1,720,976 research outputs found
Un accordo segreto. La trattativa di Leopoldo de' Medici e Cosimo III con il marchese Antonio Tassi (1670-1672)
No full textL'articolo analizza la trattativa che nella seconda metà del Seicento ha consentito al principe e cardinale Leopoldo de' Medici e al granduca di Toscana Cosimo III di acquisire alcuni pezzi della collezione del marchese Antonio Tassi e della moglie Sulpizia Vitelleschi, per tramite dell'agente romano Ottavio Falconieri
Empirical fragility curves for settlement-affected buildings: Analysis of different intensity parameters for seven hundred masonry buildings in The Netherlands
Get PDFThe analysis and prediction of damage to buildings resting on highly compressible fine-grained ‘‘soft soils” containing (organic) clay
and peat are key issues to be addressed for a proper management of subsidence-affected urban areas. Among the probabilistic approaches suggested in literature, those oriented to the generation of empirical fragility curves are particularly promising provided that a comprehensive dataset for both the subsidence-related intensity (SRI) parameters and the corresponding damage severity to buildings is available. Following this line of thought, in the present paper, a rich sample of more than seven hundred monitored (by remote sensing) and surveyed masonry buildings – mainly resting with their (shallow or piled) foundations on soft soils – is analysed in four urban areas of The Netherlands. Probabilistic functions in the form of fragility curves for building damage are retrieved for three different SRI parameters (i.e., differential settlement, rotation and deflection ratio) derived from the processing of Synthetic Aperture Radar (SAR) images by way of a differential interferometric (DInSAR) technique in combination with the severity levels of the damage recorded from the visual inspection of over 700 masonry buildings. As a novelty with respect to earlier similar studies, the work points out the methodological steps to be followed in order to identify the most appropriate SRI parameter among the selected ones. Thus, the objective of the paper is to improve the existing geotechnical forecasting tools for subsidence-affected urban areas, in order to target areas that require more detailed investigations/analyses and/or to select/prioritize foundation repairing/replacing measures
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
Analisi e previsione del danno di edifici con differente tipologia fondale in terreni di alta compressibilità: due casi di studio nei Paesi Bassi
No full textL’impiego del monitoraggio per il controllo del comportamento di edifici in aree subsidenti è estremamente utile nella programmazione di interventi mirati alla loro salvaguardia; tuttavia, il ricorso a tecniche di monitoraggio classiche può risultare economicamente svantaggioso nel caso di aree urbanizzate di rilevante estensione. Un prezioso contributo in tale direzione è fornito da tecniche di monitoraggio avanzate, quali quelle che si avvalgono della interferometria differenziale (DInSAR). La presente comunicazione illustra una procedura mirata alla generazione – su base empirica – di curve di fragilità per edifici in muratura soggetti a cedimenti differenziali mediante l’utilizzo combinato di dati DInSAR e di informazioni acquisite con rilievi del danno in sito. La procedura è applicata nelle aree urbanizzate di due Comuni dei Paesi Bassi dove gli edifici presentano una diversa tipologia fondale (superficiale o profonda) posta in terreni di alta compressibilità. Si valuta, infine, l’efficacia delle opere di ripristino di una fondazione su pali operando un confronto tra gli andamenti dei cedimenti del relativo edificio nel tempo osservati, in condizioni pre- e post-intervento, con la tecnica DInSAR
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
Dispelling 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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