1,720,957 research outputs found
Alveolar distraction in post traumatic mandibular atrophy : report of two cases
No full textThe main indication to use vertical alveolar distraction is post-traumatic mandibular atrophy. This technique allows to obtain an adequate bone volume for insertion of osseointagrated implants. The authors present in this article two patients cases in whom alveolar vertical distraction was applied to atrophy post-traumatic, using endoral twin track distraction. In both cases it was prepared a stereolithography model to mimic the box of the bone to be distracted, to align the preoperative distractor and to obtain the more effective carrier. At the distractive stage followed the implant prosthesis stage which was designed to rehabilitate the previously atrophic bone area. In both patients it has been possible to insert the planned number of implant
Bilateral SMAS rhytidectomy in parotid recurrent pleomorphic adenoma
Full text linkA case is presented of a young female with parotid recurrent pleomorphic adenoma and skin infiltration treated with subtotal parotidectomy combined with a bilateral superficial muscular aponeurotic system rhytidectomy
Esthetic eyebrow approach for frontal sinus fractures reduction
No full textAim. In cranio-facial traumas, isolated fractures of frontal sinus anterior wall are peculiar for the mainly esthetic indication of reduction. In these traumas surgical treatment planning, the surgical approach has to be balanced with the clinical problem, respecting the aesthetic of the upper third of the face.
Methods. The Authors present the results of a retrospective study obtained by the use of clinical criteria and a self-assessment test provided to the patients that presented a fracture of the anterior wall of the frontal sinus. Surgery was performed through a trans-cutaneous aesthetic eyebrow approach.
Results. Postoperative CT scan showed appropriate reduction of displaced bone fragments in all cases.
Conclusion. The surgical approach described is a safe procedure with minimal morbidity and can offer an excellent surgical approach in parallel with an excellent aesthetic resul
Microcystic adnexal carcinoma of the centrofacial region : a case report
Full text linkMicrocystic adnexal carcinoma is a rare, locally aggressive neoplasm with both eccrine and follicular differentiation and a high probability of perineural invasion of the centrofacial region. Given the histopathological features of this tumour, early diagnosis is essential for adequate management. This report refers to a case of microcystic adnexal carcinoma of the nasogenial region, with infiltration of the deep planes extending to the anterior wall of the maxillary sinus. Surgical treatment involved wide demolition of the centrofacial region followed by reconstruction using four locoregional flaps: an Indian flap and a Mustardé flap were used for cutaneous reconstruction; a septal flap to support the maxillogenial region; a mucosal flap to separate the nasal cavities
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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