Modeling Transportation Network Redundancy

Dynamic modeling of the electric transportation network

– We introduce a model for the dynamic self-organization of the electric grid. The model is characterized by a conserved magnitude, energy, that can travel following the links of the network to satisfy nodes’ load. The load fluctuates in time causing local overloads that drive the dynamic evolution of the network topology. Our model displays a transition from a fully connected network to a conf...

Modeling Urban Surface Transportation Network Dependability and Security

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Spatial Modeling in Transportation

_____________________ Much of this research was conducted under support from the Navigation Economic Technologies (NETS) program of the Institute for Water Resources of the Army Corps of Engineers. We gratefully acknowledge their support and comments. We especially appreciate the comments of Keith Hofseth and Kevin Hendrickson who read early versions of this chapter and provided a number of use...

Transportation Planning and Modeling

Disaggregate Transportation Modeling

Geographic information systems (GIS) have developed in response to a range of needs, and provide highly structured environments for working with particular classes of information. The environment and structure of a GIS is defined by its data model; the paper reviews the basic data models of GIS. The needs of discrete transportation modeling have led to a number of extensions of the basic data m...