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Mobilités à la loupe / Françoise de Blomac in DécryptaGéo le mag, n° 179 (septembre 2016)
[article]
Titre : Mobilités à la loupe Type de document : Article/Communication Auteurs : Françoise de Blomac, Auteur Année de publication : 2016 Article en page(s) : pp 10 - 11 Langues : Français (fre) Descripteur : [Vedettes matières IGN] Applications SIG
[Termes IGN] analyse spatiale
[Termes IGN] coût
[Termes IGN] mobilité urbaine
[Termes IGN] piéton
[Termes IGN] transport collectif
[Termes IGN] transport intermodalRésumé : (auteur) Les systèmes d'information géographiques sont régulièrement mobilisés pour analyser les mobilités à l'échelle d'un territoire. Passage en revue de quelques analyses originales Numéro de notice : A2016-686 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=81991
in DécryptaGéo le mag > n° 179 (septembre 2016) . - pp 10 - 11[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 286-2016071 RAB Revue Centre de documentation En réserve L003 Disponible A two-level topological model for 3D features in CityGML / Lin Li in Computers, Environment and Urban Systems, vol 59 (September 2016)
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Titre : A two-level topological model for 3D features in CityGML Type de document : Article/Communication Auteurs : Lin Li, Auteur ; Feng Luo, Auteur ; Haihong Zhu, Auteur ; Shen Ying, Auteur ; Zhigang Zhao, Auteur Année de publication : 2016 Article en page(s) : pp 11- 24 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications SIG
[Termes IGN] CityGML
[Termes IGN] contrainte de cohérence
[Termes IGN] intégrité topologique
[Termes IGN] modèle 3D de l'espace urbain
[Termes IGN] modèle topologique de données
[Termes IGN] niveau de détail
[Termes IGN] objet géographique 3D
[Termes IGN] primitive géométrique
[Termes IGN] relation topologique
[Termes IGN] relation topologique 3D
[Termes IGN] SIG 3DRésumé : (auteur) CityGML, as the standard for the representation and exchange of 3D city models, contains rich information in terms of geometry, semantics, topology and appearance. With respect to topology, CityGML adopts the XLink approach to represent topological relationships between different geometric aggregates or thematic features; however, it is limited to shared objects. This paper proposes a two-level model for representing 3D topological relationships in CityGML: high-level (semantic-level) topology between semantic features and low-level (geometric-level) topology between geometric primitives. Five topological relationships are adopted in this model: touch, in, equal, overlap and disjoint. The semantic-level topology is derived from the geometric-level topology on the basis of the shared geometric primitives. To maintain the 3D topology, topological consistency rules are presented. An Application Domain Extension, called TopoADE, is proposed for the implementation of the topological model. The TopoADE consists of three modules: Topology, Feature and Geometry. Finally, 3D city models with LoD1 to LoD4 are used to test this model. Experimentation on those data sets indicates a validation of the proposed topological model in CityGML. Numéro de notice : A2016-405 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.compenvurbsys.2016.04.007 Date de publication en ligne : 12/05/2016 En ligne : http://dx.doi.org/10.1016/j.compenvurbsys.2016.04.007 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=81228
in Computers, Environment and Urban Systems > vol 59 (September 2016) . - pp 11- 24[article]Automatic conversion of IFC datasets to geometrically and semantically correct CityGML LOD3 buildings / Sjors Donkers in Transactions in GIS, vol 20 n° 4 (August 2016)
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Titre : Automatic conversion of IFC datasets to geometrically and semantically correct CityGML LOD3 buildings Type de document : Article/Communication Auteurs : Sjors Donkers, Auteur ; Hugo Ledoux, Auteur ; Junqiao Zhao, Auteur ; Jantien E. Stoter, Auteur Année de publication : 2016 Article en page(s) : pp 547 - 569 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications SIG
[Termes IGN] généralisation sémantique
[Termes IGN] niveau de détail
[Termes IGN] système d'information géographiqueRésumé : (auteur) Although the international standard CityGML has five levels of detail (LODs), the vast majority of available models are the coarse ones (up to LOD2, i.e. block-shaped buildings with roofs). LOD3 and LOD4 models, which contain architectural details such as balconies, windows and rooms, rarely exist because, unlike coarser LODs, their construction requires several datasets that must be acquired with different technologies, and often extensive manual work is needed. In this article we investigate an alternative to obtaining CityGML LOD3 models: the automatic conversion from already existing architectural models (stored in the IFC format). Existing conversion algorithms mostly focus on the semantic mappings and convert all the geometries, which yields CityGML models having poor usability in practice (spatial analysis, for instance, is not possible). We present a conversion algorithm that accurately applies the correct semantics from IFC models and that constructs valid CityGML LOD3 buildings by performing a series of geometric operations in 3D. We have implemented our algorithm and we demonstrate its effectiveness with several real-world datasets. We also propose specific improvements to both standards to foster their integration in the future. Numéro de notice : A2016-993 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1111/tgis.12162 En ligne : http://dx.doi.org/10.1111/tgis.12162 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=83768
in Transactions in GIS > vol 20 n° 4 (August 2016) . - pp 547 - 569[article]Optimal site selection for sitting a solar park using multi-criteria decision analysis and geographical information systems / Andreas Georgiou in Geoscientific instrumentation methods and data systems, vol 5 n° 2 (July - December 2016)
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Titre : Optimal site selection for sitting a solar park using multi-criteria decision analysis and geographical information systems Type de document : Article/Communication Auteurs : Andreas Georgiou, Auteur ; Dimitrios Skarlatos, Auteur Année de publication : 2016 Article en page(s) : pp 321 - 332 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications SIG
[Termes IGN] analyse multicritère
[Termes IGN] Chypre
[Termes IGN] énergie renouvelable
[Termes IGN] parc solaire photovoltaïqueRésumé : (auteur) Among the renewable power sources, solar power is rapidly becoming popular because it is inexhaustible, clean, and dependable. It has also become more efficient since the power conversion efficiency of photovoltaic solar cells has increased. Following these trends, solar power will become more affordable in years to come and considerable investments are to be expected. Despite the size of solar plants, the sitting procedure is a crucial factor for their efficiency and financial viability. Many aspects influence such a decision: legal, environmental, technical, and financial to name a few. This paper describes a general integrated framework to evaluate land suitability for the optimal placement of photovoltaic solar power plants, which is based on a combination of a geographic information system (GIS), remote sensing techniques, and multi-criteria decision-making methods.
An application of the proposed framework for the Limassol district in Cyprus is further illustrated. The combination of a GIS and multi-criteria methods produces an excellent analysis tool that creates an extensive database of spatial and non-spatial data, which will be used to simplify problems as well as solve and promote the use of multiple criteria. A set of environmental, economic, social, and technical constrains, based on recent Cypriot legislation, European's Union policies, and expert advice, identifies the potential sites for solar park installation. The pairwise comparison method in the context of the analytic hierarchy process (AHP) is applied to estimate the criteria weights in order to establish their relative importance in site evaluation. In addition, four different methods to combine information layers and check their sensitivity were used. The first considered all the criteria as being equally important and assigned them equal weight, whereas the others grouped the criteria and graded them according to their objective perceived importance. The overall suitability of the study region for sitting solar parks is appraised through the summation rule.
Strict application of the framework depicts 3.0 % of the study region scoring a best-suitability index for solar resource exploitation, hence minimizing the risk in a potential investment. However, using different weighting schemes for criteria, suitable areas may reach up to 83 % of the study region. The suggested methodological framework applied can be easily utilized by potential investors and renewable energy developers, through a front end web-based application with proper GUI for personalized weighting schemes.Numéro de notice : A2016-941 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.5194/gi-5-321-2016 Date de publication en ligne : 26/07/2016 En ligne : http://dx.doi.org/10.5194/gi-5-321-2016 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=83412
in Geoscientific instrumentation methods and data systems > vol 5 n° 2 (July - December 2016) . - pp 321 - 332[article]Interactive discovery of sequential patterns in time series of wind data / Norhakim Yusof in International journal of geographical information science IJGIS, vol 30 n° 7- 8 (July - August 2016)
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Titre : Interactive discovery of sequential patterns in time series of wind data Type de document : Article/Communication Auteurs : Norhakim Yusof, Auteur ; Raul Zurita-Milla, Auteur ; Menno-Jan Kraak, Auteur ; Bas Retsios, Auteur Année de publication : 2016 Article en page(s) : pp 1486 - 1506 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications SIG
[Termes IGN] carte interactive
[Termes IGN] direction
[Termes IGN] météorologie
[Termes IGN] vent
[Termes IGN] visualisation de données statistiques
[Termes IGN] vitesseRésumé : (Auteur) Wind speed and direction vary over space and time due to the interactions between different pressures and temperature gradients within the atmospheric layers. Near the earth’s surface, these interactions are modulated by topography and artificial structures. Hence, characterizing wind behaviour over large areas and long periods is a complex but essential task for various energy-related applications. In this study, we present a novel approach to discover wind patterns by integrating sequential pattern mining and interactive visualization techniques. The approach relies on the use of the Linear time Closed pattern Miner sequence algorithm in conjunction with a time sliding window that allows the discovery of all sequential patterns present in the data. These patterns are then visualized using integrated 2D and 3D coordinated multiple views and visually explored to gain insight into the characteristics of the wind from a spatial, temporal and attribute (type of wind pattern) point of view. This proposed approach is used to analyse 10 years of hourly wind speed and direction data for 29 weather stations in the Netherlands. The results show that there are 15 main sequential patterns in the data. The spatial task shows that weather stations located in the same region do not necessarily experience similar wind pattern. For within the selected time interval, similar wind patterns can be observed in different stations and in the same station at different times of occurrence. The attribute task discovered that the repetitive occurrences of chosen pattern indicate as regular wind behaviour at different weather stations that persisted continuously over time. The results of these tasks show that the proposed interactive discovery facilitates the understanding of wind dynamics in space and time. Numéro de notice : A2016-316 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/13658816.2015.1135928 En ligne : http://dx.doi.org/10.1080/13658816.2015.1135928 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=80936
in International journal of geographical information science IJGIS > vol 30 n° 7- 8 (July - August 2016) . - pp 1486 - 1506[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 079-2016042 RAB Revue Centre de documentation En réserve L003 Disponible 079-2016041 RAB Revue Centre de documentation En réserve L003 Disponible vol 117 - July 2016 - Multi-dimensional modeling, analysis and visualization (Bulletin de ISPRS Journal of photogrammetry and remote sensing) / Eric GuilbertPermalinkAn evaluation of unsupervised and supervised learning algorithms for clustering landscape types in the United States / Jochen Wendel in Cartography and Geographic Information Science, Vol 43 n° 3 (June 2016)PermalinkL’archéogéographie : pourquoi ? Comment ? : Entretien avec Hélène Noizet et Sandrine Robert / Joëlle Burnouf in EchoGeo, n° 36 (avril - juin 2016)PermalinkLa ville intelligente / Hubert d' Erceville in SIGmag, n° 9 (juin 2016)PermalinkLe SITG fête ses vingt-cinq ans / Anonyme in Géomatique expert, n° 110 (mai - juin 2016)PermalinkUtilisation de SIG pour l'étude de la diffusion spatiale des métaux lourds : cas de la décherge contrôlée de jebel Chakir (Tunisie) / Fethi Bouzayania in Géomatique expert, n° 110 (mai - juin 2016)PermalinkModélisation et cartographie du risque d’éclosion d’incendie de forêt dans le nord-ouest du Maroc (région de Chefchaouen-Ouazzane) / Fouad Assali in Revue d'écologie, vol 71 n° 2 (avril - juin 2016)PermalinkOptimisation d'un service d'autopartage de véhicules électriques / Amine Ait-Ouahmed in Revue internationale de géomatique, vol 26 n° 2 (avril - juin 2016)PermalinkBIM-GIS, une convergence annoncée / Anonyme in Géomatique expert, n° 109 (mars - avril 2016)PermalinkDes citoyens en observateurs de la biodiversité / Xavier Fodor in SIGmag, n° 8 (mars 2016)Permalink