This paper investigates the Train Network Design Optimization problem arising from railroad industry which involves the integration of three inter-related decision sub-problems: train routing which is to identify origin, destination and itinerary for individual trains; block-to-train assignment...

Previous research has used reduced-form models to determine the impact of financial condition and safety investment on airline accident risk and has found limited statistical evidence. We model safety investment as a mediating variable between the financial health of an airline and its accident...

This paper considers speed and reliability, measured by the average and variance of the lead time, to examine the relevance of the latter variable on inventory costs. By using a flexible simulation framework, it is shown that reducing variability does not necessarily reduce costs and might in...

This study develops a planning and a real-time adjustment model to plan courier routes and schedules in an urban area and to adjust the planned routes in actual operations. The stochastic travel time aspect of the problem has been addressed at both the planning stage and the operation stage. A...

This paper measures and compares social efficiency of railway firms and airlines in Japan’s domestic intercity travel market. Unlike other efficiency studies, our input and output measures are more comprehensive because we incorporate the life-cycle CO2 emissions as an undesirable output and...

Quantitative market timing strategies have been traditionally tested in liquid commodity and financial futures, often with mixed results with respect to their performance. We extend this methodology to a non-storable commodity, freight, where hitherto this analysis has not been carried out. The...

This paper reviews the literature and then investigates the perception of European airline managers (from 58 airlines) with regard to entry barriers to aviation markets. We aim to identify the perceived effectiveness of entry barriers and how the perception differs across management levels,...

We develop a test for vertical collusion between airports and airlines in the case of two different scenarios. In the first scenario there is one airport and one airline; this intends to depict the case of airports that do not compete with any other one. In the second, we consider two competing...

In this paper, we propose a bi-level air transport market model which can handle the shape of network, airfare and service frequency as airline’s control variables and passenger’s behavior. We apply the model to the simple duopolistic market and observe how airlines change their network...

For companies facing challenge of managing unreliable supply sources, one of the operational goals is to increase the overall profit by improving performance of uncertain supply. We here develop stochastic decision frameworks which evaluate necessary information about uncertainties and help...