1,720,959 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
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
Enzymes-encapsulated hydrogels for Electrochemiluminescence (ECL) sensing applications
Full text linkNowadays, the development of innovative biosensors based on non-invasive techniques for a reliable and precise real time detection of vital parameters has become the new frontier for the scientific research. In this thesis, a novel prototype of ECL-based biosensor involving different enzymes is proposed. The primary aim of this project was to determine the possibility to apply an ECL approach to encapsulated and immobilised enzymes for the detection of their activity. Particular attention has been placed on the encapsulation of enzymes to maintain their catalytic properties unaffected. Alginate hydrogels and cryogels have been used as matrices for the encapsulation and the development of an amperometric ECL-based biosensor. Both the entrapment processes have been deeply described and their characterisation is reported. The first ECL-based biosensor examined regards the oxidase enzymes and luminol system. It is well established that the oxidase activity can be determined by measuring the amount of H2O2 produced by the redox reaction between the encapsulated enzyme and its corresponding substrate. The utilisation of luminol is determinant for the ECL emission by reacting with the produced hydrogen peroxide, hence for the investigation of the enzymatic reaction. Different aspects of the oxidase-luminol system have been deepened, including the statistical analysis, Michaelis-Menten study, limits of detection and quantification, interferences, and real sample analysis. The second system disclosed in this thesis regards the ECL-based biosensor concerning the employment of dehydrogenase enzymes, [Ru(bpy)3]2+ and NAD+. These enzymes have been successfully encapsulated into alginate hydrogel matrices following the same procedure adopted for the encapsulation on the oxidase group. Likewise, the electrochemical analysis is reported showing the cyclic voltammetry and ECL results, the statistical analysis obtained from the study of mean and standard deviation of three repetitions for each enzyme leading to the final considerations regarding Michaelis-Menten parameters, limits of detection and quantification. The last section of this work is dedicated to the improvement of the proposed biosensors by examining the electro-polymerisation of the two luminophores. Firstly, the electro-polymerisation of the luminol for the generation of polyluminol is proposed with particular attention on the development of a bilayer system composed of a first layer of ECL-active polymer on the GCE surface and a second layer obtained with the deposition of the encapsulated enzyme to be analysed. Different essential aspects for a successful electro-polymerisation have been discussed namely different scan rates, number of scans, supporting electrolytes and electrolytic solution. The electrochemical analysis is also reported showing a very efficient detection of the different enzymatic activities (glucose oxidase, lactate oxidase, Horseradish peroxide and cholesterol oxidase) through the generation of H2O2 and the consequent reaction with the polyluminol film. The statistical analysis of the bilayer systems is brought showing the promising results of this novel ECL-biosensor. Finally, preliminary results are mentioned regarding the development of a new ECL-active film, not yet reported in literature, gained by applying the electro-polymerisation to [Ru(bpy)3]2+. In like manner, the main features have been investigated to achieve a highly performant ECL-active film on the GCE surface such as different scan rates effect, number of scans and very determinant the supporting electrolyte and solvent used to form the ideal electrolytic solution for the generation of the here named Poly-[Ru(bpy)3]2+. The UV and FTIR characterisation are proposed leading to the discovery of the oligomeric nature of the electro-polymerised film. Preliminary electrochemical tests have been performed by building a bilayer system with the Poly-[Ru(bpy)3]2+ layer and the superimposed alginate hydrogels containing dehydrogenase enzymes. Multiple aspects of this newfound material still need to be investigated and further explored
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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