This paper addresses a real-life public patient transportation problem derived from the Hong Kong Hospital Authority (HKHA), which provides ambulance transportation services for disabled and elderly patients from one location to another. We model the problem as a multi-trip dial-a-ride problem (MTDARP), which requires designing several routes for each ambulance. A route is a sequence of locatio...

In this paper, a quantitative model is implemented with the main goal of building decision support tool to assess feasibility applying Vehicle-To-Grid (V2G) service by company operating fleet electric buses. The proposed can calculate energy that vehicle within depot deliver back grid during periods peak demand, based on operational schedule must be guaranteed (number buses in service). After p...

This paper considers a special vehicle routing problem, the two-echelon problem with simultaneous delivery and pickup demands (2E-VRPSDP). The 2EVRPSDP differs from classic transportation problems in two ways. First, freight depot to customers is managed by shipping through intermediate satellites. Second, each customer 2E-VRPSDP may have demands. an extension of (2E-VRP) (VRPSDP). A variable n...

We introduce a new variant of the Traveling Salesman Problem inspired from applications within maritime transportation. The problem is to find a minimum cost tour of a set of ports, but includes draft limitation of some ports. This problem is henceforth referred to as the Traveling Salesman Problem with Draft Limits (TSPDL) and is an important subproblem in complex routing problems in maritime ...

In the oil supply chain, the refined petroleum products are transported by various transportation modes, such as rail, road, vessel and pipeline. The latter provides one of the safest and cheapest ways to connect production areas to local markets. This paper addresses the operational scheduling of a multi-product tree-like pipeline connecting several refineries to multiple distribution centers ...

This paper describes an agent-based platform for the allocation of loads in distributed transportation logistics, developed as a collaboration between CWI, Dutch National Center for Mathematics and Computer Science, Amsterdam and Vos Logistics Organizing, Nijmegen, The Netherlands. The platform follows a real business scenario proposed by Vos, and it involves a set of agents bidding for transpo...

Multi-echelon distribution systems are quite common in supply-chain and logistic management. They are used by public administrations in their transportation and traffic planning strategies as well as by companies to model their distribution systems. In the literature, most studies address issues related to the movement of flows throughout the system from the origins to their final destinations....

Population in cities is increasing very rapidly and hence demand of utility commodities is also increasing day by day. There is a need for the fleets of vehicles to deliver goods and material from distribution centres to local consumer locations within optimal travel distance and time. In this study, the above transportation problem have been tackled by solving the vehicle routing problem for t...

This paper describes an agent-based platform for the allocation of loads in distributed transportation logistics, developed as a collaboration between CWI, Dutch National Center for Mathematics and Computer Science, Amsterdam and Vos Logistics Organizing, Nijmegen, The Netherlands. The platform follows a real business scenario proposed by Vos, and it involves a set of agents bidding for transpo...