1,720,958 research outputs found
Structural monitoring by the Italian Department of Civil Protection and the case of 2009 Abruzzo seismic sequence
No full textThis paper describes the accelerometric monitoring of buildings carried out by the Italian Department of Civil Protection (DPC) during the seismic aftershock sequence that hit Abruzzi (Italy) in 2009. This activity is illustrated in the framework of the whole DPC action in the field of seismic monitoring of civil structures. To this end a short description of the "Seismic Observatory of Structures", a permanent seismic monitoring network managed by DPC, is provided, and methods used for selecting, studying and modeling structures are presented. Particular attention is devoted to procedures and techniques used for data analysis and damage assessment. Finally, the case study of the town hall building of Pizzoli is shown to illustrate the results that can be obtained from measurement of the building response to aftershocks
Tecniche di valutazione della capacità prestazionale di edifici in cemento armato: applicazione agli edifici di Bonefro.
No full textI due edifici di Bonefro (CB) di proprietà IACP colpiti dal sisma del 31 ottobre 2002 rappresentano un caso di studio di notevole interesse per il settore dell’assessment sismico di edifici esistenti. Infatti i dati messi a disposizione dal Dipartimento della Protezione Civile Nazionale attraverso il progetto BOB-CODE comprendono significative informazioni sulle caratteristiche geometriche, meccaniche e costruttive dei due edifici nonché registrazioni sperimentali di vibrazione degli stessi. Allo stesso tempo è disponibile il quadro dei danni provocati dal terremoto. La particolare valenza per l’applicazione di tecniche di assessment nasce dalla disponibilità delle informazioni dette, ma anche dalla incompletezza delle stesse (livelli di conoscenza).
Obiettivo dello studio proposto è l’identificazione dell’assetto geometrico-costruttivo dell’edificio maggiormente danneggiato a quattro piani (Edificio 4P) a seguito delle due scosse principali verificatesi nel corso della sequenza sismica iniziata il 31 ottobre 2002, in-sieme con la caratterizzazione quantitativa delle scosse medesime in termini di accelerazione strutturale e PGA. L’obiettivo è perseguito con una serie di attività finalizzate: 1) alla redazione e aggiornamento di modelli in campo lineare e non lineare ed al loro utilizzo per le relative analisi, 2) alla interpretazione dei danni subiti dai due edifici, 3) all’analisi dei dati sperimentali
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
Appropriate 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
Confronto sperimentale di diversi sistemi di isolamento sismico su telaio in scala 1:2.5
No full textDispelling the Myths Behind First-author Citation Counts
Get PDFWe 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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