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
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
Laboratory Experiments to Evaluate the Potential Mobilization of Contaminants from Hard Rock Lithium Mining
No full textHard rock mining of lithium is projected to increase significantly over the next decade due to the demand for lithium in renewable energy. The potential impacts of lithium mine tailings and waste rock from a pegmatite source on water quality are not fully documented. Chemical interactions of lithium mine tailings and waste rock with meteoric water can promote leaching of contaminants from the residual rocks and potentially contaminate associated water. This study utilizes the Leaching Environmental Assessment Framework (LEAF) methods used by the US Environmental Protection Agency (EPA) to assess the potential of contaminants leaching from lithium tailings and possible impacts on water quality. Groundwater, surface water and waste rock samples from an undisclosed hard rock lithium mine site in North Carolina were collected. The results were compared to ecological and drinking water standards set by the EPA, US Geological Survey (USGS) and World Health Organization (WHO) as well as to the quality of effluents extracted from coal ash through the LEAF methodology. Results of the leaching experiments indicate that interactions between water and lithium tailings can cause the mobilization of metals and impact water quality. In all leaching scenarios, low liquid-solid (L/S) ratios caused higher mobilization of trace elements. The experimental acidity conditions affected mobilization of trace elements as well; under acidic conditions (lower than pH 4), the mobilization of beryllium, manganese, nickel, and cobalt are promoted, whereas under both acidic (lower than pH 4) and alkaline (greater than pH 10.5) conditions, zinc, lead, iron, aluminum, chromium, lithium, and uranium are mobilized into the effluents. Uranium in one sample leached 40.62% in pH 2, below the detection limit in pH 7 and 60.9% in pH 13 in comparison to the concentration of the bulk solid. Lead showed a similar pattern with one sample leaching 6.77% in initial pH of 2, below the detection limit in pH 7 and 3.54% in pH 12. These results highlight the dependence of ambient acidity conditions on the mobilization of contaminants from lithium tailings solids. The LEAF tests indicated that the lithium waste rock samples all had a buffer capacity between pH 6-10 in testing conditions between pH 4-10.5 and produced slightly to moderately alkaline effluent between a pH of 7-10 in deionized water. Both the alkaline effluent and high buffering capacity observed in the LEAF tests suggests that the formation of acidic effluent and the potential for acid rock drainage is low. Alkaline water observed in the two samples taken on-site, i.e., one surface water sample and one groundwater sample, supports this finding. A comparison to the effluent chemistry generated from a LEAF experiment of coal ash reveals that industrial effluent from a lithium mine will have less of an impact on water quality than coal ash residuals. Under expected moderately alkaline conditions (pH 9) of both coal ash and lithium residual rock effluent, results showed that concentrations of coal ash effluent exceeded lithium rock effluent concentrations by a factor of 19 for antimony, 130 for chromium and 440 for selenium. This study highlights the need to monitor and manage the conditions at tailings and waste rock storage areas. There were L/S and acidity conditions in the lab setting where contaminants of concern including chromium, lead, uranium, beryllium, cadmium, antimony and thallium mobilized. Although the results of this study cannot be directly applied to field conditions, environmental managers should be aware of the conditions in which contaminants of concern mobilized in the lab setting. The main conclusions are that acid rock drainage is unlikely to occur given that the lithium residual rock samples all produced alkaline effluent, the buffer capacity of the lithium residual rock can reduce the risk of contamination associated with highly alkaline conditions, and lithium residual rock effluent in expected moderately alkaline conditions will have less of an impact than coal ash effluent on water quality
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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