in this paper the real-world occurrence of the multiple-product multiple-constraint single period newsboy problem with two objectives, in which there is incremental discounts on the purchasing prices, is investigated. the constraints are the warehouse capacity and the batch forms of the order placements. the first objective of this problem is to find the order quantities such that the expected ...

The newsboy problem is a well-known operations research model. Its various extensions have been applied to scheduling and evaluating advanced orders in manufacturing, retail and service industries. This paper focuses on a dynamic, continuous-time generalization of the single period newsboy problem. Similar to the classical newsboy problem, the model may represent the inventory of an item that b...

The newsboy problem is a well-known operations research model. Its various extensions have been applied to managing capacity and evaluating advanced orders in manufacturing, retail and service industries. This paper focuses on a dynamic, continuous-time generalization of the single-period newsboy problem. The problem is characterized by a number of the newsboys whose operations are organized an...

This paper investigates the effect of product substitution in the single-period ‘newsboy-type’ problem in a fuzzy environment. It is supposed that the single-period problem operates under uncertainty in customer demand, which is described by imprecise terms and modelled by fuzzy sets. To perform this analysis, we consider the fuzzy model for two-item with upward substitution. This upward substi...

Many extension of the newsboy problem have been solved in the literature. One of those extensions solves a newsboy problem with stochastic initial inventory, earlier extensions have focused on quantity discounts offered by suppliers. An important practical extension would address a combination of the two pervious extensions. In this paper we consider a newsboy problem in which the suppliers off...

A single period inventory problem, also known as the newsboy problem, is to final optimal order quantity for maximizing the newsboy’s expected profit under demand uncertainty. We extend the problem by considering suppliers’ quantity discounts and a resource-capacity constraint. A Lagrangian heuristic is developed to solve the problem with a large number of products. A preliminary numerical resu...

A single period inventory model, also popularly known as the Newsboy or Christmas tree problem, is to decide the quantity of a single product to be manufactured or purchased for a single period such that the quantity maximizes (minimizes) the expected profit (cost) under stochastic demand. The earliest works in this area were those by Hadley and Whittin (1963) and Hodges and Moore (1970). The l...

In this paper the real-world occurrence of the multiple-product multiple-constraint single period newsboy problem with two objectives, in which there is incremental discounts on the purchasing prices, is investigated. The constraints are the warehouse capacity and the batch forms of the order placements. The first objective of this problem is to find the order quantities such that the expected ...

The classic newsboy problem assumes the market demand to be a random variable. However, when the decision maker wants to expand the market share, he has to provide a subjective estimate of new market demand distribution due to the lack of historical data. Thus, randomness and uncertainty simultaneously appear in a newsboy problem. The aim of this work is to extend the analysis of the classic ne...