1,721,020 research outputs found
I dipinti di Andrea Pozzo per il padre generale Giovanni Paolo Oliva: un felice ritrovamento
No full textEdizione di due inediti dipinti donati da Andrea Pozzo al generale gesuita Oliva per favorire il proprio arrivo a Rom
Lines of Danio rerio selected for opposite behavioural lateralization show differences in anatomical left-right asymmetries.
No full textPrevious studies suggest that laterality of the viscera, morphological asymmetries of the brain, and lateralization of cognitive functions have a common genetic origin. To test this hypothesis, we conducted an artificial selection experiment for behavioural lateralization of eye use in two strains (TL and GT) of zebrafish (Danio rerio), maintaining one selected line in each strain for five generations. In addition, we investigated, using molecular markers, whether there was any correlation among directionality in eye preference, diencephalic left-right asymmetries in the brain and positioning of the viscera. After one generation of selection, the right- and left-eye lines of both strains showed a significant difference in the behavioural trait. This difference was maintained for all the five generations even though we observed a progressive decline in the response to artificial selection in subsequent generations for both strains. Overall, anatomical evidence suggests that selection for right-eye use significantly increased the frequency of reversed asymmetry in the epithalamus while selection for left-eye use decreased it. However, the response was irregular since not all samples conformed to this pattern. The association between the direction of behavioural selection and pancreas position was less clear-cut, although the concordance between visceral and brain asymmetries exceeded 90% in both strains
L’eremo di Torino-Pecetto: arte e architettura tra committenze di corte e dispersioni
No full textLimitata è la storiografia relativa alle vicende architettoniche e artistiche dell’Eremo camaldolese torinese, eretto sulle pendici del monte Veglio (oggi territorio comunale di Pecetto), grazie al sostegno del duca Carlo Emanuele I a partire dal 1601. Il presente contributo analizza questo quasi del tutto perduto complesso sacro da un duplice punto di vista. Innanzitutto, il peso della committenza sabauda e dei cavalieri della SS. Annunziata, essendo divenuto il sito sede della cappella capitolare del massimo ordine dinastico del casato, che determinò nei secoli XVII e XVIII l’invio di preziose opere d’arte - si pensi solamente alla perduta pala di Sebastiano Ricci - e suppellettili sacre, oltre al coinvolgimento di importanti professionisti attivi per la corte nella progettazione dei successivi riassesti architettonici: da Ascanio Vittozzi e Carlo di Castellamonte a Benedetto Alfieri. In secondo luogo, si presenta una prima ricostruzione delle vicende relative alla dispersione del prezioso patrimonio artistico dopo le soppressioni di età napoleonica, parzialmente riemerso nel corso del Novecento in edifici sacri della città di Torino e nelle chiese di Pecetto, e della progressiva dismissione e trasformazione degli spazi dell’Eremo stesso
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
Il trasporto delle pitture murali in Italia dal collezionismo dei frammenti alla musealizzazione dei cicli pittorici. Una storia di gusto, supporti e tecniche
No full textFin dalla seconda metà del XIX secolo interi cicli di affreschi staccati cominciarono a fare il loro ingresso nei musei italiani (come anche, di conseguenza, in quelli europei). Per la prima volta, oltre ai consueti frammenti e alle singole scene estrapolate da decorazioni murali più ampie, furono musealizzate intere absidi, cappelle, volte di chiese o stanze di edifici monumentali, portando con loro le problematiche legate all'esposizione di pitture di notevoli dimensioni in ambienti architettonici che spesso non erano idonei ad accoglierle. Fra Otto e Novecento, poi, le migliorie delle tecniche estrattive riuscirono a permettere decontestualizzazioni mai viste prima, influenzando, nel corso del secolo, la storia degli allestimenti museali, sempre più disponibili a impegnare spazi permanenti per la fruizione degli affreschi staccati, sempre più protagonisti della stagione delle mostre temporanee
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