46 citations · 99 across the 29 of their papers we have counts for
9 papers · 1 filter
Reliable approximation of separatrix manifolds in competition models with safety niches
Roberto Cavoretto, Alessandra De Rossi, Emma Perracchione +1
In dynamical systems saddle points partition the domain into basins of attractions of the remaining locally stable equilibria. This situation is rather common especially in populat…
Computing Topology Preservation of RBF Transformations for Landmark-Based Image Registration
R. Cavoretto, A. De Rossi, H. Qiao +3
In image registration, a proper transformation should be topology preserving. Especially for landmark-based image registration, if the displacement of one landmark is larger enough…
Partition of Unity Interpolation on Multivariate Convex Domains
Roberto Cavoretto, Alessandra De Rossi, Emma Perracchione
In this paper we present a new algorithm for multivariate interpolation of scattered data sets lying in convex domains $Ω\subseteq \RR^N$, for any . To organize the point…
A trivariate interpolation algorithm using a cube-partition searching procedure
Roberto Cavoretto, Alessandra De Rossi
In this paper we propose a fast algorithm for trivariate interpolation, which is based on the partition of unity method for constructing a global interpolant by blending local radi…
Hybrid spherical approximation
Alessandra De Rossi
In this paper a local approximation method on the sphere is presented. As interpolation scheme we consider a partition of unity method, such as the modified spherical Shepard's met…
Graphical representation of separatrices of attraction basins in two and three dimensional dynamical systems
Roberto Cavoretto, Alessandra De Rossi, Emma Perracchione +1
In this paper we consider the problem of reconstructing separatrices in dynamical systems. In particular, here we aim at partitioning the domain approximating the boundaries of the…
Local interpolation schemes for landmark-based image registration: a comparison
Giampietro Allasia, Roberto Cavoretto, Alessandra De Rossi
In this paper we focus, from a mathematical point of view, on properties and performances of some local interpolation schemes for landmark-based image registration. Precisely, we c…
A food chain ecoepidemic model: infection at the bottom trophic level
Alessandra De Rossi, Francesco Lisa, Luca Rubini +2
In this paper we consider a three level food web subject to a disease affecting the bottom prey. The resulting dynamics is much richer with respect to the purely demographic model,…
Two-strain ecoepidemic systems: the obligated mutualism case
Chiara Bosica, Alessandra De Rossi, Noemi L. Fatibene +2
We present a model for obligated mutualistic associations, in which two transmissible diseases are allowed to infect just one population. As the general model proves too hard to be…