant rateθ. The inventory policy is discussed over a finite time-horizon with several reorder points. The results are discussed with a numerical example and a sensitivity analysis of the optimal solution with respect to the parameters of the system is carried out. Several particular cases of the model are discussed in brief.

ISSN:0160-5682    

DOI:10.1057/jors.1995.107

出版商:Taylor&Francis    

年代:1995

数据来源: Taylor

摘要:

AbstractIn this paper we deal with the machine repair problem consisting ofMoperating machines withSspare machines, andRrepairmen where machines have two failure modes under steady-state conditions. Spares are considered to be either cold-standby, warm-standby or hot-standby. The two failure modes have equal probability of repair. Failure time of the machines and repair time of the repairmen are assumed to follow a negative exponential distribution. A cost model is developed in order to determine the optimal values of the number of repairmen and the number of spares simultaneously, while maintaining a minimum specified level of system availability. Numerical results are presented in which several system characteristics are evaluated for three types of standby under optimal operating conditions.

ISSN:0160-5682    

DOI:10.1057/jors.1995.108

出版商:Taylor&Francis    

年代:1995

数据来源: Taylor

ISSN:0160-5682    

DOI:10.1057/jors.1995.109

出版商:Taylor&Francis    

年代:1995

数据来源: Taylor

ISSN:0160-5682    

DOI:10.1057/jors.1995.110

出版商:Taylor&Francis    

年代:1995

数据来源: Taylor

ISSN:0160-5682    

DOI:10.1057/jors.1995.111

出版商:Taylor&Francis    

年代:1995

数据来源: Taylor

ISSN:0160-5682    

DOI:10.1057/jors.1995.112

出版商:Taylor&Francis    

年代:1995

数据来源: Taylor