Operational Research

M. J. Alves, C. H. Antunes, and I. Soares, A study of a state-of-the-art algorithm for mixed-integer linear bilevel optimization.- C. Pinto, G. Figueira, and P. Amorim, Using supplier networks to handle returns in online marketplaces.- A. S. Carvalho and M.E. Captivo, The multiple ambulance type dispatching and relocation problem: optimization approaches.- H. Ponte, H. Rocha, and J. Dias, Automated Radiotherapy Treatment Planning Optimization: A Comparison Between Robust Optimization and Adaptive Planning.- J. Dion´isio, and J. P. Pedroso, An optimization model for power transformer maintenance.- E. Eloy, V. Bushenkov, and S. Abreu, Multi-objective Finite-Domain Constraint-based Forest Management.- M. T. Godinho and M. Pascoal, Implementation of geographic diversity in resilient telecommunication networks.- M. I. Gomes, Ana C. Jóia, J. Pinela, and N. Chibeles-Martins, Are the Portuguese Fire Departments well located for fighting urban fires?.- C. Lopes, A. Maria Rodrigues, E. Ozturk, J. S. Ferreira, A. C. Nunes, P. Rocha, and C. Teles Oliveira, Parcel Delivery Services: a Sectorization Approach with Simulation.- J. F. Ferreira and R. B. Lopes, Decision Support System for Scheduling the Production of Screw Caps in a Flexible Job-Shop Environment.- D. Bandeira1 and M. Pascoa, Bimaterial three-dimensional printing using Digital Light Processing projectors.- M. Batista, J. P. Ribeiro, and A. Barbosa-P´ovoa, Supply Chain Resilience: Tactical-Operational Models, a Literature Review.- J. Sequeiros, F. R. Ramos, M. T. Pereira, M. Oliveira, and L. Rubio, Applying Deep Learning Techniques to Forecast Purchases in the Portuguese National Health Service.- L. P. Gomes, A. Vieira, R. Fragoso, D. Almeida, L. Coelho, J. M. Neves, A Three-Level Decision Support Approach Based on Multi-Objective Simulation-Optimization and DEA: A Supply Chain Application.- C. Santos, A. R. Xambre, A. Hall, H. Alvelos, S. Marques, I. Martins and F. Alvelos, Modelling Forest Fire Spread Through