1,720,978 research outputs found
I Carafa di Roccella. Storia, architettura e arte di una famiglia feudale tra Napoli, la Calabria e Malta - Introduzione
No full textIntroduzione agli Atti del Convegno Internazionale di Studi (Santa Maria Capua Vetere, 15-16 giugno 2022) a cura di M.G. Pezone, G. Pignatelli Spinazzola, G. Sodan
PRELIMINARY EXPERIENCE WITH VOLUME ASSESSMENT IN BREAST ASYMMETRIES USING EXTERNAL 3D PRINTED SIZERS
No full textObjective: Breast volume assessment is essential for surgical planning in patients with breast asymmetry.
In search of a valuable method, we propose an external 3D printed breast sizer, which is accurate, easy to use, and acceptable for the patient.
Methods: In collaboration with a 3D printing company, a set of breast sizers prototypes was developed with a reverse engineering process using anatomical MENTOR® CPGTM im- plants.
The sizers were used for preoperative breast volume assessment in patients undergoing breast asymmetry cor- rective surgery. Breast resection volumes and breast im- plants volumes were also recorded.
Patients’ satisfaction with breast symmetry pre- operatively and postoperatively was evaluated with a 10- point Visual Analogue Scale. At the six months follow-up, the authors re-evaluated breast symmetry using the 3D Sizers.
Results: From 2019 to 2021, 35 patients were operated. Patients with Poland syndrome, unilateral amastia, chest wall deformities or requiring breast augmentation and contralateral reduction concurrently, were excluded. Twenty-eight patients were included, thirteen differential breast reduction, twelve differential breast augmentation and three unilateral breast reduction.
The volume difference measured with the 3D Sizers preoperatively was compared to the differential volumes used to correct the breast asymmetry. Mann-Whitney U test showed no significant difference (p-value: 0.72).
Mean preoperative satisfaction with breast symmetry was 3.79, while mean postoperative satisfaction was 8.79. T test showed significant difference (t = -15.22, p = < .00001).
Postoperative re-evaluation with the 3D printed sizers at 6 months follow-up showed a perfect volume matching be- tween the breasts in all the patients.
Conclusions: Our 3D printed sizers have proven to be accurate in volume difference measurement for breast asymmetries corrective surgery planning. They are non-in- vasive, easy to use and well accepted by the patients.
Furthermore, the digital files for 3D printing can be made available for download and printed everywhere by other surgeons
Propeller flaps in partial ear reconstruction: a case series
Full text linkBackground: Ear defect reconstruction still remains a surgical challenge today. Proper reconstruction should result in correction of the deformity with minimum morbidity with the aim of achieving the most esthetically pleasing outcome possible. Herein, we present our clinical experience with propeller flap reconstruction of external ear defects with a focus on indications and surgical technique. Methods: Fourteen patients underwent surgery at our Plastic Surgery Unit between January 2015 and October 2019. After identifying perforators with a handheld Doppler ultrasound, a tailor-made flap was designed for each patient. Following tumor excision, dissection of the pedicle and of the remaining flap was performed with the aid of surgical loops. Flap in-setting and donor site closure were final steps. Results: Flaps have survived in their entirety in almost all our patients (13/14) maintaining optimal color and elasticity and showing no complications. In one case, a superficial distal necrosis was observed and, in another patient, tumor recurrence took place. Conclusions: Propeller flaps offer great advantages when used in ear reconstruction ensuring excellent esthetic results with a one-stage technique. Nevertheless, it must be kept in mind that good dissection skills are required in order to avoid complications. Level of evidence: Level IV, Therapeutic study
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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