1,721,303 research outputs found
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
Characterization of the PDO Asiago cheese by an electronic nose
No full text(a) To use gas sensor array for the characterization and authentication
of P.D.O. (Protected Designation of Origin) ‘‘Asiago’’ cheese and (b) to
define the limits of acceptability in conformity with the Disciplinary of
Production
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
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
Tecniche innovative combinate “naso elettronico” e “lingua elettronica” per la predizione di descrittori sensoriali di vini rossi secchi mediante l’uso degli Algoritmi Genetici
No full textA commercial electronic nose and an home
made electronic tongue were used, together
with spectrophotometric determination of
phenolic compounds and color, in order to
predict the sensorial descriptors and the overall
quality of Italian red dry wines of different
denominations of origin. An expert wine tester
having an O.N.A.V. certificate, selected the
wines on the basis of their well-known sensorial
characteristics, e.g. astringency, bitterness,
aroma, color, body, etc. The analytical data
were used to build predictive models of the
sensorial descriptors by means of the Genetic
Algorithms, proposed as an alternative to the
mostly used PLS analysis and employed to select
subsets of variables that maximize the predictive
power of regression models. On the selected
models accurate validation techniques such as
Leave-one-out and Bootstrap were applied. The
present work demonstrate the possibility of
using innovative devices as the electronic nose
and the electronic tongue to obtain the sensorial
properties of wines. Moreover, the genetic
algorithms could represent a rational operative
procedure for building regression models with
real predictive capability
Analisi dell'immagine e naso elettronico
No full textThe evaluation of shelf life of the foodstuff is a critical area in modern production and distribution, first of all in what concerns the products defined as fresh or fresh-like where the packaging has a decisive role on the maintaining of quality characteristics.
In this perspective, there is a need for rapid and non-destructive methods to characterize the kinetics of the quality decay and to investigate the effect of the technological factors on the "freshness".
Image analysis and the application of the electronic nose are promising and suitable methods for these studies: they investigate and parameterize objectively sensorial indices (appearance, colour and aromatic fingerprint), i.e. the most relevant factors for the choice and the consumption of foodstuff. A long experience in the use of these methods is reported in some case-studies: the evaluation of shelf life of
fresh-like vegetables, the investigation on the freshness evolution of dairy products (crescenza), the discrimination of predictive effect of different storage technologies of some products with aromatic impact (fish and coffee). From these studies clearly appears the immediate applicability of the results obtained by using of these techniques, their potentiality on the in-situ quality control and on the compelling planes of sampling, the possibility to characterize multisensoristic strategies for the definition of shelf life based on the pattern recognition methods
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