1,720,967 research outputs found
L'accesso al pronto soccorso pediatrico. Indagine epidemilogica in Friuli venezia Giulia
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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
The Influence of Timing of Elective Cesarean Section on Risk of Neonatal Pneumothorax
No full textObjective: To determine whether the timing of elective cesarean delivery at term influences the risk of neonatal pneumothorax. Study design: Chart reviews confirmed gestational age, delivery modalities, and diagnosis of pneumothorax of 66,961 term infants delivered in the Veneto region of northern Italy. Of these neonates, 17,783 (26.5%) were delivered by cesarean section, including 9988 elective (56.1%) and 7795 emergency (43.8%). Results: In 5498 (55.0%) of neonates, an elective cesarean section was performed before 39 completed weeks. Fifty-nine neonates had pneumothorax diagnosed (0.88/1000 births). Neonates delivered by elective cesarean section had an increased incidence of pneumothorax (2.90/1000 births), in comparison with neonates delivered by emergency cesarean (1.53/1000 births; OR 4.21; 95% CI 2.02-8.74) or vaginally delivered (0.39/1000 births; OR 7.95; 95% CI 4.41-14.32). In elective cesarean sections there was a significant progressive reduction in the incidence of pneumothorax from week 37 0/7 to 37 6/7 onward (P < .01). Conclusions: The timing of elective cesarean section influences the pneumothorax risk. A reduction in neonatal iatrogenic pneumothorax would result if elective deliveries were performed after the 39 completed weeks of pregnancy. © 2007 Mosby, Inc. All rights reserved
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
Hydrops fetalis associated with SARS-CoV-2 placentitis and de novo CDK13 mutation: An integrated genetic and histological analysis
No full textWe present a case of a 33-year-old woman with a diagnosis of hydrops fetalis at 33 weeks’ gestation. The histopathological examination of the placenta deposes for SARS-CoV-2 placentitis and genetic analysis reveals evidence of a de novo heterozygous mutation of the CDK13 mutation gene in the newborn. This report presents a case of COVID-19 during pregnancy associated with SARS-CoV-2 placentitis and highlights the characteristic histopathology of this recently described condition, which can lead to hydrops. On the other hand, this is the first reported case of hydrops fetalis in a fetus carrier of a pathogenic CDK13 gene variant. Moreover, since the reported patients with CDK13 mutations and prenatal complications we cannot exclude the causality or at least the contribution of this variant in generating the hydrops
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
A two-year retrospective study of the neonatal emergency transport service in Northeast Italy
No full textBackground: Some newborns require acute transport to a Neonatal Intensive Care Unit (NICU) due to unpredicted or unpredictable reasons. Objective: To describe the activity of the Neonatal Emergency Transport Service (NETS) in Northeast Italy. Methods: An observational retrospective study was performed between 1 January 2018, and 31 December, 2019. Results: A total of 133 transports were collected, with a neonatal transport index of 1.4%. Infants ≤2500 grams were more frequently transferred by NETS than those in the normal group (n = 34/563, 6.0% vs. n = 99/8,437, 1.2%; p 2500 grams, there was a low incidence of a cesarean birth compared to vaginal delivery (23.2% versus 63.5%; p =.001), while the percentages were reversed in the group of infants ≤2500 grams (67.7% versus 20.6%) (p =.001). Infant stabilization time was higher in the underweight group compared to those weighed >2500 grams (31.5 versus 23.0 min; p 2500 grams. Conclusions: This study described a local reality by showing the characteristics of the neonatal transports that took place in a metropolitan area in Northeast Italy. Wider database is necessary to achieve a better knowledge in the field of perinatal outcomes
Placental acute inflammation infiltrates and pregnancy outcomes: a retrospective cohort study
Full text linkChorioamnionitis can be either an infection or a sterile inflammation. This study aims to analyze the prevalence of acute inflammatory lesions of the placenta, the association with a positive result of the microbiological examination, and the fetal-maternal outcomes. This retrospective study considered all single, consecutive pregnancies and their placental pathological examination during 2014–2017. The evidence of funisitis, chorionic vasculitis, and chorioamnionitis was assessed by a pathologist, including stage and grade. Moreover, maternal fever, placental microbiological examination, and neonatal outcomes were also recorded. Among the 5910 pregnancies in the considered period, 1770 had a placental pathological examination, and 358 (6.06%) had acute placental inflammation. Microbiological examination was performed in 125 cases, revealing 64 cases with a positive microbiological outcome. In the presence of acute placental inflammation, there was a higher rate of neonatal cardiopulmonary resuscitation, admission to neonatal intensive care unit, and postnatal death of the newborn. Multivariate analysis inferred that acute inflammation of membranes was a risk factor for neonatal cardiopulmonary resuscitation (OR 2.12; CI.95 1.36–3.31; p < 0.05), acute funisitis was a risk factor for admission to intensive neonatal care unit (OR 3.2; CI.95 1.67–6.12; p < 0.05), and chorionic vasculitis was a risk factor for postnatal death of the newborn (OR 5.38; CI.95 1.37–21.06; p < 0.05). The prevalence of chorioamnionitis was 6.06%, and about half of the cases were sterile inflammation. Chorioamnionitis was associated with higher rates of adverse fetal and neonatal outcomes; in particular, chorionic vasculitis was a risk factor for postnatal death
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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