1,720,953 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
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
Investigando as propriedades estruturais e magnéticas de nanopartículas de Cr2O3 dopadas com Mn
No full textEsta pesquisa explora as propriedades estruturais e magnéticas de nanopartículas (NPs) de
óxido de cromo dopado com manganês (Cr₂O₃), sintetizadas pelo método sol-gel à base de glicina.
O trabalho concentra-se na substituição sistemática de íons Mn²⁺ na rede do Cr₂O₃ e investiga seu
impacto nas características estruturais e magnéticas do material. Foram sintetizadas nanopartículas
com diferentes concentrações de dopagem de Mn²⁺ (x = 0, 0,01, 0,10 e 0,30) para avaliar como a
dopagem influencia os parâmetros da rede, os defeitos intrínsecos e o comportamento magnético.
A caracterização estrutural por difração de raios X (XRD) confirmou a pureza de fase das
nanopartículas sintetizadas. O refinamento de Rietveld, realizado com o software FullProf, revelou
que a dopagem com Mn²⁺ causou um deslocamento dos picos de difração para ângulos menores,
indicando expansão da rede, além de um leve alargamento dos picos, associado à deformação da
rede e à presença de defeitos estruturais intrínsecos. Esses resultados destacam a influência dos
íons Mn²⁺ na estrutura cristalina do Cr₂O₃.
As propriedades magnéticas foram avaliadas usando magnetometria de dispositivo de interferência
quântica supercondutora (SQUID). Os resultados evidenciaram mudanças significativas na
ordenação magnética devido à dopagem com Mn²⁺, atribuídas ao mecanismo de substituição de
íons Mn²⁺ por íons Cr³⁺ na rede do Cr₂O₃. Essa substituição também resultou na formação de
vacâncias de oxigênio e distorções na rede, que, em conjunto, influenciaram as propriedades
eletrônicas e magnéticas do material.
O estudo demonstra que a dopagem do Cr₂O₃ com Mn²⁺ introduz modificações estruturais e
eletrônicas que potencializam as interações magnéticas. Esses resultados fornecem insights
valiosos sobre a relação entre a concentração de dopagem, as mudanças estruturais e o
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comportamento magnético, avançando o entendimento do Cr₂O₃ dopado com manganês como um
nanomaterial versátil. As descobertas têm implicações para o desenvolvimento de materiais com
propriedades ajustáveis para aplicações em spintrônica, armazenamento magnético de dados e
outras tecnologias emergentes.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPESIn this work, we present an in-depth study of the structural and magnetic properties of Mn-Cr₂O₃
NPs, synthesized using the glycine-based sol-gel method. The introduction of Mn²⁺ ions into the
Cr₂O₃ lattice was systematically investigated to understand its impact on the material’s physical
properties, positioning it as a potential candidate for applications in spintronics and magnetic data
storage. Cr2-xMnxO3 (0.00 ≤ x ≤ 0.30) NPs were synthesized, characterized, and analyzed to reveal
the effects of doping concentration on their structural and magnetic behavior.
The crystalline structure and phase purity of the NPs were determined using XRD. Detailed
analysis through Rietveld refinement, conducted using FullProf, demonstrated a systematic shift
of diffraction peaks to lower angles with increasing Mn²⁺ doping concentrations, indicative of
lattice expansion. A slight broadening of the peaks was also observed, attributed to lattice strain
and the formation of intrinsic structural defects. These results provided quantitative insights into
doping-induced modifications to the crystal structure.
Magnetic properties were studied using Superconducting Quantum Interference Device (SQUID)
magnetometry to investigate how Mn²⁺ substitution influences magnetic ordering and electronic
states. The substitution mechanism of Mn²⁺ ions for Cr³⁺ ions in the Cr₂O₃ lattice was closely
examined, along with the formation of associated defects such as oxygen vacancies and lattice
distortions. The collective effect of these factors on the observed magnetic behavior was analyzed
in detail.
The results demonstrate that Mn²⁺ doping induces significant structural and electronic changes in
Cr₂O₃, leading to enhanced magnetic interactions. These findings deepen the understanding of the
relationship between doping concentration, structural modifications, and magnetic properties in
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Mn-doped Cr₂O₃ systems. The work contributes to the broader field of NPs, offering valuable
insights into the design of advanced materials with tailored properties for emerging technological
applications.São Cristóvã
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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