1,721,083 research outputs found

    Free flaps for anterior chest wall reconstruction

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    Reconstruction of full-thickness chest wall defects usually entails the use of regional pedicled myocutaneous flaps as first-choice option. As defect complexity increases and local options are not available, microsurgical reconstruction is required to transfer reliable and well-vascularized tissues from distant sites. Size, anatomic location, presence of dead spaces, and extent of eventual bone defect should be assessed for proper selection of the flap. Regional recipient vessels should be previously identified and checked in order to consider alternatively the need of extension of distant recipient vessels through arteriovenous (AV) loops or vein graft interposition

    Plastic and cosmetic surgery of the male breast

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    The thorax has a fundamental role in the aesthetic of the male body: Congenital or acquired alterations are experienced as extremely frustrating clinical situations. Most breast surgery texts briefly mention gynecomastia, but no text comprehensively addresses the male breast and thorax, including reconstructive and cosmetic surgery and surgery in transgender patients. This gap is now thoroughly filled by Plastic and Cosmetic Surgery of the Male Breast: After introducing principles of anatomy and aesthetics for the male thorax, the first part focusses on the main congenital malformations and their treatment; the main benign acquired pathologies and their treatment (including an ample section dedicated to gynecomastia), the carcinoma of the male breast, with reference to familiar forms; the treatment of carcinoma and reconstruction of the thorax. The book closes with a chapter dedicated to breast surgery in transgender patients. While female breast surgery is increasingly practiced in specific Breast Units and highly specialized centers, male breast issues are treated in general and plastic surgeries units. This handy volume is a sound reference for the most complex clinical cases, and the latest reconstruction treatments for the male thorax and will be useful for general and thoracic surgeons, plastic surgeons and senologists

    Pedicled flaps for anterior chest wall reconstruction

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    Pedicled local or regional flaps are the main reconstructive tool for chest wall defects. Muscle or musculocutaneous flaps are most commonly used, with the latissimus dorsi and the pectoralis major being the workhorse flaps. However, perforator flaps have recently affirmed even for reconstruction of complex defects. A thorough knowledge of the vascular anatomy of the thorax and of the patient’s medical history is essential for selecting the best reconstructive option. The defect location, size, and depth as well as previous surgeries in the same area are the main issues affecting the reconstructive choices

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The 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

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    “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

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    We 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
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