1,720,962 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
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
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
Industrialization of Ni-μSiC electrodeposition on copper moulds for steel continuous casting
No full textCopper moulds usually used for steel continuous casting suffer from severe wear at relatively high temperatures and low friction loads. The more severe solid friction occurs at about 10-40cm distance from the meniscus, depending on the process parameters, where the temperature is about 300-350°C. The copper moulds have been traditionally coated with hard chromium and actually also with thick nickel deposits even if they present lower wear resistance. The aim of this work was the development of a composite Ni-μSiC electrodeposit with higher hardness and wear resistance than the pure nickel using the existing plating bath and commercially available SiC micro-powders. Different types of SiC micro-particles have been purchased and Ni-μSiC deposits have been produced and analyzed, initially, in laboratory scale to evaluate the ability of the powders to be codeposited into the nickel matrix. After the choice of the SiC powder and the determination of the plating parameters a pilot 6000 lt plating tank has been equipped with a system of Venturi pumps in order to maintain the particles in suspension. Preliminary tests have been performed in industrial scale to evaluate the process parameters such as anode-cathode distance, applied voltage, plating time and pumps positioning effect onto the SiC content and its distribution in the nickel matrix. The produced specimens have been observed by Metallographic microscope and Scanning Electron Microscope in cross section to evaluate the SiC content and the microstructure of the nickel matrix. Vickers microhardness measurements have been also performed in cross section and revealed that the co-deposition of the SiC micro-particles leads to a microhardness increase of about 180%. Wear tests at both room temperature and at 350°C have been performed on pure nickel deposits and composite nickel deposits and the wear tracks have been analyzed using both a profilometer and SEM to determine the wear both coefficient and mechanism of each coating. The testing results revealed that the developed Ni-μSiC deposit exhibits a much higher wear resistance in comparison to pure nickel deposits at high temperature and the production process can be easily transferred in industrial scale with slight modifications of the existing deposition plants. Real scale copper moulds have been finally coated with Ni-μSiC composite deposits and are presently under testing in actual working conditions at a steel producing plant
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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