1,720,964 research outputs found
COVID-19 impact on birth rates: first data from Metropolitan City of Genoa, Northern Italy
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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
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
The Tomato Model
No full textObjectives: Percutaneous renal access (PCA) is one of the most difficult intervention in endourology. Hands-on training is a useful tool for a good understanding of the puncturing technique, reducing the learning curve, and lowering risks of complications during first procedures. The ideal surgical simulator should efficiently improve trainees’ skills, be easily accessible, low-cost, and realistic. We aim to present novel fluoroscopy-guided PCA simulator named TOMATO model. Materials and methods: The model can be easily built in few minutes using low-cost items: yoga mat, cotton wool, forceps, needle-driver, scalpel, 0 silk suture, chiba needle, small pebble (1 cm ca) and a few kidney-shaped tomatoes. The yoga mat is fold in half, sutured with silk, placed on the operating table, and thanks to the friction created between the mat and sheet underneath there is no need for other fixating methods. Once placed inside the yoga mat, the tomato is held still in the position by the cotton wool, which is placed around the vegetable. The tomato imitates the real renal structure. Therefore is ideal for this use, and there is no need for liquid-contrast enhancement. The goal is achieved when the operator manages to move the pebble with chiba needle during pulsed fluoroscopy. The model was tested 3 times by 3 endourologists and by 10 residents in training with no experience as first operators. A 7-items questionnaire (1-10 rating scale) was administered to the participants in order to evaluate the utility of the model. Trainees’ kidney access time (KAT) and radiation time (RT) were assessed at the first use and after 1 hour of training (circa 15 attempts to reach the target per resident). Results: The model allowed residents’ significant reduction of the KAT and RT. KAT passed from 114 (144.25-89) to 72.5 (97.25-49.5) seconds (P = .04) while RAT passed from 82 (89.75-56) to 51.5 (60.25-35.75) seconds (P < .001). The residents particularly appreciated the high-fidelity reproduction of the anatomy that the model offers, and its’ usefulness for learning the puncturing technique, giving it 8.5 and 10 points, while the same items were rated 7.7, and 9.3 by the experts, respectively. Trainees felt that their skills could be improved by using this model. The main issue was finding the materials mimicking the real-life tissues and their different characteristics. Conclusions: TOMATO model might be a helpful and creative way to start learning the steps of kidney puncturing using low-cost materials and we believe its’ strength is being easily reproducible in all urology units
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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