Search results for " Be [Stars]"

showing 10 items of 55 documents

Implementare il patrimonio archivistico: ricostruzione virtuale di una villa non realizzata di Giuseppe Samonà in Sicilia

2023

Questo saggio vuole essere una testimonianza dell’importanza culturale e cognitiva degli archivi (del progetto) intesi come patrimonio pubblico. L’azione di re-immaginarli può costituire un veicolo per la loro conoscenza? Con l’analisi di un caso-studio di un’abitazione non realizzata di un architetto del Novecento come Giuseppe Samonà si prova a verificare l’efficacia degli strumenti digitali per l’interpretazione dell’architettura come mezzi per l’implementazione comunicativa di un archivio.

Settore ICAR/17 - DisegnoThis essay is a testimony to the cultural and cognitive importance of (project) archives as public heritage. Can the action of re-imagining them be a vehicle for their knowledge? With the analysis of a case study of an unrealised house by a 20th century architect such as Giuseppe Samonà an attempt is made to verify the effectiveness of digital tools for the interpretation of architecture as a means for the communicative implementation of an archive.

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Rateless Codes Performance Analysis in Correlated Channel Model for GEO Free Space Optics Downlinks

2012

Settore ING-INF/03 - TelecomunicazioniFree Space Optics (FSO) technologies for satellite communications offer several advantages: wide bandwidth high rate capability immunity to electromagnetic interference and small equipment size. Thus they are suitable for inter-satellite links deep space communications and also for high data rate ground-to-satellite/satellite-to-ground communications. Nevertheless FSO links suffer impairments that cause power signal degradation at the receiver. Scattering and absorption cause power signal attenuations predictable by suitable deterministic models. Optical turbulence causes random irradiance fluctuations which can generate signal fading events and can thereby only be predicted by statistical models. Attenuation and fading events can corrupt FSO links and so it would be recommended to add mitigation error codes on the communication link. FSO channel can be described as an erasure channel: fading events can cause erasure errors. We have identified in rateless codes (RCs) a suitable solution to be employed in FSO links. RCs do not need feedback and they add a redundant coding on the source data that allows the receiver to recover the whole payload despite erasure errors. We implemented two different of rateless codes: Luby Transform (LT) and Raptor. We analyzed their performances on a simulated turbulent GEO FSO downlink (1 Gbps - OOK modulation) at a 106 μm wavelength and for different values of zenith angles. Assuming a plane-wave propagation and employing Hufnagel-Valley we modeled the downlink using: 1) a temporal correlated channel model based on Gamma-Gamma probability distribution and 2) an irradiance covariance function that we converted on a time function using Taylor frozen eddies hypothesis. Our new channel model is able to simulate irradiance fluctuations at different turbulence conditions as it will be shown in the full paper. We will also report performance results of LT and Raptor codes at overhead range varying between 0 and 50% and for different values of source packets.Settore ING-INF/01 - Elettronica

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Il delitto di "caporalato" tra diritti minimi della persona e tutela del mercato del lavoro

2020

Il contributo analizza il reato di intermediazione illecita e sfruttamento lavorativo, offrendo un’analisi comparata con il sistema repressivo tedesco. Lo studio si sofferma, in particolare, sui limiti di legittimazione del diritto penale nella punizione dei fatti di “caporalato”, nel tentativo di scongiurare che l’intervento repressivo nelle dinamiche economiche e contrattuali, di natura sinallagmatica, possa assumere una portata tale da porsi in contrasto con il canone della sussidiarietà. A tal fine, si suggerisce una prospettiva ermeneutica che incentri il disvalore penale del reato di cui all’art. 603-bis c.p. sulla lesione dei diritti fondamentali del lavoratore – riconducibili agli a…

Settore IUS/17 - Diritto PenaleThe paper analyses the offence of unlawful work intermediation and exploitation offering a comparative analysis with the German punitive system. The study focuses in particular on the limits of legitimacy of criminal law in the punishment of gangmaster acts in the attempt to avoid that the punitive intervention in economic and contractual dynamics of a mutual nature could be so intrusive to be in contrast with the principle of subsidiarity. To this end the author suggests an interpretative perspective that centres the penal disvalue of the offence under article 603-bis of the criminal code on the harm to fundamental workers’ rights – as linked to articles 4 35 and 36 of the Italian Constitutions – which work as a limit to entrepreneurial freedom. To be sure the indexes of exploitation listed by the criminalising norm seem to echo those fundamental human rights attributed to a person as a worker: those very same rights that – when harmed in their minimal and therefore intangible dimension – legitimise the intervention of the ius terribile. The article also stresses the protection of the job market: in this sense the offence – even if situated within the Kernstrafrecht – represents a new paradigm of the institutional response within the framework of the contemporary relationships between law and economics.

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Note di Abū Naṣr al-Fārābī sulla verità e falsità dell’astrologia

2020

Il presente contributo propone l’introduzione, la traduzione italiana e il commento delle Note sulla verità e falsità dell’astrologia (Nukat fī mā yaṣiḥḥu wa-mā lā yaṣiḥḥu min aḥkām al-nuǧūm) di Abū Naṣr al-Fārābī (m. 950). Tale scritto non è stato trasmesso direttamente dal suo autore né ci è giunto nella sua redazione definitiva, bensì in forma di appunti ricopiati da un grammatico di nome Abū Isḥāq al-Baġdādī. In trenta brevi capitoli al-Fārābī spiega ciò che è accessibile e ciò che è inaccessibile alle predizioni astrologiche e quali aspetti di tale scienza sia opportuno accogliere o respingere.

Settore L-OR/10 - Storia Dei Paesi IslamiciThis article offers the introduction the Italian translation and the commentary of the Notes on Admissible and Inadmissible Astrological Judgements (Nukat fī mā yaṣiḥḥu wa-mā lā yaṣiḥḥu min aḥkām al-nuǧūm) by Abū Naṣr al-Fārābī (d. 950). It was not transmitted directly by its author and did not reach us in its definitive version but only in the form of notes copied by a grammarian named Abū Isḥāq al-Baġdādī. In thirty short chapters al-Fārābī writes down what is accessible and what is inaccessible to astrological predictions which elements of this science should be accepted and which ones are to be rejected.

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Appropriazione e (ri)semantizzazione dello spazio urbano: lo sport in una piazza palermitana

2019

Il contributo, attraverso uno studio di campo, con un approccio geografico culturale esplora le modalità attraverso cui uno spazio urbano, piazza Vittorio Emanuele Orlando a Palermo, può essere oggetto di complessi processi di (ri)semantizzazione. La piazza diviene infatti luogo per sport giovanili improvvisati, al centro di dialettiche opposte (ufficialità/improvisazione) e di forme multistratificate di socialità e aggregazione.

The chapter through a field study with a cultural geographical approach explores the ways in which urban space Piazza Vittorio Emanuele Orlando in Palermo can be the subject of complex processes of (re) semantization. In fact the square becomes a place for improvised youth sports at the center of opposing dialectics (official/improvisation) and multi-layered forms of socializing and aggregation.

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Non-Linear Hysteretic Instability in Rotating Machinery

2013

The destabilizing influence of the shaft hysteresis on the supercritical whirl of rotating machines can be efficiently counterbalanced by proper external dissipative sources in the supports and/or anisotropic suspension systems. The hysteretic effect may be treated either by dry or viscous models obtaining different but somehow similar results in the hypothesis of small dissipation levels. Thus the linear viscous assumption is often accepted as a crude approximation for a straightforward analysis of the whirling instability. Nevertheless the internal friction should be regarded most likely as non-linear and could be approximated for example by Coulombian models taking thus into account also the releasing effect of some shrink-fit coupling present in the mechanical assembly.

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Rapid and eco-friendly synthesis of graphene oxide-silica nanohybrids

2014

The increasing interest in Graphene oxide (GO) is due to many issues: the presence of both sp2-conjugated atoms and oxygen-containing functional groups provides a strong hydrophilicity and the possibility to further functionalize it with other molecules (i.e. π-π interactions covalent attachment etc.) [1]. Furthermore since the GO is biocompatible and noncytotoxic many studies have been recently focused on the development of GO-based nanodevices for bioimaging DNA detection drug delivery. Due to their low cytotoxicity and large internal surface area silica nanoparticles have been taken into account as promising material for biolabeling and drug loading/delivery. Particular consideration has recently been demonstrated for GO-silica composites because of the potentialities for electrical applications their chemical inertia and stability toward ions exposure. The possibility to combine the extraordinary properties of GO and silica offers several advantages for the realization of nanoprobes for biological applications and of biosensor [12]. The strategy for the fabrication of GO-nanosilica nanohybrids can be schematized as follows: (i) synthesis of GO by oxidizing graphite powder with the method described by Marcano et al. [3] (ii) Preparation of oxygen-loaded silica nanoparticles by thermal treatments in controlled atmosphere in order to induce high NIR emission at 1272 nm from high purity silica nanoparticles. (iii) preparation of GrO-silica nanohybrid films via rapid solvent casting in water. The nanohybrids were tested by XPS FTIR Raman analysis UV photoluminescence analysis TGA Zeta potential measurements electrical tests AFM and SEM. Several nanohybrids were prepared by combining two different typologies of GO and two different samples of silica.

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Canopy Architecture Appraisal by Fractal Dimension of 'Flordastar' Peach Trees Grafted onto Different Rootstocks

2007

The objective of this research was to evaluate the modification of canopy architecture of ''Flordastar'' peach (Prunus persica L. Batsch) grafted onto rootstocks with different vigour by the use of fractal dimension (D). The hypothesis was that different vigour rootstocks are able to modify the complexity of the branching pattern and that this effect can be assessed by a geometric parameter such as the fractal dimension (D) of the 2D projection of tree branching structure. The observations were carried out in a four-year-old experimental orchard of cv. ''Flordastar'' peach trees grafted onto Ishtara Barrier GF677 and MrS 2/5 rootstocks. On digital pictures of leafless dormant peach trees the tree skeleton was manually depicted by an image analysis software to measure total length and angles of insertion of branches. Bitmaps of the skeleton were then subjected to a specific software (FDCALC) able to calculate D by the "box counting" method. To account for the error introduced by analyzing a three dimensional structure with its 2D projection measurements were done on two images per tree taken from two different viewing angles. Results are shown in relation to tree vigour of the scion/stock combination. Fractal dimension was related to the vigour ranking of the graft combinations tested. In particular vigorous scion/stock combinations showed the highest D.HorticultureCanopy architectureHorticultureRootstockFractal dimensionMathematics

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Abitare nel reale. Dalla crisi della periferia alla tessitura di nuove relazioni contestuali

2019

I progetti redatti per “Palermo Sud-Est” sono il risultato di un Laboratorio di Laurea strutturatosi attraverso incontri, seminari, comunicazioni specialistiche, esposizioni critiche, che – in una strategia condivisa – ha visto ogni studente elaborare il proprio lavoro nel confronto con gli altri attori del Laboratorio stesso. La ricerca sui “progetti urbani” è stata impostata di modo che ogni laureando fosse messo a conoscenza dei progetti svolti nello stesso ambito territoriale dai colleghi che l’avevano preceduto, così da poter operare in continuità e contribuire a formulare un ragionamento unitario, nel quale ogni progetto costituisse continuazione, verifica o anche variante dei precede…

The projects prepared for "Palermo South-East" are the result of a Graduate Laboratory structured through meetings seminars specialist communications critical exhibitions which - in a shared strategy - saw each student elaborate their work in comparison with others actors of the same Laboratory. The research on "urban projects" was set so that each graduating student was made aware of the projects carried out in the same geographical area by the colleagues who had preceded it so as to be able to operate in continuity and contribute to formulating a unitary reasoning in which each project constituted continuation verification or even variant of the previous ones. These coordinated works have pursued two fundamental objectives: the strengthening of infrastructures and the establishment of specialized public buildings with superior functions aimed at requalifying and regenerating various critical situations with particular attention to the relationship between context and life scenarios. Thus each designer while dealing with a main functional program simultaneously deals with various issues such as the rationalization of the road system the redevelopment of existing buildings the design and refunctionalization of urban services (for example the transformed Central Station in the hotel or the project of a great Mosque)several degree theses have addressed as the main theme or as a question in the background the design of a new bed for the Oreto river and the relative establishment of a park facing it. In this desire to "patch up the wounds" in the different areas of "Palermo South-East" in close relationship with the vicissitudes of the place there is a continuous reference to architectures of all time and some questions involving the functional program are suggested - that identifies the character (or perhaps "type") of what is to be inserted in a given context - and the qualities of living reality as a pivotal material in the design process.Settore ICAR/14 - Composizione Architettonica E Urbana

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Le solo imprévu : l?atelier d?improvisation comme lieu d?échanges entre cultures d?audition

2021

Starting from sociologist Anne-Marie Green?s idea of ?common space?, and from Hans Robert Hauss? reception theory, the improvisation workshop is thought to be a way of transforming the practices of reception, in order to modify the nature of the culture of listening of each listener. Four research axis are, then, proposed, from the validation of the personal experience of the participants to the reception of the instant?s surprise as a factor of education, including the research of communicational tools specific to reception of music, capable of captivating the listeners with the original aspects of the unknown musical territories.

UNESCO::CIENCIAS DE LAS ARTES Y LAS LETRASrevista de investigación musical: territorios para el arte 590908 2021 7 8182064 Le solo imprévu : l?atelier d?improvisation comme lieu d?échanges entre cultures d?audition Dutrathe improvisation workshop is thought to be a way of transforming the practices of receptioncapable of captivating the listeners with the original aspects of the unknown musical territories. 165 186Arthur Starting from sociologist Anne-Marie Green?s idea of ?common space?territorios para el arte 590908 2021 7 8182064 Le solo imprévu : l?atelier d?improvisation comme lieu d?échanges entre cultures d?audition Dutra [revista de investigación musical]2386-8260 13268 Itamarproposedthenincluding the research of communicational tools specific to reception of music:CIENCIAS DE LAS ARTES Y LAS LETRAS [UNESCO]from the validation of the personal experience of the participants to the reception of the instant?s surprise as a factor of educationand from Hans Robert Hauss? reception theoryin order to modify the nature of the culture of listening of each listener. Four research axis are

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