In this work, the capacitated location-routing problem with simultaneous pickup and delivery (CLRP-SPD) is considered. This problem is a more realistic case of the capacitated location-routing problem (CLRP) and belongs to the reverse logistics of the supply chain. The problem has many real-life applications of which some have been addressed in the literature such as management of liquid petrol...

Municipal waste management has become a challenging issue with the rise in urban populations and changes people’s habits, particularly developing countries. Moreover, government policy plays an important role associated municipal management. Thus, this research proposes regional location routing problem (RLRP) model multi-depot (MRLRP) model, which are extensions of (LRP), to provide better col...

In this paper we provide methods for the Continuous Monitoring Problem with Inter-Depot routes (CMPID). It arises when a number of agents or vehicles have to persistently survey a set of locations. Each agent has limited energy storage (e.g., fuel tank or battery capacity) and can renew this resource at any available base station. Various realworld scenarios could be modeled with this formulati...

In this paper, we study the location routing problem with replenishment facilities (LRPRF), an extension of the location routing problem (LRP) where the vehicles can replenish at some replenishment facilities. Vehicles leave the depot with load on-board, serve customers until out of load, and then either return to a replenishment facility to reload or return to the depot, completing their route...

among numerous np-hard problems, the traveling salesman problem (tsp) has been one of the most explored, yet unknown one. even a minor modification changes the problem’s status, calling for a different solution. the generalized traveling salesman problem (gtsp)expands the tsp to a much more complicated form, replacing single nodes with a group or cluster of nodes, where the objective is to fi...