1,720,961 research outputs found
On the influence of different facade materials on the auditory perception of a urban space
No full textThe study investigates the influence of different façade materials on acoustic characteristics of a small urban square and on listeners’ space wideness perception on the basis of auditory stimuli. It is aimed at enhancing awareness on how different façade design can influence the outdoor environment under multiple aspects.
The investigation has been conducted through virtual acoustics, by means of simulations and auralisations performed with Odeon (v.13) software. A listening test with a 3 factorial design levels has been implemented to investigate subjective assessment of space wideness.
Results showed that the absorption coefficient of the facades and the listener position significantly affect the perceived wideness of spaces, while scattering coefficient is not influential. Moreover, a comparison with objective parameters resulting from simulations has being perfomed, in order to draw a first hypothesis on what parameters could explain the differences in the perception of dimensions of a urban space through auditory stimuli
Effect of façade shape and acoustic cladding on reduction of leisure noise levels in a street canyon
No full textEnvironmental noise is a rising problem in contemporary cities, and the awareness of its consequences on human health is growing. Although the leisure noise generated by people talking in the streets is not generally the most relevant noise source, it has a significant impact in certain urban scenarios, such as nightlife areas. Buildings façades are the primary surfaces upon which the sound emitted within the street is reflected and their design contributes to the reduction of noise level over their fronts. By means of acoustic performance-based design, this research investigates the sound level reduction provided by the shape and the acoustic cladding of an urban façade in front of a talking noise source in a street canyon. The results highlight the screening effect provided by the balconies and the benefits of the application of sound absorbing material on the noise reduction over the façade. Up to 1 dB decrease in the mean level over the entire façade has been achieved with balconies depth of 1.5 m compared to 0.9 m, with a maximum abatement of 2.8 dB at the highest floor. When the entire façade is cladded with sound absorbing material, the mean noise level decrease is up to 10 dB over the façade and up to 3 dB over the opposite one. These reductions are much higher than those obtained by increasing the sound absorption properties of the street paving, that is limited to 1.5 dB averagely, thus underlining the crucial role of façade design in outdoor noise mitigation
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
Identificazioni toponomastiche
No full textIdentificazioni toponomastiche dei documenti 3, 4, 12, 13, 14, 1
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
doc. 14 - Arezzo, Archivio Capitolare, Canonica, n. 21; doc. 15 - Arezzo, Archivio Capitolare, Canonica, n. 23
No full textNell'ambito dell'edizione critica dei documenti pubblici e privati datati o databili al secolo IX conservati presso l'Archivio Capitolare di Arezzo, si offre qui in particolare l'edizione critica di due diplomi imperiali di Carlo il Calvo, concessi il primo alla Chiesa di Arezzo, il secondo alla chiesa di S. Donato e datati entrambi all'876. Il secondo dei due documenti è di particolare rilevanza in quanto parte di un gruppo di soli sette diplomi emanati dalla cancelleria di Carlo il Calvo che riportano in calce la sottoscrizione imperiale nella forma del "Legimus".
Di tali documenti si fornisce qui l’edizione critica accanto alla riproduzione fotografica dell'originale, corredata da un’ampia analisi paleografica, dalla discussione cronologica e dall'esame diplomatistico utile a verificare la genuinità del pezzo, oltre alle informazioni di carattere archivistico
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
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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