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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
Physical characteristics ofLongissimus lumborummuscle of "Sarda" and "Nero Siciliano" pigs reared outdoor: preliminary results
Get PDFIt is known that the sensory properties, i.e. smell, taste, colour, juiciness, texture and tenderness represent the principal
factors able to condition drastically the choices of the consumers at the moment of purchase, therefore, they
have a role of primary importance regarding the qualification of the product. The physical characteristics of the
meat are influenced by different factors such as: age, sex, breed, breeding system and transport, slaughtering and
ripeness; the aim of this study was to evaluate some physical characteristics of pig meat derived from two different
autochthonous Italian genetic types. The trial was carried out on 30 castrated males pigs, 15 Sarda and 15 Nero
Siciliano, reared outdoor respectively in the Ogliastra (Sardinia-Italy) and in the Nebrodi (Sicily-Italy) mountain
area at 550±50 m above sea level. Animals fed spontaneous fruits, acorn principally, of undergrowth variable in
relation to the seasons. In March 2006, at the age of 2 years and live weight of 106.4±4.2 kg for the Sarda and
107.2±3.6 kg for the Nero Siciliano, the pigs were slaughtered. At 45’post mortemthe pH1value of each half-carcass
was determined (Hanna Instrument HI 9023). After 24 hours of refrigeration at 4° C from the right half-carcass
of each animal, one sample ofLongissimus lumborummuscle (L2-L5) was taken and the pHu, Colour
(CIEL*a*b* system; Minolta CR – 400), Cooking loss and Warner-Bratzler shear force (INSTRON 5542) analysed.
Data were subjected to the statistical analysis of variance by the GLM procedure of SAS. The pH1(Sarda 6.07 vs.
Nero Siciliano 6.06; P=0.29) and pHu(Sarda 5.98 vs. Nero Siciliano 5.45; P=0.06) values indicate a bad progress of
meat acidification for the Sarda pigs; this could be due to the typical extensive breeding system of these animals,
therefore to the difficulties of their capture and transportation to the slaughterhouse. Significant differences were
observed for the colour parameters of the meat with the lowest values of L* (Sarda 39.91 vs. Nero Siciliano 50.88;
P=0.001), a* (Sarda 11.21 vs. Nero Siciliano 15.70; P=0.001), b* (Sarda 4.03 vs. Nero Siciliano 4.63; P=0.031) and
Chroma (Sarda 11.85 vs. Nero Siciliano 16.39; P=0.001) in the Sarda pigs; these data are related to the highest pHu
values. The Cooking loss has shown no significant differences between two genetic types (Sarda 27.79% vs. Nero
Siciliano 27.80%; P=0.50). As regards the tenderness, the values of WBS (Sarda 4.29 kg f/cm2vs. Nero Siciliano 3.57
kg f/cm2; P=0.02) were significantly lowest in the meat of Nero Siciliano pigs, in relation to the best acidification of
the muscle of these animals, testifying a meat more tender than that of Sarda pigs. Data show that, for improving
the meat quality and its aptitude to the transformation, it need to modify, at least during the finishing period, the
breeding system of these autochthonous pigs in a “plein air” system
Slaughter traits of "Sarda" and "Nero Siciliano" pigs reared outdoors: preliminary results
Get PDFThe evaluation of the carcasses and the percentage effect of the cuts can provide useful data for establishing breeding
techniques which can improve the productive performance of autochthonous pigs. The aim of the study was to
evaluate somepost mortemperformances of Sarda and Nero Siciliano pigs, reared outdoors. The study was carried
out on 30 male, castrated pigs over the age of 2 years and with a live weight at slaughtering of 106.4± 4.2 kg for
the “Sarda” (15 subjects) and 107.2 ± 3.6 kg for the “Nero Siciliano” (15 subjects) pigs. The Sarda pigs were reared
in a wooded area in the Ogliastra mountains (Sardinia-Italy) and the Nero Siciliano pigs in the Nebrodi mountains
(Sicily-Italy), at an altitude of 550 ± 50m a.s.l., where they fed on underwood vegetation consisting mainly of acorns.
After being slaughtered, which for both groups took place in March 2006, we determined the productivity for each
subject, the thickness of dorsal fat located at the first (1T) and the last (UT) thoracic vertebra and at the top of the
middle gluteus (GM). Subsequently, on the right side of each subject, we carried out the dissection of the lean cuts
(loin, ham, shoulder and neck), adipose cuts (belly, backfat, jowl, flare fat) and bone cuts (head and feet). The data
obtained were submitted to variance analyses using the procedure GLM of SAS (2001). The pigs belonging to the
two genetic types registered top yield, both hot (Sarda 82.1% vs. Nero Siciliano 82.9%; P=0.37) and cold (Sarda
80.5% vs. Nero Siciliano 80.8%; P=0.76), while the Nero Siciliano subjects demonstrated a higher thickness of dorsal
fat at 1T (Sarda 4.1cm vs. Nero Siciliano 5.2cm; P=0.0002), UT (Sarda 3.2cm vs. Nero Siciliano 4.7cm;
P35=0.0001) and GM (Sarda 2.8cm vs. 4.6cm; P=0.0001). The composition of the side cuts highlighted a major incidence
of loin (Sarda13.7% vs. Nero Siciliano 14.6%; P=0.017), ham (Sarda 26.6% vs. Nero Siciliano 30.5%; P=0.0001)
and shoulder (Sarda 16.7% vs. Nero Siciliano 17.4%; P=0.23) for the Nero Siciliano pig, while no significant difference
emerged between the two genetic types for the adipose cuts such as belly (Sarda 11.4% vs. Nero Siciliano
10.7%; P=0.23), backfat (Sarda 7.6% vs. Nero Siciliano 8.5%; P=0.29), jowl (Sarda 4.01% vs. Nero Siciliano 4.28%;
P=0.27) and flare fat (Sarda 5.29% vs. Nero Siciliano 6.01%; P=0.052), the same as for the bone cuts, head (Sarda
5.7% vs. Nero Siciliano 5.6%; P=0.48) and feet (Sarda 0.9% vs. Nero Siciliano 0.99%; P=0.18). Therefore, the Nero
Siciliano pigs demonstrated a higher incidence of meat cuts, a probable expression of a different process of selection
of this genetic type. This study has contributed to the supply of useful information for the eventual trends of
fresh use and/or the transformation of carcasses, contributing to the zootechnic protection of this population of pigs,
both for the quality of their production and the profitable use of marginal areas
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
Dispelling 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
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
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