Transactions in GIS . vol 17 n° 2Paru le : 01/04/2013 ISBN/ISSN/EAN : 1361-1682 |
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Ajouter le résultat dans votre panierFinding optimal travel routes with uncertain cost data / Denis J. Dean in Transactions in GIS, vol 17 n° 2 (April 2013)
[article]
Titre : Finding optimal travel routes with uncertain cost data Type de document : Article/Communication Auteurs : Denis J. Dean, Auteur Année de publication : 2013 Article en page(s) : pp 159 - 181 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Navigation et positionnement
[Termes IGN] base de données localisées
[Termes IGN] calcul d'itinéraire
[Termes IGN] chemin le moins coûteux, algorithme du
[Termes IGN] coûtRésumé : (Auteur) Geospatial data analysis techniques are widely used to find optimal routes from specified starting points to specified destinations. Optimality is defined in terms of minimizing some impedance value over the length of the route – the value to be minimized might be distance, travel time, financial cost, or any other metric. Conventional analysis procedures assume that impedance values of all possible travel routes are known a priori, and when this assumption holds, efficient solution strategies exist that allow truly optimal solutions to be found for even very large problems. When impedance values are not known with certainty a priori, exact solution strategies do not exist and heuristics must be employed. This study evaluated how the quality of the solutions generated by one such heuristic were impacted by the nature of the uncertainty in the cost database, the nature of the costs themselves, and the parameters used in the heuristic algorithm. It was found that all of these factors influenced the qualities of the solutions produced by the heuristic, but encouragingly, an easily controlled parameter of the heuristic algorithm itself played the most important role in controlling solution quality. Numéro de notice : A2013-169 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1111/j.1467-9671.2012.01359.x Date de publication en ligne : 09/10/2012 En ligne : https://doi.org/10.1111/j.1467-9671.2012.01359.x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32307
in Transactions in GIS > vol 17 n° 2 (April 2013) . - pp 159 - 181[article]Geo-social model: A conceptual framework for real-time geocollaboration / Zheng Chang in Transactions in GIS, vol 17 n° 2 (April 2013)
[article]
Titre : Geo-social model: A conceptual framework for real-time geocollaboration Type de document : Article/Communication Auteurs : Zheng Chang, Auteur ; Songnian Li, Auteur Année de publication : 2013 Article en page(s) : pp 182 - 205 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique web
[Termes IGN] cadre conceptuel
[Termes IGN] données localisées 3D
[Termes IGN] données localisées des bénévoles
[Termes IGN] ontologie
[Termes IGN] organisation du travail
[Termes IGN] synchronisation
[Termes IGN] système multi-agents
[Termes IGN] temps réelRésumé : (Auteur) Synchronous geocollaboration helps geographically dispersed people to work together in a shared geospatial environment. Its real-time nature, multiple users' interaction and diversity of work context impose some special social, organizational and technological requirements, making the development of such real-time geocollaboration systems a challenging task. A conceptual framework is therefore needed to specify and describe what synchronous geocollaboration is, considering its social, spatial and technical aspects. The geo-social model presented in this article describes a conceptual framework for synchronous geocollaboration systems addressing the above aspects, identifies the core elements of the system and describes how these elements collaborate with each other. This model is presented using application-level ontology and is then applied to a multi-agent system based prototype in which multiple users can interact and negotiate in a shared 3D geospatial environment. Numéro de notice : A2013-170 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/SOCIETE NUMERIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1111/j.1467-9671.2012.01352.x Date de publication en ligne : 09/10/2012 En ligne : https://doi.org/10.1111/j.1467-9671.2012.01352.x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32308
in Transactions in GIS > vol 17 n° 2 (April 2013) . - pp 182 - 205[article]The basic formal ontology as a reference framework for modeling the evolution of administrative units / Felix Gantner in Transactions in GIS, vol 17 n° 2 (April 2013)
[article]
Titre : The basic formal ontology as a reference framework for modeling the evolution of administrative units Type de document : Article/Communication Auteurs : Felix Gantner, Auteur ; Bettina Waldvogel, Auteur ; et al., Auteur Année de publication : 2013 Article en page(s) : pp 206 - 226 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique
[Termes IGN] division administrative
[Termes IGN] données spatiotemporelles
[Termes IGN] gestion des connaissances (organisation)
[Termes IGN] ontologie
[Termes IGN] SuisseRésumé : (Auteur) In information systems, ontologies promise advantages such as enhanced interoperability, knowledge sharing, and integration of data sources. In this article, we show that the upper ontology Basic Formal Ontology can facilitate the modeling of an evolution of administrative units. This is demonstrated by creating a spatiotemporal ontology for the administrative units of Switzerland. The ontology tackles the problem that the geometric data is typically captured by taking snapshots at regular intervals while the thematic data is continually updated. The ontology presented merges time-stamped geometries with a formally described history of administrative units, allowing for complex spatiotemporal queries neither standard approach would support. The resulting populated knowledge base was evaluated against a set of spatiotemporal test queries. The evaluation showed that this knowledge base supports a wide range of queries on the evolution of the administrative units of Switzerland between 1960 and 2010. Numéro de notice : A2013-171 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1111/j.1467-9671.2012.01356.x Date de publication en ligne : 06/11/2012 En ligne : https://doi.org/10.1111/j.1467-9671.2012.01356.x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32309
in Transactions in GIS > vol 17 n° 2 (April 2013) . - pp 206 - 226[article]Low altitude aerial photography applications for digital surface models creation in archaeology / José-Angel Martinez-Del-Pozo in Transactions in GIS, vol 17 n° 2 (April 2013)
[article]
Titre : Low altitude aerial photography applications for digital surface models creation in archaeology Type de document : Article/Communication Auteurs : José-Angel Martinez-Del-Pozo, Auteur ; Enrique Cerillo-Cuenca, Auteur ; Ernesto Salas-Tovar, Auteur Année de publication : 2013 Article en page(s) : pp 227 - 246 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques
[Termes IGN] acquisition d'images
[Termes IGN] archéologie aérienne
[Termes IGN] fiabilité des données
[Termes IGN] hauteur de vol
[Termes IGN] image aérienne
[Termes IGN] image multitemporelle
[Termes IGN] modèle numérique de surface
[Termes IGN] similitudeRésumé : (Auteur) Low Altitude Aerial Photography (LAAP) is based on the use of small flying platforms to take photographs from very low altitudes. The acquisition of series of Digital Surface Models (DSMs) and orthoimages through photogrammetric and orthorectification processes is one of the main applications. The use of this technique in archaeological sites provides very precise and valuable data, but knowing the reliability of the method is a key to ensuring that the results are valid, since the repeatability of the method is fundamental to multitemporal studies. The present work shows an analysis of the similarity of DSMs obtained from different stereoscopic pairs from the same area. The reliability of the models has been assessed by calculating the Standard Deviation (STD) of the altitude values from the models, to obtain maps displaying the differences among them. Finally, the STD values' spatial distribution has been studied to assess if spatial autocorrelation exists by means of the Moran's Index and Anselin's Local Moran's Index. Results showed good similarity among the models and revealed clearly those areas where the model must be edited. Numéro de notice : A2013-172 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1111/j.1467-9671.2012.01361.x Date de publication en ligne : 06/11/2012 En ligne : https://doi.org/10.1111/j.1467-9671.2012.01361.x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32310
in Transactions in GIS > vol 17 n° 2 (April 2013) . - pp 227 - 246[article]A GIS-based site identification for the seasonal storage of solar heating: Promises and pitfalls / Timothy J. Dolney in Transactions in GIS, vol 17 n° 2 (April 2013)
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Titre : A GIS-based site identification for the seasonal storage of solar heating: Promises and pitfalls Type de document : Article/Communication Auteurs : Timothy J. Dolney, Auteur ; Richard Flarend, Auteur Année de publication : 2013 Article en page(s) : pp 247 - 266 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications SIG
[Termes IGN] chaleur
[Termes IGN] ensoleillement
[Termes IGN] Pennsylvanie (Etats-Unis)
[Termes IGN] site
[Termes IGN] stockage
[Termes IGN] système d'information géographiqueRésumé : (Auteur) This research presents the use of GIS to identify potential locations of the Seasonal Storage of Solar Heating (S3H) within the state of Pennsylvania. The S3H utilizes a large pit to store thermal energy collected during the warm months for later use in the cold months. To maximize its overall efficiency, S3H must be built where several locational parameters occur in unison: abandoned mine lands (AMLs), institutions, soil type, and land use. These parameters were mapped using GIS with potential locations identified through the application of neighborhood statistics. Potential locations were verified through the use of aerial photographs, hillshades, and site visitations. The verification process revealed spatial inaccuracies associated with the AML dataset. As a result, the horizontal positional accuracy of AMLs was tested according to the Geospatial Positioning Accuracy Standards – National Standard for Spatial Data Accuracy (NSSDA). Results indicate larger than expected positional offset for a dataset that is crucial to funding the reclamation of AMLs. Numéro de notice : A2013-173 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1111/j.1467-9671.2012.01357.x Date de publication en ligne : 22/11/2012 En ligne : https://doi.org/10.1111/j.1467-9671.2012.01357.x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32311
in Transactions in GIS > vol 17 n° 2 (April 2013) . - pp 247 - 266[article]Exploring geovisualization symbology for landscape genetics / Eoin Mac Aoidh in Transactions in GIS, vol 17 n° 2 (April 2013)
[article]
Titre : Exploring geovisualization symbology for landscape genetics Type de document : Article/Communication Auteurs : Eoin Mac Aoidh, Auteur ; Jann Th. Martinshon, Auteur ; et al., Auteur Année de publication : 2013 Article en page(s) : pp 267 - 281 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique web
[Termes IGN] gestion de la vie sauvage
[Termes IGN] interface web
[Termes IGN] paysage
[Termes IGN] peuplement végétal
[Termes IGN] population animale
[Termes IGN] symbole graphique
[Termes IGN] visualisation cartographiqueRésumé : (Auteur) Landscape genetics, which considers genetic population structure in the context of spatially referenced parameters in the surrounding landscape, has been shown to be extremely useful for wildlife management. Unfortunately its widespread uptake beyond the research community is hampered due to a lack of effective communication of usable information in a suitable format for application by stakeholders such as wildlife regulators or managers. To improve the communication of suitable information, geovisualization of results should be facilitated in a comprehensible format for stakeholders without GIS or genetic expertise. While specialist applications exist, alternative accessible solutions do not provide adequate support for the visualization of multi-attribute spatially referenced genetic population structure information. As a solution, we document our exploration for an appropriate symbology to communicate landscape genetic information through an accessible, web-based interface. A full problem description, review of available technologies, development rationale, and discussion of the symbology exploration are provided. Numéro de notice : A2013-174 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1111/j.1467-9671.2012.01349.x Date de publication en ligne : 09/10/2012 En ligne : https://doi.org/10.1111/j.1467-9671.2012.01349.x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32312
in Transactions in GIS > vol 17 n° 2 (April 2013) . - pp 267 - 281[article]Fast construction of global pyramids for very large satellite images / Longgang Xiang in Transactions in GIS, vol 17 n° 2 (April 2013)
[article]
Titre : Fast construction of global pyramids for very large satellite images Type de document : Article/Communication Auteurs : Longgang Xiang, Auteur ; Jing Chen, Auteur ; Jianya Gong, Auteur ; Zhen Zeng, Auteur Année de publication : 2013 Article en page(s) : pp 282 - 297 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s)
[Termes IGN] données multiéchelles
[Termes IGN] globe virtuel
[Termes IGN] image satellite
[Termes IGN] mise à l'échelleRésumé : (Auteur) Satellite imagery plays a critical role in recent popular Virtual Globe systems since it delivers spatially-related information in a direct and intuitive way. A satellite image may be very large in size due to large coverage, high resolution, or both, and therefore the construction of global pyramids, a core data structure of Virtual Globe, will be time-consuming if designed improperly. This article, based on the idea of divide-and-conquer, proposes an efficient algorithm, termed CGP, for the Construction of Global Pyramids, which builds global pyramids with only a single sequential scan of input imagery. By analyzing the space complexity of CGP, the memory-minimum pyramid level is derived, at which the memory requirement of CGP is minimized to a practical level, even for very large satellite images. This article also discusses a parallel implementation of CGP, which parallelizes the two main actions in CGP, thus further improving the pyramid construction performance. Both theoretical analysis and experimental results show that our approach outperforms other methods and, more importantly, this advantage increases considerably as the size of input imagery increases. Numéro de notice : A2013-175 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1111/tgis.12001 Date de publication en ligne : 05/10/2012 En ligne : https://doi.org/10.1111/tgis.12001 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32313
in Transactions in GIS > vol 17 n° 2 (April 2013) . - pp 282 - 297[article]Dracunculiasis, proximity, and risk: Analyzing the location of Guinea worm disease in a GIS / Nataniel Royal in Transactions in GIS, vol 17 n° 2 (April 2013)
[article]
Titre : Dracunculiasis, proximity, and risk: Analyzing the location of Guinea worm disease in a GIS Type de document : Article/Communication Auteurs : Nataniel Royal, Auteur Année de publication : 2013 Article en page(s) : pp 298 - 312 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Analyse spatiale
[Termes IGN] élevage
[Termes IGN] Guinée
[Termes IGN] maladie parasitaire
[Termes IGN] nomadisme
[Termes IGN] parasite (biologie)
[Termes IGN] pollution des eaux
[Termes IGN] risque sanitaire
[Termes IGN] système d'information géographique
[Termes IGN] zone à risqueRésumé : (Auteur) Dracunculus medinesis is a waterborne parasite that has afflicted human populations for millennia. It is spread to new water bodies by the travel activities of the humans it affects. This study analyzes the relationship between Guinea worm incidence and its proximity to features of the built and natural environment to identify any apparent relationships. The study examines the Tillabéri region in the country Niger where there was a reemergence in the number of cases of Guinea worm in 2003. It is found that population centers with Guinea worm infected individuals are often within two kilometers of nomadic herding routes. Numéro de notice : A2013-176 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1111/tgis.12003 Date de publication en ligne : 08/01/2013 En ligne : https://doi.org/10.1111/tgis.12003 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32314
in Transactions in GIS > vol 17 n° 2 (April 2013) . - pp 298 - 312[article]