Growing urban last-mile delivery demand and low-carbon transition pressures motivate the coordinated use of unmanned aerial vehicles (UAVs) and unmanned ground vehicles (UGVs). This study develops a two-echelon collaborative delivery model with intermediate transshipment, jointly considering customer allocation, UAV tr...
Shu-Kang Zheng, Chang-Jiang Zheng, Gen-Hua Ma et al.· Sustainability· 0 citations
The findings suggest that hard carbon budgets can be controlled in expectation online at modest cost—a step toward operator-facing low-carbon logistics whose average emissions honour a binding carbon budget, though external validation on operational data and a risk-sensitive formulation that upgrades this average contr...
Shu-Kang Zheng, Genhua Ma, Hanpei Yang et al.· Applied Sciences· 0 citations
Truck–UAV collaborative delivery can improve last-mile logistics efficiency, but fixed-node rendezvous often causes waiting loss and service delay. To address this problem, this paper proposes a route optimization method integrating en route synchronization, pseudo-node insertion, and GAT-PPO. Pseudo-nodes are generate...
Shu-Kang Zheng, Gen-Hua Ma, Hanpei Yang et al.· Applied Sciences· 0 citations
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