1,720,957 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
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
Electrical Properties and Surface Characterization of Thin Copper Films Subjected to Mechanical Vibrations
Full text linkEs van estudiar les característiques mecàniques i elèctriques de les pel·lícules fines de coure unides a laminats epoxi FR4, sota càrrega tèrmica i mecànica. A la 1a etapa, es van determinar paràmetres modals de manera experimental i analítica mitjançant un mètode d’elements finits per a quatre grups de mostres, per tal d’estudiar els efectes geomètrics i la presència d’un forat central de diferents diàmetres. S'ha comprovat que aquestes mides són adequades per utilitzar-se com a plaques de circuits electrònics que experimenten canvis de freqüència significatius que van des de 40 Hz fins a 1 kHz. Es va trobar que la freqüència de ressonància fonamental de tots els exemplars era inferior a 40 Hz i la influència d’un forat central no va ser significativa per afectar les propietats modals.
Durant la segona etapa de la investigació realitzada, es va determinar l'efecte de les vibracions d'alta freqüència sobre les propietats elèctriques. Experimentalment, es va trobar que les tensions induïdes a les pel·lícules primes a causa de l’alta freqüència i el nombre de cicles afecten significativament la resistència de la làmina de material i altres propietats elèctriques com la resistivitat i la conductivitat. Aquestes càrregues mecàniques redueixen en última instància el rendiment elèctric de les pel·lícules fines de coure (PCB). Les imatges SEM van mostrar la formació d'esquerdes a prop de la zona d'alta tensió; aquestes esquerdes propaguen posteriorment la fallada de l'equip. El canvi de temperatura superficial de 25ºC a 45ºC va mostrar un petit canvi en la resistència de la làmina de les pel·lícules de coure primes.
Aquesta tesi ha estat, doncs, una contribució a una millor comprensió de la relació entre l'acumulació de danys i el rendiment elèctric de les plaques PCB i MEMS i pot conduir a millores en la seva fabricació. Això fa que els resultats tinguin una gran importància pràctica i que la metodologia d’assaig desenvolupada es pugui estendre a altres pel·lícules primes.Se estudiaron las características mecánicas y eléctricas de películas delgadas de cobre adheridas a laminados epoxi FR4, bajo carga térmica y mecánica. En la 1ª etapa se determinaron de forma experimental y analítica los parámetros modales como las frecuencias naturales y los ratios de amortiguamiento utilizando un método de elementos finitos para cuatro grupos de muestras, con el fin de estudiar los efectos geométricos y la presencia de un agujero central de diferentes diámetros. Se ha descubierto que estos tamaños son adecuados para su uso como placas de circuitos electrónicos que sufren cambios de frecuencia significativos que van desde 40 Hz a 1 kHz. Se encontró que la frecuencia de resonancia fundamental de todas las muestras era inferior a 40 Hz y la influencia de un orificio central no fue significativa para afectar las propiedades modales.
Durante la segunda etapa de la investigación realizada, se determinó el efecto de las vibraciones de alta frecuencia sobre las propiedades eléctricas. Se encontró experimentalmente que las tensiones inducidas en las películas delgadas debido a la alta frecuencia y al número de ciclos afectan significativamente la resistencia de la hoja del material y otras propiedades eléctricas como la resistividad y la conductividad. Estas cargas mecánicas finalmente reducen el rendimiento eléctrico de las películas delgadas de cobre (PCB). Las imágenes SEM mostraron la formación de grietas cerca de la zona de alta tensión; estas fisuras propagan posteriormente la avería del equipo. El cambio de temperatura de la superficie de 25ºC a 45ºC mostró un pequeño cambio en la resistencia laminar de las películas delgadas de cobre.
Por lo tanto, esta tesis ha sido una contribución a una mejor comprensión de la relación entre la acumulación de daños y el rendimiento eléctrico de las placas de PCB y MEMS y puede conducir a mejoras en su fabricación. Esto hace que los resultados sean de gran importancia práctica y la metodología de ensayo desarrollada se puede extender a otras películas delgadas.Mechanical and electrical characteristics of thin copper films bonded to FR4 epoxy laminates, under thermal and mechanical loading, were studied. At the 1st stage modal parameters such as Natural frequencies and damping ratios were determined experimentally and analytically using a finite element method for four groups of samples, in order to study the geometric effects and the presence of a central hole of different diameters. It has been found that these sizes are suitable to be used as electronic circuit boards that undergo significant frequency changes ranging from 40 Hz to 1 kHz. The fundamental resonance frequency of all the specimens was found to be less than 40 Hz and the influence of a central hole was not significant to affect the modal properties.
During the second stage of the accomplished research, the effect of high frequency vibrations on the electrical properties were determined. It was found experimentally that the stresses induced in the thin films due to high frequency and number of cycles significantly affect material sheet resistance and other electrical properties such as resistivity and conductivity. These mechanical loadings ultimately reduces electrical performance of thin copper films (PCBs). SEM images showed formation of cracks near the high stress zone; these cracks later propagates the failure of the equipment. The surface temperature change from 25ºC to 45ºC showed a little change in sheet resistance of thin copper films.
This thesis has thus been a contribution to a better understanding of the relationship between damage accumulation and electrical performance of PCB boards and MEMS and may lead to improvements of their fabrication. This makes the results of great practical importance and the developed assay methodology can be extended to other thin films
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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