Search results for "Urbe"
showing 10 items of 85 documents
Infinitely many solutions for a perturbed p-Laplacian boundary value problem with impulsive effects
2017
In this paper, we deal with the existence of weak solutions for a perturbed p-Laplacian boundary value problem with impulsive effects. More precisely, the existence of an exactly determined open interval of positive parameters for which the problem admits infinitely many weak solutions is established. Our proofs are based on variational methods.
Usage des points massiques et des courbes de Bézier pour la modélisation des cubiques
2017
International audience; Cet article étend l'étude des points singuliers et des points d'inflexion des courbes rationnelles cubiques en s'ins-pirant de la méthode proposée par M. Sakai dans le cadre des points massiques. L'intérêt des points massiques est de généraliser le tracé des courbes admettant des points doubles et de contrôler sans calcul supplémentaire l'en-semble des fonctions algébriques cubiques. Un exemple d'application est la réalisation de lettre à l'anglaise ou lettre manuscrite. Les courbes de Bézier permettent d'approcher des profils complexes, le travail présenté permet d'aborder de la même manière l'ensemble des courbes, ce que ne permet pas les splines cubiques d'Hermite.
Points massiques, cubiques Bézier rationnelles et leur points singuliers
2018
National audience; Cet articleétend l'étude des points singuliers des courbes rationnelles cubiques. Ellle porte sur les points d'inflexion, les points doubles et points de rebroussement. Les courbes cubiques rationnelleś etudiées sont décrites au moyen de la technique des points massiques. Un point massique est soit un point pondéré soit un vecteur pur. Il prend le statut de point de contrôle pour une représentation pa-ramétrique exploitable sur ordinateur dans le domaine de la géométrie de la Conception Assistée par Ordinateur. L'intérêt des points massiques est de pouvoir généraliser le tracé des courbes admettant des points doubles et de contrôler sans calcul supplémentaire l'ensemble d…
Des curés chez Bacchus : satire anticléricale et opposition politique chez Gustave Courbet (1863-1868)
2013
International audience; Dans les années 1860, parallèlement à sa virulente opposition au Second Empire, Gustave Courbet produit des tableaux, pamphlets et illustrations qui servent son combat anticlérical. En écho au Retour de la conférence, refusé pour immoralité au Salon de 1863 et au Salon des Refusés – l’œuvre montre un cortège de curés ivres –, le peintre publie en 1868 un opuscule, Les Curés en goguette, illustré de six dessins qu’il conçoit comme une extension de son tableau original et comme une intervention polémique, à caractère satirique, dans la tradition de la caricature anticléricale. Mais cette suite d’images, jusqu’alors peu étudiée, croise d’autres préoccupations de Courbet…
ANALYSIS OF DIFFERENT VISUAL STRATEGIES OF 'ISOLATED VEHICLE' AND 'DISTURBED VEHICLE'
2017
This paper analyses the driver’ visual behaviour in the different conditions of ‘isolated vehicle’ and ‘disturbed vehicle’. If the meaning of the former is clear, the latter condition considers the influence on the driving behaviour of various objects that could be encountered along the road. These can be classified in static (signage, stationary vehicles at the roadside, etc.) and dynamic objects (cars, motorcycles, bicycles). The aim of this paper is to propose a proper analysis regarding the driver’s visual behaviour. In particular, the authors examined the quality of the visually informa-tion acquired from the entire road environment, useful for detecting any critical safety condition. …
Integrable systems and moduli spaces of curves
2016
This document has the purpose of presenting in an organic way my research on integrable systems originating from the geometry of moduli spaces of curves, with applications to Gromov-Witten theory and mirror symmetry. The text contains a short introduction to the main ideas and prerequisites of the subject from geometry and mathematical physics, followed by a synthetic review of some of my papers (listed below) starting from my PhD thesis (October 2008), and with some open questions and future developements. My results include: • the triple mirror symmetry among P 1-orbifolds with positive Euler characteristic , the Landau-Ginzburg model with superpotential −xyz + x p + y q + z r with 1 p + …
Espaces tangents pour les formes auto-similaires
2013
The fractal geometry is a relatively new branch of mathematics that studies complex objects of non-integer dimensions. It finds applications in many branches of science as objects of such complex structure often poses interesting properties. In 1988 Barnsley presented the Iterative Func-tion System (IFS) model that allows modelling complex fractal shapes with only a limited set of contractive transformations. Later many other models were based on the IFS model such as Language-Restricted IFS,Projective IFS, Controlled IFS and Boundary Controlled IFS. The lastto allow modelling complex shapes with control points and specific topol-ogy. These models cover classical geometric models such as B-…
Moderately close Neumann inclusions for the Poisson equation
2016
We investigate the behavior of the solution of a mixed problem for the Poisson equation in a domain with two moderately close holes. If ϱ1 and ϱ2 are two positive parameters, we define a perforated domain Ω(ϱ1,ϱ2) by making two small perforations in an open set: the size of the perforations is ϱ1ϱ2, while the distance of the cavities is proportional to ϱ1. Then, if r∗ is small enough, we analyze the behavior of the solution for (ϱ1,ϱ2) close to the degenerate pair (0,r∗). Copyright © 2016 John Wiley & Sons, Ltd.
L'identité de Fay en théorie des systèmes intégrables
2011
Fay's identity on Riemann surfaces is a powerful tool in the context of algebro-geometric solutions to integrable equations. This relation generalizes a well-known identity for the cross-ratio function in the complex plane. It allows to establish relations between theta functions and their derivatives. This offers a complementary approach to algebro-geometric solutions of integrable equations with certain advantages with respect to the use of Baker-Akhiezer functions. It has been successfully applied by Mumford et al. to the Korteweg-de Vries, Kadomtsev-Petviashvili and sine-Gordon equations. Following this approach, we construct algebro-geometric solutions to the Camassa-Holm and Dym type …
La urbe moderna en la narrativa de Elena Fortún: espacio y significado
2021
Este trabajo presenta un análisis del espacio de la urbe moderna en la narrativa de Elena Fortún y su significado dentro de la producción literaria de la autora. Para ello, se detiene en los episodios de la saga de Celia que transcurren en el escenario de la capital madrileña y observa los vínculos entre los elementos de transformación y modernidad urbana con los personajes y sus actitudes, identificando el cosmopolitismo con la apertura de la mentalidad tradicional española hacia corrientes culturales renovadoras. This work presents an analysis of the space of the modern city in Elena Fortún’s narrative and its meaning within the author’s literary production. To do this, he stops at the ep…