1,720,961 research outputs found
Can deaf students produce causally coherent texts? a comparison between picture sequence-based and non-picture sequence-based narratives.
No full textNuove prospettive di utilizzo dei modelli dentali tridimensionali in ortodonzia
No full textObiettivi
Descrivere i modelli tridimensionali virtuali, strumento di imaging con cui l’ortodontista ha scarsa confidenza poiché il suo utilizzo è stato a lungo prerogativa dell’industria ortodontica. I tempi sono maturi per l’uso delle impronte tridimensionali nella pratica clinica quotidiana e nella ricerca.
Materiali e metodi
Vengono descritti i mezzi che permettono di trasformare i modelli fisici in gesso in modelli virtuali. Sono quindi discussi i possibili vantaggi, quali la modalità di archiviazione dei file e la possibilità di effettuare misure convenzionali (analisi degli spazi). È infine affrontato il tema delle sovrapposizioni.
Risultati e conclusioni
L’esperienza clinica è necessaria per giudicare i setup virtuali eseguiti dall’odontotecnico e guidarlo nella realizzazione di movimenti biologicamente plausibili. La possibilità di sovrapporre per compenetrazione i modelli virtuali apre prospettive inusuali di visualizzazione e confronto dei risultati terapeutici sia nel singolo paziente sia in gruppi di pazienti.Objectives
Three-dimensional virtual models are described. Since orthodontic manufacturers have been for long almost the only operators in the field, orthodontists are non familiar with this imaging instrument. Times are ripe for the use of three-dimensional virtual casts in everyday clinical practice and research.
Materials and methods
This paper reports about the instruments for processing a stone model into a virtual model. Possible advantages like storage of 3D files and the possibility of taking conventional measures (space analysis), are then discussed. Finally the question of the superimposition is considered.
Results and conclusions
Clinical experience is the key factor when judging biological plausibility of dental movement led by a technician, when preparing a virtual setup. The possibility of superimposing virtual models opens up unusual visual perspectives and comparison when considering treatment results of a single patient or a group of patients
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
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
Does the Papilla Preservation Flap Technique Induce Soft Tissue Modifications over Time in Endodontic Surgery Procedures?
No full textIntroduction: The aim of the present controlled clinical trial was to compare 2 incision techniques, papilla base incision (PBI) and sulcular incision (IS), evaluating changes in papilla and recession height over a 12 month period. Methods: A total of 24 subjects requiring endodontic surgery on a single tooth were enrolled. PBI was used in 1 group and IS in the other group. The primary outcomes were changes in gingival recession of the tooth affected by periapical lesions and the mesial and distal teeth and the mesial and distal papilla height using the treated tooth as the reference. Outcome variables were assessed at baseline and 12 months after the surgical intervention. Statistical analysis was performed by a blinded operator through appropriate tests, with significance set at a P value equal to .05. Results: In the PBI group, the papilla height at the 12-month follow-up in the mesial and distal aspect decreased 0.10 +/- 0.32 mm and 0.10 +/- 0.32 mm, respectively, and 0.23 +/- 0.68 mm and 0.25 +/- 0.40 mm, respectively, in the IS group without any significant differences. There were no differences found for recession change values between groups. Conclusions: The PBI and IS approaches in endodontic surgery showed similar results in terms of papilla height preservation and recession changes
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