1,721,029 research outputs found
The Acute Scrotum
No full textClinical history and physical examination do not always allow a firm differential among the different possible cause of acute scrotum, and imaging is needed to provide a diagnosis. Differentiating torsion from infection is a clinical emergency. Inflammatory conditions of the scrotum are the most frequent cause of acute scrotal pain in the adult population. The acute scrotum has several less common causes. This article outlines the ultrasonographic and Doppler findings in patients with acute scrotum of nontraumatic origin
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
Imaging Techniques and Normal Anatomy: Scrotum
No full textThe scrotum is a fibromuscular sac divided into two compartments by a median raphe. Its wall is composed (from superficial to deep) by skin, superficial fascia, dartos muscle, external spermatic fascia, cremasteric fascia, and internal spermatic fascia. The raphe is continuous with the dartos muscle. Beneath the internal spermatic fascia, there is the tunica vaginalis, a mesothelial layer which outlines a sac containing a testis, epididymis, and spermatic cord, usually together with a small amount of fluid. The layer of the tunica vaginalis lining the scrotal wall is defined as the parietal layer; the one extending over the testis and epididymis is called the visceral one. The two layers join at the posterolateral aspect of the testis, where the tunica attaches to the scrotal wall. Beneath the visceral layer of the tunica vaginalis is the tunica albuginea, an inelastic structure which covers the testis and, at its posterior surface, projects into the inner part to form an incomplete septum, the mediastinum; from there, multiple thin fibrous septa extend into the testicular parenchyma, dividing it into 200–400 lobules. Each lobule contains one to three seminiferous tubules which, at the mediastinum, open via the tubuli recti into dilated spaces called the rete testis and then drain into the epididymis through 10–15 efferent ductules. The epididymis, a tubular structure consisting of a head, body, and tail, is located superior to and contiguous with the posterior aspect of the testis. After entering the epididymal head, the ductules from the rete testis form a single duct, the ductus epididymis, which has very tortuous course from the head to the tail (up to 6 m). The ductus finally becomes the vas deferens and continues in the spermatic cor
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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