Search results for "graphes"
showing 10 items of 26 documents
Intégrer la connectivité paysagère dans la séquence ERC : une approche par la quantité d'habitat atteignable
2019
Des engagements nationaux, européens et internationaux ont été pris pour maintenir et restaurer la connectivité entre habitats naturels face à la perte et à la fragmentation de ces habitats. Dans le même temps, les politiques environnementales dans différents pays mettent en oeuvre la séquence Eviter-Réduire-Compenser (ERC) pour atteindre l’objectif d’absence de perte nette de biodiversité (PPN). La séquence ERC a pour principe d’évaluer l’ensemble des impacts écologiques d’un aménagement, mais les critères et indicateurs permettant de quantifier les impacts sur la connectivité paysagère ne sont pas satisfaisants. Nous proposons une démarche opérationnelle pour évaluer les impacts environne…
Le Dictionnaire de l’Académie française source des dictionnaires bilingues franco-italiens de 1871 à nos jours
2017
L'articolo si propone di sondare l'influenza del Dictionnaire de l'Académie française sulla lessicografia bilingue franco-italiana in un arco cronologico compreso tra il 1871 e il 2000. In particolare, si passano in rassegna le prefazioni dei principali dizionari bilingui pubblicati nel periodo considerato, al fine di valutare se il Dictionnaire de l'Académie venga citato tra le fonti e qual uso il lessicografo intenda farne. The article aims to explore the influence of the Dictionnaire de l'Académie française on French-Italian bilingual lexicography in a chronological arc between 1871 and 2000. In particular, the prefaces of the main bilingual dictionaries published in the period considere…
Lire les lignes de la Ville
2017
National audience; La ville est un système très riche qui regroupe une multitude d’éléments en interactions les uns avec les autres. Elle peut être lue de diverses manières, et, selon le regard porté, révéler ses qualités politiques, culturelles, sociales... L’angle de vue que nous avons choisi pour ce travail est celui morphologique.
Advances in Handwriting and Drawing: a multidisciplinary approach
1994
Choix de communications faites à la sixième Conférence internationale sur l'écriture manuscrite et le dessin, Paris, juillet 1993, organisée par l'ENST et l'URA 820 du CNRS; International audience
Caractérisation de la connectivité des habitats du petit rhinolophe en Franche-Comté
2011
National audience
Bridging landscape graphs and genetic graphs for analysing habitat ecological connectivity
2021
Several key ecological processes for maintaining biodiversity rely upon the ecological connectivity of habitat. Accordingly, connectivity modelling methods have been developed for understanding precisely the influence of connectivity and deriving sound biodiversity conservation measures. Among them, landscape graphs represent habitat networks as sets of habitat patches (nodes) connected by potential dispersal paths (links). Yet, the ecological relevance of these tools required validation from biological data reflecting closely the influence of habitat connectivity. Genetic data allow for such validation as population genetic structure partly depends on dispersal-driven gene flow between hab…
Le Dictionnaire de l’Académie française source des dictionnaires bilingues franco-italiens (1694-1870)
2016
L'articolo si propone di sondare l'influenza del Dictionnaire de l'Académie française sulla lessicografia bilingue franco-italiana in un arco cronologico compreso tra il 1694 e il 1870. In particolare, si passano in rassegna le prefazioni dei principali dizionari bilingui pubblicati nel periodo considerato, al fine di valutare se il Dictionnaire de l'Académie venga citato tra le fonti e qual uso il lessicografo intenda farne. The article aims to explore the influence of the Dictionnaire de l'Académie française on French-Italian bilingual lexicography in a chronological arc between 1694 and 1870. In particular, the prefaces of the main bilingual dictionaries published in the period considere…
Paysage & [et] infrastructures de transport : modélisation des impacts des infrastructures sur les réseaux écologiques
2013
The development of linear infrastructures leads to the fragmentation and the artificialisation of the landscape across scales. Landscape fragmentation is a spatial process that is accompanied by a progressive decrease of the connectivity between the elements needed to conduct ecological processes. Thus, maintaining a good level of connectivity between natural habitats, compatible with human activities, has become a major issue for the preservation of biodiversity.By mobilizing methods from graph theory and landscape ecology, the thesis seeks to demonstrate the value of landscape graphs to model ecological networks and analyze impacts of transportation infrastructures at regional scale.The m…
Contribution à l’apprentissage de représentation de données à base de graphes avec application à la catégorisation d’images
2020
Graph-based Manifold Learning algorithms are regarded as a powerful technique for feature extraction and dimensionality reduction in Pattern Recogniton, Computer Vision and Machine Learning fields. These algorithms utilize sample information contained in the item-item similarity and weighted matrix to reveal the intrinstic geometric structure of manifold. It exhibits the low dimensional structure in the high dimensional data. This motivates me to develop Graph-based Manifold Learning techniques on Pattern Recognition, specially, application to image categorization. The experimental datasets of thesis correspond to several categories of public image datasets such as face datasets, indoor and…
From optimization to algorithmic differentiation: a graph detour
2021
This manuscript highlights the work of the author since he was nominated as "Chargé de Recherche" (research scientist) at Centre national de la recherche scientifique (CNRS) in 2015. In particular, the author shows a thematic and chronological evolution of his research interests:- The first part, following his post-doctoral work, is concerned with the development of new algorithms for non-smooth optimization.- The second part is the heart of his research in 2020. It is focused on the analysis of machine learning methods for graph (signal) processing.- Finally, the third and last part, oriented towards the future, is concerned with (automatic or not) differentiation of algorithms for learnin…