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Inter-pterygoid distance as a predictor of success in modified expansion sphincter pharyngoplasty
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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
EXPANSION SPHINCTER PHARYNGOPLASTY (ESP) PLUS ANTERIOR PHARYNGOPLASTY (AP) IN THE TREATMENT OF OSAHS
No full textRetropalatal airway segment is the main contributor to airway obstruction in sleep apnea. Direct visualization of the pharynx
during drug-induced sleep and pathophysiological studies emphasized the role of the lateral pharyngeal wall collapse in the
origin of obstructive events. Based on these findings, new surgical techniques which create adequate lateral pharyngeal wall
tension to prevent its collapse have been proposed. The expansion sphincter pharyngoplasty (ESP), consists in creating a
palatopharyngeus muscular flap and its superolaterally rotation, aimed to stenting lateral pharyngeal wall and increasing
retropalatal airway space; the procedure allows to achieve better functional outcome than UPPP on pharyngeal collapsibility
without pharyngeal discomfort and swallowing disturbance. The reported success rate in appropriately (video sleep endoscopy)
selected patients is 80%. Many patients selected for ESP who present a remarkable redundancy of the soft palate or a
narrowing in the upper retropalatal segment, require an additional surgical procedure in order to remove the bulky palatal
tissue and stiffen the proximal soft palate. The Anterior Pharyngoplasty, a modified CAPSO (Cautery Assisted Palatal Stiffening
Operation)technique used for snoring and mild OSAS treatment and based on removal of a mucosal rectangle of the anterior
surface of the soft palate and subsequent suture of the margins with sparing of the underlying muscular plain, allows to obtain
this aim avoiding retracting scars with abnormal persistent narrowing at the level of the palate arch as observed in many
patient treated with a classic or modified UPPP. Moreover this technique is able to amplify the functional effect of the ESP
without additional morbidity. The authors propose a surgical technique that combines the ESP plus AP in patients with OSAHS
due to lateral pharyngeal wall collapse and proximal retropalatal narrowing. The video shows the surgical steps and the
functional and anatomical outcome of the ESP plus AP in a patient with severe OSAHS caused by retropalatal obstruction
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