Results 11 to 20 of about 9,149 (227)
Dispersion measures and dispersive orderings [PDF]
Statistics & Probability Letters, 2003 In this paper, the comparison of random variables according to the functionals of a general class of dispersion measures is characterized in terms of the dilation order. The Gini's mean difference is a particular member of this general class. In addition, a new and weaker order, called the second-order absolute Lorenz ordering, is introduced, and we ...
Ramos, Héctor M. +1 more
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Shock Waves in Dispersive Hydrodynamics with Nonconvex Dispersion [PDF]
SIAM Journal on Applied Mathematics, 2017 Dissipationless hydrodynamics regularized by dispersion describe a number of physical media including water waves, nonlinear optics, and Bose-Einstein condensates. As in the classical theory of hyperbolic equations where a non-convex flux leads to non-classical solution structures, a non-convex linear dispersion relation provides an intriguing ...
Patrick Sprenger, Mark A. Hoefer
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Dispersive stabilization [PDF]
Bulletin of the London Mathematical Society, 2010 Ill posed linear and nonlinear initial value problems may be stabilized, that it converted to to well posed initial value problems, by the addition of purely nonscalar linear dispersive terms. This is a stability analog of the Turing instability. This idea applies to systems of quasilinear Schrödinger equations from nonlinear optics.
Métivier, Guy, Rauch, Jeffrey
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Theory of Computing Systems, 2011 A preliminary version entitled "Dispersion in unit disks" appeared in Proceedings of the 27th International Symposium on Theoretical Aspects of Computer Science (STACS'10), pages 299 ...
Adrian Dumitrescu, Minghui Jiang 0001
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SSRN Electronic Journal, 2017 Estimation error has plagued quantitative finance since Harry Markowitz launched modern portfolio theory in 1952. Using random matrix theory, we characterize a source of bias in the sample eigenvectors of financial covariance matrices. Unchecked, the bias distorts weights of minimum variance portfolios and leads to risk forecasts that are severely ...
Lisa R. Goldberg +2 more
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Archives of Metallurgy and Materials, 2015 After preparing aqueous suspensions from magnetite particles with a poly-acrylic acid, we investigated the effects of several experimental parameters. We characterized the stability of the suspensions using visual inspection, sedimentation, adsorption ...
Lee E.-H. +3 more
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Preparation, characterization and foaming performance of thermally expandable microspheres
Materials Research Express, 2020 Thermal expansion microcapsules (TEMs) are widely used in various fields due to their unique structures. In recent years, TEMs have attracted much attention and have broad market application prospects.
Furong Li +7 more
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Dispersant Molecules with Functional Catechol Groups for Supercapacitor Fabrication
Molecules, 2021 Cathodes for supercapacitors with enhanced capacitive performance are prepared using MnO2 as a charge storage material and carbon nanotubes (CNT) as conductive additives.
Kaelan Rorabeck, Igor Zhitomirsky
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Stude of water-oil emulsion using wave treatment dispersant
Известия высших учебных заведений: Проблемы энергетики, 2021 THE PURPOSE. To develop an apparatus for wave treatment of water-fuel oil and preparation of water-fuel emulsion for combustion. To present a scheme of an innovative vortex burner device for water-oil emulsion combustion. To review existing equipment for
A. A. Baubek +4 more
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Applied Water Science, 2022 The application of chemical dispersants aims to stimulate microbial oil degradation by increasing the bioavailability of oil compounds. Overall, nine microcosms were prepared (three for each treatment) using treated sediment with (i) dispersant (d: 25 ...
Soumaya Elarbaoui +3 more
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