1,721,105 research outputs found
Microzonation study in the Paganica-San Gregorio area affected by the April 6, 2009 L’Aquila earthquake (central Italy) and implications for the reconstruction,
No full textThe earthquake of April 6th, 2009 in the L’Aquila area is one of the largest seismic
events of the last years in Italy. The event, that caused significant damage in a large area
of the Abruzzo region (cental Italy) and site amplification phenomena which were recorded
even at large distances from the epicentre. After the emergency period, a detailed study of
the surface effects was necessary for the post-earthquake reconstruction, but in a way it
should be carried out rapidly enough to give instructions to urban planners, codes to public
administrators and information to engineers. A team of surveyors were trained to collect
field information such as geologic and geomorphologic features and geotechnical or geophysical
information. The seismic inputs, for the numerical analyses, were provided, and the
collected information were analyzed with the aid of dynamic codes to calculate the possible
local site effects. The results are presented as acceleration response spectra, amplification
coefficients (FA, FV and FH) and microzonation maps, aimed to urban planning and project
design. In particular the more dangerous areas, affected by the higher amplification effects,
were identified. Finally a comparison between the results obtained by the numerical analyses
and the results derived from an experimental field analysis, measuring both earthquake weak
motion and ambient noise, were performed. In this paper we present the results for one of the
most severely damaged area (up to IX-X MCS), the Paganica–Tempera–Onna-San Gregorio
area, located 6 to 10 km east of the April 6th main shock
Evaluation of site effects after the 2009 Abruzzo Earthquake using numerical and experimental analyses for the reconstruction planning
No full textThe earthquake of April 6th, 2009 in L’Aquila area is one of the largest seismic events of the last years in Italy. The events, that caused significant damage in a large area of Abruzzo regions (cental Italy) and site amplification phenomena, were recorded even at large distances from the epicentre. After the emergency period, a detailed study of the surface effects was necessary for the post-earthquake reconstruction, but in a way it should be carried out rapidly enough to give instructions to urban planners, codes to public administrators and information to engineers. A team of surveyors were trained to collect field information such as geologic and geomorphologic features and geotechnical or geophysical information. The expected seismic inputs were provided, and the collected information where analyzed with the aid of dynamic codes to calculate the possible local site effects. The results are presented as response spectra and amplification coefficients. In this paper the results for one of the most severely damaged area (up to IX-X MCS), the Paganica – Tempera – Onna - San Gregorio area, located 6 to 10 km east of the April 6th main shock, are presented
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
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
Definition of seismic input from fault-based PSHA: remarks after the 2016 Central Italy earthquake sequence
Get PDFAppropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Multidisciplinary seismotectonics of a low-angle normal fault system (Lunigiana- Garfagnana grabens, Italy)
No full textStudio di suscettibilità a liquefazione di sedimenti fini nel bacino del fucino (Avezzano, AQ): analisi XRD in supporto alle prove geotecniche
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