1,720,959 research outputs found
Direct digital manufacturing of shoe heels through Fused Deposition Modeling
Full text linkAdditive manufacturing process chains for direct part production in the footwear sector are being investigated almost exclusively for athlete shoe soles and orthotics. This paper focuses on the direct digital manufacturing of high heels for woman shoes, which could provide solutions for personalized production and complex design for high added-value shoes. The study aims at testing the introduction of additively manufactured components into conventional shoe production lines. Sample heels of two common designs have been fabricated by the Fused Deposition Modeling technique, assembled with conventional mounting machines, and tested for wearability according to standard procedures. The experimentation has shown that fully process compatible and functional heels can be produced for a basic design under some restrictions, and has allowed to identify critical issues to be dealt with for future applications on more critical heel shapes. These results will help to develop methods for a robust heel design exploiting the flexibility and creative freedom allowed by additive processes
Edge quality in Fused Deposition Modeling: II. Experimental verification
Full text linkPurpose – To provide an experimental evaluation of geometric errors on the edges of parts manufactured by
the FDM process.
Design/methodology/approach – An experimental plan was conducted by building parts in ABS
thermoplastic resin on a commercially available machine with given combinations of the three geometric
variables (inclination, included and incidence angle) defined in the first part of the paper. Edges on built
parts were inspected on a 2D non-contact profilometer to measure position and form errors.
Findings – The analysis of measurement results revealed that the edge-related variables have significant
influences on the geometric errors. The interpretation of error variations with respect to the different angles
confirmed the actual occurrence of the previously discussed error causes. As an additional result, quantitative
predictions of the errors were provided as a function of angle values.
Research limitations/implications – The experimental results refer to fixed process settings (material, FDM
machine, layer thickness, build parameters, scan strategies).
Originality/value – The two-part paper is apparently the first to have studied the edges of additively
manufactured parts with respect to geometric accuracy, a widely studied topic for surface features
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
La forma calzaturiera : spunti di innovazione e prototipazione funzionale
No full textLAUREA SPECIALISTICALa seguente Tesi di Laurea Magistrale tratta della
forma calzaturiera come elemento fondamentale per la creazione
di innovazione all’interno del settore calzaturiero. Se ne analizzano
caratteristiche, requisiti e processi produttivi, in riferimento
al sistema produttivo italiano, al fine di determinare spunti di
innovazione possibili e auspicabili. In particolare ci si concentra
quindi, sulla prototipazione funzionale della forma all’interno del
calzaturificio al fine di migliorare l’efficenza e la velocità delle
fasi di sviluppo della calzatura. Dopo aver effettuato alcuni studi
preliminari riguardanti i materiali, gli abbozzi e lo snodo, si analizza
a fondo il tema della ferratura e si propongono due soluzioni per
realizzare questa lavorazione anche al di fuori del formificio, in fase
di prototipazione della calzatura.The work analyzes the shoe last as a essential element in the pursuit of innovation for the footwear industry.
Its characteristics, requirements and processes are studied, with reference to the Italian production system, to determine possible and desirable cues for innovation. In particular, there is a focus on the prototyping of the shoe last within the shoe factory, to improve the efficiency and smartness of the early stages of the footwear development. After some preliminary analysis about the materials, the rough shoe last, and the hinge, the plating phase is fully examined and two solution are proposed to make this process doable even outside the shoe last factory, in the protyping of the shoe
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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