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Sebaceoma of the External Auditory Canal
No full textSebaceoma is a benign cutaneous neoplasm that typically presents as a nodule or plaque on the face or scalp. Sebaceomas may be associated with the Muir-Torre syndrome, in which they may be multiple and associated with other sebaceous neoplasms of the skin and multiple adenomatous polyps. We present the case of a young man affected by a sebaceoma of the external auditory canal (EAC). To our knowledge, this is the third reported case of sebaceoma localized in the ear canal. The differential diagnosis and clinical implications are also discussed
SELECTIVE VESTIBULAR NEUROLABYRINTHITIS OF THE LATERAL AND SUPERIOR SEMICIRCULAR CANAL AMPULLA AND AMPULLARY NERVES.
No full textObjective: The diagnosis of vestibular neurolabyrinthitis is based on the sudden appearance of vertigo lasting for hours or days without associated cochlear or central nervous system signs or symptoms. The advent of the video head impulse test (vHIT), cervical vestibular evoked myogenic potentials (C-VEMPs) and ocular vestibular evoked myogenic potentials (O-VEMPs) has provided interesting clinical evidence for evaluating and monitoring the damage to specific compartments of the vestibular apparatus. These various modality of testing individual end-organ function may have a clinical impact on vestibular workup of the neurolabyrinthitis.
Patients and Methods: This report describes three patients with acute vestibular neurolabyrinthitis in whom caloric tests, cervical vestibular evoked myogenic potentials (C-VEMPs), ocular vestibular evoked myogenic potentials (O-VEMPs) and the head impulse test (vHIT) led to a suspicion of peripheral vestibular deficits of the lateral or superior semicircular canals ampulla or ampullary nerves. Conclusion: To our knowledge, these are the first reported cases in which selective damage to the lateral and superior semicircular canals and their nerves caused by neurolabyrinthitis was demonstrated clinically. Our clinical results indicate that the damage can be selective for specific vestibular end organs
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
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