Search results for " Analisi"
showing 10 items of 1252 documents
Effetto del trattamento con 1-meticiclopropene su frutti di mango (Mangifera indica L.) della cul ti var Kei tt, conservati a temperatura ambiente
2016
Il Mango (Mangifera indica L.) è un frutto climaterico sensibile alle basse temperature e con una vita post-raccolta relativemente breve. L’obiettivo della ricerca è stato quello di valutare l’effetto dell’ 1-metilciclopropene (1-MCP), applicato a temperature ambiente, sulla conservazione di frutti di mango della cv Keitt. I frutti di Keitt, cultivar a maturazione tardiva, sono stati raccolti, presso un’azienda commerciale, sita a Furiano, in provincia di Messina (38°3' N, 14°33' E; 5 m s.l.m.). Immediatamente dopo la raccolta, sui frutti sono state effettuate le analisi chimico-fisiche: peso, consistenza, contenuto in solidi solubili, acidità titola- bile, colore, ecc. I frutti sono sta…
On the Almost Everywhere Convergence of Multiple Fourier-Haar Series
2019
The paper deals with the question of convergence of multiple Fourier-Haar series with partial sums taken over homothetic copies of a given convex bounded set $$W\subset\mathbb{R}_+^n$$ containing the intersection of some neighborhood of the origin with $$\mathbb{R}_+^n$$ . It is proved that for this type sets W with symmetric structure it is guaranteed almost everywhere convergence of Fourier-Haar series of any function from the class L(ln+L)n−1.
Frame-related Sequences in Chains and Scales of Hilbert Spaces
2022
Frames for Hilbert spaces are interesting for mathematicians but also important for applications in, e.g., signal analysis and physics. In both mathematics and physics, it is natural to consider a full scale of spaces, and not only a single one. In this paper, we study how certain frame-related properties of a certain sequence in one of the spaces, such as completeness or the property of being a (semi-) frame, propagate to the other ones in a scale of Hilbert spaces. We link that to the properties of the respective frame-related operators, such as analysis or synthesis. We start with a detailed survey of the theory of Hilbert chains. Using a canonical isomorphism, the properties of frame se…
Frames and weak frames for unbounded operators
2020
In 2012 G\u{a}vru\c{t}a introduced the notions of $K$-frame and of atomic system for a linear bounded operator $K$ in a Hilbert space $\mathcal{H}$, in order to decompose its range $\mathcal{R}(K)$ with a frame-like expansion. In this article we revisit these concepts for an unbounded and densely defined operator $A:\mathcal{D}(A)\to\mathcal{H}$ in two different ways. In one case we consider a non-Bessel sequence where the coefficient sequence depends continuously on $f\in\mathcal{D}(A)$ with respect to the norm of $\mathcal{H}$. In the other case we consider a Bessel sequence and the coefficient sequence depends continuously on $f\in\mathcal{D}(A)$ with respect to the graph norm of $A$.
On the existence of at least a solution for functional integral equations via measure of noncompactness
2017
In this article, we use fixed-point methods and measure of noncompactness theory to focus on the problem of establishing the existence of at least a solution for the following functional integral equation ¶ \[u(t)=g(t,u(t))+\int_{0}^{t}G(t,s,u(s))\,ds,\quad t\in{[0,+\infty[},\] in the space of all bounded and continuous real functions on $\mathbb{R}_{+}$ , under suitable assumptions on $g$ and $G$ . Also, we establish an extension of Darbo’s fixed-point theorem and discuss some consequences.
Análisis funcional de utillaje sobre caliza del nivel XII (MIS 6) de la Cova del Bolomor (Tavernes de la Valldigna, Valencia). Estudio experimental y…
2016
En el trabajo se analiza desde el punto de vista funcional un conjunto de materiales líticos del nivel XII de la Cova del Bolomor (Tavernes de la Valldigna, Valencia), compuesto en su mayoría por utillaje sobre lasca realizado en caliza.El tema de las tesis presenta, por tanto, dos ámbitos de investigación. Por un lado, y a través del análisis de las huellas de uso del material lítico de la Cova del Bolomor, proceder a la identificación de los aspectos funcionales de los útiles, los cuales pueden contribuir a la caracterización de las diferentes ocupaciones de la cueva, y suponen un avance en el conocimiento de las formas de vida de los grupos humanos del Pleistoceno Medio.Este estudio pres…
A tribute to Massimo Lanza de Cristoforis
2020
It is with great pleasure that we dedicate the special issue Functional Analytic Methods in Partial Differential Equations of Complex Variables and Elliptic Equations to the 60th birthday of Massim...
IL DIALOGO NELLA MEDIAZIONE E RISOLUZIONE DI CONFLITTI. APPROFONDIMENTI LINGUISTICI
2016
I paesi europei conoscono da tempo varie forme di mediazione e conciliazione. Pur nella diversità di metodologie e regole della mediazione presenti nei paesi membri, sono riscontrabili tratti comuni che tuttavia necessiterebbero di una regolamentazione univoca per tutto il territorio europeo. Il ruolo assunto dall’esperienza comunitaria in materia di conciliazione è assai rilevante, in quanto lo strumento della mediazione ha ricevuto un importante sviluppo grazie alle direttive europee aventi lo scopo di adeguare le legislazioni degli Stati membri in materia di Alternatitve Dispute Resolution (ADR), dapprima in materia societaria e commerciale, successivamente in materia di consumo e nei ra…