1,720,955 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
Modelling of Magnetization Processes of 3D-Printed Fe-Si Components by Means of an Artificial Neural Network Implemented in a FEM Scheme
No full textIn this paper the magnetization processes and power losses in an additively manufactured Fe-Si alloy with 3.7% wt. Si are studied. The material sample of interest is structured with air gaps to limit the dynamic losses by eddy currents. The magnetic behaviour of the material is modelled using an artificial neural network (ANN) trained on the experimental quasi-static hysteresis loops of the material, using a sample with the same geometry but a full section without gaps. The predictions are verified on a test set of experimental loops not involved in the training phase of the ANN. The ANN is later implemented in COMSOL Multiphysics®to simulate in a finite element method (FEM) scheme the dynamic losses of the sample with air gaps and compared with the measurements to validate the results
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
Application of active thermography for the study of losses in components produced by laser powder Bed fusion
No full textThe quality of the components produced is guaranteed by two types of methods, destructive and non-destructive (NDT). In the first case, a product that corresponds to a specific production lot is taken and it is broken to evaluate its properties. Instead, in the case of non-destructive testing, the piece is not sacrificed but the mechanical, electrical, and magnetic properties of the piece in question are obtained through special techniques. These NDT techniques are very interesting in the case of pieces produced using Additive Manufacturing (AM) technology. The reason lies in the fact that production volumes are low, and the costs of raw materials and electricity are currently high, therefore production waste is reduced. This work focuses on the use of the active thermography technique as a tool for characterizing the electrical and magnetic properties of a component produced using the Laser Powder Bed Fusion (LPBF) technique in FeSi2.9% ferromagnetic material. The results of this investigation are very interesting, as they allowed the authors to characterize the losses of this material both from a qualitative and quantitative point of view. The choice of this material lies in the fact that it is also widely used in the literature as a material for the construction of AM electric motors. This kind of characterization, exploiting the active thermography technique, is a novelty for this kind of material produced using the LPBF technique
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
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
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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