In this article we introduce and implement a branch-and-cut-and-price algorithm for the Multiple Depot Vehicle Routing Problem with Stochastic Demands. We consider the delivery of a common commodity to a set of customers from a set of non-capacitated depots. The demand of each customer is described by a random variable, whose actual value becomes known upon arrival at the customer. The deliveri...

With more and more vehicles equipped with GPS tracking devices, there is increasing interest in building and updating maps using vehicular GPS traces. Most existing approaches for building maps rely on position traces from highly accurate positioning devices, which are sampled at a high frequency, e.g., every second. Typically these traces are recorded by survey vehicles. Commodity GPS devices ...

In this paper, we present a new framework for simulating inter-vehicle communication. In this framework, we apply a commodity-based kinematic wave model for simulating traffic dynamics and network simulator 2 (NS-2) for the corresponding communication events. We demonstrate the feasibility of this framework with simulation results for inter-vehicle communication among individual vehicles and al...

OBJECTIVE To investigate differences in the incidence of motor vehicle crashes (MVCs) and violations among drivers with multiple sclerosis (MS) when cognitive impairment is present. DESIGN Archival evaluation of Department of Motor Vehicles (DMV) records. SETTING Medical rehabilitation research organization. PARTICIPANTS Community-dwelling drivers, 27 subjects with documented MS (14 MS wi...