1,720,975 research outputs found
The integration of non destructive techniques and methods to assess the conservation conditions of painted plaster
No full textThe work presents the results of an in-situ experience performed using combined non-destructive testing techniques to support the restoration plan for the vaults of a Neoclassical church in Turin. During the restoration work at the Church of San Massimo, it was necessary to evaluate the areas of plaster which had become detached from the spandrels of the dome's frescoed surfaces. The investigations were carried out with the complementary use of qualitative and quantitative infrared thermography with remote visual inspection. First of all, we evaluated the heating system best suited to the geometry of the object and its colour finish using IR qualitative thermography, than we carried out a thermographic analysis in active conditions (QIRT) with the application of an experimental procedure. The Thermal Inertia study of a number of sample zones chosen on the surface and compared with a reference area (sound area according to the knocking-test) enabled us to recognize deteriorated areas without contact with the paintings. The comparison of these results to the outcome of the qualitative IR testing allowed us to extend the indications obtained from the examination of individual areas to entire regions without, however, gaining information on the type of plaster detachment. The results obtained from the IR investigations enabled us to focus the visual inspections on the deteriorated areas. The indirect visual analysis was carried out within existing cavities made in the past to inject consolidation material, cracks in the wall and small holes made specifically. The combined use of the two techniques allowed the assessment of the state of deterioration in the detached areas and also allowed us to highlight areas requiring urgent conservation action
1996-2006: dieci anni di sperimentazione e sviluppo della tecnica termografica. Dalle superfici intonacate alle superfici affrescate.
No full textSpatial data and temperature: a relationship to deepen. Integrated methods for advanced architectural diagnosis and metric documentation
No full textSull'intonaco e oltre: Diagnostica non distruttiva per il monitoraggio del Patrimonio storico-monumentale. Misura in situ dell'effusività termica
No full textL'applicazione del metodo termografico per l'analisi dello stato di conservazione degli edifici può fornire utili indicazioni diagnostiche qualora sia possibile disporre di affidabili protocolli di prova ai quali attenersi per il rilievo in situ. Il presente lavoro, condotto a partire dal 2004 su un ‘cantiere-scuola', si pone due obiettivi: da un lato tentare di definire quali siano le condizioni di ripresa migliori in funzione del difetto da indagare, dell'esposizione dell'edificio, nonché della sua tipologia costruttiva (protocolli di prova). In secondo luogo, si vogliono identificare parametri efficaci e dimostrare come le tecniche termografiche siano uno strumento imprescindibile per il monitoraggio del patrimonio artistico. Questo obiettivo si raggiunge attraverso il confronto tra i risultati ottenuti da scansioni condotte negli anni, che permettono di valutare l'eventuale evoluzione dei fenomeni di degrado individuati. Per giungere a questi risultati si è operata una classificazione ed una casistica di alcune patologie che si incontrano di frequente. In relazione a queste, si illustra la procedura sperimentale e di calcolo messa a punto per ottenere indicazioni affidabili, senza ricorrere alla stimolazione delle superfici con tecniche attive. Nella memoria si illustra un innovativo metodo di misura di un parametro che si dimostra di grande utilità per gli scopi suddetti e cioè l'inerzia termica. La misura si svolge in modo non distruttivo su ampie zone della superficie. La rappresentazione dei risultati viene efficacemente migliorata correlandoli alle condizioni geografiche ed alla geometria tridimensionale dell'edifici
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
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