1,720,953 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
Interfacial behaviour in stratified and stratifying annular flows
Get PDFThis thesis describes work which was focused on stratifying annular flow in horizontal tubes. Stratifying-annular flows in horizontal tubes are characterized by the tube being wetted with liquid over its whole periphery but with a tendency for more of the liquid to be present in the layer at the bottom of the tube. For such a condition to exist, there have to be some mechanisms by which the liquid is transported at the top of the pipe in opposition to the influence of gravity. Such flows are typically experienced in hydrocarbon recovery and in many other applications as for instance in gas-condensate lines. Unless the liquid phase (to which a corrosion inhibitor is often added) can adequately wet the top of the pipe, corrosion and ultimate pipe failure may occur in this region; this is a crucial problem for the petroleum industry. Three physical mechanisms have been identified for the transport of the liquid phase to the top of the tube, namely: droplet transport, wave spreading and mixing, and secondary flow. The secondary flow mechanism seems unlikely to contribute significantly and the wave spreading mechanism is only significant in smaller diameter tubes (typically 25 mm). For larger pipes, it is the droplet transport mechanism which is likely to occur; in this mechanism, droplets are entrained from the liquid layer at the bottom of the pipe and transported in the gas core at the top where they deposit to form a liquid film. Two mechanisms of droplet transport seem to be significant, namely ballistic transport in which larger droplets move in a direction governed by their initial release velocity and diffusional transport in which droplets move randomly under the influence of the gas flow turbulence. For pipes of medium diameter (for example in the 78 mm diameter pipe used in the experiments described here), ballistic droplet transport is likely to be the dominant mechanism but diffusional transport is expected to be dominant for large diameter pipes.
The work described in the thesis comprised both experimental and computational studies. In the experimental work, a special visualization method (namely axial view photography) was employed to study the droplet entrainment and transport mechanisms. The distribution of liquid film flow rate around the pipe was determined using a film extractor device. The axial viewing system was used to investigate droplet entrainment in stratifying-annular air-water flows in a 0.078 m diameter horizontal pipe. The process of droplet entrainment was captured using a high speed cine camera. Both ligament and bag breakup mechanisms leading to droplet entrainment were identified. The creation of a ballistic droplet from a ligament was clearly observed. The film flow rate measurements were used in conjunction with previous measurements of droplet mass flux in the core in comparisons with a computational model which aimed to predict the transport of droplets using Reynolds Averaged Navier Stokes (RANS) modelling embodied in a commercial CFD code (CFX). In this model, the turbulent gas core was modelled and the motion of droplets emitted from the liquid layer at the bottom of the pipe was tracked in this turbulent field. Ultimately, the droplets are deposited on the tube wall and the film flow rate may be calculated using the predicted deposition rates as input data. The thesis closes with a description of a numerical experiment aimed at investigating the influence of the turbulence model on droplet transport. Specifically, comparisons were made between RANS and Large Eddy Simulation (LES) models. [For supplementary files please contact author]
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
Author Under Sail The Imagination of Jack London, 1893-1902
No full textIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Intro -- Title Page -- Copyright Page -- Dedication -- Contents -- Acknowledgments -- Introduction -- 1. Spirit Truth -- 2. From Absorption to Theatricality and Back Again -- 3. "I Will Build a New Present" -- 4. Sons as Authors -- 5. Fathers as Publishers -- 6. The Daughter as Author -- 7. Lovers as Authors -- 8. At Sea with the Family -- 9. Yellow News, Yellow Stories -- 10. The Return Home -- Notes -- Bibliography -- Index -- About Jay WilliamsIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Description based on publisher supplied metadata and other sources.Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, YYYY. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries
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