2019 CSCE Annual Conference - Laval (Greater Montreal)

2019 CSCE Annual Conference - Laval (Greater Montreal) Conference


Title
MULTI-PERIOD LOCATION OPTIMIZATION OF NEW PUBLIC FACILITIES TO MAXIMIZE EQUITY IN ACCESS AND CAPACITY-SATURATION

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Author
Dr. Ali Nezhad (Presenter)
Abstract

In this paper, the multi-period facility location problem is introduced where the goal is to determine the location of new facilities over a finite time horizon so as to maximize equity, while satisfying all the demand in each time period. In the introduced model, the selection of the location of the new facilities is limited to a number of potential sites. In addition, the number of new facilities that can be opened in each time period is bounded by a budget constraint. The proposed formulation aims to optimize coverage while balancing the excess flow at capacity-saturated facilities. We propose to minimize the sum of demand-weighted travel distance to schools and the total excess flow at supplying facilities. A deterministic analysis was performed to estimate the values of all the uncertainties, including the demand in each time period. An illustrative case study on Sydney’s public school network is presented where the location of new schools is determined during a planning horizon extending over 4 years and split into 4 time periods. The proposed model provides decision makers with the needed tool to improve the provision and maximize equity in locating new public facilities over a multi-period planning horizon