J
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Last name: JOSSELIN
First name: Didier
Actes de la conférence SAGEO'2016 - Spatial Analysis and GEOmatics
La première loi de la géographie de Waldo Tobler stipule que tous les objets sont en relation mais que ceuxqui sont plus proches le sont davantage (Montello et al., 2003, Grasland, 2010). Cette relation met enévidence l'importance de l'espace géographique et particulièrement de la distance dans sa valeur et sasignification : la proximité est...
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This research work presents an extension of the Tobler's first law (TFL), that includes the metric used to measure the distance between a center and its demand points, in an optimal facility location problem framework (Hakimi, 1964). It provides a short overview of the works derived from the TFL and opens on the definition of a second law, less...
This research work presents an extension of the Tobler's first law (TFL), that includes the metric used to measure the distance between a center and its demand points, in an optimal facility location problem framework (Hakimi, 1964). It provides a short overview of the works derived from the TFL and opens on the definition of a second law, less...
National audience
Ce portfolio présente 11 productions exemplaires de l'UMR ESPACE et les grandes fonctions du laboratoire : avancées dans la connaissance scientifique, formation par et pour la recherche, diffusion des connaissances, notamment.
Ce document a été présenté au comité du visite du HCERES en décembre 2022 et présente de manière synthétique l'activité du laboratoire sur la période [2016-2022].
Ce document est extrait du Dossier d'Auto-Evaluation soumis pour évaluation au HCERES le 15 juin 2022. Il couvra la période 2016-2022.
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International audience
International audience
This papers proposes to combine several downscaling processes based on expert knowledge and objective functions from Operations Research to fill a table of social data about illiteracy in the USA during the Thirties.
International audience
International audience
GEOBIA has to deal with several issues which can be considered as "burning research questions, research need and outlook" as expressed in the book edited by T. Blaschke, S. Lang and G. J. Hay in 2008 [2]. Related to quality in a general meaning, one of them is the reliability of the statistics used to find the correct objects boundaries, that...
National audience
Natural images, which are filled with intriguing stimuli of spatial objects, represent our cognition and are rich in spatial information. Accurate extraction of spatial objects is challenging due to the associated spatial and spectral complexity. In this paper, we tackle the problem of spatial object extraction in a GEOgraphic Object Based...
Ce papier est une étude d'un cas réel de localisation d'équipement collectif. Nous reprenons l'étude commandée par la collectivité à un prestataire afin de choisir le meilleur candidat parmi six pour accueillir un centre de traitement des déchets. La méthode utilisée, qui fournit un vainqueur indiscutable est étudiée. Des méthodes alternatives...
Un transport à la demande (Ambrosino et al. 2004) est qualifié de dynamique lorsqu'il ne nécessite pas de procédure lourde de réservation. La réservation est en effet généralement considérée comme le talon d'Achille de ce type de transport face aux lignes régulières, pour lesquelles la fixité des horaires et des arrêts permet un lien spontané...
National audience
Our contribution involves the transport modelling. It aims to identify and to illustrate what are the available levers to provide coherent and massive flows, which are favorable to public transportation supply and more precisely to Demand Responsive Transport systems. Three main levers are discussed : - the first one involves the urban...
In this paper we deal with different metrics using L p norms in the 1‐facility location problem and their properties. We propose to revisit the problem of optimal center location by discussing the properties of three well-known centers in 2‐dimensional space: the 1‐median for L 1 , the 1‐center (Chebyshev center) for L ∞ and the gravity center...
General access to automobile speed has enabled the separation between the places of life, in particular between the house and the place of work. In return, people are now addicted to this speed. Without speed, it is often impossible to perform the everyday life within the limits of a fixed travel-time. With the beginning of a stagnation or even...