1,720,957 research outputs found
INTONACI
No full textIl volume presenta il sito del monastero di Castelletto Cervo, oggetto di approfondita indagine da parte del Dipartimento di Studi Umanistici dell’Università del Piemonte Orientale sin dal 2006, in cui lo scavo (campagne 2009-2012) e l’archeologia dell’architettura hanno trovato integrazione con la ricerca archivistica e storico-artistica, avvalendosi di indagini archeometriche ad ampio spettro, nel quadro di progetti di ricerca internazionali. I risultati presentati in questo volume si inseriscono nel dibattito storiografico che investe sia l’archeologia dei monasteri, con una specifica attenzione agli aspetti topografico-spaziali e funzionali, sia gli studi sul mondo cluniacense, soprattutto alla luce delle scoperte derivanti dagli scavi attualmente in corso a Cluny, che spingono a rivedere le conoscenze consolidate sull’abbazia borgognona, sull’articolazione dei suoi spazi e sulla periodizzazione delle sue fasi costruttive. Queste nuove acquisizioni inducono anche a riconsiderare sotto una diversa prospettiva l’organizzazione – al tempo stesso architettonica, spaziale e liturgica – delle dipendenze e in particolare dei priorati, che mantennero per secoli un legame con Cluny
As-RICH APATITE FROM MT. CALVARIO: CHARACTERIZATION BY ΜICRO-RAMAN SPECTROSCOPY
No full textIn order to investigate content and localization of arsenic in natural fluorapatite, a micro-Raman spectroscopic study was carried out on As-rich fluorapatite crystals from the volcanic region of Mt. Calvario (Mount Etna, Italy). The crystals, from both the unaltered lavas and the metasomatized rocks, show a pure fluorapatite composition in the core, but an arsenic content of up to 15 wt.% As2O5 in the rim of the crystals from the altered lavas. [AsO4]3- ⇔ [PO4]3- substitutions are proposed on the basis of chemical analysis performed with Electron Microprobe (EMP), Scanning Electron Microscopy (SEM-EDS), and Raman spectroscopy. Micro-Raman investigations carried out on the same crystals studied by EMP show a large band, anomalous for fluorapatite, near 860 cm-1, where chemical microanalyses revealed high contents of As2O5. The Raman broad band near 860 cm-1 is produced by the vibrational modes of [AsO4]3- tetrahedra. No evidence of arsenate phase crystallization was found, therefore it is proposed that [AsO4]3- groups substitute for [PO4]3- groups in the apatite structure. Through μ-Raman spectroscopy, it has been possible to relate the iron content revealed by chemical analysis to magnetite in the fluorapatite from the unaltered lava, and to hematite inclusions in the inner core of the fluorapatite from metasomatized areas
Identification by micro-Raman spectroscopy of iron-rich mineral particles lying on the surface of erionite fibers from Rome (Oregon - USA) and from Karlik (Cappadocia - Turkey)
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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
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
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