1,720,954 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
Mathematical analysis and simulations of groundwater pollution models in Burkina Faso.
No full textTout au long de cette thèse, nous avons étudié théoriquement et numériquement des problèmes d'advection-diffusion classiques et fractionnaires. Pour mener à bien notre étude, nous avons commencé en donnant dans un premier chapitre les préliminaires nécessaires à la réalisation de nos objectifs et nous nous sommes inspirés du problème classique pour donner un sens aux mêmes familles de problèmes avec les dérivées fractionnaires de Riemann-Liouville. Ensuite, dans un deuxième chapitre, nous avons considéré le problème d'advection-diffusion classique puis nous avons construit des schémas numériques Euler explicites en 1D et en 2D associés au même problème en vue d'une comparaison avec le problème fractionnaire pour le cas limite s=1 dans les mêmes conditions de simulations. Enfin dans un troisième chapitre, après avoir remplacé dans le problème classique le Laplacien ∆^( )par un Laplacien fractionnaire 〖(-∆)〗^(s ) 0<s<1, nous avons formé un deuxième problème qui est le problème d'advection-diffusion fractionnaire. Avec ce deuxième problème nous avons construit des schémas numériques de types Euler Explicite et Crank-Nicolson d'une part pour montrer que le Laplacien fractionnaire favorise la diffusion comparativement au laplacien classique et d'autre part pour réaliser une comparaison dans les mêmes conditions de simulations entre les solutions numériques du problème fractionnaire et celles du problème classique pour le cas limite s=1. En outre, dans un quatrième et dernier chapitre, en ajoutant un terme de perturbation -ε∆ C au deuxième problème a conduit à la formation d'un troisième et dernier problème considéré dans le cadre de cette étude qui est le problème d'advection-diffusion fractionnaires avec perturbation. Après avoir étudié l'existence et l'unicité de la solution dans des espaces de Hilbert pour chacun des trois problèmes considérés, nous avons d'une part prouvé la stabilité et convergence des schémas numériques en 1D et en 2D associés à chacun de ces problèmes et d'autre part nous avons réalisé des simulations numériques en dimension 1 et 2 pour chacun des problèmes retenus dans le cadre de cette étude. Le but de ces simulations était de valider les ordres de convergences des schémas numériques associés à chacun des trois problèmes et de montrer d'une part que le problème impliquant un Laplacien Fractionnaire 〖(-∆)〗^(s ) 0<s<1 converge vers le problème classique lorsque s→ 1 et d'autre part que le problème impliquant un terme de perturbation -ε∆ C converge vers le problème non régularisé lorsque ε→ 0.Throughout this thesis, we have studied classical and fractional advection-diffusion problems both theoretically and numerically. To carry out our study, we started by giving in a first chapter the necessary preliminaries to achieve our goals and we drew inspiration from the classical problem to give meaning to the same families of problems with fractional Riemann-Liouville derivatives.Then, in a second chapter, we considered the classical advection-diffusion problem and constructed explicit Euler numerical schemes in 1D and 2D associated with the same problem for comparison with the fractional problem for the limiting case s=1 under the same simulation conditions. Finally, in a third chapter, after replacing the ∆^( ) Laplacian in the classical problem by a fractional Laplacian 〖(-∆)〗^(s ) 0<s<1, we formed a second problem, the fractional advection-diffusion problem. With this second problem we have constructed numerical schemes of the Euler Explicite and Crank-Nicolson types, on the one hand to show that the fractional Laplacian favors diffusion compared with the classical Laplacian, and on the other hand to carry out a comparison under the same simulation conditions between the numerical solutions of the fractional problem and those of the classical problem for the limiting case s=1. Furthermore, in a fourth and final chapter, adding a perturbation term -ε∆ C to the second problem led to the formation of a third and final problem considered in this study, which is the fractional advection-diffusion problem with perturbation. After studying the existence and uniqueness of the solution in Hilbert spaces for each of the three problems considered, we proved the stability and convergence of the 1D and 2D numerical schemes associated with each of these problems, and carried out numerical simulations in 1 and 2 dimensions for each of the problems retained in this study. The aim of these simulations was to validate the orders of convergence of the numerical schemes associated with each of the three problems, and to show on the one hand that the problem involving a Fractional Laplacian 〖(-∆)〗^(s ) 0<s<1 converges to the classical problem when s→ 1 and, secondly, that the problem involving a perturbation term -ε∆ C, converges to the not-regularized problem when ε→ 0
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
- …
