The Center for the Management of Information (CMI) at the University of Arizona worked with the US Navy Commander, Third Fleet (Third Fleet) to overcome limitations of performing closely coordinated staff work on board a US Navy ship. Third Fleet is required to collaborate with hundreds of people internally and with military and civilian organizations both nationally and internationally. Third ...

Vehicle routing variants with multiple depots and mixed fleet present intricate combinatorial aspects related to sequencing choices, vehicle type choices, depot choices, and depots positioning. This paper introduces a dynamic programming methodology for efficiently evaluating compound neighborhoods combining sequence-based moves with an optimal choice of vehicle and depot, and an optimal determ...

Open pit mining is based on dynamic operations within the open pit, with haulage operation being most decisive in terms of cost and overall productivity operation. A vital aspect for success are conditions roads, which change over time due to wear tear. The present work aims model evaluate effect temporal deterioration affecting roads an through rolling resistance, using discrete event simulati...

This paper addresses the problem of task assignment and trajectory generation for installing bird diverters using a fleet multi-rotors. The proposed solution extend our previous motion planner to compute feasible constrained trajectories, considering payload capacity limitations recharging constraints. Signal Temporal Logic (STL) specifications are employed encode mission objectives temporal re...

We study an optimization problem of a regional airline company. The problem integrates three stages of the planning process that are typically solved in sequence: fleet assignment, aircraft routing and crew pairing. Aircraft maintenance is also taken into account. We present two mathematical formulations for the integrated problem. One formulation could be considered the natural model where bot...

In this paper we present methodologies for improving the demand-responsiveness of air transportation systems. The main ingredients are the flexibility in transportation capacity provided by an innovative aircraft and an integrated model where supply-demand interactions are explicitly formulated. The integrated model benefits from the simultaneous schedule planning and revenue management decisio...

Given the sets of flights and aircraft of an airline carrier, the fleet assignment problem consists in assigning the most profitable aircraft type to each flight. An extension to this problem is to allow for some flexibility on flight departure times. These time adjustments increase the number of possible connections and therefore improve the solution quality in terms of profits or in the reduc...