1,721,080 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
Evaluation of the clinical efficacy of benazepril in the treatment of renal proteinuria in dogs
No full textIl doping in medicina veterinaria : problematiche e stato dell’arte del controllo antidoping nel settore del cavallo sportivo
No full textIn campo veterinario il controllo anti-doping è argomento
di primaria importanza soprattutto nel mondo del cavallo
sportivo. I mutamenti apportati di recente alla gestione
delle attività ippiche in Italia e l’attuale quadro normativo
europeo sono lo spunto per una breve rassegna sullo
stato dell’arte, e sulle prospettive presenti e future nel controllo
antidoping
Unsupervised and supervised snow monitoring and mapping for hydrological applications using remotely sensed data
No full textCanine medium macronucleated cell/ marginal zone lymphoma: description of 16 cases (2001-2008).
No full textComparison of M-mode and two-dimensional echocardiography in evaluating the left atrium to aorta ratio in cats
No full textAssessment of the left atrial (LA) size is crucial in cats with cardiomyopathies because LA dilation, which results from an
increased diastolic filling pressure, predisposes towards the development of congestive heart failure and arterial thromboembolism. In addition, LA dilation has been shown to be a negative prognostic
factor in cats affected by hypertrophic cardiomyopathy. The aim of this study was to evaluate the agreement between M-mode
and two-dimensional (2D) echocardiography in the assessment of LA size in cats.
The study was retrospective and observational. Cats with and without heart diseases were included. The LA and aorta (AO)
were measured in M-mode and 2D using a standard right parasternal short axis view at the aortic valve level. A left atrium
to aorta ratio (LA/AO) >1.5 was considered indicative of LA enlargement. Cohen’s kappa agreement was calculated and Bland-
Altman plots were obtained. A total of 188 client-owned cats were included: 104 with heart disease and 84 without heart disease. LA and AO dimensions in M-mode were 13.9 +/- 3.7 mm and 8.7 +/- 1.5 mm, respectively, and in 2D were 14.1 +/- 3.5 mm and 8.8 +/- 1.4 mm, respectively. Bland-Altman plots showed that the mean difference for the evaluation
of AO dimensions between 2D and M-mode was 0.1 +/- 1.0 mm and that of LA was 0.1 +/- 1.4 mm. LA/AO measured in 2D and
M-mode was 1.6 +/- 0.5 and 1.6 +/- 0.5, respectively, with a median difference between the two methods of 0.0 0.2. Cohen’s kappa yielded a good agreement between the two methods in the interpretation of LA/AO ratio (kappa = 0.760; 95% CI: 0.54–0.99), with 184 agreements out of 188 (97.6%).
In conclusion, 2D echocardiography resulted in a slightly higher estimation of the LA and AO diameters in comparison to Mmode, but not for the LA/AO. Because a good agreement was documented between M-mode and 2D evaluation of the LA/AO,
the two methods can be used interchangeably to measure this echocardiographic index in cats
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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