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Planning toward Equal Accessibility to Services: A Quadratic Programming Approach

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  • Fahui Wang
  • Quan Tang

Abstract

In the literature various accessibility indices have been developed to assess the relative ease by which the locations of services (supply) can be reached from a residential (demand) location. In this paper we address the planning problem: how the resources can be redistributed to achieve the highest equality of accessibility to the service providers. In particular, a quadratic programming approach is used to minimize the variance of accessibility scores across demand locations by readjusting the amounts of service supplies. Two case studies—job access in Columbus, OH and primary healthcare access in Chicago, IL—are used to illustrate the method. The result suggests that in order to achieve better equality of accessibility, peripheral areas, in general, need additional supplies to compensate for their less-central locations, and some central city areas also need to add supplies to accommodate high demands by the high population density there.

Suggested Citation

  • Fahui Wang & Quan Tang, 2013. "Planning toward Equal Accessibility to Services: A Quadratic Programming Approach," Environment and Planning B, , vol. 40(2), pages 195-212, April.
    • Handle: RePEc:sae:envirb:v:40:y:2013:i:2:p:195-212
    DOI: 10.1068/b37096
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    References listed on IDEAS

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    1. Ihlanfeldt, Keith R & Sjoquist, David L, 1990. "Job Accessibility and Racial Differences in Youth Employment Rates," American Economic Review, American Economic Association, vol. 80(1), pages 267-276, March.
    2. Khan, Abdullah A., 1992. "An integrated approach to measuring potential spatial access to health care services," Socio-Economic Planning Sciences, Elsevier, vol. 26(4), pages 275-287, October.
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    Cited by:

    1. Xu, Wangtu (Ato) & Li, Yongling & Wang, Hui, 2016. "Transit accessibility for commuters considering the demand elasticities of distance and transfer," Journal of Transport Geography, Elsevier, vol. 56(C), pages 138-156.
    2. Jinguang Zhang & Yingyi Cheng & Wei Wei & Bing Zhao, 2019. "Evaluating Spatial Disparity of Access to Public Parks in Gated and Open Communities with an Improved G2SFCA Model," Sustainability, MDPI, vol. 11(21), pages 1-19, October.

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