When suppliers (i.e., contract manufacturers) fail to comply with environmental or safety regulations, several non-governmental agencies and consumer activists put pressure on the buyers (customers) to take necessary actions to improve supplier compliance. Due to concerns over negative image and...

We 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...

We present a methodology for long-term mine planning based on a general capacitated multicommodity network flow formulation. It considers underground and open-pit ore deposits sharing multiple downstream processing plants over a long horizon. The purpose of the model is to optimize several mines...

This article studies the static pricing problem of a network service provider who has a fixed capacity and faces different types of customers (classes). We consider a single-bandwidth tree network, meaning that each class can have its own capacity constraint but it is assumed that all classes...

Motivated by retailers' frequent introduction of new items to refresh product lines and maintain their market share, we present the assortment packing problem in which a firm must decide, in advance, the release date of each product in a given collection over a selling season. Our formulation...

We study the static pricing problem for a network service provider in a loss system with a tree structure. In the network, multiple classes share a common inbound link and then have dedicated outbound links. The motivation is from a company that sells phone cards and needs to price calls to...

Working in collaboration with Spain-based retailer Zara, we address the problem of distributing, over time, a limited amount of inventory across all the stores in a fast-fashion retail network. Challenges specific to that environment include very short product life cycles, and store policies...

Frequent changes in the product assortment can increase sales, especially under the presence of variety-seeking customers. This has been observed in several settings, and in particular, it has been a driver of the recent success experienced by fast fashion retailers, such as Zara and H&M. Since...

We present a methodology for long‐term mine planning based on a general capacitated multi-commodity network flow problem formulated as a comprehensive math programming model. The planning methodology considers underground and open pit ore deposits sharing multiple downstream processing plants...