1,721,018 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
Enhancement of Functional Properties in Complex Oxides via Spatial-Inversion Symmetry Control
No full textSpatial inversion symmetry is defined as a single point in a crystal symmetry where, upon placing a mirror, its reflection will look the same as the original.
The control of the inversion symmetry breaking is of great importance for enhancing the functional properties in oxide materials due to the fundamental scientific development and promising device applications. In the case of complex oxides, manipulating the inversion symmetry can lead to enhancement of the ionic displacement (spontaneous electric-polarization) upon the structural phase transition, resulting in an enhancement in the functional properties, like piezoelectricity, ferroelectricity, flexoelectricity, and multi-ferroelectricity. In this thesis, using various complex oxide materials using different experimental approached such as anion doping, stress at the grain boundary of two different materials, interfacial strain to enhance functional properties in the complex oxides with controlled spatial inversion symmetry.
We controlled the spatial inversion symmetry in the perovskite Pb(Zr, Ti)O3 via quantitively sulfur substitution at the apical oxygen site. By substituting the sulfur at the apical oxygen site, a structural phase transition from the monoclinic Pb(Zr, Ti)O3 to tetragonal Pb(Zr, Ti)O3-xSx is noticed in the reciprocal space mapping (RSM), resulting in an enhancement in ferroelectricity. The origin of the enhanced ferroelectric polarization is explained via Raman spectroscopy. The sulfur (S) makes a strong covalent bond with the titanium (Ti) element (Ti 3d-S 3p) compared with the Ti 3d-O 2p bonding due to the lower electronegativity of the sulfur element than the oxygen atom. The strong covalency of the Ti-S (apical) bonding lifted the spatial inversion symmetry uniformly in PZT oxysulfide.
In this study, by adding the ferroelectric Bi1/2(Na0.78,K0.22)1/2TiO3 (BNKT) particles (volume percent fraction) to the relaxor 0.72Bi1/2Na1/2TiO3-0.28SrTiO3 (BNT-28ST), the spatial inversion symmetry in perovskite BNT-28ST is uniformly lifted resulting in a high piezoelectric response at a low applied field in the BNT-28ST/BNKT ceramic composite. At a given applied electric field in BNT-28ST/BNKT composite, the BNKT ferroelectric particles compressively stressed the BNT-28ST relaxor ceramic and lifted the spatial inversion symmetry. Consequently, a structural transition from the pseudocubic BNT-28ST to tetragonal is identified with the spatial inversion symmetry controlled, leading to the high piezoelectric response under the low applied electric field in the BNT-based ceramic composite.
In the Al-doped SrMnO3, we aimed to produce the ferroelectric polarization in 6H-hexagonal SrMnO3 ceramics with controlled spatial inversion symmetry. The origin of the ferroelectric/polar-ordering in the hexagonal oxides (like YMnO3) is strongly connected to the buckling/tilting of a trigonal MnO5 bipyramid rather than the off-centering displacement in perovskites. Herein, we constructed the hexagonal SrAl2O4 grains locally in the proximity to the 4H-hexagonal SrMnO3 grains by doping the Aluminum (Al) to the SrMnO3 ceramic. Using the interfacial strain mechanism, a 6H-hexagonal polymorph is realized in the SrMnO3 polymorph identified in the x-ray diffraction analysis and Raman spectroscopy results. We plan to generate the ferroelectric ordering by octahedral tilting in a 6H-hexagonal SrMnO3 oxide. Then, the inversion symmetry in 6H-hexagonal SrMnO3 is expected to be broken and generate a new polar symmetry.
A free-standing epitaxial SrRuO3 (SRO) membrane with nanoscale thickness is synthesized. The heteroepitaxial sacrificial layer of SrCuO2 (SCO) followed by an encapsulated SRO film is grown on the SrTiO3 (001) substrate via pulsed-laser deposition (PLD) technique. A free-standing SRO epitaxial-membrane is attained by chemical etching of the sacrificial SCO layer in the acidic potassium chloride (KCl) solution. The structural, chemical, surface, and electrical characterization of the SrRuO3 epitaxial membrane were demonstrated via x-ray diffraction (XRD), scanning electron microscopy (SEM) measurements, Atomic force microscopy (AFM), and the four-prob method.
A better understanding of the enhanced functional properties in complex oxides can play a promising role in device applications like non-volatile memories, actuators, and flexible electronics.Docto
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
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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