1,720,969 research outputs found
Lymphangioma-like pattern and anaplastic evolution in a case of classic Kaposi's sarcoma
No full text
The effect of glycine-powder airflow and hand instrumentation on peri-implant soft tissues: a split-mouth pilot study.
No full textFifteen edentulous patients with overdentures supported by two implants in the mandibular canine regions received periodontal therapy using both hand instrumentation with Teflon curettes and a glycine-based airflow system. Periodontal probing depth (PPD), bleeding on probing (BOP), and bacterial content (BC) within the gingival sulcus were analyzed. A significant effect modification of the glycine airflow with respect to time was found for PPD (P = .01), BOP (P < .001), and BC (P = .004), which were treated as ordered categorical variables. Glycine airflow may be more effective than Teflon curettes for the maintenance of periimplant soft tissues
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
Anatomic variations of surgical importance in ethmoid labyrinth and sphenoid sinus. A study of radiological anatomy
No full textThe present study was
performed on axial and coronal CT
scans of 100 patients, most of
whom were affected by nasal polyposis.
Five observers had to analyse
the radiograms and answer a
questionnaire including the following
items: presence of a supraorbital
recess; identification of anterior
and p o s t e r i o r ethmoidal
canals; dehiscences in the lamina
papyracea; pneumatized middle
turbinate; presence of a sphenomaxillary
plate; presence of Haller's
cells; presence of Onodi's
cells; relationships of the optic
canal; relationships of the internal
carotid artery; relationships of the
maxillary nerve; relationships of
the vidian nerve; level difference
between the ethmoid roof and
nasal vault; depth of the sphenoethmoidal
recess. The data
obtained were compared with those
drawn from anatomical studies.
The fair agreement between them
proves the value of CT as an alternative
method for studying paranasal
sinuses anatomy
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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