1,720,972 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Il beamforming come tecnica innovativa per la caratterizzazione acustica dei teatri antichi
No full textA fronte di una sempre maggiore richiesta da parte del pubblico, l’utilizzo di strutture teatrali antiche per eventi e rappresentazioni si è andato sempre più intensificando negli anni.
Il recupero funzionale di tali antichi luoghi di spettacolo si basa da una parte sulla conoscenza dettagliata del campo sonoro, dall’altra sull’elaborazione di soluzioni strutturali e scenografiche create ex novo. Metodi oggettivi di analisi degli ambienti dal punto di vista acustico prevedono l’esecuzione di misure in situ per la valutazione del campo acustico nelle attuali condizioni di conservazione, e simulazioni software e/o realizzazione di modelli in scala per lo sviluppo di soluzioni progettuali e per ricostruzioni della storia acustica degli ambienti. Attraverso questi metodi, è possibile misurare ovvero predire i valori assunti dai parametri oggettivi di qualità acustica, e di ricostruire virtualmente la sensazione spaziale all’interno di un ambiente scenico.
Obiettivo di questo paper è quello di descrivere un nuovo approccio sperimentale che fa uso del beamforming per la caratterizzazione acustica degli ambienti teatrali antichi all’aperto. La strumentazione utilizzata è una Camera Acustica a 120 canali, confrontata nei risultati con la più tradizionale catena di misura composta da fonometro, amplificatore, sorgente omnidirezionale e PC notebook con funzione di coordinare le operazioni di misura tramite software.
Il lavoro presenta i risultati sperimentali relativi alla caratterizzazione dell’ambiente acustico del teatro romano di Ostia Antica. I risultati ottenuti dimostrano l’efficacia del nuovo approccio sperimental
The acoustics of performance spaces (theatres and stadiums): a case study
No full textBeamforming is an excellent approach to acquire the acoustic signature of rooms and buildings, superimposing acoustic images on 3D models to create informative 3D acoustic maps. These
measurements give information on various factors such as sound propagation, reflective and absorptive surfaces, leakages, sound bridges, reverberation time and many more. While simulations
serve to merely predict the acoustic behavior of performance spaces, measurements at the real site allow for verification of these simulations by acquiring the true acoustic signature of these spaces.
Such on-site measurements have been carried out at the Michigan Stadium, US as well as the Coliseum and the Ancient Ostia in Rome, Italy. This practical paper aims to present measurements
carried out on theatres and stadiums and the results thereof showing the applicability of beamforming systems to this en
Variations on the Author
Get PDF“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
Get PDFWe 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
Get PDFWe 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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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