1,720,956 research outputs found
3D printing application for orthopedic pediatric surgery – a systematic review
No full textPurpose: This paper aims to present a systematic review of the latest scientific literature, in the context of pediatric orthopedics, on the development by additive manufacturing of anatomical models, orthoses, surgical guides and prostheses and their clinical applications. Design/methodology/approach: Following the current guidelines for systematic reviews, three databases (Elsevier Scopus®, Clarivate Web of ScienceTM and USA National Library of Medicine PubMed®) were screened using a representative query to find pertinent documents within the timeframe 2016–2023. Among the information, collected across the reviewed documents, the work focused on the 3D printing workflow involving acquisition, elaboration and fabrication stages. Findings: Following the inclusion and exclusion criteria, the authors found 20 studies that fitted the defined criteria. The reviewed studies mostly highlighted the positive impact of additive manufacturing in pediatric orthopedic surgery, particularly in orthotic applications where lightweight, ventilated and cost-effective 3D-printed devices demonstrate efficacy comparable to traditional methods, but also underlined the limitations such as printing errors and high printing times. Among the reviewed studies, material extrusion was the most chosen 3D printing technology to manufacture the typical device, particularly with acrylonitrile butadiene styrene. Originality/value: To the best of the authors’ knowledge, this is the first systematic review which annotates, from a more engineering point of view, the latest literature on the admittance of the clinical application of additive manufacturing (and its effects) within typical pediatric orthopedic treatments workflows
3D Dental Reconstruction with Photogrammetry Technology
No full textIn the dental field, the use of digital technologies for
scanning of the hard and soft tissues of the mouth is becoming
more and more widespread. The availability of digital 3D models
of the dental arches allows to plan treatments and to show
the results in advance, increasing patient confidence. However,
currently in clinical practice, the accuracy of digital models,
although very satisfactory, does not reach that of traditional
impressions. It also requires the use of technologies that simplify
the hardware structure, making the intraoral acquisition device
more manageable and comfortable. The purpose of this study is to
evaluate how photogrammetry technology, commonly and widely
used and very effective in other sectors, can be adapted to the
dental field, starting from the reconstruction of a dental plaster
cast. By comparing the 3D model obtained with the proposed
technology with a 3D model obtained using the leading top
player intraoral scanners on the market, comparable results were
obtained in terms of reconstruction performance. Both from the
comparison of the spatial alignment and from the comparison
of the shape, a certain overlap and equality between the two
3D models emerge. These results suggest that this technology
could represent a valid solution for the 3D models reconstruction
also in the dental field, overcoming the limitation of technologies
currently used on the market in this field
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
Optimization Of 3D Fused Deposition Modeling Printing Process For The Manufacturing Of Devices For Medical Use
No full textNowadays, the clinical use of 3D printing
technology is of relevant interest. As confirmed in literature, the
applications of 3D Fused Deposition Modeling printing
technology in medicine – such as anatomical models and surgical
guides – help the clinician in the operations of preoperative
planning and surgical simulation. Moreover, the use of 3D
printed orthopedic prosthesis/orthosis has been demonstrated to
be promising. Albeit the advantages of 3D printed devices, there
are still some issues which limits its clinical use, such as the
relevant printing and post-processing time. In this regard, the
aim of this work is to show how it is possible, thanks to
optimizations of the technology and of the process itself, to
reduce the printing and post processing time. This can led to a
current use of 3D printed medical devices in the clinical courses
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
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