1,721,016 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
Study of slow light surface plasmons
Full text linkIn this thesis we study and analyze the Slow Light (SL) property of Surface Plasmon–
Polaritions (SPPs) for three cases, for lossless metals, for lossy metals, and for this latter but
considering an active dielectric.
In the first case, we study the qualitative property of SL in SPPs in a metal/dielectric
and dielectric/metal/dielectric waveguide. Despite it is an unrealistic approach, the study is
suitable to understand the general problem.
Then we proceed with the following case when metal losses are considered in both
waveguides. It is here where we observe how the SL property of SPP is affected. In addition,
propagation losses in the SL regime are considerably high such that even when a moderate
high group index can be achieved the propagation length never surpass one micron. It is
why the active medium is opted in order to reduce abortion losses in the metal.
Finally, in the third case we study the effects an active dielectric medium has in the
SL performance of SPPs in the metal/dielectric waveguide. We study two approaches, when
the gain response is constant and when it is a gain distribution function. In the first one we
can see that the SL property of SPP does not improve but only the propagation length. It
means that the natural SL regime of SPPs does not change. On the second method,
however, we observe that, due to the finiteness of the gain response, a new SL region is
induced in the SPP dispersion curve even far from the natural SL region.
In general, this theoretical study is with the aim to understand the property of SL in
SPPs. In this work we introduce a new analysis for the dielectric gain medium that predicts
that, if the gain response is considerably narrow, the SPPs can experience an induced SL
behavior. This approach was not considered before in the study of amplified SL SPPs.En este trabajo de tesis estudiamos y analizamos la propiedad de Luz Lenta (LL) en
Plasmones–Polaritones Superficiales (PPS). Tres casos de estudio se consideran: para
metales sin pérdidas, para metales con pérdidas y para estos últimos, pero considerando un
dieléctrico activo.
En el primer caso, estudiamos cualitativamente la propiedad de LL en PPS en las
guías de ondas, metal/dieléctrico y dieléctrico/metal/dieléctrico. A pesar de que éste es un
enfoque no realista, el estudio es adecuado para entender el problema.
Posteriormente, continuamos con el caso de un metales con pérdidas en ambas guías
de ondas. Es aquí donde observamos cómo la propiedad de LL en PPS y la distancia de
propagación se ven afectadas. Incluso cuando un índice de grupo moderadamente alto se
puede conseguir la distancia de propagación nunca rebasa una micra. Es por ello que un
medio activo es considerado para reducir las pérdidas por absorción en el metal.
Finalmente, en el tercer case estudiamos los efectos que tiene un medio activo en el
desempeño de PPS lentos en la guía de ondas metal/dieléctrico. Estudiamos dos enfoques,
modelo de ganancia constante y modelo de ganancia finita. En el primer caso podemos
observar que la propiedad de LL en PPS no mejora, sólo lo hace la distancia de
propagación. Esto significa que el régimen natural de LL del PPS no se ve afectado. Sin
embargo, en el segundo caso observamos que una nueva región de LL se induce en la curva
de dispersión del PPS. Esta región puede estar incluso lejos de la región natural de LL.
En general, este estudio teórico es con el objetivo de entender la propiedad de LL de
los PPS. En este trabajo introducimos un análisis de ganancia en el dieléctrico nuevo que
predice que, si la respuesta de ganancia es lo suficientemente angosta, el PPS puede
experimentar un comportamiento lento inducido, algo que no se había tocado antes
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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