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Journal of International Information Management

Abstract

An Integrated Spatial Decision Support System (ISDSS) is developed for finding locations where people can access post offices with minimum travel time between their residences and the post offices and their next destinations. Location-allocation models may be used to determine sites for these transshipment nodes. Due to the nature of traffic and unstructured zoning and all other non-predictable variables, network models may not be applied to find the optimal solution. Instead a gravity model is used to find a solution, which both minimizes the number of post offices and minimizes before-and-after travel times. The result of this system is a pattern of post offices, which can gravitate more people to these sites. A DSS is designed which utilizes GIS (ArcInfo) and Oracle DBMS to attain a flexible interactive solution with What-If and Goal seeking capabilities.

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