1,720,975 research outputs found
Osservazioni sulla presenza e persistenza del virus della PRRS in tessuti diversi di suini nati da scrofe infettate sperimentalmente
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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
Pancytopenia and haemorrhagic diathesis in calves: Italian experience
No full textIn recent times, similar to Germany and other European countries, Italian farmers have alsobeen reporting the worrisome occurrence of haemorrhagic syndromes associated with pancytopenia in young calves. After having described their experience with the disease, the authors emphasize their conviction that perception of the prevalence in Italy is strongly underestimated. In fact, upon specific request, many practitioners as well as farmers report similar cases which they had experienced in the past but did not send to diagnostic centres.
Out of the 16 farms affected which were directly examined by the authors, one had 12 clinical cases
Focolai di infezione da virus dell’encefalomiocardite (EMCV) in tre allevamenti da riproduzione appartenenti alla stessa azienda di produzione suinicola.
No full textNel presente lavoro vengono riportati i dati relativi a focolai di mortalità improvvisa in suinetti in lattazione e aumento nati-morti e feti mummificati al parto, comparsi contemporaneamente in tre allevamenti da riproduzione (A, B e C), appartenenti allo stessa azienda suinicola. Le tre unità produttive, due nella provincia di Mantova e una nella provincia di Brescia, erano dislocate a più di 20 Km di distanza l.una dall.altra. In un allevamento (A) la mortalità ha coinvolto anche il reparto delle scrofette da rimonta, nella fase di peso vivo compresa tra i 40 e i 70 Kg. Le indagini di laboratorio effettuate su suini e feti colpiti dalla patologia hanno evidenziato la presenza di una infezione da virus
dell.encefalomiocardite (EMCV). ECMV è stato rilevato mediante RT-PCR in campioni di tessuto cardiaco delle diverse categorie di animali. La diagnosi è stata confermata dalla presenza di caratteristiche lesioni istopatologiche miocardiche. La contemporaneità dell.insorgenza dei focolai di infezione nei 3 allevamenti rende plausibile l.ipotesi di una trasmissione dell.EMCV dal sito produttivo A agli altri due (B e C) mediante il trasferimento delle scrofette da rimonta. La stima delle perdite globali causate dalle infezioni da EMCV, calcolata sullo scostamento rispetto agli indici aziendali di performance riferiti ai 4 mesi che hanno preceduto i focolai, si è attesta su 1.295 feti, 569 suinetti lattanti e 42 scrofette da rimonta. Il danno economico stimato complessivo ha superato i 76.000 euro
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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