1,721,010 research outputs found
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
The neuronal feedback (NF) technique in third molar surgery
No full textMandibular third molars (M3M) could present themselves in close proximity to inferior alveolar nerve (IAN). Execution of tooth displacement and extraction of third molar roots may result in nerve injuries: neuronal lesions have a frequency that ranged from 0.5% to 8% during surgery of M3M in close proximity to IAN.
Computed tomography (CT) scans are widely used to deter- mine the spatial relation between the IAN and lower third molars. Recently, coronectomy has been introduced for intentional M3M partial removal, in order to avoid IAN lesion, but often a second intervention in years is required and possibility of many complications exists in the post-surgical time, so complete surgical extraction of M3M in close proximity to IAN and presurgical imaging study evaluation are still a matter of interest in international literature. In this sight, we performed a fine literature review considering the possibility of the use of a neuronal feedback (NF) of the patient during M3M surgery in order to completely extract M3M and avoid IAN lesions, and we theorized a new surgical technique for extraction of M3M in close proximity to IAN, requiring the use of CT-scan presurgical study and a particular anesthesia technique.
In this paper, the authors describe a new surgical technique and the outcome on patients requiring M3M surgery in communication with IAN. Recovery of patients has been measured with Health-Related Quality of Life (HRQOL) parameters
Functional outcomes in bilateral temporomandibular joint ankylosis treated with stock prosthesis
No full textThe purpose of this study was to evaluate the functional outcomes in patients affected by bilateral temporomandibular joint (TMJ) ankylosis treated with TMJ total alloplastic reconstruction with stock prosthesis. As a matter of fact, ankylosis of the TMJ may produce the narrowing of the oropharyngeal airway space resulting in the obstructive sleep apnea syndrome, a pathological condition characterized by repetitive upper airway obstructions during sleep, resulting in arousal from sleep, sleep fragmentation, arterial oxygen desaturation. and daytime hypersomnolence. Clinical results demonstrate that total TMJ reconstruction with prosthesis is the surgical modality of choice to obtain the counterclockwise rotation and the advancement of the max-illomandibular complex, which significantly increase the volume of the oropharyngeal airway space in this kind of patients
Conservative surgical and microsurgical techniques for the management of dental implants that impinge on the inferior alveolar nerve
No full textLoss of sensation in the lip after insertion of an implant is annoying. The aim of this paper was to describe two techniques for management of osseointegrated dental implants that impinge on the mandibular nerve, the purpose of which is to improve sensation without unscrewing the dental implant. © 2014 The British Association of Oral and Maxillofacial Surgeons
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