1,721,059 research outputs found
L. Annaei Senecae, Tragoediae, cum apparatu edidit I. C. Giardina (Universita degli studi di Bologna, Facolta di Lettere e Filosofia, Studi pub. dall'Istituto di Filologia Classica, XX), 1966
No full textMarache R. L. Annaei Senecae, Tragoediae, cum apparatu edidit I. C. Giardina (Universita degli studi di Bologna, Facolta di Lettere e Filosofia, Studi pub. dall'Istituto di Filologia Classica, XX), 1966. In: Revue des Études Anciennes. Tome 70, 1968, n°1-2. pp. 205-206
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
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
Use of the FT-NIR spectroscopy to monitor the shelf-life of packed industrial Ricotta cheese
No full textRicotta cheese is a dairy product characterised by a short shelf life. The aim of this study was to monitor changes occurring during
storage of packed industrial ricotta cheese using a simple and fast method. Several samples of manufactured ricotta cheese were
monitored during storage at three different temperatures (3, 10 and 20°C). Spectral data were collected over the range 12000 to
4400 cm–1 using a Fourier transform near infrared (FT-NIR) spectrometer fi tted with an optic fi bre working in diffuse refl ectance.
Some chemical and rheological parameters were also measured. Principal component analysis (PCA) was applied as an exploratory
chemometric technique to each one of the three sets of data (FT-NIR, chemical and rheological data) and a calibration model
between the NIR data set and chemical and rheological indices was developed by means of partial least squares regression. The PCA
results showed in all cases the infl uence of the storage temperature on the shelf life trend and were able to identify a critical day of
shelf life for each storage temperature
Application of FT-NIR and FT-IR spectroscopy to study the shelf-life of Crescenza cheese
No full textCrescenza is a fresh cheese in which "freshness" is associated with low acidity, limited proteolysis, and no bitter taste. In this study, FT-NIR and FT-IR spectroscopy was applied to evaluate the shelf-life period in which-freshness" is maintained. Cheese samples were analysed at different times for 20 days. Spectral data were collected using a FT-NIR spectrometer with an optic fibre (from 12000 to 4000 cm(-1)), and a FT-IR spectrometer with an ATR cell (from 4000 to 700 cm(-1)). Principal component analysis was able to detect the decrease of Crescenza "freshness" and to define the critical day during shelf-life. These results are in agreement both with those reported in previous studies and with those of physico-chemical and chemical tests. The principal absorption bands relating to the milk components involved were determined. The advantage of using IR spectroscopy is to rapidly draw a profile of the product related to its total quality. (c) 2005 Elsevier Ltd. All rights reserved
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