Search results for "armo"
showing 10 items of 1364 documents
Introductory Quantum Physics Courses using a LabVIEW multimedia module
2007
We present the development of a LabVIEW multimedia module for introductory Quantum Physics courses and our experience in the use of this application as an educational tool in learning methodologies. The program solves the Time Dependent Schrodinger Equation for arbitrary potentials. We describe the numerical method used for solving this equation, as well as some mathematical tools employed to reduce the calculation time and to obtain more accurate results. As an illustration, we present the evolution of a wave packet for three different potentials: the repulsive barrier potential, the repulsive step potential, and the harmonic oscillator. This application has been successfully integrated in…
Two theorems of N. Wiener for solutions of quasilinear elliptic equations
1985
Relatively little is known about boundary behavior of solutions of quasilinear elliptic partial differential equations as compared to that of harmonic functions. In this paper two results, which in the harmonic case are due to N. Wiener, are generalized to a nonlinear situation. Suppose that G is a bounded domain in R n. We consider functions u: G--~R which are free extremals of the variational integral
Strong Instability of Ground States to a Fourth Order Schrödinger Equation
2019
Abstract In this note, we prove the instability by blow-up of the ground state solutions for a class of fourth order Schrödinger equations. This extends the first rigorous results on blowing-up solutions for the biharmonic nonlinear Schrödinger due to Boulenger and Lenzmann [8] and confirm numerical conjectures from [1–3, 11].
Harmonicity and minimality of oriented distributions
2004
We consider an oriented distribution as a section of the corresponding Grassmann bundle and, by computing the tension of this map for conveniently chosen metrics, we obtain the conditions which the distribution must satisfy in order to be critical for the functionals related to the volume or the energy of the map. We show that the three-dimensional distribution ofS4m+3 tangent to the quaternionic Hopf fibration defines a harmonic map and a minimal immersion and we extend these results to more general situations coming from 3-Sasakian and quaternionic geometry.
s, p-Harmonic Approximation of Functions of Least W s,l-Seminorm
2021
Abstract We investigate the convergence as $p\searrow 1$ of the minimizers of the $W^{s,p}$-energy for $s\in (0,1)$ and $p\in (1,\infty )$ to those of the $W^{s,1}$-energy, both in the pointwise sense and by means of $\Gamma $-convergence. We also address the convergence of the corresponding Euler–Lagrange equations and the equivalence between minimizers and weak solutions. As ancillary results, we study some regularity issues regarding minimizers of the $W^{s,1}$-energy.
Generazione d'armoniche da parte di fullereni
2015
International Successions in Spain: The Impact of a New EU Regulation
2009
ABSTRACTThe arrangement of cross-border successions is a real challenge nowadays for both citizens and authorities due to the multicultural profile of today’s societies together with the current diversity of regulations, both at the substantive and conflicts levels. On 14 October 2009, the European Union adopted a new Proposal for a Regulation on international successions, a comprehensive instrument which will entail the harmonization within the EU of the conflicts regulation of cross-borders inheritances. The text finally adopted will necessarily have to provide an adequate equilibrium of the interests of people living in Europe to be successful. Material justice should not only focus on t…
Natura e alterita: ancora sull'Aria del Tasso di Giuseppe Tartini:
2014
La passione di Giuseppe Tartini per la musica popolare è attestata da quattro versioni per violino dell’Aria del Tasso. L’Aria rientra nell’ambito di una nuova poetica che ricerca la verità nei canti di natura. Come i musicografi della generazione successiva, il violinista attribuisce alla semplicità un ruolo paradigmatico per separare il concetto di natura dal concetto di artificio. Per cui, il semplice canto di popolo, assieme alla musica greca del periodo classico e alla musica delle «nazioni» non evolute, è più vicino allo stato primigenio, ossia allo stato di natura e quindi alla verità. A questo problema si collegano tre fasi del pensiero del trattatista, in cui il termine natura subi…
Optimizing and comparing gap-filling techniques using simulated NDVI time series from remotely sensed global data
2019
Abstract NDVI (Normalized Difference Vegetation Index) time series usually suffer from remaining cloud presence, even after data pre-processing. To address this issue, numerous gap-filling (or reconstruction) techniques have been developed in the literature, although their comparison has mainly been local to regional, with only two global studies to date, and has led to sometimes contradictory results. This study builds on these different comparisons, by testing different parameterizations for five NDVI temporal profile reconstruction techniques, namely HANTS (Harmonic Analysis of Time Series), IDR (iterative Interpolation for Data Reconstruction), Savitzky-Golay, Asymmetric Gaussian and Do…
La perspectiva de la sostenibilidad en la sociedad del conocimiento interconectado: gobernanza, educación, ética
2013
El presente artículo pretende estimular la reflexión sobre la introducción de la perspectiva de la sostenibilidad en las nuevas sociedades de la información y del conocimiento sustentadas por las TIC, y caracterizadas por una globalización que dista mucho de ser inclusiva. Implica la construcción de un sistema mundial que promueva la búsqueda de la calidad ambiental, la justicia social y una economía equitativa y viable a largo plazo. La UNESCO ha señalado tres caminos básicos para conseguirlo: la gobernanza, la educación y la éticaLa gobernanza puede propiciar una conectividad social equitativa, cambios en los modelos de producción y consumo y la búsqueda y aplicación de soluciones reales …