A Comparison of Multiobjective Spatial Dispersion Models for Managing Critical Assets in Urban Areas

The spatial management of critical assets is an important element of sustainable infrastructure systems. The decision of where to site critical assets is a complex process, often involving multiple conflicting objectives such as maximizing protection versus maximizing access. An important protection design consideration for managing critical assets involves dispersing them such that they are separated from each other. This paper explores several multi-objective models that incorporate the p-dispersion model, which maximizes the minimum inter-asset distance, with other facility location objectives relevant for siting critical assets. The study describes and analyzes trade-offs and computational times of four multi-objective models with siting applications across Orlando, Florida. Results show that even though the p-dispersion problem is notoriously difficult to solve, conspicuous trade-off gains are permitted to max-min-min dispersion against other access, coverage, and protection objectives. In terms of both resulting computational times and trade-off curves, the p-center problem performed the worst while a variant of the p-maxian performed the best. The p-median provided slower computational times, but provided a more ‘kinked’ trade-off curve than the maximal-covering problem.

• Supplemental Notes:
  • This paper was sponsored by TRB committee ABC40 Transportation Asset Management
• Corporate Authors:

  Transportation Research Board

  500 Fifth Street, NW
  Washington, DC  United States  20001
• Authors:
  • Maliszewski, Paul J
  • Kuby, Michael J
  • Horner, Mark W
• Conference:
  • Transportation Research Board 91st Annual Meeting
  • Location: Washington DC, United States
  • Date: 2012-1-22 to 2012-1-26
• Date: 2012

Language

• English

Media Info

• Media Type: Digital/other
• Features: Figures; References; Tables;
• Pagination: 21p
• Monograph Title: TRB 91st Annual Meeting Compendium of Papers DVD

Subject/Index Terms

• TRT Terms: Asset management; Decision making; Disaster preparedness; Infrastructure; Spatial analysis; Urban areas
• Geographic Terms: Orlando (Florida)
• Subject Areas: Planning and Forecasting; Security and Emergencies; I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 01363753
• Record Type: Publication
• Report/Paper Numbers: 12-1195
• Files: TRIS, TRB
• Created Date: Feb 24 2012 7:20AM