Nicolau Dionísio Fares Gualda

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Article Info Abstract Keywords: air transportation airline crew assignment combinatorial optimization heuristics A typical problem related to airline crew management consists of optimally assigning the required crew members to planned flights for a given period of time, while complying with a variety of labor regulations, safety rules and policies of the(More)
In this paper, two different heuristics for the vehicle routing problem with time windows (VRPTW) are presented: the Sequential Insertion Heuristic and the Cluster and Sequential Insertion Heuristic. Both are based on the Lagrangian relaxation of the constraints which require each customer to be serviced exactly once. They were evaluated based on the(More)
The paper presents highlights of a doctoral research addressed to model and solve the problem of preventive maintenance scheduling of fleets of vehicles. The problem is formulated and several Ant Colony based approaches were proposed and tested considering different instances of the maintenance scheduling problem, including applications related to the(More)
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