1,720,963 research outputs found
O-080. Microvascular tongue reconstruction after glossectomy.
No full textAims: Free flaps represent an ideal technique for tongue reconstruction. The authors present their experience with 63 cases of tongue reconstruction after glossectomy, partial subtotal and total, in patient with oral cancer. Methods: Between 1992 and 2000, 63 patients was treated with primary tongue reconstruction, 18 rectus abdominis free flaps and 27 forearm flaps were used. In the remaining 18 cases, partial mandibulectomy required additional reconstruction techniques: in 12 case we used a forearm free flap with reconstruction plate, in three cases a forearm and fibular composite flap was performed, in two cases fibular free flaps alone were used, and in the last case a fibular flap was combined with a pectoralis pedicled flap. Evaluation of speech and deglutition was performed during follow-up. Results: All flaps were transferred successfully. Two microvascular complications occurred during the post-operative period; correct diagnosis and prompt treatment saved the flaps. Conclusion: Ours reconstruction techniques offer unquestionable advantages above other reconstructive techniques such as the pedicled flaps: best functional results, less hospitalization period
O-081. Secondary oro-mandibular reconstruction with composite free flaps
No full textAims: Patients presenting for secondary oro-mandibular reconstruction have a unique set of problems; these include the presence of soft tissue contracture that displaces the mandibular segments in malposition and soft tissue deficiencies, making surgical correction more difficult and potentially more hazardous. Vascularized bone-containing free-flaps are indicated in secondary oro-mandibular reconstruction where both hard and soft tissues replacement is needed or when the recipient bed is unfavorable due to previous surgery and/or radiation. Methods: The authors present their experience with 30 cases of secondary oro-mandibular reconstruction treated in the period from September 1995 to September 2000, using bone containing free flaps. Two different donor sites were used to harvest bone-containing free flaps: iliac crest in 12 cases and fibula in the others. In nine cases the flap was only osseous, in four cases osteomuscular (iliac crest free flap) and in the other cases osteocutaneous. Result: Total flap necrosis occurred only in one case of iliac crest free flap for venous thrombosis; in two cases necrosis of the skin component of the flap was observed. In two radiated patients we observed perforation of the skin by the reconstruction plate and in three patients intraoral dehiscence occurred. Conclusion: The introduction of vascularized bone containing free flaps transferred from distant sites by microvascular techniques has revolutionized mandibular reconstruction. Vascularized bone transferred into tissue beds compromised by salivary contamination and previous irradiation and the rational use of the soft tissue components of the flap permit also the restoration of articulation, deglutition and mastication with quality of life better than nonvascularized alternatives
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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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