1,720,956 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
Modelo flexible de movimiento de torso, brazo, antebrazo y muñeca
Get PDFHuman motion analysis is an open research area that focuses on explaining,
by using different kind of sensors, the movements made by a person
and how they are accomplished. An important task of this research area is
proposing computational models able to represent human motion.
People move differently from each other, and some factors such as the
age or loss of physical abilities change their motion patterns, for that, it
is necessary to develop, on one hand flexible methods and motion models;
i.e. able to represent the movements of several groups of people, and on the
other hand simple ones; i.e. based on unsophisticated instruments, such as
wearable systems.
The main goal of this research is proposing and implementing a flexible
motion model based on signals of wireless inertial sensors and an electromyograph
to represent the motion of the trunk, arm, forearm and wrist of
a person with or without motion impairments. This motion model could
be used as a tool to analyze in detail the motion of people to determine
quantitatively the differences in their range of motion.
The developed model represents the motion of ten degrees of freedom of
the body: three of the trunk, three of the shoulder, two of the elbow and
two of the wrist. Our motion model is divided into two parts, on one hand,
the first part consists of a kinematic model that uses the information given
by three inertial measurement units to represent the motion of the trunk,
arm and forearm. On the other hand, the second part consists of a model
based on an ensemble of classifiers able to represent the motion of the wrist
by analyzing characteristics obtained through the electromyographic signals
of the forearm.
Two experiments were conducted in order to validate both parts of us
motion model. For the kinematic model, a reaching task was used as case
study and movement trajectories were compared. Namely, the trajectories of
the nape, arm and hand of five healthy people and one apoplexy patient obtained
through our motion model and through an optical system comprising eight cameras used as our ground truth. For the model based on the ensemble
of classifiers six decision trees were generated. A classification task of
the movements of the wrist of fifteen healthy people was accomplished using
two different data distributions, a random distribution and a distribution
based on individuals.El análisis de movimiento humano es un área de investigación abierta
donde se busca explicar, a partir de diversos tipos de sensores, qué movimientos
realiza una persona y cómo los realiza. Una tarea importante de esta
área de investigación radica en proponer modelos computacionales capaces
de representar el movimiento humano.
La manera de moverse varía de una persona a otra, y algunos factores
como la edad o la pérdida de capacidades físicas modifican los patrones de
movimiento, por ello, es necesario desarrollar métodos y modelos de movimiento
flexibles, por un lado; es decir, con capacidad de capturar el movimiento
de varios grupos de personas, y simples por otro lado; es decir, que se
basen en instrumentos no sofisticados, como lo son los sistemas “vestibles".
El objetivo de esta investigación es proponer e implantar un modelo
de movimiento flexible basado en señales de sensores inerciales y un electro miógrafo inalámbricos para representar el movimiento del torso, brazo,
antebrazo y muñeca de una persona que tenga o no limitaciones de movimiento.
Este modelo de movimiento podría servir como una herramienta
para analizar de forma detallada el movimiento de las personas y así determinar
de manera cuantitativa las diferencias en sus grados de movilidad.
El modelo desarrollado representa el movimiento que generan diez grados
de libertad del cuerpo: tres del torso, tres del hombro, dos del codo y dos
de la muñeca. Nuestro modelo de movimiento se divide en dos partes, la
primera es un modelo cinemático que utiliza la información de tres unidades
de medición inercial para representar el movimiento del torso, el brazo y
el antebrazo. Y, por otra parte, se cuenta con un modelo basado en un
ensamble de clasificadores, el cual se encarga de representar los movimientos
generados por la muñeca al analizar características extraídas de las señales
electromiografícas del antebrazo.
Se realizaron experimentos para validar las dos partes de nuestro modelo
de movimiento. Para el modelo cinemático se utilizó una tarea de alcance
como caso de estudio y se compararon las trayectorias del movimiento de la nuca, del brazo y de la mano de cinco personas sanas y de un paciente que
sufrió una apoplejía obtenidas por medio de nuestro modelo cinemático y por
medio de un sistema óptico de ocho cámaras que sirve como nuestro ground
truth
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
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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