Search results for "Arabo"

showing 10 items of 151 documents

Variational parabolic capacity

2015

We establish a variational parabolic capacity in a context of degenerate parabolic equations of $p$-Laplace type, and show that this capacity is equivalent to the nonlinear parabolic capacity. As an application, we estimate the capacities of several explicit sets.

p-parabolic equationcapacityApplied Mathematicsta111Mathematical analysisDegenerate energy levelsMathematics::Analysis of PDEsContext (language use)Parabolic cylinder functionType (model theory)Parabolic partial differential equationHeat capacityNonlinear systemdegenerate parabolic equationsnonlinear potential theoryDiscrete Mathematics and CombinatoricsAnalysisComputer Science::Information TheoryMathematicsDiscrete and Continuous Dynamical Systems
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Il parco dei Re. Studi sul paesaggio di Palermo nel medioevo

2022

Il volume contiene i primi esiti di una ricerca in corso di svolgimento presso il Dipartimento di Architettura dell’Università degli Studi di Palermo, in partenariato con il Consejo Superior de Investigaciones Científicas Escuela de Estudios Árabes in Granada (Spagna) e la collaborazione della Soprintendenza Regionale ai Beni Culturali e all’Identità Siciliana per la Provincia di Palermo. The volume contains the first results of an ongoing research at the Department of Architecture of the University of Palermo, in partnership with the Consejo Superior de Investigaciones Científicas Escuela de Estudios Árabes in Granada (Spain) and the collaboration of Regional Superintendency for Cultural H…

paesaggio arabo normanno storico palermo medioevo qanat unescoSettore ICAR/15 - Architettura Del Paesaggio
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Molecular and biometric data on Carabus (Macrothorax) morbillosus Fabricius, 1792 (Coleoptera, Carabidae) from Mid Mediterranean areas

2022

The present study was carried out using molecular and biometric data of Carabus (Macrothorax) morbillosus from mid-Mediterranean areas to determine additional information on basal relationships among its representative subspecies. To this aim, two different kinds of approach were employed, including a morphometric analysis of four morphological parameters (i.e., elytra length, elytra width, pronotum length, pronotum width) of 128 specimens, and a Bayesian genetic analysis of 44 cytochrome oxidase subunit I (COI) partial sequences (i.e., 38 examined for the first time and six retrieved from GenBank database). Representative populations of C. (M.) morbillosus were sampled in four countries, n…

pronotumInsectaArthropodaSettore BIO/05 - ZoologiaCarabusBayesian analysisCOICarabinitaxonomyBayesian analysis biogeography carabids COI elytra morphometric analysis pronotum taxonomyCaraboideaAnimaliaCarabinaCarabus morbillosusEcology Evolution Behavior and Systematicsbiogeographyelytracarabidsmorphometric analysisCarabinaeBiotaColeopteraSettore AGR/11 - Entomologia Generale E ApplicataAnimal Science and ZoologyCarabidaeZooKeys
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Lo Scibene di Palermo un monumento da restaurare

2018

«Io penso che in tal guisa abbandonato il monumento raro assai più della Cuba e della Zisa in pochi anni andrà distrutto, e non lascerà orma della sua esistenza, ciò tornerebbe a disonore dell’epoca nostra. Io sarei ardito d’intraprendere una illustrazione di sì alto interesse, ma trovo diversi ostacoli, e tra questi mezzi necessari per lavori preparatori di sgombro, scavo, e spatinamento, che non sono di poco importo. Farei a mio conto le spese dei ponti e le scale per le misurazioni, e tutt’altro per la pubblicazione delle tavole, e de’ ragionamenti, purché la commissione di antichità e belle arti fosse plausibile a caricarsi delle prime spese sul fondo d’altronde destinato a tal uopo. [……

restauro arabo normanno PalermoSettore ICAR/19 - Restauro
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Palermo. Un museo virtuale - Palermo. A virtual museum

2016

Conoscenza, conservazione e valorizzazione sono tra gli obiettivi principali delle discipline riguardanti il disegno, il rilievo e la restituzione grafica dell’architettura, che non si fermano soltanto alla documentazione dello stato di fatto ma comprendono anche ricostruzioni congetturali del processo diacronico di modificazione del monumento ai fini di una sua più ampia conoscenza; la storia del monumento si inserisce, in tal modo, nella storia della città e dei suoi cambiamenti culturali; queste nuove immagini sono veri e propri importanti elementi di un "virtual museum" del sito e, più in generale, della città sulla quale esso insiste. Da molti anni, ormai, i docenti, gli assegnisti di …

restituzione graficavirtual museumricostruzioni digitaliRedrawingmodelingrilievoSettore ICAR/17 - DisegnohistoryMuseo virtualearchitettura arabo-normannaPalermo
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A Method of Conversion of some Coefficient Inverse Parabolic Problems to a Unified Type of Integral-Differential Equation

2011

Coefficient inverse problems are reformulated to a unified integral differential equation. The presented method of conversion of the considered inverse problems to a unified Volterra integral-differential equation gives an opportunity to distribute the acquired results also to analogous inverse problems for non-linear parabolic equations of different types.

symbols.namesakeInverse scattering transformDifferential equationMathematical analysisInverse scattering problemGeneral EngineeringsymbolsInverseInverse problemIntegral equationVolterra integral equationParabolic partial differential equationMathematicsAdvanced Materials Research
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Shape Sensitivity Analysis and Gradient-Based Optimization of Large Structures Using MLFMA

2014

A fast method for computing the action of shape-differentiated electric field integral equation (EFIE) system matrix to a vector is derived exploiting the multilevel fast multipole algorithm (MLFMA). The proposed method is used in conjunction with the adjoint-variable method (AVM) to compute the shape gradient of arbitrary objective functions depending on shape of a metallic scatterer. The method is demonstrated numerically by optimizing the shape of a parabolic reflector illuminated with a half-wave dipole.

ta113DipoleParabolic reflectorGradient based algorithmMathematical analysisShape gradientSensitivity (control systems)Electrical and Electronic EngineeringElectric-field integral equationMultipole expansionAction (physics)MathematicsIEEE Transactions on Antennas and Propagation
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A posteriori error estimates for time-dependent reaction-diffusion problems based on the Payne-Weinberger inequality

2015

We consider evolutionary reaction-diffusion problem with mixed Dirichlet--Robin boundary conditions. For this class of problems, we derive two-sided estimates of the distance between any function in the admissible energy space and exact solution of the problem. The estimates (majorants and minorants) are explicitly computable and do not contain unknown functions or constants. Moreover, it is proved that the estimates are equivalent to the energy norm of the deviation from the exact solution.

ta113InequalityApplied Mathematicsmedia_common.quotation_subjectta111Numerical Analysis (math.NA)Parabolic partial differential equationExact solutions in general relativityevolutionary reaction-diffusion problemsNorm (mathematics)FOS: MathematicsDiscrete Mathematics and CombinatoricsA priori and a posterioriApplied mathematicsBoundary value problemMathematics - Numerical AnalysisDirichlet–Robin boundary conditionsAnalysisMathematicsmedia_common
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Tradurre il plurilinguismo: francese mescidato e calchi dall'arabo in "Naissance à l'aube" di Driss Chraibi

2008

Il contributo si propone di esaminare la particolare forma di francese mescidato creata dal romanziere Driss Chraibi per caratterizzare i personaggi dei suoi romanzi, nonché le rese traduttive di questa cifra stilistica dell'autore.

traduzione francese mescidatocalchi dall'araboSettore L-LIN/04 - Lingua E Traduzione - Lingua FranceseDriss Chraibi
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Equivalence of viscosity and weak solutions for a $p$-parabolic equation

2019

AbstractWe study the relationship of viscosity and weak solutions to the equation $$\begin{aligned} \smash {\partial _{t}u-\varDelta _{p}u=f(Du)}, \end{aligned}$$ ∂ t u - Δ p u = f ( D u ) , where $$p>1$$ p > 1 and $$f\in C({\mathbb {R}}^{N})$$ f ∈ C ( R N ) satisfies suitable assumptions. Our main result is that bounded viscosity supersolutions coincide with bounded lower semicontinuous weak supersolutions. Moreover, we prove the lower semicontinuity of weak supersolutions when $$p\ge 2$$ p ≥ 2 .

viscosity solutionosittaisdifferentiaaliyhtälötPure mathematics35K92 35J60 35D40 35D30 35B51Mathematics::Analysis of PDEscomparison principleweak solutionparabolic p-LaplacianViscosityMathematics (miscellaneous)Mathematics - Analysis of PDEsBounded functionFOS: Mathematicsgradient termEquivalence (measure theory)MathematicsAnalysis of PDEs (math.AP)
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