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Developing a grid-enabled spatial Web portal for Internet GIServices and geospatial cyberinfrastructure / T. Zhang in International journal of geographical information science IJGIS, vol 23 n° 5 (may 2009)  

Public [article]  inInternational journal of geographical information science IJGIS > vol 23 n° 5 (may 2009) . - pp 605 - 630 Titre : Developing a grid-enabled spatial Web portal for Internet GIServices and geospatial cyberinfrastructure Type de document : Article/Communication Auteurs : T. Zhang, Auteur ; M.H. Tsou, Auteur Année de publication : 2009 Article en page(s) : pp 605 - 630 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique [Termes IGN] architecture de système [Termes IGN] données localisées [Termes IGN] géomatique web [Termes IGN] informatique en grille [Termes IGN] portail [Termes IGN] service web géographique Résumé : (Auteur) Geospatial cyberinfrastructure integrates distributed geographic information processing (DGIP) technology, high-performance computing resources, interoperable Web services, and sharable geographic knowledge to facilitate the advancement of geographic information science (GIScience) research, geospatial technology, and geographic education. This article addresses three major development issues of geospatial cyberinfrastructure: the performance of grid-enabled DGIP services, the integration of Internet GIService resources, and the technical challenges of spatial Web portal implementation. A four-tier grid-enabled Internet GIService framework was designed for geospatial cyberinfrastructure. The advantages of the grid-enabled framework were demonstrated by a spatial Web portal. The spatial Web portal was implemented based on current available Internet technologies and utilizes multiple computing resources and high-performance systems, including local PC clusters and the TeraGrid. By comparing their performance testing results, we found that grid computing (TeraGrid) is more powerful and flexible than local PC clusters. However, job queuing time and relatively poor performance of cross-site computation are the major obstacles of grid computing for geospatial cyberinfrastructure. Detailed analysis of different computational settings and performance testing contributes to a deeper understanding of the improvements of DGIP services and geospatial cyberinfrastructure. This research demonstrates that resource/service integration and performance improvement can be accomplished by deploying the new four-tier grid-enabled Internet GIService framework. This article also identifies four research priorities for developing geospatial cyberinfrastructure: the design of GIS middleware, high-performance geovisualization methods, semantic GIService, and the integration of multiple GIS grid applications. Copyright Taylor & Francis Numéro de notice : A2009-300 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/13658810802698571 En ligne : https://doi.org/10.1080/13658810802698571 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29930 [article]

Exemplaires(2)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
079-09031	RAB	Revue	Centre de documentation	En réserve L003	Disponible
079-09032	RAB	Revue	Centre de documentation	En réserve L003	Disponible

Integrated mobile GIS and wireless internet map servers for environnemental monitoring and management / M.H. Tsou in Cartography and Geographic Information Science, vol 31 n° 3 (July 2004)  

Public [article]  inCartography and Geographic Information Science > vol 31 n° 3 (July 2004) . - pp 153 - 165 Titre : Integrated mobile GIS and wireless internet map servers for environnemental monitoring and management Type de document : Article/Communication Auteurs : M.H. Tsou, Auteur Année de publication : 2004 Article en page(s) : pp 153 - 165 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Systèmes d'information géographique [Termes IGN] cartographie par internet [Termes IGN] logiciel [Termes IGN] matériel informatique [Termes IGN] récepteur GPS [Termes IGN] réseau local (informatique) [Termes IGN] serveur cartographique (programme) [Termes IGN] SIG nomade [Termes IGN] système de numérisation mobile [Termes IGN] télécommunication sans fil Résumé : (Auteur) With the progress of mobile GIS technology, there is a great potential for adopting wireless communications and Internet mapping services for regional environmental management programs and natural habitat conservation. This paper provides an overview of a NASA-funded research project that focuses on the development of mobile GIS tools and wireless Internet Map Server (IMS) services to facilitate environmental monitoring and management tasks. By developing and testing wireless web-based map/image servers, mobile GIS applications, and global positional systems (GPS), this research created an integrated software/hardware infrastructure for a prototype mobile GIS application. The mobile GIS prototype allows multiple resource managers and park rangers to access large-size, remotely sensed images and GIS layers from a portable web server mounted in a vehicle. Users can conduct real-time spatial data updates and/or submit changes back to the web server over the wireless local area network (WLAN). This paper discusses in general the major components of mobile GIS, their current technological limitations, and potential problems during implementation. Key research agenda for mobile GIS are identified with suggestions for future research and development. Numéro de notice : A2004-178 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE Nature : Article DOI : 10.1559/1523040042246052 En ligne : https://doi.org/10.1559/1523040042246052 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26705 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
032-04031	RAB	Revue	Centre de documentation	En réserve L003	Disponible