The article proposes an approach for modeling and solving the air cargo transportation, loading, and phase-based maintenance scheduling problems in an integrated fashion. It describes the demand channel routing strategy to meet the earliest pickup and delivery requirements in emergency...

This paper deals with two different route design problems in a continuous space with neighbours and barriers: the shortest path and the travelling salesman problems with neighbours and barriers. Each one of these two elements, neighbours and barriers, makes the problems harder than their...

HighlightsOrder aggregation and scheduling in a meal delivery problemAlessandro Agnetis, Matteo Cosmi, Gaia Nicosia, Andrea Pacifici• A new model for scheduling single- or dual-order deliveries• A branch and bound algorithm makes use of sophisticated lower bounding schemes• Extensive...

Aiming at the problems of sharp path turning points, weak search directionality, and excessive number of calculation nodes in the traditional star algorithm when planning paths, the angle constraint, the way guide strategy, and the path search step size of the A star algorithm are improved....

This paper studies an extension of the rural postman problem with multiple depots and rechargeable and reusable vehicles capable of multiple trips with capacity constraints. This paper presents a new Mixed Integer Linear Programming (MILP) formulation to find optimal solutions to the problem....