1,720,964 research outputs found

    Zinc and vitamin C deficiency in a newborn with low gestational age

    No full text
    A premature with 24-week gestational age, fed by total parenteral nutrition and affected by ileo-umbilical stercoraceous fistula is reported. At the end of the second month the little baby presented the characteristic clinical features of acrodermatitis enteropathica. The latter responded rapidly to zinc supplementation. In the meantime the little baby presented a tumefaction of the left thigh, multiple ecchymoses, ulaemorrhagia and stomatitis. Thanks to vitamin C supplementation, the clinical features of avitaminosis C rapidly regressed. Unfortunately, the little baby died when aged 6 months due to the complications of necrotizing enterocolitis. To the best of our knowledge, this is the first case of simultaneous deficiency of vitamin C and zinc

    Hemangioma and propranolol. Some remarks at the end of treatment. Differences from corticosteroids

    No full text
    23 cases of hemangioma treated with oral propranolol at a dosage of 2 mg/kg per day were reported. 11/23 cases stopped treatment and were monitored for an average period of three months after drug withdrawal. Propranolol was as effective as corticosteroids in blocking the growth of hemangioma and in causing a significant reduction both of the size and color of hemangioma. These effects, however, seem less permanent as compared with those ones caused by corticosteroids, requiring a longer duration of treatment -7 months on average-. Apart from heart contraindications, however rare, bronchospasm, which is frequent at this age, but more often inflammatory than muscular, is not an absolute contraindication to the usage of the drug. Hypoglicemia is the most dangerous side effect of propranolol

    Going Beyond Counting First Authors in Author Co-citation Analysis

    Full text link
    The 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 link
    We 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 link
    We 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
    corecore