Search results for "walls"

Halaesa Arconidea (Tusa, Messina). Primi risultati dagli scavi delle fortificazioni, settore nord-est.

2023

This report describes the activities and results of two years of archaeological excavations carried out by the University of Palermo at the site of Halaesa, in northern Sicily. The excavations revealed the structure of the ancient city walls (maybe built in two different phases, during the Late Hellenistic/Early Roman peri-od) and the presence of a tank close to the wall, connected to the defense sistem.

Evaluation of Daylight Availability for Energy Savings.

2015

Dynamic daylight simulations are very useful instruments in daylighting design process. They allow an in depth analysis of indoor daylight availability levels and define if they are adequate to perform a particular visual task. Their results can be used to design shading devices or lighting control systems and compare different technical solutions. The use of these simulations is likely to spread in the common design practice since some regulations and green building rating systems suggest their use. This paper presents dynamic daylight simulation results related to an open-plan office, performed with Autodesk 3ds Max Design ® , which is a calculation software validated by recent researches…

Shake-table testing of a stone masonry building aggregate: overview of blind prediction study

2023

Bulletin of earthquake engineering (2023). doi:10.1007/s10518-022-01582-x special issue: "Adjacent Interacting Masonry Structures"

Indagine sperimentale sul comportamento ciclico di pannelli sottili di controvento di telai in acciaio

2007

The paper concerns the experimental results performed on steel (S 235) zinc plated panels having 1500 x 1150 x 1.5 mm dimensions, linked to hinged steel frame. In order to the slen-derness of plates, considerable displacements out-of-plane are evident at loads significantly lower of ultimate load. Considering the steel constitutive curves obtained from tensile tests, the comparison of experimental and numerical (ADINA) results is proposed. The results show the excellent seismic behaviour of the system having stable hysteresis loops.

The thermophysical characterization of technical elements in the historic architecture: experiences in Palermo

2014

Per contemperare il miglioramento delle prestazioni energetiche e ambientali dell'architettura storica con l'esigenza della sua conservazione, è necessario analizzare le caratteristiche termofisiche dei materiali e degli elementi tecnici che la connotano. Tuttavia la disponibilità di pochi dati in merito si somma alle disomogeneità tipiche della costruzione storica e alle difficoltà di analisi ad esse connesse. In particolare, per la trasmittanza termica delle murature storiche, la letteratura scientifica evidenzia scostamenti anche notevoli tra i valori desunti da misure in situ e quelli calcolati, in genere superiori ai primi. Il contributo espone gli obiettivi e la metodologia di un prog…

The Architecture of the Limit. The recovery of the southern Agrigento's historical walls.

2012

The fourteenth-century Agrigento's walls was interested by strong interventions during last century that led to the present image. In this critical place there are no project, no order, no logic, everything is left to chance. The ambitious target of the project was to give an order to this self caused chaos, to this route that should show the lost historical memory. The project aimed to reshape the urban area through zero-volume interventions and to make manifest the peculiarities of this territory trough small gestures, creating sequences of recognizable places that are able to express sense and identity of the urban space. The most significant intervention is designed for a doubling of th…

Turbulent Flow Structures For Different Roughness Conditions of Channel Walls: Results of experimental investigation in laboratory flumes

2013

Self-polarization of light in optical fibers

2015

The second performs the first experimental demonstration of the polarization domain walls which cancel the effects which degrade the intensity and spectral profile of a telecom signal during propagation. This phenomenon comes from non-linear coupling between the two orthogonal polarization modes of light propagating in a Kerr medium in normal dispersion regime, and causes a modulation in phase opposition of the two modes along the fiber. It is possible to lock two optical pulse trains complementary intensity so that the pulses do not suffer the effects of distortion occurring in the fiber in order to maintain the information to be transmitted. And a distortion-free propagation was achieved …

Cross-phase modulation effects in normal dispersive fibers and their applications

2018

In this Ph.D., physical effects arising from cross-phase modulation between twoorthogonally polarized signals propagating in normal dispersion fibers arestudied and some of their applications investigated.First, a 40-GHz pulse generator is designed by sending two orthogonallypolarized out-of-phase sinusoidal waves in a normally dispersive optical fiber.A large power imbalance between the two waves induces a periodic phasepotential for the weak replica which turns the normal dispersive defocusingregime into a focusing dynamics, thus compressing the sinusoidal wave intoshort and well-separated pulses.A signal sampler and magnifier was then designed using the same principle,sending a high powe…

Πλησίον τοῦ τείχους. Aree di culto rupestri e ‘vie sacre’ presso le mura nella Sicilia di età classica ed ellenistica

2020

The niches hewn in the rock in proximity to city gates and-walls are a recurring trait of the peri-urban landscape of Sicilian towns, especially in the south-eastern part of the island. Niches are pierced too, in multiple rows, on the walls of former quarries, in most cases close to the city walls, or in artificial caves used for cultic purposes, as inscriptions and traces of offerings testify. The excavations of Paolo Orsi in the latomie of Syracuse and Acre, in the rock or cave sanctuaries of Noto and Acre itself, and in the upper terrace of the theatre of Syracuse, suggested the main recipients of such worship were some “minor” deities like the Nymphs, the Muses or the Paides, and above …