1,720,967 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
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
Caratterizzazione del difetto della “cotenna rossa”del prosciutto di Parma
No full textThe aim of this study was to evaluate, in an objective way, the colour of the skin of raw Parma hams, classified subjectively in 3 different classes for the "red skin" defect, and to verify the relationship with muscular colour and pH. Two hundred left-thighs from pigs reared in two different farms, were evaluated subjectively on the basis of the intensity of red skin colour, using a 3 point scale system supported by a photographic standard where 1=defect absent, 2=slight defect and 3=serious defect. Colour of skin and BF muscle and pH of the latter were measured at 24 hour p.m. Results indicate that, red skin defect was present, on average, in the 69.5% of the examined thighs. L* and Hue values decreased and a* and chroma values increased, in both skin and BF tissues, when defect score increased
Aspetti tecnologici e microbiologici del salame di suino Mora Romagnola
No full textCon la presente ricerca sono state studiatealcune caratteristiche qualitative di salamitradizionali, ottenuti da carni di suini derivatidalla razza Mora Romagnola allevati all’apertonel circuito biologico, con aggiunta o menodi nitriti (150 ppm) e di una coltura starter dibatteri lattici. La composizione chimica deisalami prodotti non differisce molto da quellariportata per simili tipologie di produzioneottenute anche a livello industriale. L’impiegodei nitriti ha ridotto lievemente i cali di pesonelle fasi intermedie di stagionatura, speciese aggiunti insieme allo starter di batterilattici, ma non ha influenzato il calo finaleed ha prodotto salami con un minor gradodi ossidazione dei lipidi e con un colore piùrosso. Il pH è risultato abbastanza elevatodurante tutta la fase di preparazione ematurazione del salame in tutti i gruppi,con i valori più bassi in quelli aggiunti distarter di batteri lattici. Quest’ultimo sembraessere la variabile con il maggior peso trai lotti soprattutto sulla flora microbica. Imicrorganismi sono stati valutati con metodidi coltura indipendente e convenzionali
Effect of slaughterhouse on the incidence of defects in raw pig ham destined to the dry-curing process.
No full textDispelling 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
Effetto dell’impianto di macellazione sull’incidenza di difetti in cosce suine destinate alla stagionatura
No full textThe score and the incidence of the veining and “red skin” defects were evaluated on 120 left raw hams supplied by pigs reared in one farm and delivered in groups of 40 subjects to three slaughterhouses. The presence and the seriousness of the veining defect was significatively affected by the slaughter plant but not by the sex. In one of the three abattoir considered, the defect, even if with different gravity, was observed on the 100% of the hams. The “red skin” defect did not varied accordingly to the plant nor with the sex and his incidence was not imputable to the slaughter condition
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