The general formulation of the spatial interaction model is stated as Tij , which is the interaction between location i (origin) and location j (destination).Vi is the attribute of the location of origin i, Wj is the attribute of destination j, and Sij is the attribute of separation between the location
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Constructing an O/D Matrix
Constructing an origin/destination matrix requires directional flow information between a series of locations. The above figure represents movements (O/D pairs) between five locations (A, B, C, D, and E). From this graph, an O/D matrix can be built where each O/D pair becomes a cell. A value of 0 is
Representation of a Movement as a Spatial Interaction
Representing mobility as a spatial interaction involves several considerations:
Conditions for the Realization of a Spatial Interaction
A spatial interaction between location A and B can occur only if three fundamental conditions are met:
A.18 – Spatial Interactions and the Gravity Model
Author: Dr. Jean-Paul Rodrigue A spatial interaction is a realized flow of passengers or freight between an origin and a destination. It is a transport demand / supply relationship expressed over a geographical space. 1. Conditions for Spatial Flows Estimating flows between locations is a methodology of relevance to transportation.
New topic about blockchains and intermodal transportation
I tried to articulate an explanation of the implication of blockchains for intermodal transport systems. This is particularly useful for bills of lading. The giant shipping line Maersk has recently announced its partnership with IBM to develop a blockchain bill of lading system for its operations. ZIM lines is also
Continue readingDigital Intermodalism: Blockchains and Intermodal Transportation
The above figure illustrates a simple intermodal chain involving an exporter, an importer as well as the different carriers and terminals in between. It assumes one full dry container load (reefers or hazardous materials trade would generate more transactions and information). For an intermodal transportation chain to take place, a
Port of Savannah Logistics Cluster section migrated
The Port of Savannah Logistics Cluster
Continue readingPublic Preferences for Priority between the Economy and the Environment, 1984-2022
Source: Gallup News. Note: Share of respondents stating their preferences for the priority given to environmental protection matters or to economic growth matters. Refers to opinions in the United States. As economic development takes place, environmental concerns are usually on the rise, particularly in advanced economies where public preferences have shifted.
B.13 – The Containerization of Commodities
Authors: Dr. Jean-Paul Rodrigue and Dr. Theo Notteboom Containers can carry commodities such as coffee, coal or grain that used to be carried in bulk or breakbulk. 1. A New Growth Dynamics for Containerization The investigation of cargo being carried by containers appears to be underrepresented, particularly for commodities and