1,720,966 research outputs found
Cancer of the nasal cavity and paranasal sinuses: A new staging system
No full textThis study proposes a new staging system for cancer of the paranasal sinuses on the basis of two concepts. The first concept is that the nasal cavity and the paranasal sinuses form a single unit. Consequently, the mucosa of each sinus may give rise to tumors. The histopathologic variation will be the same for all these cavities. The second concept is that the staging of these tumors depends both on the nature of the neoplastic cells and on the specific bone boundaries which surround the anatomic site and subsites. We analyzed 61 cases and we emphasize the need for a differential analysis of T4 tumors depending on which adjacent region is involved
Cisti aneurismatica del mascellare superiore
No full textAneurismatic Bone Cyst is a benign lesion most frequently localized in the long bones. Localization in facial skeleton is very rare. The Authors report a case of large Aneurismatic Bone Cyst localized in the maxilla. The removal of the lesion was performed through a Le Fort I. Eight years after surgery the patient is doing well with satisfactory morphologic and functional results
Lymphangioma of the tongue. A case report
No full textA case of macroglossia due to lymphangioma is reported. This rare pathology is characterized by slow-growth. When huge dimensions are reached, clinical symptoms are represented by dysphagia, breathing distress, difficulty in chewing and speaking and the appearance of inflammatory processes in the exposed part of tongue. The Authors describe the surgical strategy performed in the reported case
La displasia fibrosa cranio-orbitaria
No full textThe Authors present four cases of cranio-orbital fibrous dysplasia with a follow up of about 14 years. Three of these cases were treated by radical resection and immediate reconstruction with split cranial bone. In one case, owing to the spreading of the disease, orbital decompression, reduction of the frontal bone and its repositioning were carried out. In our phylosophy, when dealing with cranio orbital fibrous dysplasia, the best way of treatment is radical resection, and immediate reconstruction with cranial bone
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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