2,633 research outputs found
Testing the reliability of mini-UAVs acquisition campaign on detailed bas-reliefs. The case study of sculpturing elements of Donatello's Pulpit
No full textThe need to achieve a complete three-dimensional database has seen an increasing use of UAV systems in architectural surveying. In particular, special types of drones -mini-UAVs- are increasingly being used for surveys within historical centres or in critical areas. Through the case study of the documentation of Donatello's Pulpit at Cathedral of Santo Stefano in Prato, the paper aims to evalu-ate the acquisition’s reliability by mini-UAV of an architectural element characterized by a high level of detail. The evaluation is carried out comparing the results obtained by drone with those obtained by proven techniques of terrestrial laser scanner and photogrammetric survey
Seismometric monitoring of hypogeous failures due to slope deformations
No full textResults from a seismometric monitoring of rock mass failures affecting a karstified slope are here presented. The slope, located in Central Apennines (Italy), hosts a drainage plant and is involved in gravity-induced deformations. Starting from September 4, 2008 four accelerometric stations were installed within the tunnels of the drainage plant. More than 1,000 events, referred to both earthquakes and hypogeous rock mass failures, were recorded. The frequencies of occurrence of earthquakes and rock mass failures result to be generally well correlated; nevertheless, many hypogeous instabilities can be directly associated to the continuous slope deformations. The trend of the cumulative Arias intensity derived for the hypogeous instabilities shows a time variable rate which was used as a tool for monitoring the deformational process of the slope as well as for managing the associated geological risk by the use of alert or alarm plans. © Springer-Verlag Berlin Heidelberg 2013
Who is the author of the 1876 Stefano manuscript?
No full textFor over one hundred years the Stefano manuscript was a private document in the possession of the Baccich family and descendants. It told a story of the 1875 Stefano shipwreck as narrated by the shipwreck survivor and the founding family patriarch Miho Baccich. In these circumstances the question of authorship of the manuscript was immaterial and did not arise as an issue. However, with the publication of the manuscript the author‟s name, or names, need to be formally attributed to it. It turns out that this is not such a clear-cut matter.
As we shall see, all informed sources attributed the authorship, and the ownership, of the manuscript to Miho Baccich. But the manuscript itself was written by Canon Stjepan Skurla – a priest from Miho‟s hometown of Dubrovnik. The question then arises: should Skurla also be considered as an author of the manuscript, or, even as the sole author (as some would have it)
Microseismicity due to gravity-induced rock-mass deformations and a related alarm system
No full textNanoseismic monitoring of gravity-induced slope instabilities for the risk management of an aqueduct infrastructure in Central Apennines (Italy)
No full textA monitoring system is operative in the Peschiera Springs slope (Central Apennines, Italy) to mitigate the landslide risk related to the hosted main drainage plant of Rome aqueducts by providing alert warning. Such a strategy allows to avoid out-of-service episodes so reducing extra-costs of water distribution management. The Peschiera Springs slope is involved in a rock mass creep characterized by an average steady strain rate of 1 mm year-1 and responsible for several landforms including sinkholes, subvertical scarps and trenches. Moreover, an average aquifer discharge of 19 m3 s-1 causes an intense limestone dissolution concentrated in correspondence with release bands and discontinuities that dislodge the jointed rock mass. Since 2008, an accelerometric network has been operating within the slope; about 1300 microseismic local events were recorded up to now, distinguished in failures and collapses. A control index, based on frequency of occurrence and cumulative energy of the recorded microseismic events was defined to provide three levels of alert. In 2013, a temporary nanoseismic Seismic Navigation System (SNS) array was installed inside a tunnel of the drainage plant to integrate the pre-existent seismic
monitoring system. This array allowed to record 37 microseismic events, which locations are in good agreement with the evolutionary geological model of the ongoing gravitational slope deformation. In 2014, a permanent nanoseismic SNS array was installed in the plant
and allowed to record several sequences of underground collapses including more than 500 events. The nanoseismic monitoring system is allowing to: (1) increase the detection level of the monitoring system; (2) locate hypocentres of the events; and (3) detect precursors of
the strongest events
Fashion Culture: Power In Fashion with Stefano Tonchi and Grazia d'Annunzio
No full textStefano Tonchi, global chief creative officer for L’Officiel Group, and Grazia d’Annunzio, former deputy director of Vogue Italia, discuss the power of military uniforms and their influence on high fashion. Tonchi is co-author of the book "Uniform: Order and Disorder.
Seismic monitoring of the gravity-induced deformation involving the Peschiera Spring slope (Italy) for the management of a main infrastructure
No full textThe Peschiera Spring slope (Central Apennines, Italy), which hosts the tunnels of the main drainage plant of Rome aqueducts, is involved in a gravity-induced slope deformation. An average aquifer discharge of about 18 m3/s is responsible for an intense limestone dissolution corresponding to the main kinematic elements that dislodge the jointed rock mass. Since 2008 a seismometric network was installed within the tunnels of the drainage plant for detecting local underground instabilities consisting of failures and collapses. About 1000 signals due to instabilities were recorded up to now. A control index (CI), based on both the frequency of occurrence and the cumulative energy of the recorded local instabilities was tested for providing three levels of alert. During the 2014 a total of 32 collapse crises were recorded, that caused several “emergency” states of the plant
Modellazione numerica bidimensionale della risposta sismica nel comune di Accumoli
No full textIn the present study the evaluation of the local seismic response of the Municipality of Accumoli (RI) was carried out through a bidimensional numerical modeling along a geological cross section in the valley of the Tronto River. The here performed modelling integrates the results from previous studies aimed at level 3 seismic microzonation after the 2016-2017 seismic sequence in Central Italy, obtained for a Return Time (RT) of 475 years only.
From the geological point of view, the study area is characterised by an alluvial body composed of clastic soils ascribable to river terraces and fluvial deposits overlaying a marly-arenaceous bedrock, represented by the Flysch della Laga Formation. Amplification functions were obtained via 2D numerical modelling that allowed to analyze the seismic amplification of the study area, for RT of 975 and 2475 years. The numerical outputs were obtained through the LSR2D software (by Stacec S.r.l.): a discretization in triangular meshes with a resolution of 3 m, free-field conditions to the lateral boundaries of the model and a kinematic constraint on the vertical motion at the base of the numerical domain (inside the seismic bedrock) were assumed. Moreover, an equivalent linear solution was adopted and a visco-elastic rheological behavior was attributed to the considered material. A one-dimensional modeling (by STRATA software) was also performed to compare the results with the ones derived from the 2D modeling. The 1D and 2D amplification functions highlighted that the maximum seismic amplification peaks correspond to the middle portion of the valley, which is also characterized by a mainly 1D seismic response, while a not negligible contribution of surface waves propagating from the edges of the alluvial basin can be recognised close to its boundaries. Amplification factors (FA) and elastic response spectra were also obtained along the modelled section. In particular, the computed values of FA, related to the period range 0.1-0.5 s (the most relevant for civil engineering design), were used for the seismic microzonation mapping referred to TR 975 and 2475. The decreasing FA values at the higher TR is justified as a consequence of the more intense non-linear effects. The here experienced methodology, can be regarded as a guideline for further studies of local seismic response, where a similar geological and morphological setting can be surveyed, as well as a reliable tool for seismic risk mitigation in frameworks of urban planning and building design
Introduzione [a I cartolari del notaio Stefano di Corrado di Lavagna]
No full textSaggio introduttivo all’edizione dei frammenti dei protocolli del notaio Stefano di Corrado di Lavagna nel quale viene fatta l’analisi codicologica dei frammenti e si ricostruisce la biografia del notaio. Vengono inoltre esaminate la tipologia dei documenti, le tecniche redazionali del notaio e l’organizzazione burocratica della Chiesa genovese nella seconda metà del secolo XIII.
Introduction essay to the edition of the fragments of the protocols of the notary Stefano di Corrado of Lavagna in which the analysis of the codex fragments and reconstructs the biography of the notary is made by the author. She also examined the types of documents, the technical drafting of the notary and the bureaucratic organization of the Church of Genoa in the second half of the thirteenth century
From Lausanne to Luxembourg: the CJEU’s Seraing Judgment and the Boundaries of Sports Arbitration Under EU Law
No full textIn this expert analysis, Professor Stefano Bastianon dissects the CJEU’s landmark Seraing ruling (Case C-600/23), which reshapes the contours of sports arbitration under EU law. With particular focus on judicial review and EU public policy, the author explores how the Court balances the autonomy of arbitral mechanisms like CAS with the imperative of effective judicial protection — a judgment that could have far-reaching implications for the future of dispute resolution in sport
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