1,721,013 research outputs found
A pigmented papule acting like a playful ghost: dermoscopy of three targetoid hemosiderotic hemangiomas
No full textTargetoid hemosiderotic hemangioma represents an uncommon, distinctive, benign lympho-vascular lesion, with a variable clinical appearance, typically occurs in the lower limbs and trunk. Most patients are in their 20’s or 30’s. We describe three dermoscopic cases followed by the review of the literature. Dermoscopic images have been collected and have been evaluated for the presence of dermoscopic features. Concerning the review, we researched on pubmed and records were reviewed noting patient age of onset, sex, location, overall size, dermoscopic appearance. The harmonic mean age of patients was 31 years; the female-to-male ratio was 1:1, and the most common locations were lower extremities (47%) and the trunk (29%). In the most recent years several pediatric cases were described, lowering the mean age of the patients in the literature. Most targetoid hemosiderotic hemangioma appear clinically as a small, solitary, reddish-violaceous vascular lesion with a targetoid appearance. The most typical dermoscopic findings are a homogeneous central area, red lacunae, dark lacunae, peripheric red-violaceous ring, whitish structures, peripheric vascular structures, yellowish intermediate areas, and a peripheral pigment network. Histologically, more superficially, in the papillary dermis there are dilated thin blood vessels lined by hobnail-appearing endothelial cells. In the deeper dermis there are typically slit-like capillaries that ramify in the dermis and dissect through collagen bundles. We wanted to evaluate the features of a large series of targetoid hemosiderotic hemangiomas for a better awareness of the entity, to improve its clinical and dermoscopic diagnostic accuracy, to focus attention on nontargetoid patterns, which often mimic other lesions, including melanoma
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
Treatment of nodular facial angiofibromas in tuberous sclerosis, using ultrapulse carbon dioxide laser
No full textVariations 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
Architetture per il Social Housing
No full textLa sezione conclusiva del volume offre una panoramica di recenti realizzazioni, in Italia e in Europa, di Social Housing assunte come casi studio in quanto a basso costo e basso consumo energetico. Per effetto dell’emergere di nuove categorie sociali deboli e di nuove forme di povertà, nonché per il generale aumento dei livelli di comfort attesi, la ricerca architettonica sul tema dell’abitazione sociale attraversa una fase di necessario mutamento e lo realizza partendo da un processo di indagine che oscilla tra i temi della ricerca tipologica e del basso costo, del risparmio energetico e della sostenibilità tout court. I progetti selezionati rappresentano le principali tendenze in atto, esemplificando una nicchia di eccellenza con soluzioni architettoniche di particolare interesse nell’ambito della riformulazione dei criteri progettuali della residenza sociale. Sono stati scelti anche esempi europei, al fine di offrire un confronto più ampio delle tendenze progettuali attualmente in corso
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
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