Hu Qin

The Pickup and Delivery Problem with Time Windows and Incompatibility Constraints in Cold Chain Transportation

  • Faheng Deng
  • Hu Qin
  • Jiliu Li
  • Chun Cheng
    • Categories Applications - OR and Management Sciences, Transportation Tags , , , ,

    This study investigates a new variant of the pickup and delivery problem with time windows (PDPTW) applied in cold chain transportation, which quantifies the effect of time on the quality of perishable products. Multiple commodities with incompatibility constraints are considered, where some types of products cannot be transported in a vehicle simultaneously due to their … Read more

    An Exact Algorithm for the Two-echelon Vehicle Routing Problem with Drones

  • Hang Zhou
  • Hu Qin
  • Chun Cheng
  • Louis-Martin Rousseau
    • Categories Applications - OR and Management Sciences, Transportation Tags , ,

    This paper studies a new variant of the vehicle routing problem with drones, i.e., the two-echelon vehicle routing problem with drones, where multiple vehicles and drones work collaboratively to serve customers. Drones can perform multiple back-and-forth trips when their paired vehicle stops at a customer node, forming a two-echelon network. Several practical constraints such as … Read more