1,721,395 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
Experimental and Numerical Study of Heat Flow under Low-Enthalpy Hydrothermal Conditions
No full textEnergy and its management and environmental impact constitute one of the most important issues in the 21st century. Since fossil fuels are environmentally hazardous and sooner or later are going to be depleted, there is a pressing need for alternatives. Renewable energies, such as solar, wind and geothermal energy are vital sources of energy that are clean and abundantly available. Wind and solar energy sources, in spite of their several advantages, are naturally intermittent. They might not be available at times of peak energy demands and abundant at times of no demand. On the contrary, geothermal energy is available at all times. This makes geothermal energy sources a plausible alternative to fossil fuels. Several types of geothermal energy sources are available, including high, intermediate, and low-enthalpy which have different applications. In countries with low thermal gradients and relatively high permeable aquifers, such as the Netherlands, geothermal energy can be used for space heating using hydrothermal heating plants. A prerequisite to safe, economic and viable geothermal systems is a good understanding of the geology and the physical processes in the sub-surface. In a hydrothermal system, heat conduction and convection takes place in a rather highly disproportionate geometry. This combination of physical processes and geometry make numerical analysis of such a system complicated and resource-consuming. Hence, in developing numerical tools for geothermal systems, important efforts are devoted to tackling the discretization of two main issues: geometry and heat convection. Deep geothermal systems consist of very slender boreholes embedded in a large soil mass. This geometrical peculiarity exerts an enormous computational burden, as a combination of very fine elements (cells) and coarse elements (cells) is normally needed to discretize the physical domain. For three-dimensional systems, this normally requires hundreds of thousands to millions of elements, necessitating parallel computing using multiple processor computers and making the CPU times unrealistic for engineering practice. Additionally, heat flow in a hydrothermal system involves density and viscosity variation with temperature, and thermal dispersion. These phenomena make the problem non-linear and must be well understood and taken into consideration in optimizing a geothermal system. In this thesis, these physical and geometrical issues have been studied experimentally and numerically. The objectives of this thesis are: 1. To investigate the variation of the formation fluid density and viscosity, with temperatures typically existing in hydrothermal conditions. 2. To investigate thermal dispersion due to heat flow in a porous domain. 3. To establish a discretization technique that covers all important features of the hydrothermal system geometry and physical processes, and, at the same time, is computationally efficient such that it can be run on a normal PC (500 MHz, 4GB RAM). 4. To formulate a prototype model for a preliminary estimation of the reservoir lifetime by knowing its porosity and initial temperature for different design parameters, namely, discharge, well spacing and injection temperature. The outcome of the experimental-numerical study in this thesis emphasizes the significance of several manmade and physical parameters on the system lifetime. In conducting a viable design of a hydrothermal system, these parameters need to be carefully evaluated. The proposed prototype model can be utilized in the preliminary phases of a project, from which the project lifetime and consequently the cost and the amount of the extracted energy, can be estimated.Geoscience & EngineeringCivil Engineering and Geoscience
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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