1,720,986 research outputs found
Tailored endoscopic treatment of tracheo-oesophageal fistula using preoperative holographic assessment and a cardiac septal occluder
No full textDevices originally designed for closure of cardiac septal defects have also been proposed for the treatment of acquired tracheo-oesophageal fistula (TOF). Choosing the right occluder device to match TOF size and shape is essential for a tailored treatment. We report the successful endoscopic closure of a post-radiotherapy TOF using preprocedural CT scan with holographic three-dimensional reconstruction and an Amplatzer atrial septal device. Complete TOF sealing was achieved with resolution of respiratory symptoms, and the patient was maintaining his ability to eat at 4-month follow-up
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
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
Optimizing the Straight Leg Raise Maneuver to Improve Prediction of Conclusive Gastro-Esophageal Reflux Disease
No full textBackgroundGastroesophageal reflux disease (GERD) arises from dysfunction of the anti-reflux barrier. While high-resolution manometry (HRM) is routinely performed in suspected GERD, traditional metrics are poor predictors. The routine adoption of the straight leg raise (SLR) maneuver has unveiled a series of unaddressed challenges. This study aimed to determine the minimum intra-abdominal pressure (IAP) increase for effectively stressing the esophago-gastric junction (EGJ), the optimal intra-esophageal pressure (IEP) increase threshold for GERD prediction, and explore EGJ behavior in GERD and non-GERD patients.MethodsWe performed a retrospective review of HRM tracings and pH-impedance studies of consecutive adult patients with GERD symptoms. Peak and mean IAP and IEP during the reference period and SLR were recorded. The SLR was effective if the EGJ-contractile integral (EGJ-CI) during the maneuver increased by 50% compared to baseline. GERD was diagnosed based on Lyon 2.0. The optimal thresholds for effective and positive SLR were determined using the receiver operator characteristics analysis.ResultsAmong the 298 patients included (53% females, age 52 years, BMI 24 kg/m2), 145 had GERD. A delta mean IAP increase of 15.4 mmHg best predicted effective EGJ challenge (AUC 0.825). A delta peak IEP increase of 11.4 mmHg optimally predicted GERD (AUC 0.777), aligning with the prior threshold (11 mmHg). Non-GERD patients exhibited higher EGJ-CI during SLR, reflecting intact anti-reflux barrier function.ConclusionsThe SLR maneuver enhances GERD diagnosis in HRM by dynamically assessing EGJ competence. Our study validated the thresholds to define an effective (mean IAP increase of 15.4 mmHg) and positive (peak IEP increase of 11.4 mmHg) maneuver
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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