1,720,953 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Production and characterization of eco-cement from municipal solid waste incineration residues
No full textThis research program was aimed at developing cement ecologically from municipal solid waste incineration (MSWI) residues utilizing the wastes, reducing carbon emission and minimizing the natural resource consumption. Two types of eco-cements were produced; one with 100% MSWI residues and the other with 94% MSWI residues and 6% additives, with a clinkering temperature of 1100°C. The eco-cement demonstrated non-hydraulic behavior; however, it could be consolidated upon carbonation activation, forming a binding matrix comprised of amorphous calcium silicate hydrocarbonate, CaCO3, and gypsum. Carbonation activation of eco-cement for two hours showed compressive strength comparable to the 28 days strength of ordinary Portland cement upon hydration. Carbonation up to twelve hours further improved the compressive strength by 50% in comparison to the two hours results. Microstructural studies confirmed chloroellestadite (CE) and belite as the main strength contributors along with CO2 reactive phases in the eco-cement. For a better understanding of the carbonation reactivity and strength contribution of these phases, both chloroellestadite and belite were synthesized. Carbonation cured synthesized CE and belite showed strength behavior similar to that of eco-cement, and the carbonation-derived phases of synthesized compounds confirmed the development of CaCO3, gypsum, and calcium silicate hydrocarbonate as a strength contributing matrix. Eco-concrete slabs were produced to assess the binding properties of the eco-cement with compressive strength comparable to that of OPC concrete. Finally, extensive environmental testing results showed that the clinkering and carbonation curing process helped immobilize the hazardous elements such as heavy metals, organic compounds and dioxin, and furans. These results show that eco-cement can be safely used in commercial applications.Ce travail de recherche a démontré que le ciment peut être fabriqué écologiquement à partir de résidus municipaux d'incinération des déchets solides pour réduire l'émission de carbone, utiliser les déchets et minimiser la consommation de ressources naturelles. Deux types d'éco-ciments ont été produits; un avec des résidus de 100% de MSWI et un avec 94% de résidus de MSWI et 6% d'additifs, avec une température de clintage de 1100 °C. L'éco-ciment a montré un comportement non-hydraulique mais pourrait être consolidé lors de l'activation de la carbonatation, formant une matrice de liaison composée d'hydrocarbonate de silicate de calcium amorphe, de CaCO3 et de gypse. L'activation de la carbonatation de l'éco-ciment par deux heures a montré une résistance à la compression comparable à la résistance d'hydratation de 28 jours du ciment Portland ordinaire. La carbonatation jusqu'à douze heures a encore amélioré la résistance à la compression de 50% par rapport aux résultats de deux heures. Les études microstructurales confèrent au chloroellestadite et au bélite le principal facteur de force et les phases de réaction au CO2 dans l'éco-ciment. Pour une meilleure compréhension de la réactivité de la carbonatation et la contribution de la force de ces phases, le chloroellestadite et le bélite ont été synthétisés. La carbonatation polymérisée ce et le bélite ont montré des analogues de comportement de résistance à l'éco-ciment, et les phases dérivées de carbonatation des composés synthétisés ont confirmé le développement du CaCO3, du gypse et de l'Hydrocarbonat de silicate de calcium comme force matrice contributif. Des dalles d'éco-béton ont été produites pour évaluer les propriétés de liaison de l'éco-ciment avec une résistance à la compression comparable au béton OPC. Enfin, de vastes résultats de tests environnementaux ont montré que le processus de polymérisation et de carbonatation a permis d'immobiliser l'élément dangereux tel que les métaux lourds, les composés organiques et les dioxines et les furannes. Ces résultats ont montré que l'éco-ciment peut être utilisé en toute sécurité dans les applications commerciales
Variations on the Author
Full text link“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
Full text linkWe 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
Full text linkWe 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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