The economic context leads companies to answer quickly to the unpredictable changing customer demands. Advanced Planning Systems (APS) are useful tools to set up quickly Sales and Operations Planning (SOP) and Master Production Schedules (MPS). The problem is to obtain stable plans and schedules in spite of the unstable demand. In this paper, we propose a special procedure based on mathematical...

Revenue-sharing contracts are a kind of mechanism aimed at improving performance and achieving precise coordination of the supply chain. In this paper, we analyse and develop the revenue-sharing contract model of the three-level supply chain with distributor’s sales effort dependent demand. The paper discusses the impacts of sales efforts on coordination of the supply chain and explains the rea...

T paper studies a buyer’s procurement strategies in a two-stage supply chain with price-sensitive demand. The buyer procures a product from a supplier and then sells to the marketplace. Market demand is stochastic and depends on the buyer’s selling price. The supplier’s production cost is private information, and the buyer only knows the distribution of the cost. Both the buyer and the supplier...

This paper studies quantity surcharge and heterogeneity in consumer attention, using scanner data in the peanut butter category. Quantity surcharge exists for packaged goods when a smaller package size is cheaper than its larger size counterpart per unit. Quantity surcharges are frequent in the data, and households have heterogeneous purchasing behavior during quantity surcharge weeks: attentiv...

This paper studies a buyer’s procurement strategies in a two-stage supply chain with price-sensitive demand. The buyer procures a product from a supplier and then sells to the marketplace. Market demand is stochastic and depends on the buyer’s selling price. The supplier’s production cost is private information, and the buyer only knows the distribution of the cost. Both the buyer and the suppl...

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...

For the total cost of the inventory without backorder model, if we fuzzify the order quantity, the total demand, the cost of storing and the cost of placing an order as fuzzy numbers then we can obtain the fuzzy total cost. In this paper, we apply the signed distance method to defuzzify the fuzzy total cost and then solve the optimal order quantity.

The integration process between evolutionary approach and conventional economic analysis is very essential for the next development of economic studies, especially in the fundamental concepts of modern economics: supply and demand analysis. In this presentation, we use the concept of meme to explore evolution of demand. This study offers an evolutionary model of demand, which views utility as a...

The Internet Demand Experiment (INDEX) was a project to measure how much people are willing to pay for different kinds of Internet quality of service (QoS), such as bandwidth or volume of bits transferred. In the bandwidth experiments, which took place during 1998-99, subjects were offered high-speed residential Internet connections. Each week the price of bandwidth was changed, and experimente...

In this paper we present two models for joint stock replenishment and shipment consolidation decisions which arise in the context of vendor managed inventory. Stock replenishment from suppliers or shipment to customers each incurs a lump-sum cost to the vendor. We assume the vendor uses the reorder point, lot-size policy to replenish stock and one of two schemes to dispatch shipment: the time-b...