1,355,096 research outputs found
Data for: An accurate ab initio electronic structure calculation for interstellar argonium
No full textThe resulting \emph{ab initio} point-wise functions are represented in a table format in the electronic supplemented material together with the molecular constants evaluated for all bound vibrational levels of the ArH isotopologue
Eremocharis ancestralis Stolyarov 1972
No full text<i>Eremocharis ancestralis</i> Stolyarov, 1972 <p>(Figs. 205–206)</p> <p> <b>Material examined.</b> AFGHANISTAN: Khazaradzhat, Sochan pass, 3500 m, 2.8.1968, 1♂ (Holotype), 1♀ (Paratype) (leg. Stolyarov) (ZIN).</p> <p> <b>Remarks.</b> This distinct species is very small like <i>E. granulosa rufipes</i> Uvarov. But it is a member of <i>E. afghana</i> species group by the length of tegmina and the hind leg coloration.</p>Published as part of <i>Ünal, Mustafa, 2016, Pamphagidae (Orthoptera: Acridoidea) from the Palaearctic Region: taxonomy, classification, keys to genera and a review of the tribe Nocarodeini I. Bolívar, pp. 1-223 in Zootaxa 4206 (1)</i> on page 42, DOI: 10.11646/zootaxa.4206.1.1, <a href="http://zenodo.org/record/208260">http://zenodo.org/record/208260</a>
Bragg waveguides with low-index liquid cores
No full textLink to a related website: https://digital.library.adelaide.edu.au/dspace/bitstream/2440/68915/1/hdl_68915.pdf, Open Access via UnpaywallThe spectral properties of light confined to low-index media by binary layered structures is discussed. A novel phase-based model with a simple analytical form is derived for the approximation of the center of arbitrary bandgaps of binary layered structures operating at arbitrary effective indices. An analytical approximation to the sensitivity of the bandgap center to changes in the core refractive index is thus derived. Experimentally, significant shifting of the fundamental bandgap of a hollow-core Bragg fiber with a large cladding layer refractive index contrast is demonstrated by filling the core with liquids of various refractive indices. Confirmation of these results against theory is shown, including the new analytical model, highlighting the importance of considering material dispersion. The work demonstrates the broad and sensitive tunability of Bragg structures and includes discussions on refractive index sensingKristopher J. Rowland, Shahraam Afshar V., Alexander Stolyarov, Yoel Fink, and Tanya M. Monr
Mixodusa Stolyarov
No full textKey to species of Mixodusa Stolyarov 1 Male cerci with long inner tooth, much longer than apical conical part (Ünal 2012: Fig. 14). Female 7th sternite separated from subgenital plate, with an acute and high projection in the middle (Ünal, 2012: Fig. 16)........... M. siazovi (Uvarov, 1929) - Male cerci with short inner tooth, shorter than apical conical part (Ünal 2012: Fig. 14). Female 7th sternite fused with subgenital plate, without or with a very low carina (Figs. 206, 212, 317)................................................ 2 2 Pronotum with strongly and narrowly rounded posterior margin (Figs. 208, 211). Male last tergite with long, triangular lobes pointed at apex; its posterior incision deep and triangular (Figs. 209). Female 7th sternite with a low longitudinal carina in the middle (Fig. 212).............................................................. M. bocquilloni (Uvarov, 1917) - Pronotum with broably rounded posterior margin, more truncate (Figs. 200, 205). Male last tergite with short and rounded lobes; its posterior incision shallower and more rounded (Figs. 201). Female 7th sternite with smooth surface without carina in the middle (Figs. 206, 317)........................................................... M. retusa Ünal, sp. nov.Published as part of Ünal, Mustafa, 2018, Tettigoniinae (Orthoptera: Tettigoniidae) from Turkey with key to genera and descriptions of six new species, pp. 1-66 in Zootaxa 4432 (1) on page 17, DOI: 10.11646/zootaxa.4432.1.1, http://zenodo.org/record/145594
Force constant disorder in the Ni44Nb56bulk metallic glass as observed by deep inelastic neutron scattering augmented by isotopic substitution
No full textIn this work, the force-constant disorder in nickel-niobium metallic glass, Ni44Nb56, was studied using the deep inelastic neutron scattering (DINS) technique augmented by isotopic substitution. The distributions of DINS observables (the nuclear kinetic energies, the width of the nuclear momentum distributions, and the effective force constants) were measured in Ni44Nb56 and compared with their counterparts obtained from ab initio harmonic lattice (HLD) simulations for the crystalline forms of nickel, niobium, and the NiNb crystal and from the reverse Monte Carlo (RMC) simulations augmented by effective force fields performed for Ni44Nb56. The force-constant distribution of nickel, obtained from the analysis of the results of the DINS experiments, was found to be two times broader than its counterparts estimated based on the HLD and RMC simulations. In the case of niobium, the force-constant distribution inferred from the DINS experiments is estimated to be an order of magnitude broader than the ab initio HLD prediction in the NiNb crystal. Moreover, no disorder-induced softening (with respect to its crystalline counterparts) of the effective force constants of Ni and Nb in Ni44Nb56 was observed. The lack of disorder-induced softening in Ni44Nb56 is consistent with the correlation between the short-range order, defined by the average coordination number and the interatomic distances, and the magnitudes of the effective force constants. The obtained results are consistent with a picture, whereby disorder induces symmetrical broadening of phonon dispersion curves, and phonon softening is limited to low-energy modes carrying negligible amounts of nuclear kinetic energy. The obtained results have important ramifications for engineering the properties of bulk metallic glasses
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe 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
No full text“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
No full textWe 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
APPROXIMATE SUM RULE FOR DIATOMIC VIBRONIC STATES AS A TOOL FOR THE EVALUATION OF MOLECULAR PROPERTIES
No full text1. A.V. Stolyarov and V.I. Pupyshev, Phys. Rev. A 49, 1693 (1994) 2. E.A.Pazyuk, A.V.Stolyarov, and V.I. Pupyshev, Chem. Phys. Lett. 228, 219 (1994)Author Institution: Moscow State University, Moscow, Russia 119899The simple expression is offered to approximate sums of the form where f and g are some operators which couple the vibrational levels and of two interacting electronic states and is the difference of the corresponding internuclear . The rigorous quantum proofs as well as semiclassical justification of this formula are presented. The approximate sum rule is numerically tested for radiative lifetimes, electronic polarizabilities, fine-structure constants and Lande factors for the vibronic states of the NaK and its absolute accuracy is estimated in a closed functional forms:- . The approximation is demonstrated to have high accuracy and efficiency for non-diagonal systems, especially for those with significant continuum contributions
Electroplastic effect in specimens of duplex stainless steel under tension
No full textDuplex stainless steels (DSSs) possess a typical biphasic microstructure consisting of equal amount of ferrite and austenite, which provides better combination of the mechanical and corrosion properties compared to the austenitic grade. Despite their good processability, they suffer from embrittlement of secondary phases in a very specific temperature range 450 – 1000°C depending on the composition. Solubilizing treatment after processing is required to obtain a perfect balance between austenite and ferrite and moreover, to dissolve any secondary phases that could have been formed during processing. This implies very high energy consumption of forming processes due to a high temperature (above 1000°C) or high power needed for the forming machines. The electroplastic effect could be used to reduce the force needed to form the material and extend the forming limits. The effect consists in direct interaction between the electrons of the electrical current and the ions of the material. The current mode (e.g., continuous current, pulsed current, pulse duration and duty cycle) plays an important role in the occurrence and the extent of the electroplastic effect. The electroplastic effect is investigated under tension in two-phase duplex stainless steel UNS S32205. Tensile tests under different current conditions (current density and frequency) are compared to room temperature tests. The best effect in terms of reduction of the ultimate tensile strength and increase in the fracture strain is achieved by introducing a multi-pulse current with the maximum density and pulse duration
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