Search results for "Icon"

Alberi e culti. Un contributo all’analisi degli elementi paesistici nella scultura a rilievo di età romana

2018

In the relief sculpture of Roman age, trees can perform different tasks, regardless of the type of monument they are represented in. In most cases trees are secondary elements, concurring to define the environment in which the carved scene takes place. But sometimes they assume a more important value and thus significatively contribute to the understanding of the content represented. A very interesting example in this regard we can see in a relief sculpted scene on a marble altar dedicated to the Matronae, coming from the Roman town of Angera, where four female devotees appear, engaged in a ritual dance under an oak. The comparison with other relief figurative scenes where landscape element…

Una pedagogia della vita emotiva

2014

Il contributo presenta le linee di una fenomenologa delle emozioni, il cui assunto principale è renderne evidente la portata referenziale. Vengono così giustificate come vie specifiche che consentono la comprensione degli aspetti singolari delle persone che hanno parte ai mondi della nostra vita. È una prospettiva critica rispetto alla cultura che sembra oggi prevalente e che vede invece nelle emozioni quasi esclusivamente il loro aspetto espressivo. Le emozioni come vie di conoscenza hanno poi una loro evoluzione caratteristica, crescendo in consapevolezza e acquistando la dimensione della durata. Viste nelle forme di reazione «favorevole» alla presenza dell’altro sono forme di amore e por…

Breve fenomenologia della vita emotiva nella prospettiva dell'educazione

2018

The paper explores the link between human becoming and biographical narrative, within the empathy-centred existential dialogue. The existential dialogue should not be assimilated to a psychotherapeutic method: it is, rather, a special care relationship within an educational perspective. In a semiological analysis, the existential dialogue is an interaction shaped according to an empathetic code and giving rise to a peculiar relational regulation system based on: 1. demandingness (or control), linked to authority and competence; 2. emotional responsiveness (or empathetic contact), linked to socio-affective interaction; 3. authenticity (or congruence), linked to transparency in speaking. In a…

Luminescence of silica glass containing aluminum oxide

2004

Abstract Optical properties of silica glass with different doping of Al 2 O 3 up to 1.5 mol% were studied. Alumina stimulates creation of a luminescence centers with specific band at 3.3 eV. A new band at 8.2 eV appears in luminescence excitation spectra. There is transport of energy to other luminescence centers associated with an impurity (Ag, Ce) at this energy. Alumina stimulates creation of E′ centers under γ-irradiation beside trapped hole on AlO 4 tetrahedron as well as creation of a silicon related oxygen deficient center (SiODC) under cathodoexcitation. Visually, the samples look inhomogeneous even after γ-irradiation. The explanation could be heterogeneity of the samples. Alumina …

Electronic excitations of 1,4-disilyl-substituted 1,4-disilabicycloalkanes: a MS-CASPT2 study of the influence of cage size.

2007

We present a multistate complete active space second-order perturbation theory computational study aimed to predict the low-lying electronic excitations of four compounds that can be viewed as two disilane units connected through alkane bridges in a bicyclic cage. The analysis has focused on 1,4-disilyl-1,4-disilabicyclo[2.2.1]heptane (1a), 1,4-bis(trimethylsilyl)-1,4-disilabicyclo[2.2.1]heptane (1b), 1,4-disilyl-1,4-disilabicyclo[2.1.1]hexane (2a), and 1,4-bis(trimethylsilyl)-1,4-disilabicyclo[2.1.1]hexane (2b). The aim has been to find out the nature of the lowest excitations with significant oscillator strengths and to investigate how the cage size affects the excitation energies and the…

Tesi portanti di un'antropologia di segno sponsale

2015

Il saggio presenta e argomenta alcune affermazioni che consentano di intendere l'amore sponsale come ambito di crescita educativa delle persone: itinerario nel quale sia possibile pervenire ad una conoscenza sempre più adeguata del nome proprio e del desiderio d'essere e di senso costitutivo di ogni soggetto. Assumono rilievo le categorie di relazionalità riconoscente e quella del dono incondizionato di sé all'altro.

Altari e arredi sacri nella Sicilia Occidentale al tempo dei neostili. Lettura iconografica tra teologia e arte.

2012

The Effect of Electronic Properties of Anodized and Hard Anodized Ti and Ti6Al4V on Their Reactivity in Simulated Body Fluid

2022

The electronic properties of barrier and porous layers on Ti and Ti6Al4V were studied. Barrier anodic oxides grown to 40 V on Ti and on Ti6Al4V are both n-type semiconductors with a band gap of 3.3 eV and 3.4 eV respectively, in agreement with the formation of amorphous TiO2. Anodizing to 200 V at 20 mA cm−2 in calcium acetate and β-glycerol phosphate disodium pentahydrate leads to the formation of Ca and P containing porous films with a photoelectrochemical behaviour dependent on the metallic substrate. A band gap of 3.2 eV and the flat band potential of −0.5 V vs Ag/AgCl were measured for the porous oxide on Ti, while optical transitions at 2.15 eV and a significantly more positive flat b…

Amicizia come pratica del riconoscimento in Nietzsche

2005

Finite-size scaling of charge carrier mobility in disordered organic semiconductors

2016

Simulations of charge transport in amorphous semiconductors are often performed in microscopically sized systems. As a result, charge carrier mobilities become system-size dependent. We propose a simple method for extrapolating a macroscopic, nondispersive mobility from the system-size dependence of a microscopic one. The method is validated against a temperature-based extrapolation [A. Lukyanov and D. Andrienko, Phys. Rev. B 82, 193202 (2010)]. In addition, we provide an analytic estimate of system sizes required to perform nondispersive charge transport simulations in systems with finite charge carrier density, derived from a truncated Gaussian distribution. This estimate is not limited t…