An order picking strategy in a distribution center (DC) defines the manner in which pickers navigate the picking area to pick items from storage locations. We focus on the problem of selecting between a batch picking and a zone picking strategy. For this problem, we propose a cost model to...

Often, the carrier/shipper of hazardous materials is interested in a collection of routes with approximately the same performance so that they can switch between different routes to avoid exposing the same population and potentially as a security measure. We develop a K shortest path algorithm...

We present an optimization-based model to gain insights into the integrated inventory and transportation problem for a single-echelon, multi-facility service parts logistics system with time-based service level constraints. As an optimization goal we minimize the relevant inventory and...

This paper investigates the role of code-sharing alliances on entry deterrence. One major carrier operates a network with one hub that links n cities. It competes with another foreign carrier on one international spoke, while the other spokes are domestic and monopolized. There exists a...

This paper reports the findings of an economic evaluation of fares regulation options for Britain's railways. The evaluation is based on the development of an econometric demand model based on a large scale survey of passenger preferences. The model was applied to comprehensive case study...

We develop an aerodynamic loading assignment model for intermodal freight trains based on an integer-programming framework to help terminal managers make up more fuel-efficient trains. This is the first use of optimization modeling to address the aerodynamics and energy efficiency of railroad...

Distance and transport cost matters for international trade but which is more relevant? What impact does transport policy such as Open Sky have on cost of trade? Using US export data by air transport with 21 trading partners for 1998-2002 we first find that airfare is more significantly...

In the current paper, a departure time choice model including travel time variability is estimated, combining stated preference and revealed preference data. We account for response scale differences between RP and SP data and, applying the mixed logit model, test for correlation of scheduling...

This paper develops and demonstrates a quality control framework for bus schedule reliability. Automatic vehicle location (AVL) devices provide necessary data; data envelopment analysis (DEA) yields a valid summary measure from partial reliability indicators; and panel data analysis provides...

This paper addresses a variation of the berth allocation problem at multi-user terminals, as ships which would normally be served at the terminal but their expected wait time exceeds the time limit, are assigned to an external terminal. The objective of the problem is to minimize the total...