Abstract Throughout its history, Operational Research has evolved to include methods,
models and algorithms that have been applied to a wide range of contexts. This …

The COVID-19 pandemic has exposed vulnerabilities in global supply chains, leading to
economic damage and product shortages caused by demand surges and supply …

We study dual sourcing under stochastic and non-stationary demand. The non-stationarity is
modeled through Markov-modulated changes in the underlying demand distribution. The …

We consider a joint control of pricing and production in a two‐item inventory system, where
each item can be produced by its dedicated source or a shared flexible source, under the …

Abstract Models of queuing-inventory systems with two inventory replenishment policies
(IRPs) are studied: with a fixed supply volume and with a variable supply volume …

Problem definition: We consider a periodic-review dual-sourcing inventory system with a
regular source (lower unit cost but longer lead time) and an expedited source (shorter lead …

We develop a dynamic model of inventory and trade to study how an importer may hedge
demand uncertainty when importing involves an order lead time. We show that when the …

A key challenge in inventory management is to identify policies that optimally replenish
inventory from multiple suppliers. To solve such optimization problems, inventory managers …

This work, the first part (Part A) of a comprehensive study, presents a survey on Robust
Optimization (RO) in inventory management, highlighting its role in addressing uncertainties …

A hybrid replenishment policy in double sources queuing-inventory system with MAP flow of
consumer customers is proposed. The service time of the consumer customer has a phase …