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Resultados globales: 6 registros encontrados en 0.03 segundos.
Artículos, Encontrados 6 registros
Artículos Encontrados 6 registros  
1.
16 p, 417.5 KB Hölder continuity for the Parabolic Anderson Model with space-time homogeneous Gaussian noise / Balan, Raluca M. (University of Ottawa. Department of Mathematics and Statistics) ; Quer i Sardanyons, Lluís (Universitat Autònoma de Barcelona. Departament de Matemàtiques) ; Song, Jian (Shandong University. School of Mathematics)
In this article, we consider the Parabolic Anderson Model with constant initial condition, driven by a space-time homogeneous Gaussian noise, with general covariance function in time and spatial spectral measure satisfying Dalang's condition. [...]
2019 - 10.1007/s10473-019-0306-3
Acta Mathematica Scientia, Vol. 39, Issue 3 (May 2019) , p. 717-730  
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2.
10 p, 224.3 KB Skeleton for the one-dimensional aggregation equation / Cantero Guardeño, Juan Carlos (Universitat Autònoma de Barcelona. Departament de Matemàtiques) ; Orobitg i Huguet, Joan (Universitat Autònoma de Barcelona. Departament de Matemàtiques)
For the aggregation equation in R, we consider the evolution of an initial density corresponding to the characteristic function of some set Ω0. We study the limit measure at the blow up time 1 for Ω0 open or compact and we inspect the limit set (skeleton) where this measure is supported.
2023 - 10.1007/s13324-023-00780-3
Analysis and Mathematical Physics, Vol. 13, Issue 1 (February 2023), art. 17  
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3.
44 p, 619.5 KB Existence of density for the stochastic wave equation with space-time homogeneous Gaussian noise / Balan, Raluca M. (University of Ottawa. Department of Mathematics and Statistics (Canada)) ; Quer i Sardanyons, Lluís (Universitat Autònoma de Barcelona. Departament de Matemàtiques) ; Song, Jian (Shandong University. School of Mathematics (China))
In this article, we consider the stochastic wave equation on R × R, driven by a linear multiplicative space-time homogeneous Gaussian noise whose temporal and spatial covariance structures are given by locally integrable functions γ (in time) and f (in space), which are the Fourier transforms of tempered measures ν on R, respectively µ on R. [...]
2019 - 10.1214/19-EJP363
Electronic Journal of Probability, Vol. 24, Issue 106 (2019) , p. 1-43  
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4.
16 p, 396.6 KB Explicit traveling waves and invariant algebraic curves / Gasull, Armengol (Universitat Autònoma de Barcelona. Departament de Matemàtiques) ; Giacomini, Hector (Université de Tours (France). Laboratoire de Mathématiques et Physique Théorique)
We introduce a precise definition of algebraic travelling wave solution of n-th order partial differential equations and prove that the only algebraic travelling waves solutions for the celebrated Fisher-Kolmogorov equation are the ones found in 1979 by Ablowitz and Zeppetella. [...]
2015
Nonlinearity, Vol. 28 (2015) , p. 1597-1606  
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5.
13 p, 569.2 KB A PDE Method to Segment Image Linear Objects with Application to Lens Distortion Removal / El-Melegy, Moumen T. (Assiut University (Assiut, Egipte). Electrical Engineering Department) ; Al-Ashwal, Nagi H. (Assiut University (Assiut, Egipte). Electrical Engineering Department)
In this paper, we propose a partial differential equation based method to segment image objects, which have a given parametric shape based on energy functional. The energy functional is composed of a term that detects object boundaries and a term that constrains the contour to find a shape compatible with the parametric shape. [...]
2007 - 10.5565/rev/elcvia.145
ELCVIA : Electronic Letters on Computer Vision and Image Analysis, V. 6 n. 2 (2007) p. 9-21  
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6.
17 p, 2.1 MB An Interactive Algorithm for Image Smoothing and Segmentation / Carneiro de Andrade, Marcos (Centro de Desenvolvimento da Tecnologia Nuclear (Belo Horizonte, Brasil))
This work introduces an interactive algorithm for image smoothing and segmentation. A non-linear partial differential equation is employed to smooth the image while preserving contours. The segmentation is a region-growing and merging process initiated around image minima (seeds), which are automatically detected, labeled and eventually merged. [...]
2004 - 10.5565/rev/elcvia.71
ELCVIA : Electronic Letters on Computer Vision and Image Analysis, V. 4 n. 1 (2004) p. 32-48  
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