196,043 research outputs found
Environmental monitoring: landslide assessment and risk management (Test site: Vernazza, Cinque Terre Natural Park)
No full textNatural disasters, whether of meteorological origin such as cyclones, floods, tornadoes and droughts or having geological nature such as earthquakes, volcanoes and landslide, are well known for their devastating impacts on human life, economy and environment. Over recent decades, the people and the societies are becoming more vulnerable; although the frequency of natural events may be constant, human activities contribute to their increased intensity. Indeed, every year millions of people are affected by natural disasters globally and, only in the last decade, more than 80% of all disaster-related deaths were caused by natural hazards. The PhD work is part of the activities for the support and development of methodologies useful to improve the management of environmental emergencies. In particular, it focused on the analysis of environmental monitoring and disaster risk management, a systematic approach to identify, to assess and to reduce the potential risks produced by a disaster. This method (Disaster Risk Management) aims to reduce socio-economic vulnerabilities and deals with natural and man-made events. In the PhD thesis, in particular, the slope movements have been evaluated. Slope failures are generally not so costly as earthquakes or major floods, but they are more widespread, and over the years may cause more property loss than any other geological hazard. In many developing regions slope failures constitute a continuing and serious impact on the social and economic structure. Specifically, the Italian territory has always been subject to instability phenomena, because of the geological and morphological characteristic and because of "extreme" weather events that are repeated more frequently than in the past, in relation to climate change. Currently these disasters lead to the largest number of victims and damages to settlements, infrastructure and historical and cultural environmental, after the earthquakes. The urban development, especially in recent decades, resulted in an increase of the assets at risk and unstable areas, often due to constant human intervention badly designed that led to instability also places previously considered "safe". Prevention is therefore essential to minimize the damages caused by landslides The objectives of the conducted research were to investigate the different techniques and to check their potentiality, in order to evaluate the most appropriate instrument for landslide hazard assessment in terms of better compromise between time to perform the analysis and expected results. The attempt is to evaluate which are the best methodologies to use according to the scenario, taking into consideration both reachable accuracies and time constraints. Careful considerations will be performed on strengths, weaknesses and limitations inherent to each methodology. The characteristics associated with geographic, or geospatial, information technologies facilitate the integration of scientific, social and economic data, opening up interesting possibilities for monitoring, assessment and change detection activities, thus enabling better informed interventions in human and natural systems. This is an important factor for the success of emergency operations and for developing valuable natural disaster preparedness, mitigation and prevention systems. The test site was the municipality of Vernazza, which in October 2011 was subject to a extreme rainfall which led to the occurrence of a series of landslides along the Vernazzola stream, which have emphasized the flood event that affected the water cours
Principali interventi effettuati per la rimessa in funzione del gravimetro assoluto IMGC-02
No full textA seguito di alcuni malfunzionamenti che hanno causato il fermo del gravimetro assoluto
IMGC-02 e alla normale usura di alcuni componenti, si sono resi necessari diversi interventi
sia a livello hardware che a livello software per il ripristino e miglioramento del suo
funzionamento. Tale documento ha lo scopo di creare una memoria dei recenti interventi
effettuati a partire dal 2021 nell’ottica di facilitare gli interventi futuri anche da parte di
persone diverse dagli scriventi.
L’intervento principale ha riguardato la sostituzione dello chassis del PXI contenente il
modulo CPU deputato alla gestione dell’intero sistema mediante il software LabView® che
presentava arresti anomali in fase di elaborazione dei dati di lancio. Si è reso necessario un
lungo lavoro di ricerca “storica” di driver e versioni del software LabView® che garantisse la
compatibilità ed il supporto di tutti i componenti hardware vecchi e relativamente nuovi, ma
non più supportati da parte del costruttore. Anche il ripristino di alcune librerie Fortran® ha
richiesto un notevole impegno in quanto il sistema operativo più recente utilizzabile è
risultato essere Windows XP®.
Sono stati inoltre effettuati numerosi interventi a livello meccanico, elettrico e software per
rendere l’operatività del sistema più affidabile, robusta e orientata all’utilizzo in campo. Tra
gli interventi principali effettuati vi sono: sostituzione guide a ricircolo di sfere del sistema di
lancio, correzione configurazione driver del motore brushless per la movimentazione del
carrello di carico, rinnovo dei cablaggi, saldature e inserimento calze di schermatura,
inserimento di un extra-corsa elettrico e miglioramento dell’extra-corsa meccanico di arresto
del carrello di lancio (per evitare la messa fuori uso del sistema di lancio per perdita sfere).
Inoltre: sono state acquistate (con relativa scorta) nuove finestre ottiche e migliorata la
relativa sede, si sono introdotti distanziali di protezione per la finestra ottica della campana
in vuoto, caratterizzata e monitorata nel tempo l’unità di controllo del laser Winters M100 e
sostituito il tubo laser dell’unità interferometrica (trattato in un RT a parte).
Infine: riprogettato il sistema di movimentazione carrelli, eliminate le interferenze nel braccio
del sismometro (con conseguente blocco), sviluppati SW per monitoraggio e
movimentazione indipendente delle parti del gravimetro e sensori, migliorato il software di
gestione (introdotti e riorganizzati in maniera più intuitiva indicatori e campi inserimento dati),
migliorato SW analisi GravisoftPP (riorganizzando in maniera più sinergica le informazioni
necessarie), risigillati gli accoppiamenti campana vuoto-flange di fissaggio.
A seguito del ripristino completo della funzionalità dello strumento, è stato possibile
partecipare alle attività previste dal progetto PRIN 2020FR2JHF ed al confronto
internazionale EURAMET.M.G-K2.2023 tenutosi a Wettzell lo scorso giugno 2024
Le misure per l’incontro tra la domanda e l’offerta di lavoro
No full textSOMMARIO: 19.1. La manutenzione del modello di organizzazione e disciplina del mercato del lavoro di cui alla legge Biagi. – 19.2. Regimi particolari di autorizzazione all’incontro tra la domanda e l’offerta di lavoro. – 19.2.1. I siti internet. – 19.2.2. Il placement universitario. – 19.3. Modifiche al regime ordinario e speciale di autorizzazione. 19.4. Il (faticoso) rilancio della borsa lavoro
Taratura vibrometri secondo la norma ISO 16063-41 “Methods for the calibration of vibration and shock transducers Part 41: Calibration of laser vibrometers"
No full text
Le linee guida sui tirocini formativi e di orientamento
No full textSOMMARIO: 1. I tirocini formativi e di orientamento nella regolamentazione nazionale e regionale. – 2. La riforma tra vecchie questioni irrisolte e nuove criticità. – 3. Nota bibliografica
Dr. Duane M. Jackson, Morehouse College, July 2011
No full textThis video is a conversation with Dr. Duane M. Jackson. Dr. Jackson talks about his paper, "Recall and the Serial Position Effect: The Role of Primacy and Recency on Accounting Students' Performance." Jackie Daniel, AUC Woodruff Library, is the interviewer
"Reflections on the subject of Emigration from Europe with a view to Settlement in the United States" By M. Carey.
No full text"Reflections on the subject of Emigration from Europe with a view to Settlement in the United States: containing bried sketches of the moral and political character of those states.
By M. Carey, member of the American philosophical, and of the American Antiquarian Society, and author of The Olive Branch, Cindiciae Hibernicae, essays on banking, on political economy, and on internal improvement.
To which are now added the English editor's comments on the subject; together with Important Advice to Emigrants, and Cautions Against Impositions Practiced in the Outports
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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