1,721,066 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
E&P Notes (June 2017)
No full textE&P Notes
With New Advance, Natural Gas Filtering Technology Moves Closer to Commercial Reality
Trent Jacobs, JPT Digital Editor
Researchers at Rice University in Houston have advanced their efforts to develop a low-cost and relatively simple-to-make filtering material for carbon dioxide separation and capture. Their aim is for this new material to be used at natural gas gathering facilities where it will absorb carbon dioxide from natural gas streams while allowing the methane product to pass through.
JPT featured the work in 2014 and, since then, the researchers say they have figured out how to optimize their process to make the material, described as a porous-carbon sorbent, to address the different chemical makeups of natural gas sources.
The project has received funding from US independent operator Apache Corporation. The latest details were published last month in the Royal Society of Chemistry’s journal, Sustainable Energy & Fuels.
US Gulf of Mexico Hits Record Production
Trent Jacobs, JPT Digital Editor
Average oil production in the US Gulf of Mexico reached a new benchmark of 1.6 million B/D in 2016, topping the previous record set in 2009 by 44,000 B/D. January’s average production reached 1.7 million B/D, marking a fourth straight month of increases for the offshore region.
These figures were published by the US Energy Information Agency (EIA), which predicts that crude output from the US Gulf will continue to rise into 2018.
Last year, there were eight offshore projects commissioned in the offshore basin, including Shell’s 50,000 B/D Stones floating production facility that started up in September and Anadarko’s 80,000 B/D Heidelberg spar platform which achieved first oil in January. Seven more projects are slated to start up this year.
Foamer Developed To Help Corrosion, Scale Inhibition
Stephen Whitfield, Senior Staff Writer
Wet-gas production in east and central Texas can often be a complicated process, as corrosive fluids in gas wells often lead to significant deposition of iron sulfide scale in production tubing. Speaking at the SPE Oil-field Chemistry Conference, Jonathan Wylde discussed the challenges in creating a chemical component to deliquefy gas wells while reducing corrosion and preventing iron sulfide scale. Wylde is the global head of application development at Clariant Oil Services.
The gas wells are located in the Teague field in east central Texas. There are several producing reservoirs in the field, but the Upper Jurassic Bossier and Cotton Valley Lime reservoirs are the most prolific. Wylde said the gas produced by the two reservoirs has different characteristics, which indicates that they come from different source rock despite being in the same field. The Bossier Sands are a blend of centered gas accumulations and prograding deltaic channel systems with minimal formation water, and the Cotton Valley Lime is an oolitic shoal trend with higher porosity zones that can produce significant amounts of water and hydrogen sulfide (H2S).
University Consortium Prepares for Spike in Decommissioning
Eric van Oort, Director, Consortium for Decommissioning and Abandonment
In the music world, a coda is the final section of a movement or composition. Appropriately, it is also the acronym for the Consortium for Decommissioning and Abandonment (CODA), a University of Texas at Austin (UT)-led initiative that is designed to bring together members of industry and academia to help operators efficiently orchestrate the final days of deepwater developments. The CODA is a response to the growing number of onshore and offshore wells, platforms, and infrastructure that are approaching the end of economic viability and soon must be plugged and removed.
In the Gulf of Mexico deep water alone, for example, 2015 abandonment costs were estimated by IHS Markit to be about USD 2.5 billion. That number is expected to rise by more than 500% to USD 13.2 billion by 2040. Abandonment expenses are particularly onerous to operators because unlike other operating costs, plug and abandonment (P&A) operations offer no prospect for return on investment. The consortium is working to minimize the economic impact on operators and to ensure effective P&A operations through the development of innovative technologies. The approach replicates industry efforts over past decades to develop new technologies with which to drill and complete wells in various challenging environments around the world.</jats:p
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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