1,720,980 research outputs found
Una zecca di falsari nel castello di Godano (La Spezia): note sulla tecnica di produzione e di argentatura delle monete sullo scorcio del Medioevo
No full textTra il 2010 e il 2020 una serie di ricerche storiche e archeologiche si sono concentrate sul castello di Godano, nell’entroterra spezzino. Tali indagini hanno consentito di definire le vicende di questo insediamento tra medioevo ed età moderna. Tra queste sono state individuate le tracce di attività di una zecca non autorizzata, cui si deve probabilmente anche la distruzione della rocca nel 1524. Nel contributo sono presentati i dati dello studio archeologico, archeometrico e numismatico dei materiali recuperati con gli scavi che hanno
consentito di mettere a fuoco diversi processi produttivi impiegati per la creazione di differenti serie di monete false relative ai prodotti ufficiali di zecche piemontesi, liguri, emiliane e toscane. In modo particolare vengono approfonditi i dati relativi all’argentatura superficiale utilizzata per produrre falsi quattrini di Siena e cornuti di Carmagnola. Prendendo spunto da quanto rilevato in questo sito, si aggiungono alcune considerazioni generali sulla produzione monetale in relazione all’approvvigionamento di materie prime, agli indicatori di produzione, alla trasmissione delle tecniche e alle maestranze dedite a questo tipo di produzione fraudolenta tra medioevo e la prima età moderna.Between 2010 and 2020, a series of historical and archaeological studies focused on the castle of Godano, located in the hinterland of La Spezia. These investigations shed light on the history of this settlement between the Middle Ages and the Modern Era. Notably, traces of activity from an unauthorised mint were discovered, which likely played a role in the destruction of the stronghold in 1524. This contribution presents data from the archaeological, archaeometric, and numismatic analysis of materials recovered during the excavations, helped to clarify various production processes used to create different series of counterfeit coins modelled after the official coinage of the mints of Piedmont, Liguria, Emilia, and Tuscany.
In particular, it examines in depth the surface silvering techniques employed to produce fake quattrini of Siena and cornuti of Carmagnola. Based on the evidence from this site, we also offer some general considerations on coin production with a focus on the supply of raw materials, production indicators, the transmission of techniques, and the workers involved in this type of fraudulent activity between the Middle Ages and the Early Modern Era
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
Mineralogical-compositional variations in the production technologies of mortars used in some Italian medieval fortifications located in different territorial and historical contexts
Full text linkThe goal of research is the mineralogical-petrographic study of the mortars used in some medieval
fortification walls of XVI century located in the Siena and Cagliari cities. In the first case, the mortars of
the walls designed by Baldassarre Peruzzi were studied, while in the second case the mortars used in the
Santa Croce's walls (within the "Castello" district) were studied. From the beginning of the sixteenth
century until the end of XVI and the XVII centuries, these two ancient fortifications were affected by
different masonry transformations, which resulted in different mortar types. The compositional
characterization of the entrapment mortars of the historical buildings can be a particularly significant tool
for: i) the definition of the construction phases of a ancient yard site and its transformations over time, ii)
the realization of data-base timescales valid for local level but also on a national scale, iii) the possible
identification, in a synchronic dimension, of mortars selected for specific building types. Therefore, the
final purpose of the research is to compare the mortars of the XVI century with those used in the wall
circles dating back to previous periods (XIV and XV century) and located in different Italian territories
(i.e., Tuscany and Sardinia), to understand the variations of the processing technologies of the raw
materials for the production of the mortars.
The research at the moment focuses attention on the entrapment mortars of brick walls taken from
different portions in Peruzzian walls of the Siena fortifications. The samples were chosen according to
their representativeness but above all on the basis of the chronological significance. Preliminary
investigations have highlighted the use of different types of mortar compared to previous ones,
characterized by high hydraulicity indexes and a greater care in the selection and treatment of raw
materials for the aggregates. In fact, the mortars show a narrow dimensional distribution of aggregate
(referable to a use of sands with a grain size from very fine to fine) and the little presence of silty or
coarser components. Among the constituents of the aggregate are mainly quartz granules (both in
monocrystals and in polycrystalline aggregates), belonging to the typical Pliocene marine sands on which
the historical centre of Siena is located. The binding / aggregate ratios are usually higher (1/1) in mortars
of the sixteenth century compared to mortar three-fifteenth century (around 1/2).
These evidences, taken from the compositional point of view, between the mortars of the XIV and those
of the following centuries suggest a deliberate choice of new materials, more technologically advanced, in
the context of major upgrades to the city defenses implemented at the beginning of the sixteenth century
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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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