施設までの距離に着目した線分都市におけるQuintile Share Ratioの導出  [in Japanese] Quintile Share Ratio in a linear city with one and two facilities  [in Japanese]

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Abstract

本稿では,所得や富の偏りの度合いを表す尺度として用いられるQSR(Quintile Share Ratio)に着目し,都市における施設配置を公平性の観点から評価する.QSRは,「所得が高い上位二割の人口が占有する所得の総計を,所得が低い下位二割の人口が占有する所得の総計で除したもの」として定義される.線分状の都市に施設が一つおよび二つ存在する状況を想定し,住民の施設までの距離に着目し,QSRを施設位置の関数として解析的に導出する.さらに,それぞれ一つずつ施設をもつ隣接する線分都市同士が合併する状況をモデル化し,それぞれの施設の位置や合併前の都市の長さに応じて,合併後のQSRが合併前と比較して,どのように変化するかを示す.

We focus on the inequality measure “Quintile Share Ratio (QSR)” and applies QSR to evaluate inequality in distances to facilities in a linear city. QSR is an inequality measure of income distribution defined as “the ratio of total income received by the 20% of the population with the highest income (top quintile) to that received by the 20% of the population with the lowest income (lowest quintile)”. We analytically derive the value of QSR in a linear city with one- and two-facility cases by focusing on the distance between demands points uniformly distributed along a city to the nearest facility. We apply the QSR to evaluate the inequality in distances to the facility where two adjacent cities are merged into one new city.

Journal

  • Journal of the City Planning Institute of Japan

    Journal of the City Planning Institute of Japan 50(3), 628-635, 2015

    The City Planning Institute of Japan

Codes

  • NII Article ID (NAID)
    130005107713
  • NII NACSIS-CAT ID (NCID)
    AN10276504
  • Text Lang
    JPN
  • ISSN
    0916-0647
  • NDL Article ID
    026822617
  • NDL Call No.
    Z3-992
  • Data Source
    NDL  J-STAGE 
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