this study considers an eoq inventory model with advance payment policy in a fuzzy situation by employing two types of fuzzy numbers that are trapezoidal and triangular. two fuzzy models are developed here. in the first model the cost parameters are fuzzified, but the demand rate is treated as crisp constant. in the second model, the demand rate is fuzzified but the cost parameters are treated ...

Customers with positive demand lead times place orders in advance of their needs. A portfolio of customers with different demand lead times gives rise to what we call advance demand information. We develop effective inventory policies for a distribution system to account for this information. In particular, we study a centralized system with one warehouse serving multiple retailers under advanc...

This paper investigates the effects of investment and inspection policies on an integrated production–inventory model involving defective items upstream advance-cash-credit payment provided by supplier. In this model, retailers offer customers a downstream credit period. Furthermore, rate item can be improved through capital co-investment supplier retailer. The objective study was to determine ...

In the business world, it is generally observed that supplier gives cash discount due to advance payment. The buyer may either pay off total purchase cost or a fraction of before receiving products. If makes full payment then he receives instantly. pays cost, (s)he while paying remaining amount at time lot. Moreover, in most inventory models, assumed delivered lot contains only perfect items. B...

In today’s fast marketing over the Internet or online, many retailers want to trade at the same time and change their marketing strategy to attract more customers. Some of the customers may decide to cancel their orders partially with a retailer due to various reasons such as increase in customer’s waiting time, loss of customer’s goodwill on retailer’s business, attractive promotional schemes ...

Advance demand information, when used effectively, improves the performance of production/inventory systems. In this paper, we investigate the value of advance demand information in production/inventory systems. For a single-stage make-to-stock queue, we assess the value of using advance demand information under a variety of assumptions on the cost of obtaining advance demand information, and t...