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DIAGNOSI PRECOCE DELLA VENTRICOLOMEGALIA NEL I° TRIMESTRE:CASO CLINICO
No full textTHE HYDROCEPHALUS IS ONE OF THE MOST FREQUENT CONGENITAL ANOMALIE
Oral plus vaginal alpha-lipoic acid in women at risk for preterm delivery
Full text linkObjective: The etiology of preterm labor is multifactorial. An inflammatory response is always involved with the activation of NF-kB that determines synthesis and release of inflammatory molecules, implicated in fetal membrane activation, cervical modifications, abdominal pain and spontaneous uterine contractions. There is a close relationship between preterm birth and cervical shortening in the second quarter of pregnancy. We evaluated the benefits of alpha-lipoic acid administration on women considered at risk of preterm delivery due to the presence of symptoms (pelvic pain and uterine contractions) or reduced cervical length.
Patients and Methods: This prospective observational study was carried out at the Gynecology and Obstetrics Unit of Palermo University Hospital (Palermo, Italy), from October 2015 to April 2016. The inclusion criteria were: women aged 18-35, with gestational age between 24 and 33 weeks of amenorrhea, pregnancy at risk of preterm delivery due to cervical length between 35-25 mm (in presence of symptoms) or < 30 and > 15 mm (if asymptomatic), intact membranes and negative for vaginosis. Patients were treated daily with alpha lipoic acid orally (300 mg, twice a day for 30 days) and vaginally (10 mg, once a day for 10 days), or untreated (controls). Patients were evaluated at the baseline (T 0), after 7 days, after 30 days, and at 34 weeks of gestation considering: maternal characteristics, symptomology and cervical length.
Results: Among 60 analyzed women, 50 were treated orally and vaginally with alpha-lipoic acid, whereas 10 did not undergo any therapy. In the treated group, 10 patients were asymptomatic and 40 symptomatic. The symptoms disappeared in 37 patients. In the untreated group, 4 women were symptomatic and 6 asymptomatic. At the end all women were symptomatic. Mean cervical length showed a reduction in the untreated group compared to the treated group.
Conclusions: The vaginal/oral-combined administration with alpha-lipoic acid showed effectiveness in reducing symptoms and preventing cervical shortening in our set of patients. No adverse effects were detected during the treatment
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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