Search results for " Elli"
showing 10 items of 121 documents
Comparison results for Monge - Ampère type equations with lower order terms
2003
In this paper we deal with Monge-Ampère type equations in two dimensions and, using the symmetrization with respect to the perimeter, we prove some comparison results for solutions of such equations involving the solutions of conveniently symmetrized problems.
Gravity Anomalies and Disturbances: Reductions and Analyses
2009
Accurate and precise lattice parameters by selected-area electron diffraction in the transmission electron microscope
2009
8 páginas, 6 figuras, 7 tablas.
Renormalized solutions for degenerate elliptic–parabolic problems with nonlinear dynamical boundary conditions and L1-data
2008
Abstract We consider a degenerate elliptic–parabolic problem with nonlinear dynamical boundary conditions. Assuming L 1 -data, we prove existence and uniqueness in the framework of renormalized solutions. Particular instances of this problem appear in various phenomena with changes of phase like multiphase Stefan problems and in the weak formulation of the mathematical model of the so-called Hele–Shaw problem. Also, the problem with non-homogeneous Neumann boundary condition is included.
Geometric contacts of surfaces immersed in Rn, n⩾5
AbstractWe study the extrinsic geometry of surfaces immersed in Rn, n⩾5, by analyzing their contacts with different standard geometrical models, such as hyperplanes and hyperspheres. We investigate the relation between different types of contact and the properties of the curvature ellipses at each point. In particular, we focalize our attention on the hyperspheres having contacts of corank two with the surface. This leads in a natural way to the concept of umbilical focus and umbilic curvature.
Geological modeling of Altavilla Milicia (Sicily) using HVSR data
2014
At today the use of inversion of HVSR curves is mainly limited to derive average parameters of the shear wave velocity, although recently they have been used also for a detailed reconstruction of the roof of the seismic bedrock (Di Stefano et al. 2014). Since ambient vibrations may contain waves travelling in all directions, as body waves and Rayleigh and Love waves, a limit of this method lies in the uncertain composition of seismic noise, in the lack of knowledge about the microseismic field and in the subjective choices regarding the data processing. This work aims to verify the potential and limits of the HVSR inversion for the purposes of geological reconstruction of the subsoil in hea…
Informatics in Descriptive Geometry. Didactic Experience
2009
This study is centred in the environment of the research into solutions of the problems of graphic representation, expressing theoretical considerations which allow the carrying out of geometric-descriptive procedures decoded in informatics language, for implementing CAD commands.
L'isola ai confini della terra promessa
2002
Il saggio descrive i percorsi creativi di Giovanni Sollima, tra musica colta, minimalismo e rock, soffermandosi in modo particolare sulla genesi, la struttura drammaturgica e i gli aspetti musicali dell'opera in due atti "Ellis Island" (libretto di Roberto Alajmo).
Eventi vascolari correlati ad alcune condizioni di iperviscosità sclerocitemica
2014
Gli approdi dei Migranti: Lampedusa come Ellis Island?
2015
Il volume raccoglie alcune relazioni presentate in occasione del ciclo di seminari Letture e riletture sulla Sicilia e sul Meridione, inserito nell'ambito del progetto di ricerca FFR dell'Università di Palermo, coordinato da Salvatore Costantino, dal titolo Genesi dei fenomeni e dei comportamenti mafiosi: istituzioni, società civile e modelli teorici in Sicilia tra Otto e Novecento.