1,720,963 research outputs found
Letter by diplomatico and Barbi regarding article, “Management of stroke in neonates and children: A scientific statement from the American Heart Association/American Stroke Association”
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Twelve-year-old boy presenting with recurrent abdominal pain and 25 urinary calculi
No full textA 12-year-old boy, with intermittent abdominal pain from 3 years of age, presented with increased frequency of right lower quadrant pain (at least three episodes per week over the past six months) and pain during micturition affecting school attendance. His family history included referred urolithiasis. An abdominal ultrasound performed 1 year before our visit showed a small stone of 4 mm in the right renal pelvis for which he did not receive any therapy. The patient brought 25 hard stones with irregular outline, 2-8 mm in diameter, of deep brown/grey colour that he claimed to have found in his underwear (figure 1). On examination, he looked well with normal vital signs and unremarkable cardiorespiratory and abdominal examinations. Plasma creatinine was 0.41 mg/dL (36.1 μmol/L), urinalysis and urine tests were all normal (including 24 hour calcium, phosphorus, oxalate, citrate, uric acid and cystine). Repeat kidney and urinary tract ultrasound showed no evidence of calculi. Figure 1 Twenty-five hard formations brought along by the patient from home. Question 1: Which is the most likely diagnosis? Cystinuria. Dent disease. Idiopathic urolithiasis. Factitious disorder imposed on self. Familial hypomagnesemia with hypercalciuria and nephrocalcinosis. Question 2: How would you confirm your diagnostic suspicion? Reassurance and clinical follow-up. Mass spectrometry of stones. CT urography. Increase oral fluid intake and administration of potassium citrate. Question 3: How would you manage this condition? Administration of placebo. Psychological consultation. Observed 24 hour urine collection. All of the above. Answers can be found on page 2
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
Stroke ischemico e terapie iperacute nel bambino e nell’adolescente visti da un Pronto Soccorso pediatrico e da uno dell’adulto
No full textLo stroke ischemico, evento raro nei bambini, rimane gravato da mortalità e sequele a distanza. In letteratura si è assistito a un aumento di segnalazioni di un uso efficace della terapia trombolitica in pazienti pediatrici, soprattutto adolescenti. In questo articolo, a partire da tre casi clinici, si propongono alcune riflessioni sulla possibilità di estendere le terapie iperacute dello stroke anche alla popolazione pediatrica, suggerendo un elevato indice di sospetto clinico nei confronti dei cosidetti “stroke mimic”
A case of urticarial vasculitis in a female patient with lupus: Micoplasma pneumoniae infection or lupus reactivation
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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
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