Analysis of the L1 scheme for a time fractional parabolic–elliptic problem involving weak singularity
Sign Up to like & getrecommendations! Published in 2020 at "Mathematical Methods in the Applied Sciences"
DOI: 10.1002/mma.6850
Abstract: A time fractional initial boundary value problem of mixed parabolic–elliptic type is considered. The domain of such problem is divided into two subdomains. A reaction–diffusion parabolic problem is considered on the first domain, and on… read more here.
Keywords: time; parabolic elliptic; problem; singularity ... See more keywords
A simple holographic scenario for gapped quenches
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DOI: 10.1007/jhep02(2017)130
Abstract: A bstractWe construct gravitational backgrounds dual to a family of field theories parameterized by a relevant coupling. They combine a non-trivial scalar field profile with a naked singularity. The naked singularity is necessary to preserve… read more here.
Keywords: field; simple holographic; singularity; holographic scenario ... See more keywords
Rank defect analysis and the realization of proper singularity in normal equations of geodetic networks
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Geodesy"
DOI: 10.1007/s00190-016-0989-3
Abstract: The singularity of input normal equations (NEQ) is a crucial element for their optimal handling in the context of terrestrial reference frame (TRF) estimation under the minimal-constraint framework. However, this element is often missing in… read more here.
Keywords: rank defect; realization proper; singularity; analysis realization ... See more keywords
Three-dimensional electric potential induced by a point singularity in a multilayered dielectric medium
Sign Up to like & getrecommendations! Published in 2019 at "Applied Mathematics and Mechanics"
DOI: 10.1007/s10483-019-2519-9
Abstract: A simple and effective method is proposed to derive the three-dimensional electric potential induced by a point singularity of any type in an N-phase dielectric medium composed of N−2 intermediate dielectric layers of equal thickness… read more here.
Keywords: medium; point singularity; dimensional electric; singularity ... See more keywords
Accurate quadrature of nearly singular line integrals in two and three dimensions by singularity swapping
Sign Up to like & getrecommendations! Published in 2019 at "BIT Numerical Mathematics"
DOI: 10.1007/s10543-020-00820-5
Abstract: The numerical method of Helsing and co-workers evaluates Laplace and related layer potentials generated by a panel (composite) quadrature on a curve, efficiently and with high-order accuracy for arbitrarily close targets. Since it exploits complex… read more here.
Keywords: singular line; quadrature; singularity; quadrature nearly ... See more keywords
A singularity removal method for coupled 1D–3D flow models
Sign Up to like & getrecommendations! Published in 2019 at "Computational Geosciences"
DOI: 10.1007/s10596-019-09899-4
Abstract: In reservoir simulations, the radius of a well is inevitably going to be small compared to the horizontal length scale of the reservoir. For this reason, wells are typically modelled as lower-dimensional sources. In this… read more here.
Keywords: coupled flow; reservoir; singularity removal; method ... See more keywords
The Production of FRW Universe and Decay to Particles in Multiverse
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DOI: 10.1007/s10773-017-3437-0
Abstract: In this study, first, it will be shown that as the Hubble parameter, “H”, increases the production cross section for closed and flat Universes increases rapidly at smaller values of “H” and becomes constant for… read more here.
Keywords: production cross; section; cross section; singularity ... See more keywords
The non-cutoff Vlasov-Maxwell-Boltzmann system with weak angular singularity
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DOI: 10.1007/s11425-016-9083-x
Abstract: We establish the global existence of small-amplitude solutions near a global Maxwellian to the Cauchy problem of the Vlasov-Maxwell-Boltzmann system for non-cutoff soft potentials with weak angular singularity. This extends the work of Duan et… read more here.
Keywords: vlasov maxwell; maxwell boltzmann; angular singularity; boltzmann system ... See more keywords
Singularity robust path planning for real time base attitude adjustment of free-floating space robot
Sign Up to like & getrecommendations! Published in 2017 at "International Journal of Automation and Computing"
DOI: 10.1007/s11633-017-1055-1
Abstract: This paper presents a singularity robust path planning for space manipulator to achieve base (satellite) attitude adjustment and end-effector task. The base attitude adjustment by the movement of manipulator will save propellant compared with conventional… read more here.
Keywords: space; base attitude; space robot; singularity ... See more keywords
Doubly-Resonant Saddle-Nodes in $$\mathbb {C}^{3}$$C3 and the Fixed Singularity at Infinity in the Painlevé Equations: Formal Classification
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DOI: 10.1007/s12346-016-0214-z
Abstract: In this work we consider formal singular vector fields in $$\mathbb {C}^{3}$$C3 with an isolated and doubly-resonant singularity of saddle-node type at the origin. Such vector fields come from irregular two-dimensional systems with two opposite… read more here.
Keywords: painlev equations; singularity infinity; doubly resonant; singularity ... See more keywords
A Singularity-free Steering Law of Roof Array of Control Moment Gyros for Agile Spacecraft Maneuver
Sign Up to like & getrecommendations! Published in 2020 at "International Journal of Control, Automation and Systems"
DOI: 10.1007/s12555-019-0008-6
Abstract: In this paper, a singularity-free steering law for single gimbal control moment gyros (CMGs) is addressed for agile spacecraft. The geometrical array considered particularly in this work is a roof array due to the simplicity… read more here.
Keywords: array; control; free steering; steering law ... See more keywords