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
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
Studies on Morphological and Mechanical Properties of Epoxy/Vinylester-MWCNT Nanocomposites
Get PDFThis study investigates the mechanical characterization of epoxy/vinylester multi-walled carbon nanotube (MWCNT) nanocomposites, focusing on key properties such as modulus, ultimate tensile strength (UTS), Izod impact strength, dynamic mechanical analysis (DMA), and surface morphology. The incorporation of MWCNTs into the epoxy/vinylester matrix aims to enhance the mechanical performance by leveraging their exceptional strength and stiffness. Tensile tests were conducted to determine the modulus and UTS, providing insights into the reinforcement efficiency of MWCNTs. Izod impact tests evaluated the nanocomposite’s resistance to sudden impact loading, while DMA was employed to analyze the viscoelastic behavior, including storage modulus, loss modulus, and damping characteristics across varying temperatures. Surface morphology was examined using scanning electron microscopy (SEM) to assess the dispersion of MWCNTs and their interfacial bonding with the polymer matrix. The results demonstrated significant improvements in mechanical properties, indicating the potential of epoxy/vinylester-MWCNT nanocomposites for high-performance applications in structural and functional material
Enhancing Thermal Resilience of Epoxy/VinylesterMWCNT Nanocomposites
Get PDFThe thermal resilience of composite materials is critical for applications in extreme environments, where stability under high temperatures and oxidative conditions is paramount. This research explores improving the thermal stability and resistance to heatinduced oxidative degradation in epoxy/vinylester matrix composites by reinforcing them with multi-walled carbon nanotubes (MWCNTs). Adding MWCNTs to the polymer matrix notably enhances the nanocomposites' thermal characteristics, such as their degradation temperature and resistance to oxidation. To assess the thermal stability and degradation patterns of these composites under accelerated aging, various experimental methods, including thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC), were utilized. Results indicate that MWCNTs act as effective reinforcing agents by promoting a more stable crosslinked structure, enhancing the material’s ability to resist oxidative degradation at elevated temperatures. The study also examines the effect of different MWCNT loadings on the thermal properties, providing insight into the optimal reinforcement concentration for maximum performance. The findings demonstrate that the epoxy/vinylester-MWCNT nanocomposites offer a promising approach to improving the thermal resilience of polymeric materials for high-performance applications in industries such as aerospace, automotive, and electronics
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