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Auteur R.L. Church |
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Estimating spatial efficiency using cyber search, GIS, and spatial optimization: a case study of fire service deployment in Los Angeles County / R.L. Church in International journal of geographical information science IJGIS, vol 30 n° 3-4 (March - April 2016)
[article]
Titre : Estimating spatial efficiency using cyber search, GIS, and spatial optimization: a case study of fire service deployment in Los Angeles County Type de document : Article/Communication Auteurs : R.L. Church, Auteur ; Wenwen Li, Auteur Année de publication : 2016 Article en page(s) : pp 535 - 553 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique web
[Termes IGN] couverture (données géographiques)
[Termes IGN] évaluation
[Termes IGN] Los Angeles
[Termes IGN] lutte contre l'incendie
[Termes IGN] optimisation spatiale
[Termes IGN] précision de localisation
[Termes IGN] système d'information géographiqueRésumé : (Auteur) The efficiency of public investments and services has been of interest to geographic researchers for several decades. While in the private sector inefficiency often leads to higher prices, loss of competitiveness, and loss of business, in the public sector inefficiency in service provision does not necessarily lead to immediate changes. In many cases, it is not an entirely easy task to analyze a particular service as appropriate data may be difficult to obtain and hidden in detailed budgets. In this paper, we develop an integrative approach that uses cyber search, Geographic Information System (GIS), and spatial optimization to estimate the spatial efficiency of fire protection services in Los Angeles (LA) County. We develop a cyber-search process to identify current deployment patterns of fire stations across the major urban region of LA County. We compare the results of our search to existing databases. Using spatial optimization, we estimate the level of deployment that is needed to meet desired coverage levels based upon the location of an ideal fire station pattern, and then compare this ideal level of deployment to the existing system as a means of estimating spatial efficiency. GIS is adopted throughout the paper to simulate the demand locations, to conduct location-based spatial analysis, to visualize fire station data, and to map model simulation results. Finally, we show that the existing system in LA County has considerable room for improvement. The methodology presented in this paper is both novel and groundbreaking, and the automated assessments are readily transferable to other counties and jurisdictions. Numéro de notice : A2016--062 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/13658816.2015.1083572 En ligne : https://doi.org/10.1080/13658816.2015.1083572 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=79890
in International journal of geographical information science IJGIS > vol 30 n° 3-4 (March - April 2016) . - pp 535 - 553[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 079-2016021 RAB Revue Centre de documentation En réserve L003 Disponible Mapping transit-based access: integrating GIS, routes and schedules / T. Lei in International journal of geographical information science IJGIS, vol 24 n°1-2 (january 2010)
[article]
Titre : Mapping transit-based access: integrating GIS, routes and schedules Type de document : Article/Communication Auteurs : T. Lei, Auteur ; R.L. Church, Auteur Année de publication : 2010 Article en page(s) : pp 283 - 304 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications SIG
[Termes IGN] accessibilité
[Termes IGN] Californie (Etats-Unis)
[Termes IGN] réseau routier
[Termes IGN] système d'information géographique
[Termes IGN] transport collectifRésumé : (Auteur) Accessibility is a concept that is not entirely easy to define. Gould (1969) once stated that it is a 'slippery notion ... one of those common terms that everyone uses until faced with the problem of defining and measuring it'. Considerable research over the last 40 years has been devoted to defining and measuring accessibility, ranging from access to jobs within an hour's travel time to the ease at which given places can be reached. This article is concerned with the measurement of access provided by transit. It includes a review of past work on measuring accessibility in general and with respect to transit services in particular. From this overview of the literature, it can be seen that current methods fall short in measuring transit service access in several meaningful aspects. Based on this review and critique, we propose new refinements that can be used to help overcome some of these shortcomings. As a part of this, we define an extended GIS data structure to handle temporal elements of transit service. To demonstrate the value of these new measures, examples are presented with respect to mapping accessibility of transit services in Santa Barbara, California. Finally, we show how these measures can be used to develop a framework for supporting transit service analysis and planning. Copyright Taylor & Francis Numéro de notice : A2010-118 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/13658810902835404 En ligne : http://dx.doi.org/10.1080/13658810902835404 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30314
in International journal of geographical information science IJGIS > vol 24 n°1-2 (january 2010) . - pp 283 - 304[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 079-2010012 RAB Revue Centre de documentation En réserve L003 Disponible 079-2010011 RAB Revue Centre de documentation En réserve L003 Disponible Spatial optimization as a generative technique for sustainable multiobjective land-use allocation / A. Ligmann-Zielinska in International journal of geographical information science IJGIS, vol 22 n° 6-7 (june 2008)
[article]
Titre : Spatial optimization as a generative technique for sustainable multiobjective land-use allocation Type de document : Article/Communication Auteurs : A. Ligmann-Zielinska, Auteur ; R.L. Church, Auteur ; Piotr Jankowski, Auteur Année de publication : 2008 Article en page(s) : pp 601 - 622 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications SIG
[Termes IGN] allocation
[Termes IGN] aménagement du territoire
[Termes IGN] développement durable
[Termes IGN] modèle mathématique
[Termes IGN] optimisation (mathématiques)
[Termes IGN] répartition géographique
[Termes IGN] système d'information géographique
[Termes IGN] utilisation du sol
[Termes IGN] Washington (Etats-Unis ; état)Résumé : (Auteur) In this paper, we examine the applicability of spatial optimization as a generative modelling technique for sustainable land-use allocation. Specifically, we test whether spatial optimization can be used to generate a number of compromise spatial alternatives that are both feasible and different from each other. We present a new spatial multiobjective optimization model, which encourages efficient utilization of urban space through infill development, compatibility of adjacent land uses, and defensible redevelopment. The model uses a density-based design constraint developed by the authors. The constraint imposes a predefined level of consistent neighbourhood development to promote contiguity and compactness of urban areas. First, the model is tested on a hypothetical example. Further, we demonstrate a real-world application of the model to land-use planning in Chelan, a small environmental amenity town in the north-central region of the State of Washington, USA. The results indicate that spatial optimization is a promising method for generating land-use alternatives for further consideration in spatial decision-making. Copyright Taylor & Francis Numéro de notice : A2008-223 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/13658810701587495 En ligne : https://doi.org/10.1080/13658810701587495 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29218
in International journal of geographical information science IJGIS > vol 22 n° 6-7 (june 2008) . - pp 601 - 622[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 079-08041 RAB Revue Centre de documentation En réserve L003 Disponible 079-08042 RAB Revue Centre de documentation En réserve L003 Disponible