1,720,988 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
Microwave Absorption of Multifunctional Graphene Based Polylactide Acid Composites: Experimental and Numerical Study
No full textThermoplastic polymer piping is increasingly used in a variety of industries. Thermoplastics permit fusion bonding for the joining of pipe sections, which can be performed using joule heating. However, embedding heating wires into the plastic adds fabrication complexity and expenditure. Moreover, joule heating enables only localized heat input that requires moderation to avoid damage in polymers. Another key factor linked to failure with this joining method is joint misalignment. Microwave heating may compensate for these inadequacies, resulting in shorter fusing times, improved heating uniformity, and lower electricity use. This study explores the use of pure graphene nanoplatelets (pGNP) and functionalized GNP (fGNP) to create multifunctional polylactide acid (PLA) composites for high microwave absorption. GNP was treated with tannic acid to produce fGNP. A two-step scalable fabrication procedure, consisting of solution blending followed by hot compression molding was used to obtain the pGNP/PLA and fGNP/PLA composites. The concentration of GNP and fGNP in the composites ranged from 0 to 8 wt%. The resulting composites were characterized for their heat capacity, thermal and electrical conductivity, and complex permittivity. Thermal imaging was used to investigate the efficacy of microwave heating in pGNP/PLA and fGNP/PLA samples as a function of microwave power and filler weight fractions. Multi-physics finite element software was used to explore and simulate the microwave heating mechanism in GNP composites. The experimental results were compared to numerical model predictions for maximum temperature and microwave energy absorbed. The produced nanocomposites were found to exhibit strong microwave absorption and thus rapid heating, making this type of composite a promising candidate for gasket materials that facilitate fusion bonding in thermoplastic-based piping via localized heating
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
Environmental Chamber and Fixture Design for Hydrodynamic Thermal Aging of Coupons and Fibers
Get PDFAccelerated aging of test specimens has always been the staple method for determining long term compatibility for any material in a given range of process conditions. The application of accelerated aging is to simulate real time conditions in an accelerated manner utilizing more severe conditions while maintaining consistency between the test specimens to minimize any unintended deviations of these parameters from target conditions. This thesis explores various designs for holding tensile test coupons and loose fibers along with their advantages and disadvantages. A brief discussion of the fiber aging fixtures are explored and compared. The tensile test coupon aging setup is investigated and described in detail with the use of temperature logging, visual dye tests, and computational fluid dynamics to quantify its effectiveness at maintaining fluid homogeneity and the aging conditions. Initial trials of both the fiber fixtures and tensile test coupon aging setups are discussed along with their initial issues and solutions. As the experiments are ongoing as of writing this thesis, the finalized results are not available for discussion and are also not in the scope of this thesis
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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