1,720,984 research outputs found
Changes in knee motion following femoral and tibial lengthening using the Ilizarov apparatus: a cohort study.
No full textWe studied 46 patients undergoing tibial or femoral lengthening to correct limb-length discrepancy (LLD) to assess the effects of the procedure on the range of motion (ROM) of the knee. The ROM of the knee has decreased even before the lengthening process started, and was at its most pronounced by the end of the lengthening. Mean preoperative ROM was 125 degrees +/- 21 degrees, and at follow-up, at an average of 41 +/- 7.8 months from the beginning of the lengthening procedure, mean ROM was 117 degrees +/- 25 degrees (P = 0.31). There was no association between the worst ROM achieved during lengthening and the final ROM. Femoral lengthening resulted in a significantly greater loss of ROM for longer periods than tibial lengthening. Patients with congenital LLD were at risk of faster, more permanent loss of ROM than patients with posttraumatic or postinfective LLD. After the removal of the tibial or femoral Ilizarov frames, the ROM of the knee tended to return to prelengthening values
From thyroid to duodenum: round-trip
No full textLa malattia celiaca molto spesso (2%) si associa ad altre
malattie autoimmuni come la tiroidite di Hashimoto, questa è
una relazione biunivoca e non è soggetta a vincoli temporali (può
presentarsi prima la celiachia e poi la tiroidite o viceversa).
Non solo la celiachia è spesso asintomatica, ma può capitare
anche di diagnosticarla in bambini sovrappeso che con l’idea
classica di celiachia hanno ben poco a che fare
The bioprosthetic valve of choice for high-risk patients: long-term results (up to 10 years).
No full textCholic acid therapy for inborn errors of primary bile acids synthesis
No full textInborn errors of primary bile acid synthesis are
rare genetic disorders that cause chronic liver
disease, steatorrhea and fat-soluble vitamins
deficiency in childhood. Absence of itching, normal
γGT and serum bile acids suggest the diagnosis,
confirmed by urinary mass spectrometry
and gene analysis. Oral cholic acid is a safe and
effective therapy for the most common defects
that if untreated may lead to early cirrhosis and
liver failure
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
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