Transactions in GIS . vol 13 n° 1Paru le : 01/02/2009 |
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Ajouter le résultat dans votre panierIntegrated storage and querying of spatially varying data quality information in a relational spatial database / Z.M. Ghouse in Transactions in GIS, vol 13 n° 1 (February 2009)
[article]
Titre : Integrated storage and querying of spatially varying data quality information in a relational spatial database Type de document : Article/Communication Auteurs : Z.M. Ghouse, Auteur ; Matt Duckham, Auteur Année de publication : 2009 Article en page(s) : pp 25 - 42 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées
[Termes IGN] base de données relationnelles
[Termes IGN] indicateur de qualité
[Termes IGN] Oracle spatial
[Termes IGN] qualité des données
[Termes IGN] stockage de données
[Termes IGN] système de gestion de bases de données relationnelles
[Termes IGN] Victoria (Australie)Résumé : (Auteur) This article investigates a new, integrated technique for storing and retrieving spatially varying data quality information in a relational spatial database. Rather than storing global data quality statements, the system enables data quality information to be referenced to a spatial framework, individual spatial objects, or even parts of spatial objects. The integrated model, called as RDBMS for Spatial Variation in Quality (RSVQ), allows flexible storage of spatially varying data quality information, and seamless querying irrespective of the underlying storage model. RSVQ is founded on a formal model of relational databases, defining a new derived, polymorphic query operator Numéro de notice : A2009-543 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1111/j.1467-9671.2009.01142.x En ligne : https://doi.org/10.1111/j.1467-9671.2009.01142.x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30172
in Transactions in GIS > vol 13 n° 1 (February 2009) . - pp 25 - 42[article]Towards an integrated model of interoperability for Spatial Data Infrastructures / M.A. Manson in Transactions in GIS, vol 13 n° 1 (February 2009)
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Titre : Towards an integrated model of interoperability for Spatial Data Infrastructures Type de document : Article/Communication Auteurs : M.A. Manson, Auteur ; Monica Wachowicz, Auteur ; M.A. Bernabe, Auteur Année de publication : 2009 Article en page(s) : pp 43 - 67 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Infrastructure de données
[Termes IGN] implémentation (informatique)
[Termes IGN] infrastructure nationale des données localisées
[Termes IGN] interopérabilité
[Termes IGN] métadonnées
[Termes IGN] structure hiérarchique de donnéesRésumé : (Auteur) Although there is a vast literature available on interoperability models, and their respective interoperability levels, limited research has been carried out on the development of interoperability models for the implementation of Spatial Data Infrastructures. This article demonstrates the important role of metadata elements in the formalisation of interoperability models for the implementation of Spatial Data Infrastructures. It describes an approach for designing an integrated interoperability model based on the definition of a common template that integrates seven interoperability levels. They are: technical, syntactic, semantic, pragmatic, dynamic, conceptual and organisational levels. A non-hierarchical structure is proposed to ensure the relationship among these interoperability levels. Copyright Blackwell Publishing Numéro de notice : A2009-544 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1111/j.1467-9671.2009.01143.x En ligne : https://doi.org/10.1111/j.1467-9671.2009.01143.x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30173
in Transactions in GIS > vol 13 n° 1 (February 2009) . - pp 43 - 67[article]New perspectives on the use of GPS and GIS to support a highway performance study / D. Tong in Transactions in GIS, vol 13 n° 1 (February 2009)
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Titre : New perspectives on the use of GPS and GIS to support a highway performance study Type de document : Article/Communication Auteurs : D. Tong, Auteur ; B. Coifman, Auteur ; C.J. Merry, Auteur Année de publication : 2009 Article en page(s) : pp 69 - 85 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Analyse spatiale
[Termes IGN] analyse spatiale
[Termes IGN] autoroute
[Termes IGN] Colombus (Ohio)
[Termes IGN] intégration de données
[Termes IGN] outil d'aide à la décision
[Termes IGN] performance
[Termes IGN] positionnement par GPS
[Termes IGN] système d'information géographique
[Termes IGN] trafic routierRésumé : (Auteur) In recent decades, rapid growth of travel volume has resulted in a significant increase in traffic congestion, accidents, environmental pollution and energy consumption. Accurate traffic data are drastically needed for effective evaluation of traffic systems in order to alleviate the impacts of increasing travel volume of the quality of life and economic development of urban areas. This article provides a discussion on a data acquisition methodology for highway traffic pattern recognition and congestion analysis by integrating data from the global positioning system (GPS) with a geographic information system (GIS). The GPS technology is a powerful tool in capturing continuous positioning and timing information, whereas the GIS is capable of storing, managing, manipulating, analyzing and displaying the acquired spatial information. Compared to previous studies, the effective integration of the two technologies allows for traffic analysis to be conducted at a finer resolution. The proposed method is illustrated with a case study on multiple major highway segments in Columbus, Ohio. Copyright Blackwell Publishing Numéro de notice : A2009-545 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1111/j.1467-9671.2009.01144.x En ligne : https://doi.org/10.1111/j.1467-9671.2009.01144.x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30174
in Transactions in GIS > vol 13 n° 1 (February 2009) . - pp 69 - 85[article]Simple DEM-based methods to delineate Channel networks for hydrogeomorphological mapping / K. Matsunaga in Transactions in GIS, vol 13 n° 1 (February 2009)
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Titre : Simple DEM-based methods to delineate Channel networks for hydrogeomorphological mapping Type de document : Article/Communication Auteurs : K. Matsunaga, Auteur ; T. Nakaya, Auteur ; T. Sugai, Auteur Année de publication : 2009 Article en page(s) : pp 87 - 103 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Cartographie thématique
[Termes IGN] carte géomorphologique
[Termes IGN] Chine
[Termes IGN] géomorphologie locale
[Termes IGN] loess
[Termes IGN] MNS SRTM
[Termes IGN] modèle numérique de surface
[Termes IGN] pente
[Termes IGN] plateau
[Termes IGN] pondération
[Termes IGN] réseau hydrographiqueRésumé : (Auteur) To delineate channel networks from DEMs regardless of landform type, this article proposes a new method using slope-weighted flow accumulation. To validate the method, SRTM-3, a global DEM dataset with a resolution of approximately 90 m, was used for analysis of the Loess Plateau, China. Channel networks delineated with and without slope-weighted flow accumulation were derived in both uplands and hilly lands for comparison. In the weighted flow accumulation method, the thresholds for delineating the channels were defined by detecting a turning point in the frequency distribution of the weighted flow accumulation function or by visual similarity with drainage channels extracted from topographic maps. The channel networks delineated with weighting showed closer correlation with a topographic map than the channel networks without weighting, despite the differences in thresholds. Moreover, the channel networks delineated with weighting represented the differences between landform types, while the channel networks without weighting did not. Weighting on the basis of the slope angle shows promise as a general channel delineation method which reflects the actual topography due to its hydrogeomorphological functions. Numéro de notice : A2009-546 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1111/j.1467-9671.2009.01145.x En ligne : https://doi.org/10.1111/j.1467-9671.2009.01145.x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30175
in Transactions in GIS > vol 13 n° 1 (February 2009) . - pp 87 - 103[article]Spatial modeling of geotechnical information using GML / J.P. Bardet in Transactions in GIS, vol 13 n° 1 (February 2009)
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Titre : Spatial modeling of geotechnical information using GML Type de document : Article/Communication Auteurs : J.P. Bardet, Auteur ; A. Zand, Auteur Année de publication : 2009 Article en page(s) : pp 125 - 165 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées
[Termes IGN] géomatique
[Termes IGN] GML
[Termes IGN] modèle conceptuel de données localisées
[Termes IGN] objet géographique
[Termes IGN] Royaume-Uni
[Termes IGN] XMLRésumé : (Auteur) Geotechnical data characterizes the geometry and physical properties of soil deposits, which are determined from field observations, in-situ and laboratory tests, and engineering analyses. Until now, geotechnical information was mainly described and exchanged as relational data, which occasionally included spatial characteristics. Hereafter, the spatial features of geotechnical data are investigated by invoking the geotechnical data model of the Association of Geotechnical and Geoenvironmental Specialists (AGS), which is widely used in the United Kingdom to exchange geotechnical data in engineering practice. The basic geometric objects in AGS geotechnical data are first identified. These geometric objects are mapped to basic geometric features of the Geography Markup Language (GML). AGS data can therefore be fully rendered using GML-conformant schemas, which make geotechnical data readily importable into GML-aware applications. The data can be also imported to mainstream GIS applications using Extensible Markup Language (XML) transformations. This article demonstrates the rendition of AGS data format to a GML-conformant schema and illustrates the implementation of the new format through a few geotechnical examples. Copyright Blackwell Publishing Numéro de notice : A2009-547 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1111/j.1467-9671.2008.01139.x En ligne : https://doi.org/10.1111/j.1467-9671.2008.01139.x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30176
in Transactions in GIS > vol 13 n° 1 (February 2009) . - pp 125 - 165[article]