1,720,976 research outputs found
Esophagobronchial fistula after thoracoscopic resection of an epiphrenic diverticulum
No full textWe report a case of a 54-year-old man presenting with recurrent epiphrenic diverticulum and esophagobronchial fistula 3 years after thoracoscopic diverticulectomy. Surgical correction required transhiatal stapling of the pouch combined with distal esophageal myotomy and Dor fundoplication
Esophageal function studies in the management of gastroesophageal reflux disease
No full textEsophageal function testing, i.e. esophageal manometry and 24-h pH monitoring, are usually carried out to diagnose gastroesophageal reflux disease (GERD) in patients with atypical symptoms, when there is no evidence of esophagitis at endoscopy, or following previous unsuccessful surgery. Additionally, these studies should be considered mandatory before surgery to confirm the diagnosis and to tailor the procedure to the motility pattern of the individual patient
Previous endoscopic treatment does not affect complication rate and outcome of laparoscopic Heller myotomy and anterior fundoplication for oesophageal achalasia
No full textAnedoctal reports suggest a detrimental effect of pneumatic dilation and botulinum toxin injection in patients who are potential candidates for Heller myotomy
PALIO DI SIENA: VALUTAZIONE COMPARATIVATECNICO-ATLETICA DEL CAVALLO DA PALIO
No full textViene definito il “modello di prestazione” del Palio di Siena anche attraverso l’analisi dei tempi ottenuti dai vincitori negli ultimi
50 anni. La corsa del Palio di Siena può essere assimilata ad una specialità sportiva “mista” che richiede ai cavalli partecipanti
doti tecniche (abilità) e doti atletiche (capacità condizionali).
Le doti tecniche sono sintetizzabili nella perfetta coordinazione e controllo dell’equilibrio con armonica gestione delle spinte
e delle pressioni. Le qualità atletiche sono rappresentate dalla capacità di esprimere la propria massima velocità (potenza
lattacida) e di ben sopportare gli inevitabili alti tassi di lattato ematico (resistenza lattacida). La capacità di resistere a tale
tasso di lattato rappresenta la qualità più pagante poiché permette al cavallo di non ridurre il proprio ritmo nel 3° giro della
corsa. Con un allenamento mirato ed adeguato ed un efficace addestramento di cavalli con carattere idoneo, il Palio di Siena
rappresenta un impegno atletico molto intenso ma sostenibile non diversamente da qualsiasi altra specialità sportiva di
elevato livello
Does previous endoscopic treatment affect the outcome of laparoscopic Heller myotomy?
No full textAim of this study was to assess symptomatic and objective outcome in patients undergoing laparoscopic Heller myotomy after unsuccessful endoscopic treatment, compared to patients having primary surgery
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
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