1,721,032 research outputs found
Editorial Special Section on Liquid Dielectrics
No full textThis Special Section is part of a sequel of IEEE Transactions on Dielectrics and Electrical Insulation (TDEI) dedicated to papers focusing on liquid dielectrics which are normally published every three years. The tradition of having a number of issues on liquid dielectrics was initiated at the end of the last century by the IEEE TDEI Editor-in-Chief Prof. A. van Roggen and kept on by Prof. R. Hackam and Prof. E. Cherney. Starting in 2020, this tradition was maintained and relaunched by the actual IEEE TDEI Editor-in-Chief, Prof. Michael Wubbenhorst. Massimo Pompili (MP) has been involved as a Guest Editor of IEEE TDEI Special Issues on Liquid Dielectrics quite from the beginning (TDEI, vol. 5, 1998), at that time in cooperation with Prof. Ray Bartnikas and Prof. Carlo Mazzetti; this effort went on periodically, and from 2018, MP is sharing this role with Luigi Calcara (LC), a younger colleague at the University of Roma “La Sapienza,” Rome, Italy. The present 2023 Special Section was handled by Massimo Pompili, Luigi Calcara, and Issouf Fofana (IF) from the University of Quebec at Chicoutimi, Saguenay, QC, Canada. Hopefully, MP, LC, and IF will care also about the next Special Issue on Liquid Dielectrics expected for the end of 2026 or the beginning of 2027
The Gassing of Insulating Fluids
No full textSince the end of the 1950s, the extraction of dissolved gases from an oil sample and the determination of the nature and concentration of these gases have been serving as a means of faults detection. The type and extent of a defect can often be diagnosed from the composition of the gases and the rate at which they are produced. This technique, known as Dissolved Gas Analysis (DGA) for detecting certain categories of faults in oil-filled devices that cannot be readily detected by other conventional methods, remains one of the most widely used today. Although there is general consensus that increasing the concentration of dissolved gas is a precursor of local deterioration of insulation, opinions differ when it comes to interpretation of the symptoms. Consequently, the first step towards improving the accuracy of DGA techniques should be understanding the mechanisms associated with chemical reactions contributing to the generation of fault gases in transformer oils. This article intends to show how the chemical composition of the insulation system may affect the analyses. Some data was also included for further understanding
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
Power Transformer Diagnostics, Monitoring and Design Features
No full textThe reliability of the power grid system directly contributes to the economic well-being and the quality of life of citizens in any country. [...
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
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