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La lingua di due commedie inedite di Petrolini, in L’Italia dei dialetti. Atti del convegno. Sappada/Plodn (Belluno) 27 giugno-1 luglio 2007, a cura di G. Marcato, Padova: Unipress, 2008, pp. 207-214. ISBN: 978-88-8098-242-5
No full textLandslide characterization through seismic noise investigation
No full textThe purpose of this study is to evaluate the capabilities of seismic noise data for detection of landslide sliding surfaces using the H/V spectral ratio (Nakamura method). The case study is Passo della Morte landslide, located in the Nord East of Italy (Carnic Alps) along the left side of the Tagliamento River. Its surface is approximately 530 thousand m2 and movements are up to 5 cm/year of on most active zones. The risk associated with this phenomenon is the interference with a National Road (N.R. 52) and two road tunnels. Moreover, Tagliamento River flowing at the landslide toe, a possible damming has to be taken into account. Several studies have been carried out to characterize the landslide behavior, via multiple displacement measuring techniques (laser scanner, GPS, extensimeter, inclinometer, TDR), micro-seismic monitoring systems (seismometer and acoustic emission sensor) and seismic survey (GPR and seismic refraction). The main objectives of this investigation are: determine the depth of landslide sliding surface in various sites and reconstruct its geometry by applying the law [f0=Vs/4H] to the resonance frequencies found with Nakamura method. Measurements sites have been set 200m apart on a regular grid covering all the surface to be monitored. Seismic noise has been recorded using a Lennartz seismometer (LE-3D/5s) connected to a Quanterra Q330 (Kinemetrics) acquisition system. Results have been validated by means of several boreholes performed in the examined area. On the other hand, the H/V spectral ratios in the horizontal plane as a function of the azimuth have been analyzed in order to investigate the directivity in seismic site response on the landslide. The results obtained with this work will be presented
La pesca alle costardelle a Forio d'Ischia, in G. Marcato (a cura), I dialetti e il mare,
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Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Debris flood hazard documentation and mitigation on the Tilcara alluvial fan (Quebrada de Humahuaca, Jujuy province, North-West Argentina)
Get PDFFor some decades, mass wasting processes such as landslides and debris floods have been threatening villages and transportation routes in the Rio Grande Valley, named Quebrada de Humauhuaca. One of the most significant examples is the urban area of Tilcara, built on a large alluvial fan. In recent years, debris flood phenomena have been triggered in the tributary valley of the Huasamayo Stream and reached the alluvial fan on a decadal basis.
In view of proper development of the area, hazard and risk assessment together with risk mitigation strategies are of paramount importance. The need is urgent also because the Quebrada de Humahuaca was recently included in the UNESCO World Cultural Heritage. Therefore, the growing tourism industry may lead to uncontrolled exploitation and urbanization of the valley, with a consequent increase of the vulnerability of the elements exposed to risk. In this context, structural and non structural mitigation measures not only have to be based on the understanding of natural processes, but also have to consider environmental and sociological factors that could hinder the effectiveness of the countermeasure works.
The hydrogeological processes are described with reference to present-day hazard and risk conditions. Considering the socio-economic context, some possible interventions are outlined, which encompass budget constraints and local practices. One viable solution would be to build a protecting dam upstream of the fan apex and an artificial channel, in order to divert the floodwaters in a gully that would then convey water and sediments into the Rio Grande, some kilometers downstream of Tilcara. The proposed remedial measures should employ easily available and relatively cheap technologies and local workers, incorporating low environmental and visual impacts issues, in order to ensure both the future conservation of the site and its safe exploitation for inhabitants and tourists
UNA LOCUZIONE BANDIERA:ODOR DA FRESCHIN
No full textNel rapporto tra costume dialettale e codice nazionale è interessante rilevare l'esistenza di quei "vuoti soggettivi" per cui il parlante, avendo una più sicura competenza di una delle varietà coesistenti e dominando meno l'altra, è talvolta portato a ritenere che alcune forme della sua parlata siano intraducibili nella varietà ufficiale: è il caso di "freschin", fatto dai parlanti veneti bandiera di intraducubilità e di distanza linguistica e culturale tra lingua e dialetto. Il saggio mostra, documentando i dati, come invece la forma sia traducibilissima. Il dato che a questo punto emerge è altrattanto interessante: non bastano osservazioni di ordine linguistico a far accettare al parlante la forma, rifiutata comunque perchè estranea al costume
Geophysic data interperetation of Passo della Morte landslide: Eastern Italian Alps.
No full textThe Passo della Morte block-slide covers a relative large area in the Carnic Alps, along the left side of the Taglia-
mento River, between Forni di Sotto and Ampezzo (N-E of Italy). The high seismicity and the presence of the
landslide increase the risk associated to the interest area. Moreover the large volume of material involved in the
landslide (a few million of cubic meters), the presence of important infrastructure such as the road and two tunnels
which cross the landslide, as well as the presence of the Tagliamento River that flow at the foot of the landslide,
make the area very vulnerable.
This study concerns with the western part of the Deep Seated Gravitational Slope Deformation (DSGSD). It fo-
cuses on the potential instability of a rock slope (crossed by road tunnels) and its connection with the DSGSD
activity. The main objectives of this study are: monitoring the rock mass movement, studying the seismic site ef-
fect and defining the stratigraphic and geological characteristics of involved materials.
Two vibration sensors have been installed inside the potential landslide: a short-period seismometer and a piezo-
electric transducer. The microseismic activity recorded by the sensors has been analyzed, with particular regard to
periods characterized by rapid changes in recorded seismic signals, and then correlated with the precipitation trend
to evaluate the existence of a possible correlation between these phenomena. The microseismic activity study has
highlighted the existence of a close link between microseisms and acoustic emissions recorded respectively by the
seismometer and by the piezoelectric transducer. In addition, the comparison with the rainfall pattern has shown a
direct relationship between different rainfall events and the sharp increase of microseismic activity detected by the
two instruments. The correlation is good, even if acoustic emissions appear to be more sensitive than microseisms
to short duration and low intensity rainfall events.
The seismic site effects and the directivity in seismic site response of the rock mass have been investigated through
the use of Nakamura (1989) method. In particular have been estimated the resonance frequencies and the polariza-
tion directions of seismic energy in three selected sites. All sites have shown a clear evidence of polarization in the
direction of N/NW-S/SE and E/NE-W/SW, compatible with the maximum slope inclination and with the limestone
stratification direction outcropping in this area.
In order to define the stratigraphic and geological characteristics of the materials involved, have been performed
a GPR investigation and an active seismic survey. The first has been useful to identify vertical and horizontal
variations of the lithotypes present, most associated with different degrees of rock fracturing and fluid content.
The seismic investigation has permitted to identify a reflective layer and to determine the propagation velocity of
compression and shear waves of the two layers found
Appraise the structural mitigation of landslide risk via numerical modelling: a case study from the northern Apennines (Italy)
No full textThe Ca’ Lita landslide is a large and deep-seated mass movement located in the northern Apennines, about 70 km west of Bologna (Northern Italy). It consists of a composite landslide that affects Cretaceous to Eocene flysch rock masses and chaotic complexes. Many of the sectors making up the landslide have resumed activity between 2002 and 2006, threatening some villages and an important road connecting several key industrial facilities located in the upper watershed. This paper presents the management of the emergency, dealing with the investigation campaigns (geological, geomorphological and LiDAR surveys, borehole drillings, seismic surveys), with the monitoring (in situ instrumentation) and with the design and construction of mitigation measures. The whole process, from landslide reactivation to date, has been modelled on a numerical basis with the finite difference code FLAC 2D, to assess the efficiency of the mitigation system and to propose further countermeasure works in different scenarios
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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