With the rapid development of 5G and 6G communications in recent years, there has been
significant interest in space–air–ground integrated networks (SAGINs), which aim to achieve …

The cooperative delivery of trucks and drones promises considerable advantages in delivery
efficiency and environmental friendliness over pure fossil fuel fleets. As the prosperity of …

The parcel demand in last-mile delivery increases sharply with the growth of e-commerce,
which has been accelerated by the COVID-19 pandemic. The current delivery scheme …

Drones are increasingly utilized for transportation reconnaissance due to their expansive
field of view, cost-effectiveness, and agility. They can pre-reconnaissance the traveling …

This study presents a comprehensive literature survey on facility location problems for drone
(uncrewed vehicle) delivery in situations where drones can ride in or on other vehicles. This …

This paper proposes a novel problem called the time-dependent hydrogen fuel cell vehicle
routing problem with drones and variable drone speeds (TDHFCVRP-D-VDS). In this …

In the last decades, natural disasters, such as earthquakes and landslides, have occurred
frequently, seriously threatening the safety of people's lives and property. How emergency …

Background: This paper discusses the optimization of a novel fuzzy hierarchical location-
routing problem, taking into consideration reliability. The mathematical model presented …

Drones have recently been suggested as a means of performing last-mile deliveries, as they
have several advantages compared to traditional delivery vehicles. A recent research …

Abstract Heterogeneous Vehicle Routing aims to construct routes for various vehicles while
optimizing an objective with a series of constraints. However, existing deep reinforcement …