1,720,999 research outputs found
A thermodynamic approach to the microclimate environment of museums
Full text linkHistorical buildings represent an important part of the cultural heritage and an economic source for Countries. Generally, they are used for public purposes and specifically to host museums and art exhibitions. Even if they are private homes, these buildings must be conserved in their original conditions as possible but have also to guarantee the best preservation conditions for the works of art they contain and a suitable thermal comfort for visitors and people living or working there. Therefore, a technical physical application of thermal comfort control is needed since the human thermal environment is the result of the interaction of air temperature, air velocity and humidity. These parameters are the basis of the designing of comfortable habitat. Thermodynamics plays a key role in the analysis of systems in which energy transfer and energy transformation take place. In this contribution, a second law analysis of the thermal behaviour of the metabolism of a human body under environment changes is performed by means of the extremum entropy generation. The result is that a change in room temperature affects hardly the metabolism. Consequently, thermal and hygrometric control must be developed in historical buildings with particular concern to the stationarity of the heating systems, in order to advantage the visitors. The notions of entropy and its generation are the fundamentals of modern technical and engineering thermodynamics and thermal engineering. Entropy has been proved to be a quantity describing the progress of irreversible processes. Entropy generation allows to describe any irreversible process without mathematical constrains (linear or nonlinear phenomena, open, closed or isolated systems), becoming a very interesting quantity in applications. We prove the usefulness of the entropy generation extremum principle to evaluate the condition of the best comfort in historical buildings
Multianalytical investigation for dating purpose of contemporary artworks: test case on “Cubist Figure”, attributed to Pablo Picasso
No full textIn the field of Cultural Heritage, scientific studies provide useful information not only for conservative purpose and restoration projects but also to support dating and authentication studies. The present studies shows results obtained by a recent research carried out on “Cubist Figure” (oil on canvas), painting attributed to Pablo Picasso (1881-1973) (Volpe L., 2013), for dating purpose mainly based on pigment analysis
Analisi diagnostiche e datazioni per la caratterizzazione di sculture lignee tardomedievali
No full textCOME LE INDAGINI DIAGNOSTICHE E LA SCIENZA POSSANO FAVORIRE LA SCOPERTA DI IMPORTANTI DANNI ALLE OPERE D'ARTE LIGNEE E FAVORIRNE IL RESTAUR
Indagini sulla Madonna del Cardellino. Indagini diagnostiche mediante spettrometria Compton
No full textQuesto lavoro consiste nell'ideazione, nella realizzazione e nell'applicazione di una tecnica innovativa di indagine non invasiva sulle opere d'arte mediante la tomografia ad effetto Compton. Per le sue peculiari caratteristiche e per l'elevata precisione delle misure e la assoluta non invasività dell'opera oggetto di studio, è stata sperimentata sul prezioso dipinto su tavola di Raffaello raffigurante la Madonna del Cardellino. L'opera già pochi decenni dopo la sua esecuzione fu pesantemente danneggiata dal terremoto che demolì Casa Nasi dal nome del committente. Il restauro, condotto nei laboratori dell'Opificio delle Pietre Dure, si è basato su dettagliate ed esaustive indagini scientifiche fra le quali quella descritta in questo contributo
Minorum Capuccinorum bibliotheca Bononiae: incunaboli e cinquecentine conservati nella Biblioteca del convento dei Frati minori Cappuccini di Bologna
Full text linkNell’ambito di un più ampio studio inteso a documentare la storia ed il patrimonio culturale del complesso storico e museale dei Frati Minori Cappuccini di Bologna, frutto di un decennale lavoro svolto dagli autori e di una esauriente campagna fotografica prodotta per l’occasione – al fine di cogliere in tutti i suoi aspetti la presenza e l’influenza dei Frati Minori Cappuccini nella provincia di Bologna e nel territorio romagnolo durante l’intero periodo del loro insediamento, dalle origini dell’ordine fino ad oggi –, questo saggio presenta alcuni risultati relativi alla catalogazione delle cinquecentine, conservate presso la biblioteca del convento dei Cappuccini di Bologna
Fraintendimenti e incomprensioni di natura linguistica ed extralinguistica
No full textThis article examines linguistic and extra-linguistic misunderstandings in interactions between different populations. While the former are generally due to translation problems, the latter are of different nature and manifest themselves particularly in the relationships between populations with very different ways of life and distant value systems. Misunderstandings between sedentary and nomadic populations are a typical case in this respect
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
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