The availability of relatively cheap small jet planes has lead to the creation of on-demand air transportation services in which travelers call a few days in advance to schedule a flight. A successful on-demand air transportation service requires an effective scheduling system to construct minimum cost pilot and jet itineraries for a set of accepted transportation requests. We present an intege...

Abstract Many of air cargo companies adapt the hub-and-spokes system where economies of scale exist in the transportation cost. In this paper, we formulate economies of scale using nonlinear cost function of distances and demands, and analyze how the change of the transportation cost affects single hub location of air cargo using the generalized Weber problem on the regular demand points of one...

Modelling, simulation, and forecasting offer a means of facilitating better planning decision-making. These quantitative approaches can add value beyond traditional methods that do not rely on data are particularly relevant for public transportation. Lagos is experiencing rapid urbanization currently has population just under 15 million. Both long waiting times uncertain travel driven many peop...

The low carbon development is the important trend of Chinese urbanism, and the gap between transportation infrastructure resource and travel demand induces to the transportation problems, such as congestion, energy, and safety. There is a missing connection with the Demand-Oriented Planning and Low-Carbon-Oriented Planning, since most of our discussion in the Urban Comprehensive Planning Procee...

Contemporary innovations in freight transportation and logistics are instrumental achieving more integrated, efficient, sustainable services the global market. While much attention is going to how contemporary innovations, including technology-enabled management change supply of services, little work done on depicting their changing relationship with demand. We present findings from a comprehen...

We describe competition over space between a competitive shipping industry (truck-barge) and one with market power (the railroad). The latter prices so as to "beat the competition" in equilibrium, or else at the monopoly price, if that is lower. The monopoly price rises more slowly than do the costs of transportation (freight absorption) if the spatial demand at each point is log-concave. With ...