1,720,977 research outputs found
Santi, navi e Saraceni. Immagini e pratiche del mare tra agiografia e storia dalle coste campane a quelle dell’Alto Tirreno (secoli VI-XI)[A. Galdi è responsabile delle pagine intitolate “Le coste campane”, pp. 53-69 (testo), 84-90 (note)]
No full textNella prima parte del saggio, la cui responsabilità è di Amalia Galdi, si prendono in esame alcune fonti agiografiche relative alle coste della Campania, nell’obiettivo di analizzare, dall’ottica particolare di questo tipo di scritture, un fenomeno storico complesso (quale è il mare e tutte le sue valenze) nel periodo compreso tra VIII e XII secolo. Il mare risulta apparentemente assente nell’immaginario delle popolazioni “campane” nell’arco cronologico considerato, se ci si limita alla scarsa presenza di interventi miracolosi sul mare – in merito alla pesca soprattutto, ma anche in generale alla navigazione - rispetto ad altri contesti geografici italiani, e non solo, un dato si è mostrato contrastante con quanto desumibile da documentazione di altro genere. Sono state allora analizzate le motivazioni di tali apparenti discrepanze, ricorrendo sia all’esame sistematico di altre fonti (di natura documentaria, narrativa, archeologica), sia a una più approfondita lettura delle testimonianze agiografiche. Ne è emerso come invece alcuni agiografi, a partire dal IX-X secolo, rinviino a un immaginario del mare ben radicato nelle popolazioni, molto più di quanto apparisse a prima vista, in concomitanza soprattutto con la presenza saracena sulle coste campane; si è dimostrato, inoltre, come anche su quest’ultima si siano misurate identità civiche, spesso divergenti, nella loro rappresentazione agiografica, con quelli che erano gli effettivi rapporti tra le città della costa e i musulmani provenienti dall’Africa, dalla Sicilia o dalla Spagna, segnati da documentate relazioni politiche ed economiche
Le origini del cristianesimo a Sutri attraverso la documentazione archeologica
No full textAnalisi delle fonti agiografiche e letterarie, delle testimonianze archeologiche (soprattutto la catacomba e la chiesa di S. Giovenale) della città di Sutri nell'ottica di una ricostruzione della storia del cristianesimo primitivo nella citt
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Full text link“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
Full text linkWe 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
Full text linkWe 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
Surface damage in silicon substrates after the SiCl4 dry etch of a poly-Si film
No full textThe damage induced by a SiCl4 dry etching of polySi/Si and polySi/SiO2/Si structures to Si substrate surface was studied by measuring the surface recombination velocity and by relating its changes to the damage data obtained by the usual electrical characterization techniques. Different effects of the damage induced by reactive ion etching on the surface recombination velocity were detected. Lattice damage and contamination induce a light increase of the recombination activity, while changes in the morphology of the surface connected to peculiar etching patterns induce a much stronger increase. © 2001 The Electrochemical Society. All rights reserved
Hydrogen-induced boron passivation in Cz Si
No full textAcceptor deactivation in the near-surface region of as-grown, boron-doped Si wafers was detected by in-depth profiles of the free-carrier density obtained by capacitance-voltage measurements. As this deactivation was only observed in wafers subjected to the standard cleaning procedures used in Si manufacturing, we ascribed it to boron passivation by an impurity introduced during the cleaning process. From the study of the free-carrier reactivation kinetics and of the diffusion behaviour of boron-impurity complexes, we have concluded that the impurity is possibly related to hydrogen introduced during the cleaning treatments. The characteristics of the deep level associated with this impurity have been analysed by deep-level transient spectroscopy
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