1,721,011 research outputs found
Verità e menzogna nel falso; Truth and lies in fakes and forgeries
No full textIl volume raccoglie gli atti del Convegno Internazionale di studi "Truth and lies in fakes and forgeries - Verità e menzogna nel falso", tenutosi presso il Dipartimento di beni culturali dell'Università di Bologna (Ravenna Campus) nei giorni 16 17 marzo 2017 e ha l'obiettivo fondamentale di analizzare il tema del "falso nei beni culturali" attraverso un approccio interdisciplinare, che, percorrendo i vari ambiti scientifici (giuridico -economico; storico - filologico - documentario e archeometrico), dimostri da un lato la sua complessità nella società moderna e dall'altro che esso, oltre a costituire una costante nella storia dell'nomo, non si limita agli oggetti artistici in senso stretto ,ma riguarda i beni culturali nella loro più ampia espressione
Storia e diagnosi di testimonianze leonardesche. I. Ritratto di Gentildonna
No full textIl presente studio si propone di condurre un'analisi dettagliata del clima artistico-culturale,dei caratteri storico-tecnici e, soprattutto, dei risultati diagnostico analitici relativi al dipinto Ritratto di Gentildonna al fine di ricostruirne e inquadrarne il contesto originario di riferimento. L'opera, un olio su tavola raffigurante una giovane donna riccamente abbiagliata e ingioiellata, fu presentata all'asta da Christie's il 27 gennaio 2010 come Follower of Leonardo da Vinci Portrait of a young lady in a gold silk dress ed è oggi conservata in una collezione privata a San Pietroburgo
Storia e diagnosi di testimonianze leonardesche. II. Flora
No full textLa presente trattazione si propone di condurre un'analisi dettagliata delle peculiarità storico-artistiche e, soprattutto, dei risultati diagnostico-analitici relativi al dipinto Flora al fine di ricostruirne e inquadrarne il contesto originario di riferimento. L'opera, un olio su tavola, raffigurante una giovane donna in veste di Flora, venne presentata all'asta da Christie's il 4 luglio 2012 come Follower of Leonardo da Vinci, 16th century. La Columbine: portrait of a woman as Flora, half-lenght, in a white, embroidered dress with a ruby brooch and a blue wrap, holding an aquilegia in her left hand, with jasmine and anemones on her lap, fern and kenilworth ivy climbing a wall beyond ed è oggi conservata in una collezione privata a San Pietroburgo
Colorimetry applied to the field of cultural heritage: examples of study cases
Full text linkFor a few years now, the Dipartimento di Storie e Metodi per la Conservazione dei Beni Culturali of the Alma Mater Studiorum Università di Bologna (sede di Ravenna) has been creating a Diagnostic Laboratory for the study on the “system: cultural heritage/conservation environment”. In the present paper the results of different surveys concerning the use of colorimetry on different typologies of art works are reported: graphic documents (fig. 1); oil painting on board and canvas (fig. 2); wall painting (fig. 3); stony materials consolidated with ethyl silicate (fig. 4). Measurements of the chromatic parameters, according to the CIE L*a*b* chromaticity diagram and to the UNI 8941 Standard Coloured surfaces, were carried out with the spectrophotometric colorimeter Minolta CM-2600D model. The reference measurements (targets) were carried out on every typology of works. Such targets, recorded on the tool or in the computer, could be considered in order to draw a comparison in time on the same studied surface. It is then possible to check the trend of the chromatic alteration as an effect of interaction of the environment of location-conservation with the art work and, then to determine the causes, i.e the environmental operating-factors. The measurements of the chromatic parameters for graphic documents and for wall paintings have also allowed us to establish if the modifications, caused by an inappropriate environment, must be linked to irreversible or reversible effects and, then, with the possibility of being removed. As regards wall paintings, the respect of the “noble patina” was showed, as established by the Card of Restoration, by means of the measurement of the + b* parameters (yellow degree). The studies on stony materials aimed at the evaluation of the chromatic alterations of the art works previously consolidated with various products based on ethyl silicates: different results were reached according to the different degree of stone cohesion, anisotropy of the material and different exposure conditions of the works. Such researches may contribute to applying colorimetry in the field of cultural heritage
Volto Santo di Sansepolcro e Volto Santo di Lucca: due statue lignee di Cristo ed un falso documento ritenuto autentico. Per un corretto dialogo tra discipline diverse
No full textIl saggio ricostruisce il dibattito che si è sviluppato sin dal Settecento intorno al Volto Santo di Lucca, ed evidenzia l'insostenibilità della proposta, avanzata qualche anno fa, di identificare l'originario Volto Santo di Lucca con l'attuale Volto Santo di Sansepolcro, restaurato negli anni Ottanta-Novanta del secolo scorso. Il documento che dovrebbe dimostrare la cessione del Volto Santo di Lucca a Sansepolcro è infatti un evidente falso, fabbricato pochi anni fa in modo maldestro, con palesi incongruenze di ordine storico, paleografico e diplomatistico..Questa vicenda evidenzia la necessità di un dialogo costante e di una collaborazione tra studiosi di discipline diverse: dei reperti materiali, di storia dell'arte, della storia religiosa e civile e della documentazione scritta, Vengono inoltre analizzate, in relazione all'evoluzione del culto del Crocefisso lucchese e con un ricorso alla letteratura storica ed alla documentazione anche inedita, le problematiche connesse al rapporto originale-copia, che assumono una valenza particolare quando si tratta di immagini oggetto di culto. A tal fine viene analizzata anche la leggenda leobiniana, con le sue stratificazioni
Technical and diagnostic investigation on some metallic objects coming from the Isiao Excavations at the site of Barikot (Swat, Pakistan)
Full text linkThe authors introduce new studies on the metallurgic activity carried out in the archaeological site of Barikot (Swat, Pakistan). The collaboration between the IsIAO Italian Archaeological Mission in Pakistan and the Diagnostic Laboratory of the Department of Storie e Metodi per la Conservazione dei Beni Culturali of the Alma Mater Studiorum University of Bologna allowed the achievement of new useful data that are quite interesting even if the research is still at the beginning and needs further checks. In particular some samples show traces of niobium. This element is fairly rare but, in some cases, is present into the crystal net of cassiterite. In the samples, the traces of niobium are always correlated with the presence of tin in the alloy. If these data will be confirmed, it’s going to be possible to hypothesise that tin minerals used for the alloy of the object found at Barikot may come from mining sites characterized by the presence of niobium
Diagnosis and digitization of Dantesque Code “Phillipps 9589”
Full text linkThis work concerns the study of Dante’s Code, illuminated on parchment, which is preserved at the Library of “Centro Dantesco dei Frati Minori Conventuali” in Ravenna. This Code is well-known by the international scientific Community as Phillipps 9589 and its notoriety is not only due to the fact that it’s the only Dante’s Palimpsest, but also because it preserves, at the scripto superior, one of the older witness of that branch of handwritten tradition of Dante’s Commedia named “Tradition a”, the so-called “old Vulgate”. The research, worked out for several stages, had aimed to examine the technical-diagnostic aspects, in particular the general purposes had been: – evaluation about the state of preservation; – materials characterization; – improvement of the legibility of Dante’s text and Palimpsest reading; – evaluation about the preservative environment; – code digitization suitable for a intranet and internet use. In this connection, the following non-destructive diagnostic techniques bad been employed, also related to a documentary aim: – image analysis videomicroscope; – spectrophotometric colorimetry; – X-ray fluorescence (XRF); – Multispectral Imaging System (MuSIS); – environmental monitoring Instruments (thermohygrometer, illuminometer, aerosol spectrometer PTS e PM10)
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
The fine art market with counterfeited paintings. An economic exploration.
No full textThe paper summarizes from an economic point of view the consequences of the introduction and of the discovery of counterfeited artworks. We develop an innovative approach based on econometric method that identifiy the development of the market in absence of the fakes discovery shock. We compare the predicted dynamics of the market in absence of shock with the actual perfomance, evaluating empirically the differences. We apply this methodology to the case of the Italian pop artist Franco Angeli
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