XXIV Congresso da Associação Portuguesa de Investigação Operacional (IO2025)

Session

Session 1.1 - Optimization-Simulation

Not scheduled

Room 1

97. A hybrid optimization-simulation framework for sustainable closed-loop supply chains design and planning

Miguel Vieira (ULusófona)

Apresentação regular

Sustainability challenges have become a central concern in supply chain design and planning, requiring effective decision-support methods that address economic, environmental, and social objectives. This work proposes a hybrid optimization–simulation framework that combines a mixed-integer linear programming model, used to optimize sustainability goals through a novel practically oriented...

90. An Optimisation and Simulation Approach for the Design of Demand Responsive Transport Services

Armando Dauer (Universidade do Porto)

Apresentação regular

Demand-responsive transport (DRT) systems are quite flexible, adapting quickly to changes in demand through dynamic routing, scheduling, and fleet sizing. Unlike conventional public transport, DRT operations are often planned daily, especially in low-demand contexts. However, as demand grows, planning becomes computationally intensive. While effective methods exist in the literature, many are...

42. Optimization-Simulation approach for the vehicle routing problem with time windows and synchronized visits under travel and service time uncertainty

Daniel Santos (CEGIST, Instituto Superior Técnico, Universidade de Lisboa)

Apresentação regular

In this presentation, we address the vehicle routing problem with time windows and synchronized visits under uncertain service and travel times. Specifically, a subset of clients require simultaneous service by two vehicles, which is initiated only after the arrival of both vehicles and, consequently, enforces a waiting period for the vehicle that arrived earlier. To tackle this problem, we...