1,720,999 research outputs found
Regarding “Continuous Amenorrhea May be Insufficient to Stop the Progression of Colorectal Endometriosis”
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Re: Inositol treatment of anovulation in women with polycystic ovary syndrome: a meta-analysis of randomised trials
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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
Comment on “Longitudinal transvaginal ultrasound evaluation of cesarean scar niche incidence and depth in the first two years after single- or double-layer uterotomy closure: a randomized controlled trial”
No full textCertainly, CS is one of the most common surgical operations performed worldwide and its rate has dramatically increased in most developed countries, thus becoming a big concern (5). Yet, the question of which closure technique best avoids symp- tomatic uterine niche remains unanswered, but it seems even more important to find a non-invasive technique to assess the uterine wall defect. The two papers used different sonographic approaches, but we are still wondering if they represent accu- rately the uterine wall defect.
Marco Scioscia1, Piergiorgio Iannone2,* , Danila Morano2, Giovanni Pontrelli1 and Pantaleo Greco2 1Department of Obstetrics and Gynecology, Sacro Cuore Don Calabria Hospital, Negrar, Verona, Italy, and 2Department of Morphology, Surgery and Experimental Medicine, Section of Obstetrics and Gynecology, University of Ferrara, Azienda Ospedaliero-Universitaria S. Anna, Cona, Ferrara, Ital
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
Statistical limits in sonographic estimation of birth weight
No full textPURPOSE: The accuracy of sonographic estimation of birth weight (EBW) is
compromised by the precision of the biometrical measurements and the quality of
the algorithms. This prospective study was to evaluate technical aspects to
derive new equations for the EBW.
METHODS: Three consecutive phases were carried out (1) to recruit a homogenous
population, (2) to derive eight new algorithms using a multiple stepwise
mathematical/statistical method, and (3) to test the accuracy of the developed
equations. Only those patients with a singleton pregnancy who delivered within
48 h from the scan were considered for the analysis.
RESULTS: The study population was made of 473 women. Four polynomial, two square
root and two logarithmic algorithms were derived from a balanced study group of
200 women selected from the original study population. These formulas were
subsequently applied and compared between them and showed a significant
correlation with birth weight (p < 0.0001) and satisfactory statistical
performances (r > 0.9), nevertheless they performed similarly to other equations
previously published.
CONCLUSIONS: The present findings define better the limitations associated with
the intrinsic properties of algorithms and highlight that the possibility to
improve the precision of sonographic measurements remains the only point at issue
to increase the accuracy in the prediction of birth weight
A standardized formula based on 2D fetal thigh measurements improves the accuracy of intrapartum birth weight estimation
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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
Intentional etanercept use during pregnancy for maintenance of remission in rheumatoid arthritis
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