In this paper we discuss the possible affects of inflations by the supplier on a retailer’s replanishment policy for time-dependent deteriorating items with constant demand rate. This optimal order quantity is obtained for all four cases i.e. for case 1, 0<T<Td , case 2, Td ≤T<M, case 3, Td ≤M ≤T and case 4, M≤ Td <T. The optimal total relevent cost is obtain for all these four cases which is m...

This paper tries to incorporate both Chung and Huang (2003b) and Huang and Chung (2003) to develop the buyer’s inventory model. That is, we want to investigate the buyer’s optimal cycle time and optimal payment time under supplier’s trade credit policy and cash discount policy. Mathematical models have been derived for obtaining the optimal cycle time and optimal payment time for item under sup...

The single-vendor single-buyer integrated production inventory system has been an object of study for a long time, but little is known about the effect of investing in reducing ordering cost on the integrated inventory models with backorder price discount and variable lead time. The purpose of this article is to investigate in the continuous review model with backorder price discount and variab...

Forests provide significant commodity and noncommodity values to the citizens of the United States. An important and substantial role in ensuring the continued health, productivity, and sustainability of these resources is a reliable and credible inventory and monitoring program. The Forest Inventory and Analysis (FIA) program of the US Forest Service has been monitoring and reporting on status...

Trade credit has many forms in today’s business practice. The most common form of trade credit policy that is used to encourage retailers to buy larger quantities is order-size dependent. When the number of ordered units exceeds the capacity of the own warehouse, an additional rented warehouse is required to store the excess units. Therefore, to incorporate the concept of order-size dependent t...

We consider a dynamic inventory (production) model with general order (production) costs and excess demand that can be backordered or refused by the rm. A unit backordered incurs a backorder cost, a unit refused incurs a lost sales charge. Endogenizing the sales decision is necessary in the presence of general convex order costs so that the rm is not forced to backorder a unit whose subsequent ...

An inventory model with 3-variable Weibull distribution demand rate and constant deterioration is developed. The holding cost is constant. Shortages are not allowed. The salient feature of this inventory model is for non-perishable products or deteriorating items. A numerical example has been illustrated using MATLAB to describe the model and the sensitivity analysis of various parameters is ca...

W propose an extension of the competitive newsvendor model to investigate the impact of quick response under competition. For this purpose, we consider two retailers that compete in terms of inventory: customers that face a stockout at their first-choice store will look for the product at the other store. Consequently, the total demand that each retailer faces depends on the competitor’s invent...

This paper investigates the backorder rate inventory problem with defective units. In practice, the uncertainties of customer’s demand and backorder rate are inherent; hence, backorder rate and customer’s demand are not constant. In this study, we assume that the backorder rate is dependent on the amount of shortages and backorder price discounts, and the lead time demand follows a mixture of d...

In the competitive retail industry many retailers employ the strategy of bundling goods they merchandize with optional value-added packages to enhance the attraction of the goods and increase the revenue. The package offerings can vary with the inventory level of the goods. Offering such packages impacts upon the sales of the goods, and hence, affects inventory management of the goods. In this ...