1,720,974 research outputs found
THE SURVEY AND DOCUMENTATION 3D OF HISTORICAL UNDERGROUND CAVITIES
Full text linkThe geometric documentation of underground sites of natural or anthropogenic nature has always
been a difficult problem to solve if approached in rigorous terms. Only recent developments in laser
scanner technology have allowed the detection of a systematic and comprehensive cavities.
Still, no doubt, due to accessibility issues and environmental sustainability for operators. The operating
space available determine the choice of instrument, the methodology and consequently the economic
aspect of the intervention, it becomes even more important with the reduction in amplitude of the
cavity.
In theoretical terms, up to the size of a room in an apartment, you can still use the same tools used in
the relief of architectures. For smaller equipment must be used with anthropomorphic arm, which take
the apron quite high.
The example that is presented is related to an intervention survey and documentation of an
underground space performed in Malta within a preservation and valorization project of an area
related to the quarrying and transport of stone material (cart ruts)
Il rilievo e la rappresentazione delle mura di Canale Monterano: un'esperienza in ambienti impervi
No full textIl metodo di documentazione per questa tipologia di manufatto è stato inizialmente progettato per soddisfare due diverse esigenze: da una parte, era necessario documentare le mura nella loro complessità a livello cartografico, dall’altra parte era essenziale documentarne le caratteristiche ad una scala di maggiore dettaglio. La metodologia adottata nel progetto ha integrato varie tecniche per ottenere prodotti di tipo cartografico, modelli tridimensionali, ortofoto che costituiranno la base per gli studi poi condotti dagli esperti nelle varie discipline. La rappresentazione è partita dalle informazioni cartografiche disponibili, integrate da successivi rilievi ottenuti con tecniche diversificate a seconda della complessità delle aree analizzate. I risultati ottenuti, indispensabili per facilitare la leggibilità del manufatto, hanno fornito la base per l’inserimento di ricerche più approfondite
THE PORTICO OF THE CHURCH OF ST. FRANCIS IN URBINO: A DIGITAL MAP FOR MONUMENTS
Full text linkThis paper describes the preliminary study for restoration works on the portico of the Church of St. Francis in Urbino. The aim of this study is to develop models used for restoration works on the surfaces of the portico, based on a prior architectural survey using different methodologies. The research project was carried out in 2 phases: during the first phase quantitative data were obtained by means of formal-geometric surveys and during the second phase qualitative data were obtained by developing models. Results were diversified according to needs and the methods used in order to create a “digital map of the monument“ in its context. In the last phase, the various methodologies were analysed and compared in order to evaluate their accuracy, convenience (in terms of times and costs) and application limits
The “Art of war frieze” in Urbino: a blend of virtual reconstruction and scientific accuracy
Full text linkThe Art of War Frieze was commissioned by Federico da Montefeltro, Duke of Urbino, to decorate the back of the «wing façade» of the Ducal palace. The Frieze decorated the façade from the time it was realised towards the end of the XVth century until 1756. The Frieze consists of a very particular series of seventy-two limestone bas-reliefs, whose iconographic repertoire represents numerous war and building machines as well as military and political symbols. After it broke away from the outdoor façade it was stored in different rooms in the Palace but despite the many documentary records available, the question of the original sequence of the basreliefs has never been resolved.
The primary scope of this paper is to create a “virtual” reconstruction of the original sequence of the bas-reliefs, starting from historical and iconographic records, an analysis of the back and the individual panels using a laser scanner and fully automatic open source photo modelling technologies like the Arc3d, and photogrammetric systems like Image Master together with analyses of the state of conservation, type of degradation correlated to atmospheric parameters (sunlight, temperature, rain).
Tests will then be carried out with different systems in order to confirm the accuracy of the model if it is decided to reproduce the
individual panels using the rapid prototyping technique associated to a study of the execution techniques
SISTEMI GIS APPLICATI AL RESTAURO: INDAGINI SUI DIPINTI SU TAVOLA
No full textLa Scuola di Conservazione e Restauro dei Beni Culturali dell’Università di Urbino, sta sviluppando da alcuni anni sui dipinti su supporto ligneo ricerche nell’ambito del rilievo 3D e della gestione dei dati relativi alla documentazione tramite i sistemi GIS. In particolare i rilievi 3D del supporto ottenuti con tecnologie laser scanner e/o con sistemi di ricostruzione 3D basati sull’acquisizione di immagini auto calibrate per ottenere un modello digitale della superficie rilevata. I rilievi sono utilizzati per un confronto geometrico tra acquisizioni successive che permette di valutare eventuali spostamenti dovuti a modificazioni del supporto. Naturalmente la grande accuratezza e la ripetibilità delle misure approntate
in campagne di monitoraggio temporale, lì dove il solo controllo visivo o fotografico non fornisce sufficienti garanzie, permetterà di valutare analiticamente le possibili deformazioni del supporto fornendo dati di tipo quantitativo. Sono messi a confronto diversi sistemi di rilevamento tridimensionale
per verificarne l’accuratezza e l’efficacia ed i risultati così ottenuti sono gestiti successivamente nella loro complessità con sistemi informativi di tipo GIS utilizzando dei tools normalmente applicati in altri ambiti a carattere territoriale o più propriamente nell’ambito dei beni culturali legati a complessi a architettonici e ai siti archeologici
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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