The role of central places in exposure segregation

Andrew Renninger, Mateo Neira, Elsa Arcaute
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Abstract

Here we show that "exposure segregation" - the degree to which individuals of one group are exposed to individuals of another in day-to-day mobility - is dependent on the structure of cities, and the importance of downtowns in particular. Recent work uses aggregated data to claim that the location of amenities can inhibit or facilitate interactions between groups: if a city is residentially segregated, as many American cities are, then amenities between segregated communities should encourage them to mix. We show that the relationship between "bridging" amenities and socio-economic mixing breaks down when we examine the amenities themselves, rather than the urban aggregates. For example, restaurants with locations that suggest low expected mixing do not, much of the time, have low mixing: there is only a weak correlation between bridging and mixing at the level of the restaurant, despite a strong correlation at the level of the supermarket. This is because downtowns - and the bundle of amenities that define them - tend not to be situated in bridge areas but play an important role in drawing diverse groups together.
中心场所在暴露隔离中的作用
在这里,我们展示了 "暴露隔离"--一个群体的个体在日常流动中与另一个群体的个体接触的程度--取决于城市结构,尤其是市中心的重要性。最近的研究利用综合数据声称,便利设施的位置可以抑制或促进群体间的互动:如果一个城市像许多美国城市那样存在居住隔离,那么隔离社区之间的便利设施应该鼓励他们混合。我们的研究表明,当我们研究便利设施本身而不是城市总量时,"桥梁 "便利设施与社会经济混合之间的关系就会被打破。例如,餐馆的位置表明预期混合程度较低,但在很多情况下,混合程度并不低:尽管在超市层面上存在很强的相关性,但在餐馆层面上,"桥梁 "设施与混合程度之间只有很弱的相关性。这是因为市中心--以及决定市中心的一系列便利设施--往往并不位于桥区,而是在吸引不同群体聚集方面发挥着重要作用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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