1,720,956 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
pytest-remote-response
No full textA pytest plugin for capturing and mocking connection requests during the test run
Medical Simulation-Based Sensor Methods for Ultrasound-Guided Dialysis Cannulation Skill Assessment
Get PDFEnd-stage kidney disease (EKSD) is the final, permanent stage of chronic kidney disease (CKD), where the body\u27s kidneys cannot filter blood sufficiently. Hemodialysis treats ESKD by filtering wastes and water from your blood externally via a dialyzer. Patients on hemodialysis require a vascular access, typically an arteriovenous fistula (AVF) or arteriovenous graft (AVG) for dialysis, which is used three times a week for about four hours a session. These life-saving therapies can be quite tedious, especially for elderly patients and patients with co-morbidities. As such, successful cannulation is extremely important to ensure the longevity of the patient\u27s vascular access and minimize the risk of complications during hemodialysis. Cannulation is a skill that requires comprehensive training and regular competency assessment. Poor clinical outcomes due to infiltration and other cannulation-related complications are often due to lack of cannulation skill training. Ultrasound-guided cannulation has emerged as a promising cannulation technique to improve the accuracy of first-time cannulations and minimizes complications by improving cannulation outcomes. While ultrasound-guided cannulation offers significant advantages over traditional cannulation, mastering this technique requires skill and can be demanding, time-consuming, and requires thorough training and practice with proper objective feedback. Given the significant challenges associated with dialysis cannulation and the lack of realistic training modalities that give objective feedback while allowing ultrasound guidance, the development of an ultrasound-guided cannulation skills training simulator becomes critical. The first aim was to develop an Infrared (IR) emitter-detector system to estimate the location of the needle tip inside the simulated AVF models. The system enables real-time tracking of the location of the needle inside the AVF models using an IR detector fabricated inside the 15 gauge (G) dialysis needle and four IR emitters actuating at different frequencies fabricated inside the AVF. A validation experiment was conducted, proving that this new system can detect the needle tip\u27s location in near real-time with only a 4mm error out of the total 90mm length of the simulated AVF. The second aim was to develop an ultrasound-guided cannulation skills training simulator with realistic patient-specific echogenic AVF models and objective feedback. Four patient-specific AVF geometries with varying levels of complexity were designed from actual patient fistula scans. Using these fistula geometries, a novel method was developed to create sensorized echogenic AVF phantoms for the ultrasound-guided cannulation skills training simulator. Reliable sensor data, along with ultrasound imaging, were recorded during the cannulations performed on these AVF phantoms. Metrics were successfully calculated on all patient-specific echogenic AVF phantoms. In the future, the needle insertion process can be segmented from the ultrasound imaging data to validate our metrics and develop new ultrasound-related metrics to help with ultrasound-guided cannulation skills training and assessment. In conclusion, the ultrasound-guided cannulation skills training simulator could be a valuable tool for the training and competency assessment of healthcare professionals in the cannulation of AVF’s, thus helping to improve overall patient outcomes
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
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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