Search results for " events"

showing 10 items of 472 documents

The geo-hydrologic event in the Peloritan – Ionian area of 2009: debris-flow susceptibility assessment by means of forward logistic regression

2012

On the 1st of October 2009, the area centred on the village of Giampilieri (Messina), on the Ionian side of the Peloritan belt, suffered thousands of landslides activated in the time lapse of about five hours, which caused 36 victims, more than 100 injured and more than 0.5M€ of damage to structures. This unprecedented phenomenon was triggered by an exceptional meteorological event, recorded at the foothills with 250mm of rain in just 8 hours; this amount of rainfall was cumulated to two previous events (16/IX: 75mm; 23/IX: 190mm) for a total amount of more than 500mm in less than two weeks. Due to the peculiar triggering conditions a huge number of debris flows involved the shallow weather…

Settore GEO/04 - Geografia Fisica E Geomorfologiasusceptibility logistic regression EXTREME EVENTS
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Radon Anomalies at Volcano Etna: Identification methods and correlation with geodynamic events

2006

Settore GEO/11 - Geofisica ApplicataRadon Anomalies Geodynamic events Volcano Etna
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Las grandes Exposiciones en Europa: 1992-2002. Efectos duraderos sobre la ciudad y apropiación por parte de la ciudadanía.

2012

This paper studies the influence of great contemporary Expositions on the transformation of cities and of territories, developing some aspects we consider relevant of these events: their growing relevance in urban contemporary politics and the urban and architectural project as creator of the regeneration of abandoned or obsolete areas. Against the short duration of these events, the positive and negative effects, like the definition of new urban and territorial domains, the modernization of infrastructures and services, the impulse of private stakeholders toward building lands and the consolidation of City-Brand in tourism nets among others, have a much longer duration, and depend on the u…

Settore ICAR/14 - Composizione Architettonica E UrbanaExpositions World Events urban change territorial transformations urban tourism Expositions' modelsExposiciones grandes eventos transformación urbana Sevilla Lisboa Suiza
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Urban Events as Cosmopolitan Accelerators and Post-Pandemic Cities: Reflections on Manifesta 12 in Palermo

2021

International events are important opportunities to generate (global) open spaces and networks, and are one of the greatest accelerators of cosmopolitan networks. The global Covid- 19 crisis asks us to rethink the mobility of people and the interconnections between and within cities, where networks and connections are the most powerful accelerators of what we may call the cosmopolitan dimension of urban life. How can we rethink Cosmopolitan Habitat in light of the pandemic? What kinds of international event will we be able to promote from an intra- and post-pandemic perspective? This contribution analyses the experiences of Manifesta 12 in Palermo. The event is explored as a field of experi…

Settore ICAR/21 - Urbanisticacosmopolitan habitat urban events Manifesta 12
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An Active Learning Approach for Classifying Explosion Quakes

2022

In this work, an Active Learning approach for improving the classification of passed seismo-volcanic events is proposed. Here we study the specific case of Explosion Quakes from Stromboli Volcano versus other seismo-volcanic events, recorded as seismograms, and the use of Random Forest as a Classification method. In conformity with the active learning paradigm, the approach recalls the human intervention for the annotation of uncertain data. The uncertainty is established by the event probabilities, predicted by a trained random forest classifier. The human intervention consists of editing and relabelling the data into these main three classes: Explosion Quakes, Non-Explosion Quakes or Non-…

Settore INF/01 - InformaticaMachine Learning for seismo-volcanic eventsActive LearningExplosion Quakes
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Transient behaviour of a “mixed” overhead-cable EHV line under lightning events

2009

Recently, in many countries have been undergone or are planning links with AC extra-high voltage (EHV) underground cables. Cable lines offer the possibility of a reduced environment impact and for this reason they are often the only alternative for the reinforcement or the expansion of power system accepted by public opinion. The coexistence of overhead and cable line in the so called ¿mixed¿ lines, however, raises several questions regarding their behaviour both in steady state and in transient. The purpose of this work is to investigate the transient behaviour of a mixed overhead-cable EHV line under lightning events, describing the effects of the following overvoltages on the system. The…

Settore ING-IND/33 - Sistemi Elettrici Per L'EnergiaTransient behaviour of a “mixed” overhead-cable EHV line under lightning events
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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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An Evaluation of HCI and CMC in Information Systems within Highly Crowded Large Events

2013

Pervasive systems are composed of a large variety of networked smart devices that supposedly enrich the environment they are deployed in. The access to services provided by a pervasive system should be as natural and “unconscious” as possible. In a large number of cases, the available interaction modality seems to be more oriented towards showing off technological wonders rather than to the actual usability of the interface. In this paper we evaluate and compare two different versions of an information provision system deployed in two editions of a large fair. In particular, we will focus on the Human-Computer Interaction (HCI) and Computer-Mediated-Communication (CMC) points of view. The a…

Settore ING-INF/05 - Sistemi Di Elaborazione Delle InformazioniInteractive systems engineeringUbiquitous computingbusiness.industryComputer sciencecognitive loadlarge eventsUsabilityComputer Mediated Communication (CMC)Human-centered computingHuman Computer Interaction (HCI)Social dynamicsHuman–computer interactionInformation systemComputer-mediated communicationbusinessCognitive ergonomics2013 Seventh International Conference on Complex, Intelligent, and Software Intensive Systems
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Il Progetto DIGIT.IISG e le attività culturali dell'Istituto Italiano di Studi Germanici

2020

In this article I present the Digit.IISG project, that is aimed to convert in a digital form all materials inherent to cultural events which happened in the Italian Institute for german studies since its foundation (1932).

Settore L-ART/06 - Cinema Fotografia E TelevisioneIISG digitalization cultural studies cultural events Italy Germany cultural events Heidegger conference
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Semantica dello spazio, del movimento e della maniera

2020

Il volume riunisce una serie di lavori condotti all'interno dei più aggiornati approcci teorici sulla semantica dello spazio del movimento e della maniera. Oltre a focalizzare e a porre in una nuova luce le questioni tradizionali relative al verbo, il volume esplora la possibilità che a veicolare la semantica spaziale o quella della maniera siano anche strutture nominali.

Settore L-FIL-LET/12 - Linguistica Italianamanieramotion eventsspace conceptualizationeventi di movimentomannerconcettualizzazione dello spazioSettore L-LIN/01 - Glottologia E Linguistica
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