1,721,040 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
Ottimizzazione della gestione riproduttiva della coniglia fattrice e dei metodi di svezzamento
No full textEffect of pasture availability on the fatty acid profile and oxidative status of rabbit meat. Atti 6° CONVEGNO NAZIONALE: “Acidi grassi polinsaturi ?-3 ,CLA e Antiossidanti”,
No full textAssessment of a reproduction rhythm based on the body condition of rabbit doe: preliminary results.
No full textThe efficiency of rabbit farm mainly depends on the fertility and prolificacy of does, which in turn are modulated
by genetic, feeding and management factors. The most important management factor for rabbit does is the
reproductive rhythm.
The aim of this work was to assess a reproductive rhythm in which the artificial insemination (AI) is done
according to the body condition of doe. The study, involved 100 New Zealand White multiparous does submitted to
AI for 5 consecutive cycles. Does were divided into 2 groups: CONTROL AI at 11d post partum and CONDITIONED
AI when they reach a certain perirenal fat depot (between 15 and 30 g) estimated by ultrasound scanning. If does
were too fat or lean, after an appropriate dietary protocol, they were weighed and submitted to ultrasound scanning
again, and if they have a suitable body fat, artificially inseminated.
At AI the does were weighed and submitted to ultrasound scanning of the perirenal region. Body Condition
Score (loin, rump and hind leg), weight at kindling and at the weaning were also evaluated. On the day of insemination,
does of both groups showed similar live weight and perirenal fat thickness (3862 vs 3813g and 0.64 vs 0.61
cm) respectively for CONDITIONED and CONTROL). These results were due to the fact that does are AI in different
physiological stage; mainly lactating for the control group and dry for conditioned.
Thus, during lactation does have a higher live weight for the presence of milk and for the higher incidence of
the digestive tract, further the fat depot start to increase only after several days after weaning. Conditioned group
showed higher fertility rate (83% vs 62%), number of live born pups (9.2 vs 7.4, P<0.05) and live weight of pups
(512.8 vs 481.8 g, P<0.05), BCS of loin (1.1 vs 0.8, P<0.001), rump (1.0 vs 0.8, P<0.001) and hind leg (1.7 vs 1.4,
P<0.001), perirenal fat weight (14.0 vs 10.9 , P<0.001), live weight at kindling (3865 vs 3553g, P<0.01), and doe at
the weaning (3767 vs 3190g, P<0.01).
In conclusion, conditioned rhythm, permitted to exhibit greater reproductive performance thanks to better
energy balance. The higher cost of working hands would be counterbalanced by the higher fertility rate and prolificacy.
Further investigation are needed to simplified and adapt conditioned rhythm to cycled 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
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