1,722,120 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
The currents <strong>j</strong>
No full text<p><strong>Figure 4.</strong> The currents <strong>j</strong><sub><em>s</em></sub>, <strong>j</strong><sub><em>o</em></sub> and <strong>j</strong> = <strong>j</strong><sub><em>s</em></sub> + <strong>j</strong><sub><em>o</em></sub>, for the ground state of a trapped particle with Weyl coupling, with j=\frac{1}{2}, m=\frac{1}{2} and <em>v</em> = 10. For clarity, we have scaled the currents <strong>j</strong><sub><em>i</em></sub> by {\rm e}^{r^{2}} to account for the Gaussian damping of the wavefunction, and measured distance in units of 1/<em>v</em>, the spin–orbit length. In all figures the plane defined by <em>y</em> = 0 is plotted. The arrows represent flows of the local normalized current vector. The colour density represents the out-of-plane component of the spin textures, with lightest colour representing the maximal out-of-plane current, and the darkest representing maximal in-plane current. All three currents are azimuthally symmetric. (a) The spin currents, <strong>j</strong><sub><em>s</em></sub>, have oscillations on the length scale <em>r</em> ~ 2π/<em>v</em>. On the axis with <em>z</em> = 0, the local spin vector is polarized entirely out-of-plane at solutions to tan <em>rv</em> = −<em>rv</em>/<em>v</em><sup>2</sup>. For large <em>v</em>, the solutions are given approximately by <em>rv</em> = <em>n</em>π, where <em>n</em> is an integer. The odd solutions feature in-plane vortex loops of spin, while the spin forms anti-vortices at the even solutions. (b) The orbital currents, <strong>j</strong><sub><em>o</em></sub>, are dominated by the in-plane component, which is stronger than the out-of-plane components by a factor of <em>v</em>. A small out-of-plane component is largest on the <em>z</em> = 0 axis. In the upper half plane with <em>y</em> > 0, current converges on the point <em>r</em> = 0, while on the lower half plane all the current diverges away from the point <em>r</em> = 0. (c) The total current, <strong>j</strong>, is the sum of orbital and spin currents. The contributions from spin and orbital degrees of freedom are conserved independently.</p> <p><strong>Abstract</strong></p> <p>We investigate the properties of an atom under the influence of a synthetic three-dimensional spin–orbit coupling (Weyl coupling) in the presence of a harmonic trap. The conservation of total angular momentum provides a numerically efficient scheme for finding the spectrum and eigenfunctions of the system. We show that at large spin–orbit coupling the system undergoes dimensional reduction from three to one dimension at low energies, and the spectrum is approximately Landau level-like. At high energies, the spectrum is approximately given by the three-dimensional isotropic harmonic oscillator. We explore the properties of the ground state in both position and momentum space. We find the ground state has spin textures with oscillations set by the spin–orbit length scale.</p
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
Strong, J H, NX15892
No full textThis record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete. Visit this record in UMA's new catalogue at: https://archives.library.unimelb.edu.au/nodes/view/419772Surname: STRONG. Given Name(s) or Initials: J H. Military Service Number or Last Known Location: NX15892. Missing, Wounded and Prisoner of War Enquiry Card Index Number: 41578.244351
Item: [2016.0049.52033] "Strong, J H, NX15892
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
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