1,721,495 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Get PDFWe 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
Reconstruction of ankylotic and resected mandibular condyle by transport distraction osteogenesis
No full textpublished_or_final_versionabstractDentistryDoctoralDoctor of Philosoph
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe 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
Maxillectomy reconstruction by transport distraction osteogenesis
No full textpublished_or_final_versionDentistryDoctoralDoctor of Philosoph
Medical imaging in management of mandibular asymmetry
No full textMandibular asymmetry secondary to unilateral condylar hyperplasia (UCH) or asymmetric mandibular hyperplasia (AMH) is common in Hong Kong. The aims of this study are to investigate the roles of medical imaging (single-photon emission computed tomography (SPECT) and conebeam CT (CBCT)) in: (1) investigation of the condylar activity in mandibular asymmetry secondary to UCH and AMH; (2) surgical planning in patients presented with complex asymmetry; and (3) evaluation of the association between asymmetry and patients’ quality of life (QoL) and psychosocial well-beings, and the changes at 1-year after surgery.
(1a) A retrospective study on mandibular asymmetry by planar scintigraphy was performed in 109 patients to compare UCH and AMH. (1b) A prospective study on a separate 62 patients with UCH or AMH to compare the condylar activities of each side using SPECT scintigraphy. The quantitative analysis included condylar activity percentage (CA%) and condylar activity ratio (CAR). (1c) 21 patients with valid cone-beam CT (CBCT) data were selected for correlation analysis with the scintigraphic findings. The results from the 3 studies are summarized as follows: A significant difference in CA% between UCH and AMH in both planar and SPECT scintigraphy. Serial analysis of the scintigraphic data in patients with initially active mandibular asymmetry showed an increase in CAR followed by reduction once the asymmetry had become inactive, while CA% percentile difference showed minimal change. The serial change in CAR was corresponding to the change in condylar activity. Correlation analysis revealed significant association between scintigraphic activity and condylar dimensions. Obvious difference was found between UCH and AMH: UCH showed differences in condylar dimensions and posterior ramus height; and AMH showed morphological differences between the left and right posterior ramus including condyles but without non-significant difference in dimension.
(2) An new treatment strategy was developed for patients with complex mandibular asymmetry with the use of steroemodel planning and surgical navigation. A case was used to illustrative this technique achieving excellent result. This combination has greatly facilitated the correction of complex mandibular asymmetry with severe occlusal disharmony .
(3) Thirty-two patients who were ready for surgical correction of mandibular asymmetry were recruited for evaluation of the patients’ reported outcome measures. The evaluation was conducted before surgery, 1- & 6- week, 3-, 6- and 12-month after surgery using a set of self-administered quality of life and psychosocial questionnaires including SF-36, OHIP-14, Orthognathic Quality of Life (OQLQ), Hospital anxiety and depression scale (HADS), Satisfaction with life scale (SWLS) and Hope scale. 20 patients with valid pre-surgical CBCT were selected for the correlation analysis. Results showed that patients with mandibular asymmetry were more anxious, depressed and had poor QoL. CT correlation analysis revealed both dental midline deviation and occlusal canting had significant association with OHIP, OQLQ and HADS. Surgical correction could bring significant improvement of QoL (in OHIP 14 and OQLQ) but not the psychosocial well-beings.published_or_final_versionDentistryDoctoralDoctor of Philosoph
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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