A lexicographical dynamic flow model for relief operations

Emergency management is a highly relevant area of interest in operations research. Currently the area is undergoing widespread development. Furthermore, recent disasters have highlighted the importance of disaster management, in order to alleviate the suffering of vulnerable people and save lives. In this context, the problem of designing plans for the distribution of humanitarian aid according to the preferences of the decision maker is crucial. In this paper, a lexicographical dynamic flow model to solve this problem is presented, extending a previously introduced static flow model. The new model is validated in a realistic case study and a computational study is performed to compare both models, showing how they can be coordinated to improve their overall performance

Matching Demand and Supply to Maximize Profits from Remanufacturing

The profitability of remanufacturing depends on the quantity and quality of product returns and on the demand for remanufactured products. The quantity and quality of product returns can be influenced by varying quality-dependent acquisition prices, i.e., by using product acquisition management. Demand can be influenced by varying the selling price. We develop a simple framework for determining the optimal prices and the corresponding profitability. We motivate and illustrate our framework using an application from the cellular telephone industry.Remanufacturing, Product Acquisition, Econometric Models

The Economics of Remanufacturing Under Limited Component Durability and Finite Product Life Cycles

This paper models and quantifies the cost-savings potential of production systems that collect, remanufacture, and remarket end-of-use products as perfect substitutes while facing the fundamental supply-loop constraints of limited component durability and finite product life cycles. The results demonstrate the need to carefully coordinate production cost structure, collection rate, product life cycle, and component durability to create or maximize production cost savings from remanufacturing.remanufacturing, life cycle, durability, economic model