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Optimisation d'un service d'autopartage de véhicules électriques / Amine Ait-Ouahmed in Revue internationale de géomatique, vol 26 n° 2 (avril - juin 2016)
[article]
Titre : Optimisation d'un service d'autopartage de véhicules électriques Type de document : Article/Communication Auteurs : Amine Ait-Ouahmed, Auteur ; Fen Zhou, Auteur ; Didier Josselin, Auteur Année de publication : 2016 Article en page(s) : pp 211 - 235 Note générale : bibliographie Langues : Français (fre) Descripteur : [Vedettes matières IGN] Applications SIG
[Termes IGN] algorithme génétique
[Termes IGN] carte thématique
[Termes IGN] Nice
[Termes IGN] optimisation (mathématiques)
[Termes IGN] QGIS
[Termes IGN] répartition géographique
[Termes IGN] système d'information géographique
[Termes IGN] véhicule automobileRésumé : (auteur) Dans un système d'autopartage dit «à un seul sens», les utilisateurs peuvent prendre une voiture dans une station et la laisser ensuite à une autre. Ce comportement conduit généralement à une situation dans laquelle certaines stations sont pleines et d'autres vides. Le système est d'autant plus contraint que les véhicules sont électriques et qu'un temps de recharge minimal est nécessaire. Dans ce travail, nous proposons des heuristiques qui optimisent la redistribution des voitures et la gestion du service. Ces heuristiques permettent de calculer le nombre de voitures, le nombre d'agents et les différentes opérations de redistribution à réaliser sur une journée donnée. Les algorithmes proposés sont appliqués sur le réseau Auto Bleue de la ville de Nice et une cartographie est réalisée sur QuantumGlS à partir des demandes estimées. Numéro de notice : A2016-474 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.3166/RIG.26.211-235 En ligne : https://doi.org/10.3166/RIG.26.211-235 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=81486
in Revue internationale de géomatique > vol 26 n° 2 (avril - juin 2016) . - pp 211 - 235[article]A synchronization algorithm for spaceborne/stationary BiSAR imaging based on contrast optimization with direct signal from radar satellite / M. Zhang in IEEE Transactions on geoscience and remote sensing, vol 54 n° 4 (April 2016)
[article]
Titre : A synchronization algorithm for spaceborne/stationary BiSAR imaging based on contrast optimization with direct signal from radar satellite Type de document : Article/Communication Auteurs : M. Zhang, Auteur ; Robert Wang, Auteur ; Y. Deng, Auteur Année de publication : 2016 Article en page(s) : pp 1977 - 1989 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image radar et applications
[Termes IGN] amélioration du contraste
[Termes IGN] image radar moirée
[Termes IGN] optimisation (mathématiques)
[Termes IGN] radar bistatique
[Termes IGN] synchronisationRésumé : (Auteur) This paper proposes a synchronization algorithm for bistatic synthetic aperture radar (BiSAR) imaging in a spaceborne/stationary configuration. In real bistatic systems, synchronization errors are generally introduced into the received data. Additionally, the lack of precise imaging parameters, such as the position of the transmitter and the accurate sampling time, could affect the imaging quality greatly. Fortunately, the image could be well focused by the proposed algorithm in the case of lack of the accurate position of a transmitter and the sampling time. First, a preprocessing step is employed to remove synchronization errors through matching an echo signal with a direct signal. Then, a modified chirp scaling factor containing an error phase term is constructed, and the accurate position of the transmitter and the sampling time can be acquired by the phase extraction of the direct signal and the searching method based on contrast optimization. After that, the corresponding imaging process can be implemented. Finally, the proposed algorithm is validated by the simulation and experimental results, where TerraSAR-X is used as the illuminator. Numéro de notice : A2016-837 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2015.2493078 En ligne : http://dx.doi.org/10.1109/TGRS.2015.2493078 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=82881
in IEEE Transactions on geoscience and remote sensing > vol 54 n° 4 (April 2016) . - pp 1977 - 1989[article]Effect of tree location on mitigating parking lot insolation / Ivana Bajsanski in Computers, Environment and Urban Systems, vol 56 (March 2016)
[article]
Titre : Effect of tree location on mitigating parking lot insolation Type de document : Article/Communication Auteurs : Ivana Bajsanski, Auteur ; Vesna Stojakovic, Auteur ; Marko Jovanovic, Auteur Année de publication : 2016 Article en page(s) : pp 59 - 67 Note générale : bibloiographie Langues : Anglais (eng) Descripteur : [Termes IGN] changement climatique
[Termes IGN] effet d'ombre
[Termes IGN] ensoleillement
[Termes IGN] optimisation (mathématiques)
[Termes IGN] parking
[Termes IGN] urbanisme
[Vedettes matières IGN] Végétation et changement climatiqueRésumé : (auteur) Urban land used for parking lots can contribute to the effect of overheating, whereas vegetation, especially high growth vegetation (trees), can mitigate this effect. Accordingly, in this paper we propose an algorithm, the inputs to which consist of predetermined parameters of a parking lot's geometry, trees and surrounding buildings, where the shadows help to mitigate the heat. The algorithm optimizes tree locations, aiming to provide maximum overshadowing of the parking lots, while leaving the useable parking area and the parking lot shape intact. The paper focuses on parameterization of elements that are important for this analysis process as well as combinatory calculations. These combinatory calculations are based on solar simulations, which are carried out, and take into account climate and geographical data. The algorithm is applied to several cases, depicting real world examples, as well as those based on design and greening instruction manuals. The results indicate that the tree locations estimated by the algorithm increase parking lot overshadowing, indicating that the algorithm efficiently decreases the negative influence of urban overheating. Numéro de notice : A2016-393 Affiliation des auteurs : non IGN Thématique : FORET/GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.compenvurbsys.2015.11.006 Date de publication en ligne : 01/12/2015 En ligne : http://dx.doi.org/10.1016/j.compenvurbsys.2015.11.006 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=81210
in Computers, Environment and Urban Systems > vol 56 (March 2016) . - pp 59 - 67[article]Geoconcept, le géoptimisateur / Françoise de Blomac in DécryptaGéo le mag, n° 175 (mars 2016)
[article]
Titre : Geoconcept, le géoptimisateur Type de document : Article/Communication Auteurs : Françoise de Blomac, Auteur Année de publication : 2016 Langues : Français (fre) Descripteur : [Vedettes matières IGN] Systèmes d'information géographique
[Termes IGN] Geoconcept
[Termes IGN] logiciel SIG
[Termes IGN] optimisation (mathématiques)Résumé : (auteur) Début février, l'éditeur a rassemblé quelque trois cent partenaires et utilisateurs pour son Géoworld annuel. L'occasion de mesurer le chemin parcouru en vingt-cinq ans et de montrer concrètement comment "géoptimiser" ses ressources. Numéro de notice : A2016-185 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=80544
in DécryptaGéo le mag > n° 175 (mars 2016)[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 286-2016031 RAB Revue Centre de documentation En réserve L003 Disponible A land use/land cover change geospatial cyberinfrastructure to integrate big data and temporal topology / Jin Xing in International journal of geographical information science IJGIS, vol 30 n° 3-4 (March - April 2016)
[article]
Titre : A land use/land cover change geospatial cyberinfrastructure to integrate big data and temporal topology Type de document : Article/Communication Auteurs : Jin Xing, Auteur ; Renee E. Sieber, Auteur Année de publication : 2016 Article en page(s) : pp 573 - 593 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géomatique web
[Termes IGN] changement d'occupation du sol
[Termes IGN] cyberinfrastructure
[Termes IGN] dimension temporelle
[Termes IGN] données maillées
[Termes IGN] données massives
[Termes IGN] données spatiotemporelles
[Termes IGN] optimisation (mathématiques)
[Termes IGN] relation topologique
[Termes IGN] segmentation d'imageRésumé : (Auteur) Big data have shifted spatial optimization from a purely computational-intensive problem to a data-intensive challenge. This is especially the case for spatiotemporal (ST) land use/land cover change (LUCC) research. In addition to greater variety, for example, from sensing platforms, big data offer datasets at higher spatial and temporal resolutions; these new offerings require new methods to optimize data handling and analysis. We propose a LUCC-based geospatial cyberinfrastructure (GCI) that optimizes big data handling and analysis, in this case with raster data. The GCI provides three levels of optimization. First, we employ spatial optimization with graph-based image segmentation. Second, we propose ST Atom Model to temporally optimize the image segments for LUCC. At last, the first two domain ST optimizations are supported by the computational optimization for big data analysis. The evaluation is conducted using DMTI (DMTI Spatial Inc.) Satellite StreetView imagery datasets acquired for the Greater Montreal area, Canada in 2006, 2009, and 2012 (534 GB, 60 cm spatial resolution, RGB image). Our LUCC-based GCI builds an optimization bridge among LUCC, ST modelling, and big data. Numéro de notice : A2016-204 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/13658816.2015.1104534 En ligne : https://doi.org/10.1080/13658816.2015.1104534 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=79891
in International journal of geographical information science IJGIS > vol 30 n° 3-4 (March - April 2016) . - pp 573 - 593[article]Réservation
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