1,720,959 research outputs found
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
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
Adjuvant role of anti-angiogenic drugs in the management of head and neck arteriovenous malformations
No full textArteriovenous malformations (AVMs) are high-flow vascular malformations characterised by a complex vessel network directly connecting feeding arteries and draining veins, typically featured by a natural history of progression, while spontaneous regressions are purely anecdotal.AVMs are very aggressive entities that possess a locally infiltrative behaviour like neoplasms. Complete "radical" surgical excision presents the highest chance of cure, but nowadays there is still considerable controversy on how to treat large AVMs that are not amenable of "radical" excision.The aim of this paper is to propose a different approach to treat vast AVMs that cannot be removed radically.The association of an antiangiogenic drug (to be initiated before surgery and to be continued in the post-operative period), could prevent the feared "explosive" growth of the remaining nidus after its partial removal. This could make recontouring and other "aesthetically" focused procedures feasible in these patients, with an obvious leap in their quality of life.The most promising antiangiogenic drug seems to be Thalidomide, but other drugs such as Sirolimus, VEGF pathway inhibitors, Interferon or Matrix Metalloproteinase (MMP) Inhibitors could serve the purpose just as well. Even Propranolol could prove useful in this sense as suggested by some recent researches on retinopathy of prematurity and tumour biology
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
Il ruolo dei farmaci antiangiogenetici nella gestione delle malformazioni artero-venose del distretto testa-collo
No full textLe malformazioni arterovenose (MAV) sono malformazioni ad alto flusso in cui una rete complessa di vasi mette in comunicazione diretta afferenze arteriose e drenaggio venoso. Le MAV vanno solitamente incontro a progressione nel corso della vita, mentre le regressioni spontanee documentate sono sostanzialmente eccezionali.
Le MAV sono estremamente aggressive e possiedono una capacità infiltrativa locale che ricorda quella delle neoplasie maligne. La resezione chirurgica “radicale” garantisce le più elevate possibilità di cura, ma non vi è unanimità sulla gestione delle MAV di dimensioni maggiori che non possono essere rimosse in modo completo.
Scopo di questa presentazione è quello di proporre un approccio differente al trattamento delle MAV di grosse dimensioni non candidabili alla resezione radicale.
L’associazione di farmaci antiangiogenetici (che deve iniziare prima della chirurgia e proseguire nel periodo postoperatorio) potrebbe avere un ruolo chiave nel prevenire la tanto temuta crescita “esplosiva” del nidus rimanente a fronte di un’asportazione parziale. Questo approccio potrebbe rendere possibile realizzare per questi pazienti recontouring e altre procedure più “orientate all’estetica”, con un ovvio miglioramento della qualità di vita.
Il più promettente tra i farmaci antiangiogenetici sembra essere la Talidomide, anche se altri farmaci come Sirolimus, inibitori della via di VEGF, interferoni e inibitori delle metalloproteinasi potrebbero rivelarsi altrettanto utili. Anche il propanololo potrebbe avere un ruolo simile, come sembrano indicare alcune recenti scoperte nel campo della retinopatia del prematuro e dell’oncobiologia
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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