1,720,972 research outputs found
Neoplasie maligne mesenchimali del distretto maxillo-facciale. Problematiche diagnostiche
No full textA clinical case of primary malignant melanoma of the oral cavity
No full textA rare case of primary malignant melanoma of the oral cavity is reported and a literature review of etiopathogenesis, biological bases and prognosis is made. The hypotheses to explain the very severe prognosis of malignant melanoma of the oral cavity with respect to that of skin are discussed. The therapeutic approaches are described as well as the frequent difficulty to perform them in relation to the anatomical region and the wide extension of the tumoral lesion
Doppia Diagnosi
No full textA person with dual diagnosis is a subject that simultaneously presents psychiatric disorders and drug addiction. Below are presents seven cases of individuals with these conditions of the area of Alcamo and treatment conditions. Objectives. trace in general the concept of dual diagnosis and analyse cases at SER.T of Alcamo with the respective treatmen
Malignant mesenchymal neoplasms of the oromaxillofacial area. The diagnostic problems
No full textOral and maxillo-facial mesenchymal malignant neoplasms are rare. They involve nosologic, diagnostic and therapeutic problems. Clinical cases of soft and bone tissue are reported. They share difficulties in clinical, roentgenographic and histopathological diagnosis and often the disagreement between the clinical evidence and the histopathological report. The rule of the immunohistochemistry for a correct characterization of mesenchymal malignant neoplasms and the necessity for correct and early diagnostic definition in order to plain the treatment are emphasized
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
Laparoscopic harvest of the jejunal free flap for cervical esophageal reconstruction.
No full textThe jejunal free flap is a standard technique in the reconstruction of hypopharyngeal and cervical esophageal defects. Conventional harvesting of the jejunal segment is performed with midline open laparotomy, which is associated with complications including prolonged ileus, abdominal pain, wound infection or dehiscence. Laparoscopic resection of the small intestine is a well documented surgical technique. Two different methods of laparoscopic harvest of a jejunal autografts for their cervical implantation have been already described. In both cases, low complication rate and better postoperative course have been observed in the patients treated. During the last 10 years, we have performed 43 circumferential pharyngoesophageal resection for advanced hypo-pharyngeal cancer followed by reconstruction with a free flap of jejunum. All but one the jejunal segments have been harvested with conventional open laparotomy. In the last patient of this group, laparoscopic harvest of the jejunal segment has been successfully performed. In this paper, we describe the laparoscopic technique used and we compare the postoperative course of this patient with those of the patients treated with conventional technique
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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