The main objective of this paper is to develop a Supply chain model of a volume agile manufacturing process for the deteriorating items. It is assumed that an EOQ model in which inventory is depleted not only by demand also by deterioration. In this study, a model for the producer by assuming stock dependent demand rate is developed. It is assumed that the deterioration rate follows the Weibull...

This paper deals with a continuous-time model of a production and maintenance system whose performance deteriorates over time. The problem of adaptive control of a production-maintenance system with unknown deterioration rate is presented. Using a feedback the scheduled production rate, preventive maintenance rate, and updating rule of deterioration and obsolescence rates will be derived.

Recently, Skouri et al. (2009) proposed two inventory models with general ramp-type demand rate, Weibull deterioration rate, and partial backlogging of unsatisfied demand: (a) Model 1 was starting with no shortages, and Model 2 was starting with shortages. They derived the optimal solutions for both models. Then they ran 2 numerical examples, and concluded that ”the total cost for the model sta...

In this paper, an inventory model with ramp type demand rate with inflation and time value of money is developed. The deterioration rate follows three-parameter Weibull distribution with the concept of life time of an item. Shortages are also allowed and unsatisfied demand is partially backlogged. The model is fairly general in practice, as the demand of some items such as fashionable items inc...

Manna and Chaudhuri (Eur. J. Oper. Res. 171(2):557–566, 2006) presented a production-inventory system for deteriorating items with demand rate being a linearly ramp type function of time and production rate being proportional to the demand rate. The two models without shortages and with shortages were discussed. Both models were studied assuming that the time point at which the demand is stabil...

This study models a joint pricing, inventory, and preservation decision-making problem for deteriorating items subject to stochastic demand and promotional effort. The generalized price-dependent stochastic demand, time proportional deterioration, and partial backlogging rates are used to model the inventory system. The objective is to find the optimal pricing, replenishment, and preservation t...

Abstract In this paper, we deal with the lumpability approach to cope state space explosion problem inherent computation of stationary performance indices large stochastic models. The method is based on a aggregation technique and applies Markov chains exhibiting some structural regularity. Moreover, it allows one efficiently compute exact values when model actually lumpable. notion quasi-lumpa...

proper inventory control policy and the optimal price for the items has always been one of the main topics of scientific research and industry. on the other hand, there are many products in the market witch are classified as deteriorating items. therefore the problem of determining optimal price and optimal inventory policy for this type of items is very important. in this paper a 3 echelon sup...

The first aim of this study was to determine the age group at which marathon performance declines in top male and female runners and to compare that to the runners of average ability. Another aim of this of this study was to examine the age-related yearly decline in marathon performance between age group winners and the average marathon finisher. Data from the New York (NYC), Boston, and Chicag...

This paper presents some developed and implemented theory which can be applied to optimization of condition-based maintenance decisions within the context of physical asset management. We examine a replacement problem for a system subject to stochastic deterioration. In particular, the analysis of a preventive replacement policy of the control-limit type for a system subject to inspections at d...