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
More filters
Journal ArticleDOI
Exploring the temporal variations in accessibility to health services for older adults: A case study in Greater London
TL;DR: In this article , the authors examined walking accessibility to General Practitioners (GPs) for older people in Greater London, with a particular focus from a temporal perspective, and found that opening times have a significant impact on accessibility to health services.
Dissertation
Assessing sustainability in cities. Role of integrated transport strategies
TL;DR: In this paper, the authors focused on European cities, which are considered among the most sustainable cities in the world, but which are currently exposed to some generalized problems and threats: demographic decline, social exclusion, environmental degradation, economic decline and urban sprawl.
Journal ArticleDOI
Web-based spatiotemporal simulation modeling and visualization of tsunami inundation and potential human response
TL;DR: The framework described here utilizes tsunami simulation data and user input to generate a combined web-based visualization and simulation model of human response to tsunami inundation.
DissertationDOI
Modeling spatial accessibility for in-vitro fertility (IVF) care services in Iowa
TL;DR: The objective was to apply computational methods including a modified gravity model, techniques from spatial interaction modeling, and clustering to discover underserved areas and derive a spatial accessibility surface at the census tract level for IVF centers in Iowa.
Journal ArticleDOI
Accessibility Toolbox for R and ArcGIS
TL;DR: A new Accessibility Toolbox for R and ArcGIS is details that includes a Python tool for conducting accessibility analyses and an interactive R Notebook that enables the visualization and customization of impedance functions and parameters.
References
More filters
Journal ArticleDOI
How Accessibility Shapes Land Use
TL;DR: In this article, an empirical analysis of the residential development patterns illustrates that accessibility and the availability of vacant developable land can be used as the basis of a residential land use model.
Journal ArticleDOI
Measuring accessibility: an exploration of issues and alternatives
Susan L Handy,Debbie A. Niemeier +1 more
TL;DR: In this article, the authors provide a framework for the development of accessibility measures and two case studies suggestive of the range of possible approaches are presented, as well as issues that planners must address in developing an accessibility measure.
Journal ArticleDOI
The, Market as a Factor in the Localization of Industry in the United States
TL;DR: The Market as a Factor in the Localization of Industry in the United States is discussed in this paper, where the authors present a survey of the market as a factor in the localization of industry.
Journal ArticleDOI
Defining and Estimating a Trading Area
TL;DR: The conceptual properties of a trading area are defined and testable propositions are currently available to validate its properties and thus give precision to the definition.