1,721,046 research outputs found
TECNOLOGIE PER IL RISANAMENTO DELLE MURATURE DALL’UMIDITÀ DI RISALITA: STUDIO DELL’EFFICACIA DEL SISTEMA ELETTRO-OSMOTICO APPLICATO NEL NARTECE
No full textIn questo contributo presentiamo lo studio dell’efficacia di un sistema di deumidificazione basato sull’elettro-osmosi passiva, applicato
nel 1999 in una muratura del nartece della basilica di San Marco e monitorato fino al 2016. Nella parte introduttiva riportiamo una breve analisi sul problema dell’umidità di risalita di acqua di mare nelle murature veneziane, basata sullo studio ed elaborazione di dati presenti nella letteratura scientifica e riferiti a murature veneziane tradizionali in mattoni pieni. La basilica di San Marco, pur presentando una struttura differente rispetto alla maggior parte degli edifici veneziani, risente in maniera evidente dell’interazione con l’acqua della laguna e per questo rappresenta un esempio emblematico della complessa convivenza tra imateriali dell’architettura e l’ambiente lagunare. Lo studio dell’efficacia del metodo di deumidificazione applicato sulla muratura del nartece, oggetto di questo contributo, si basa su dati sperimentali ottenuti nel corso del tempo ed evidenzia la complessità del fenomeno della risalita capillare in un ambiente in continua evoluzione e in una struttura così particolare come quella della basilica. Questo insieme di complessità e unicità sottolinea l’importanza del monitoraggio inteso come attenzione non solo verso la muratura, ma anche verso le condizioni ambientali circostanti e le relative mutazion
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
Tiles from Aosta: A Peculiar Glaze Roof Covering
Full text linkThe 18th century roof tiles from the “Casa delle vigne”, located in the Aosta region (north-east Italy), were investigated as an example of a peculiar historical roof covering: ceramic tiles with a lead-based glaze finishing to waterproof them are used to create colourful patterns. A conservation project proposed the integration of the original tiles with new ones, produced according to traditional methods. Ancient and new tiles were analysed with Fiber Optics Reflectance Spectroscopy, micro-Raman, Fourier Transform Infrared Spectroscopy and X-ray Fluorescence Spectrometry, Thermogravimetry and Differential Scanning Calorimetry for understanding the composition and the production technology of this manufacture. Their resistance to freezing and thawing cycles was then tested, considering their exposure in the severe alpine climate of Aosta. The use of pure clays with low calcium contents, high firing temperature and lead-rich glazes was found in ancient tiles, able to outstand several freezing-thawing cycles without damages. Iron and copper pigments were used in old yellow and green glazes. Zinc-based pigment, low lead and calcium-rich glazes are used in the new ones, which remained mainly coherent to the ceramic body during the freeze-thaw test
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
The value of molecular response in chronic myeloid leukaemia: the present and the future.
No full textHigh-dose methotrexate and temozolomide associated with intrathecal liposomal cytarabine for the treatment of primary or secondary central nervous system lymphoma: A preliminary experience.
No full textAppropriate 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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