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
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
Interfacial electroactive assemblies: from molecular electronics to biological applications
Full text linkSpontaneously adsorbed monolayers of di-6A, 6B-deoxy-6-(4-pyrid-ylmethyl)amino-ƴ-cyclodextrin (ƴ-CD-(py)2) were formed on platinum electrodes. AC voltammetry showed significantly lower capacitance values for electrodes exposed to ƴ-CD-(py)2 solutions overnight compared to bare electrode values. Co-adsorption of 1-nonanethiol in the
presence of a 10-fold excess of cavity guest 1-adamantylamine created layers which exhibited greater blocking ability to the solution phase probe [Fe(CN)6]4−. Complete blocking was achieved by insertion of a high-affinity guest 1-adamantylamine into the cavity. Raman spectra of the ƴ-CD-(py)2/1-nonanethiol layer exhibited features associated with both pyridine-functionalised CD and alkane moieties. Significantly, co-adsorption of 1-nonanethiol dramatically effected the ability of the
ƴ-CD-(py)2 layer to complex the electroactive, high affinity guest, [Co(biptpy)2]2+. A redox response for the Co2/3+ couple was not observed at the pure ƴ-CD-(py)2 layer, but the molecular recognition properties were turned on by co-adsorbing the alkanethiol molecules with the
CD layer. The binding of [Co(biptpy)2]2+ to co-adsorbed monolayers depends on the bulk concentration of guest and was modelled by the Langmuir isotherm, yielding a free energy of adsorption, △Gads, of -29 kJ.mol−1 for the Co2+ state and a limiting surface coverage 1.49 ± 0.25
x 10−11 mol.cm−2. The rate of electron transfer from the cobalt metal center to the electrode surface was found to be of the order of 1 x 105 s−1 by high speed chronoamperometry.
Molecular junctions incorporating monolayers of
ƴ-CD-(py)2, co-adsorbed with 1-nonanethiol have been formed by bringing macroscopic platinum and mercury electrodes together. The mercury electrode was either modified with an alkanethiol layer for bi-layer junction formation,
or remained unmodified for monolayer junction formation. The junctions were characterised by determining the effect of junction thickness on the magnitude of the tunnelling current through alkanethiol layers. A tunnelling co-efficient,β, of 0.88 ± 0.01 per carbon atom was determined for these alkanethiol bilayer junctions. Significantly, for bilayer junc tions incorporating CD layers, the tunnelling current depends markedly on the nature of the CD guest. Junctions where nonconjugated guests, such as 1-adamantylamine, were included in the CD showed an order of magnitude lower current than junctions incorporating the conjugated guest C60. Moreover, monolayer junctions of CD backfilled with 1-nonanethiol exhibited potential-dependent currents in the presence of
CD guest molecule [Co(biptpy)2]2+ but not for [Co(tpy)2]2+, which is structurally analogous but cannot associate with CD. The effect of electrode displacement on these potential dependent currents indicated a redox cycling or electron hopping mechanism of electron transport.
Fibrinogen has been adsorbed at planar and 820 nm nano-cavity gold surfaces. AC voltammetry showed that the capacitance values of electrodes exposed to fibrinogen solutions overnight were lower, by 30 ±5 μF.cm−2, than those seen at bare gold electrodes. AFM of the protein at the planar surfaces showed a fibrous network of adsorbed protein. Oregon Green labelled fibrinogen layers were imaged using fluorescence microscopy at both the planar and nano-cavity surfaces. The effect of electrode potential on the fibrinogen layer was investigated. It was found that the protein desorbed at a potential of -1.2 V. The rate of
this desorption process was investigated by capacitance studies, which showed a two stage desorption process from the planar surface, where k1 = 0.400 ± 0.065 s−1 and k2 = 0.011 ± 0.001 s−1. The desorbed protein was collected in solution and UV-visible spectroscopy studies showed
that 6.3 x 10−13 mol.cm−2 of protein is desorbed. SDS-PAGE gel electrophoresis studies showed that the desorbed protein was fragmented by the adsorption-desorption process. Selective modification of the nano-cavity arrays resulted in localisation of the protein predominately inside
the nano-cavities. The desorption of the dye labelled protein was investigated using fluorescence microscopy at both the planar and nano-cavity surfaces. The diffusion of the protein out of the confocal laser volume was seen to be slower at the nano-cavity surfaces, compared to the planar surface, indicating that the exit of the protein from the cavities is a rate limiting step. An increase in the fluorescence signal was observed at the nano-cavity surface and an enhancement factor of 500 is estimated
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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