Centre de documentation
scientifique

Dépouillements

Framework for enterprise GIS for Saudi municipalities / W. Abdulaal in International journal of geographical information science IJGIS, vol 23 n° 6 (june 2009)  

Public [article]  inInternational journal of geographical information science IJGIS > vol 23 n° 6 (june 2009) . - pp 687 - 702 Titre : Framework for enterprise GIS for Saudi municipalities Type de document : Article/Communication Auteurs : W. Abdulaal, Auteur Année de publication : 2009 Article en page(s) : pp 687 - 702 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Systèmes d'information géographique [Termes IGN] Arabie Saoudite [Termes IGN] collectivité territoriale [Termes IGN] gestion urbaine [Termes IGN] système d'information géographique Résumé : (Auteur) Municipalities in Saudi Arabia are working hard to make use of rapid advances in information technology (IT), especially geographic information systems (GIS), to improve their performance and increase their effectiveness. Most initiatives in IT applications, including GIS, are limited to individual departments rather than supporting comprehensive institutional operations. This has resulted in fragmented applications with isolated databases. It is obvious that the municipalities lack an overall framework to guide them through building reliable IT solutions that care for enterprise or corporate requirements. Because the Saudi municipalities share many commonalities, especially among their business functions and organizational structures, it is believed that a general framework is necessary to help them to develop their IT solutions in general and GIS applications in particular, because the majority of municipal decisions are spatially oriented. This article attempts to provide a framework for enterprise GIS for Saudi municipalities. It starts by reviewing the important issues associated with enterprise GIS to establish the basis for building a framework that is suitable for the Saudi context. The proposed GIS framework emphasizes the enterprise requirements for municipal institutions and considers GIS as a major IT requirement that can be supported by other related technologies. The suggested framework includes three main factors: business functions, tasks and data requirements. The integration of these factors provides the basis on which the municipalities can advance their aim of automating their functions. Discussion of these factors within Saudi context is presented with reference to the Municipality of Jeddah where data were based upon interviews with key municipal officials in 2004. The main finding of this research article is the identification of municipal functions and tasks that pave the way for determining applications required for the corporate IT solution. Furthermore, this article identifies data issues related to municipal data - sources, sharing and management - and calls for establishing a unified municipal data model. Finally, this article suggests that similarities among Saudi municipalities lead us to believe that IT applications can grow reasonably well by partnership among municipalities. Copyright Taylor & Francis Numéro de notice : A2009-313 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE Nature : Article DOI : 10.1080/13658810701378838 En ligne : https://doi.org/10.1080/13658810701378838 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29943 [article]

Exemplaires(2)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
079-09041	RAB	Revue	Centre de documentation	En réserve L003	Disponible
079-09042	RAB	Revue	Centre de documentation	En réserve L003	Disponible

A three-dimensional Douglas-Peucker algorithm and its application to automated generalization of DEMs / Fei Lifan in International journal of geographical information science IJGIS, vol 23 n° 6 (june 2009)  

Public [article]  inInternational journal of geographical information science IJGIS > vol 23 n° 6 (june 2009) . - pp 703 - 718 Titre : A three-dimensional Douglas-Peucker algorithm and its application to automated generalization of DEMs Type de document : Article/Communication Auteurs : Fei Lifan, Auteur ; Jianhua He, Auteur Année de publication : 2009 Article en page(s) : pp 703 - 718 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Photogrammétrie numérique [Termes IGN] algorithme de Douglas-Peucker [Termes IGN] données localisées 3D [Termes IGN] généralisation automatique de données [Termes IGN] généralisation de MNT [Termes IGN] modèle numérique de surface [Termes IGN] quadrillage [Termes IGN] quantité discrète Résumé : (Auteur) This article reviews the formation of the 3-D Douglas-Peucker algorithm on the basis of analyzing the nature of the 2-D algorithm and further studies the application of the 3-D method to the automated global generalization of digital elevation model (DEM). Compared to the general 3-D Douglas-Peucker algorithm put forward by the authors in the previous publication, further improvements and expansion of the algorithm have been included in this article, namely, (1) for randomly distributed points, 'loneliness index' of the current point has been taken as the dynamic weight factor of the point-plane distance, so as to improve the selection of the feature points; (2) aiming at the mass volume of the regular square grids, which forms the majority of the DEM data; three measures have been suggested in this article for the improvement of the efficiency of the automated generalization. Experiments have proven that these measures can greatly heighten the efficiency of the DEM generalization with satisfactory results and have offered us the practical possibility of on-the-fly global generalization of DEM with a huge volume of data. Copyright Taylor & Francis Numéro de notice : A2009-314 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1080/13658810701703001 En ligne : https://doi.org/10.1080/13658810701703001 Format de la ressource électronique : u Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29944 [article]

Exemplaires(2)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
079-09041	RAB	Revue	Centre de documentation	En réserve L003	Disponible
079-09042	RAB	Revue	Centre de documentation	En réserve L003	Disponible

Assessment of sliver polygons in geographical vector data / M. Delafontaine in International journal of geographical information science IJGIS, vol 23 n° 6 (june 2009)  

Public [article]  inInternational journal of geographical information science IJGIS > vol 23 n° 6 (june 2009) . - pp 719 - 735 Titre : Assessment of sliver polygons in geographical vector data Type de document : Article/Communication Auteurs : M. Delafontaine, Auteur ; G. Nolf, Auteur ; N. Van De Weghe, Auteur ; et al., Auteur Année de publication : 2009 Article en page(s) : pp 719 - 735 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Bases de données localisées [Termes IGN] couche thématique [Termes IGN] détection de changement [Termes IGN] données vectorielles [Termes IGN] erreur en position [Termes IGN] occupation du sol [Termes IGN] polygone [Termes IGN] précision des données [Termes IGN] utilisation du sol Résumé : (Auteur) As positional error is a major issue in the assessment of spatial data quality, its propagation has been studied widely in map overlaying. However, few studies deal with a manifest consequence of positional error in map overlaying, namely sliver polygons. Sliver polygons are generally treated as awkward by-products that need to be removed quickly. Nevertheless, as they represent spurious areas, their nature and properties carry useful information, for example, for land use/cover assessment. Therefore, next to sliver removal, there is a need for intelligent detection and eventually further analysis of sliver polygons. This article proposes a general, semi-automated method for the assessment of slivers in vector polygon layers. A case study in Flanders (Belgium) illustrates a possible application in area estimation evaluation of land use allocation classes. Copyright Taylor & Francis Numéro de notice : A2009-315 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE/INFORMATIQUE Nature : Article DOI : 10.1080/13658810701694838 En ligne : https://doi.org/10.1080/13658810701694838 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29945 [article]

Exemplaires(2)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
079-09041	RAB	Revue	Centre de documentation	En réserve L003	Disponible
079-09042	RAB	Revue	Centre de documentation	En réserve L003	Disponible

Classification through consultation: public views of the geography of the e-society / Paul A. Longley in International journal of geographical information science IJGIS, vol 23 n° 6 (june 2009)  

Public [article]  inInternational journal of geographical information science IJGIS > vol 23 n° 6 (june 2009) . - pp 737 - 763 Titre : Classification through consultation: public views of the geography of the e-society Type de document : Article/Communication Auteurs : Paul A. Longley, Auteur ; A. Singleton, Auteur Année de publication : 2009 Article en page(s) : pp 737 - 763 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique [Termes IGN] classification [Termes IGN] données démographiques [Termes IGN] erreur systématique [Termes IGN] géomatique web [Termes IGN] participation du public [Termes IGN] société de l'information [Termes IGN] technologies de l'information et de la communication Résumé : (Auteur) Although viewed by business and commerce as successful solutions, geodemographic profiling of neighbourhoods has attracted wide-ranging criticism in the academic literature. This paper addresses some specific concerns that arise because the derivation of classifications is rarely transparent and open to scrutiny or challenge. The substantive focus of the research reported in this paper is a nationwide geodemographic classification of how people engage with new information and communication technologies (ICTs). In response to the critique of geodemographics as a 'black box' technology, we describe how the classification was opened up to public scrutiny and how we conducted a major consultation exercise into the reliability of its results. We assess the message of the 50,000+ searches and 3952 responses collected during the consultation exercise, in terms of possible systematic errors in the shape and detail of the classification. Unusually for Internet-based surveys, we also investigate the likely reliability of the response information received and identify ways in which the outcome of consultation might be used to improve the classification. We believe that this is the first-ever large-scale consultation survey of the validity and remit of a geodemographic classification and that it may have wider implications for the creation of geodemographic classifications. Copyright Taylor & Francis Numéro de notice : A2009-316 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/13658810701704652 En ligne : https://doi.org/10.1080/13658810701704652 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29946 [article]

Exemplaires(2)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
079-09041	RAB	Revue	Centre de documentation	En réserve L003	Disponible
079-09042	RAB	Revue	Centre de documentation	En réserve L003	Disponible

A spatio-temporal ontology for geographic information integration / T. Bittner in International journal of geographical information science IJGIS, vol 23 n° 6 (june 2009)  

Public [article]  inInternational journal of geographical information science IJGIS > vol 23 n° 6 (june 2009) . - pp 765 - 798 Titre : A spatio-temporal ontology for geographic information integration Type de document : Article/Communication Auteurs : T. Bittner, Auteur ; Maureen Donnelly, Auteur ; B. Smith, Auteur Année de publication : 2009 Article en page(s) : pp 765 - 798 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Infrastructure de données [Termes IGN] données localisées [Termes IGN] information géographique [Termes IGN] intégration de données [Termes IGN] interopérabilité [Termes IGN] langage de modélisation [Termes IGN] ontologie [Termes IGN] raisonnement spatiotemporel Résumé : (Auteur) This paper presents an axiomatic formalization of a theory of top-level relations between three categories of entities: individuals, universals, and collections. We deal with a variety of relations between entities in these categories, including the sub-universal relation among universals and the parthood relation among individuals, as well as cross-categorial relations such as instantiation and membership. We show that an adequate understanding of the formal properties of such relations - in particular their behavior with respect to time - is critical for geographic information processing. The axiomatic theory is developed using Isabelle, a computational system for implementing logical formalisms. All proofs are computer verified and the computational representation of the theory is available online. Copyright Taylor & Francis Numéro de notice : A2009-317 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/13658810701776767 En ligne : https://doi.org/10.1080/13658810701776767 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29947 [article]

Exemplaires(2)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
079-09041	RAB	Revue	Centre de documentation	En réserve L003	Disponible
079-09042	RAB	Revue	Centre de documentation	En réserve L003	Disponible

On A* search with stopover areas / T. Sander in International journal of geographical information science IJGIS, vol 23 n° 6 (june 2009)  

Public [article]  inInternational journal of geographical information science IJGIS > vol 23 n° 6 (june 2009) . - pp 799 - 819 Titre : On A* search with stopover areas Type de document : Article/Communication Auteurs : T. Sander, Auteur ; P. Wehner, Auteur Année de publication : 2009 Article en page(s) : pp 799 - 819 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique [Termes IGN] calcul d'itinéraire [Termes IGN] chemin le plus court, algorithme du [Termes IGN] navigation automobile Résumé : (Auteur) Today's map navigation software offers more and more functionality. For example, it cannot only route from a start to a destination address, but the user can also specify a number of via destinations that are to be visited along the route. What is not commonly found in the software is the handling of so-called stopover areas. Here the user specifies a sequence of geographic areas and wants the route to lead into or through each of these areas (but he does not actually care where exactly). A modification of the well-known A* algorithm that considers convex stopover areas is presented. Algorithmic variants and implementation issues are discussed. Example results on a real-world data set are presented for the case of axis parallel rectangular stopover areas. Copyright Taylor & Francis Numéro de notice : A2009-318 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/13658810902885375 En ligne : https://doi.org/10.1080/13658810902885375 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29948 [article]

Exemplaires(2)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
079-09041	RAB	Revue	Centre de documentation	En réserve L003	Disponible
079-09042	RAB	Revue	Centre de documentation	En réserve L003	Disponible