Search Results for: environment

Source: Adapted from the Ellen MacArthur Foundation. The conventional organization of supply chains is linear, involving a sequence from suppliers, manufacturers, and distributors to the user. Despite the perceived efficiency of manufacturing and freight distribution, the consumption and use of material goods are associated with high waste levels. More than half

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.

Author: Dr. Jean-Paul Rodrigue Logistic zones are a grouping of activities related to freight distribution such as distribution centers, transportation, and supporting services within a defined and often planned area. 1. The Clustering of Logistics Logistics tend to agglomerate at specific locations, mainly because of the accessibility they confer, the

Authors: Dr. Jean-Paul Rodrigue The North American economy is articulated along major corridors that connect commercial gateways to their hinterlands. 1. The Spatial Structure of Corridors Transport corridors are considered the backbones of transportation networks, linking major gateways and hubs through a convergence of freight and passenger flows. Most often,

Criteria Issues Goals Mitigate congestion and demand along high density interurban corridors. Extending services into lower density regions for political purposes (e.g. social equity) commonly lead to economic failure. Spatial structure Limited impacts on the spatial structure. HSR routes supporting the existing spatial structure are the most effective. Limited number

Author: Dr. Jean-Paul Rodrigue High speed rail refers to passenger rail systems running at operational speed between 200 and 300 km/h, and above in some cases. 1. High Speed Rail Networks Although trains could reach 200 km/hr by the beginning of the 20th century, operational speeds rarely surpassed 130 km/hr.

Year “Triple E Class” “E Class” (Emma Maersk) “S Class” (Sovereign Maersk) Capacity (TEU) 18,000 14,500 8,400 Length (meters) 400 393 348 Width (meters) 59 56 43 Draft (meters) 15.5 15.5 14 Deadweight (tons) 165,000 156,900 105,000 Speed (knots) 23 (19 optimal) 25.5 25 The threshold for containerized maritime shipping

Author: Dr. Jean-Paul Rodrigue Bottlenecks impose delays and restrictions in the normal flow of transportation and can be related to infrastructure, regulations or operations. 1. Transport Bottlenecks The formation of bottlenecks is the outcome of three factors that can be individual or concomitant, for complex bottlenecks: The effects of bottlenecks

Author: Dr. Jean-Paul Rodrigue Petroleum remains a strategic resource in the global economy, underlining the challenges of producing and transporting oil. [TO BE UPDATED] 1. Petroleum Very few commodities have become as vital as petroleum since it can be used as a source of energy and a raw material in