This paper describes the impact of two different information sharing strategies – decentralized and centralized information – combined with two inventory control policies – min-max and stock-to-demand inventory control – on the bullwhip effect. To investigate and measure this impact, simulation models are developed using the Arena 5.0 software package for a four-stage supply chain, consisting o...

Like the majority of the university establishments in the former USSR , Al Farabi university functions, for historical reasons, according to a very centralized model: this model imposes significant collections of information and permanent data exchanges which are done by heavy, complex procedures and often not very reliable. The absence of global views and management reports as well as slowness...

AGGREGATION AND DISAGGREGATION IN MARKOV DECISION MODELS FOR INVENTORY CONTROL

In recent years, the rapid technological advancements, the increased economic uncertainty, and the globalization of economic activities have resulted in fierce competition, and more sophisticated and demanding customers. These characteristics of the new economic environment are translated to short product life cycles, increased demand for customized products, and quick response to customers’ an...

In partial backorder inventory system, when demand is not satisfied, unmet demand would be backordered partially. Either backorder or lost sales would make the cost increase. For a buyer, it is important to decide how much inventory should be prepared. A great deal of research efforts have been devoted to it over a few decades. Previous researches always assume that the lead time is fixed param...

Logistics management is a crucial component of success for companies operating in the retail industry. As popularity online shopping continues to grow, businesses must implement efficient logistics practices satisfy customers, cut costs, and maintain competitive edge. This article offers comprehensive overview e-commerce, with focus on identifying challenges, opportunities, strategies, solution...

In this paper we give a comparative overview on research works dealing with replenishment policies. Following recalls of the inventory control concepts, a recent literature review is given relating to spare parts. Cited works are classified into two categories, those who consider inventory control as statistic and the others, as dynamic. For each category, works about economic order quantity an...