1,720,963 research outputs found
Bilateral kidney dysplasia with ascites in premature newborn infant [Displasia renale bilaterale con ascite in neonato prematuro.]
No full textThe case refers to a premature newborn with anhydramnios and related foot malformations, renal dysplasia (Potter II-IV) and marked ascites. Hypoplasia of one umbilical cord artery was also found. Renal dysplasia according to Potter classification was difficult to be assessed being a borderline case between grade II and IV. The mother underwent methimazole and oestroprogestin treatment in the first period of pregnancy
Infezione HTLV-III/LAV e gravidanza. Prime osservazioni sulla gestante, sul parto, sul neonato, sul lattante
No full text
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
Epidemiological study of anencephaly in Italy and anatomo-pathological findings in cases observed by us [Studio epidemiologico dell'anencefalia in Italia e rilievi anatomopatologici sui casi di nostra osservazione.]
No full textEpidemiologic study of anencephaly in Italy and anatomo-pathological analysis of our series. Out of about 1,000,000 new-borns enrolled in the IPIMC Register (Italian Multicenter Study on Congenital Malformations) from 1978 to 1986, 205 were found with isolated anencephaly and 59 with anencephaly associated with other independent malformations, for a total of 284 cases. The study of preferentially associated malformations has pointed out that anencephaly is mainly associated with three kinds of malformations: cleft lip and/or palate, ambiguous genitalia, gastroschisis. Yet these combinations did not result to be the most common with spina bifida, thus proving the heterogeneity of these two neural canal defects. The total rate is 2.7 (/10,000), higher in the South (3.2) than in the North (2.3). The highest rate was reported in Sardinia (6.0). Moreover, a 58.1% trend reduction between 1978-80 and 1984-86 with seasonal peak in January (3.6%) was reported. The following major new-born and mother characteristics have been studied: sex (M/F = 0.76), twin pregnancies (6.4%), vitality (live births: 60, from them 40 died in the same day, 16 between day 1 and 7, 4 after day 7 since birth; still births: 47; born with unknown vitality: 10), mother age (no influence), consanguinity (4.4%), average weight (1,891 gr.), mean gestational age (246 days), intrauterine growth retardation (52.9%). The importance of a proper and careful examination during autopsy is stressed to identify and describe possible associated malformations. Immunohistochemical data (4 cases) on the cerebro-vascular area are reported, mainly to identify any neural buds and related structures (glia, neurofilaments, ganglia, nerves, ependyma, choroid plexus) as well as the connection between osteocartilaginous and epithelial and/or vascular rudiments
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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