Space-time and integral measures of individual accessibility: a comparative analysis using a point-based framework
TLDR
In this paper, the authors compare the relationship and spatial patterns of these thirty accessibility measures using network-based GIS procedures and conclude that space-time and integral indices are distinctive types of accessibility measures which reflect different dimensions of the accessibility experience of individuals.Abstract:
Conventional integral measures of accessibility, although valuable as indicators of place accessibility, have several limitations when used to evaluate individual accessibility. Two alternatives for overcoming some of the difficulties involved are explored in this study. One is to adapt these measures for evaluating individual accessibility using a disaggregate, nonzonal approach. The other is to develop different types of measures based on an alternative conceptual framework. To pursue the former alternative, this study specifies and examines eighteen gravity-type and cumulative-opportunity accessibility measures using a point-based spatial framework. For the latter option, twelve space-time accessibility measures are developed based on the construct of a prism-constrained feasible opportunity set. This paper compares the relationships and spatial patterns of these thirty measures using network-based GIS procedures. Travel diary data collected in Columbus, Ohio, and a digital data set of 10,727 selected land parcels are used for all computation. Results of this study indicate that space-time and integral indices are distinctive types of accessibility measures which reflect different dimensions of the accessibility experience of individuals. Since space-time measures are more capable of capturing interpersonal differences, especially the effect of space-time constraints, they are more “gender sensitive” and helpful for unraveling gender/ethnic differences in accessibility. An important methodological implication is that whether accessibility is observed to be important or different between individuals depends heavily on whether the measure used is capable of revealing the kind of differences the analyst intends to observe.read more
Citations
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Accessibility evaluation of land-use and transport strategies: review and research directions
Karst Teunis Geurs,Bert van Wee +1 more
TL;DR: A review of accessibility measures for assessing the usability of these measures in evaluations of land-use and transport strategies and developments is presented in this paper, using a broad range of relevant criteria, including theoretical basis, interpretability and communicability, and data requirements of the measures.
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Spatial accessibility of primary care: concepts, methods and challenges
TL;DR: Basic concepts and measurements of access are explained, some historical background is provided, the major questions concerning geographic accessibility of primary care are outlined, recent developments in GIS and spatial analysis are described, and examples of promising work are presented.
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An enhanced two-step floating catchment area (E2SFCA) method for measuring spatial accessibility to primary care physicians.
TL;DR: An enhancement of the two-step floating catchment area (2SFCA) method for measuring spatial accessibility, addressing the problem of uniform access within the catchment by applying weights to different travel time zones to account for distance decay is presented.
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Feminist Visualization: Re-envisioning GIS as a Method in Feminist Geographic Research
TL;DR: This paper explored the possibilities for critical engagement through revisiting some of the central arguments in the critical discourse from feminist perspectives, and examined whether GIS methods are inherently incompatible with feminist epistemologies through interrogating their connection with positivist scientific practices and visualization technologies.
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Population Distribution, Settlement Patterns and Accessibility across Africa in 2010.
Catherine Linard,Catherine Linard,Marius Gilbert,Robert W. Snow,Abdisalan M. Noor,Andrew J. Tatem,Andrew J. Tatem +6 more
TL;DR: Modern population count data were combined with detailed satellite-derived settlement extents to map population distributions across Africa at a finer spatial resolution than ever before, highlighting large inequities in access, the isolation of many rural populations and the challenges that exist between countries and regions in providing access to services.
References
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Journal ArticleDOI
The measurement of relative accessibility
R.S. Baxter,G. Lenzi +1 more
TL;DR: This paper presents a method of arriving at an accurate distance matrix at the urban scale using abstract network patterns incorporating the geographical constraints that obviates the need for expensive digitization and analysis of the road network as a pre-requisite in the compilation of the distance matrix.
Journal Article
Method for evaluating metropolitan accessibility
TL;DR: In this paper, the authors report on a prototypical application of a new methodology, called Special Area Analysis (SAA), designed to assess the quality of accessibility in metropolitan areas and demonstrate that the SAA methodology is a useful evaluation tool for use by metropolitan area transportation planning agencies.
Journal ArticleDOI
Locational Models for Systems of Private and Public Facilities Based on Concepts of Accessibility and Access Opportunity
TL;DR: In this paper, the authors derived ten mathematical models for the location-allocation problem in the context of nodal infrastructure facilities such as schools, kindergartens, libraries, fire stations, and waste-disposal sites.
Journal Article
Characteristics of multistop multipurpose travel: an empirical study of trip length
Morton E. O'Kelly,Eric J. Miller +1 more
TL;DR: In this article, an empirical study of the trip lengths of multistop multipurpose non-work travel is presented, where a 2-week travel diary survey of households in Hamilton, Ontario, is used.