Existence of positive solutions for a critical fractional Kirchhoff equation with potential vanishing at infinity
Sign Up to like & getrecommendations! Published in 2021 at "Mathematische Nachrichten"
DOI: 10.1002/mana.201900273
Abstract: In this paper, we consider the following fractional Kirchhoff equation with critical nonlinearity a+b∫R3(−Δ)s2u2dx(−Δ)su+V(x)u=Q(x)f(u)+|u|2s∗−2u,x∈R3,where a,b>0 , (−Δ)s is the fractional Laplace operator with s∈(34,1) , V vanishes at infinity and 2s∗=63−2s . Under appropriate assumptions… read more here.
Keywords: kirchhoff equation; existence positive; fractional kirchhoff; infinity ... See more keywords
Asymptotic structure of the Rarita-Schwinger theory in four spacetime dimensions at spatial infinity
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DOI: 10.1007/jhep02(2021)031
Abstract: Abstract We investigate the asymptotic structure of the free Rarita-Schwinger theory in four spacetime dimensions at spatial infinity in the Hamiltonian formalism. We impose boundary conditions for the spin-3/2 field that are invariant under an… read more here.
Keywords: rarita schwinger; structure; theory; infinity ... See more keywords
Emergent time, cosmological constant and boundary dimension at infinity in combinatorial quantum gravity
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DOI: 10.1007/jhep04(2022)019
Abstract: Abstract Combinatorial quantum gravity is governed by a discrete Einstein-Hilbert action formulated on an ensemble of random graphs. There is strong evidence for a second-order quantum phase transition separating a random phase at strong coupling… read more here.
Keywords: time; infinity; curvature; dimension ... See more keywords
A novel notion of null infinity for c-boundaries and generalized black holes
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DOI: 10.1007/jhep09(2018)123
Abstract: A bstractWe give new definitions of null infinity and black hole in terms of causal boundaries, applicable to any strongly causal spacetime (M, g). These are meant to extend the standard ones given in terms… read more here.
Keywords: notion null; null infinity; novel notion; black hole ... See more keywords
Implications of a Non-zero Poynting Flux at Infinity Sans Radiation Reaction for a Uniformly Accelerated Charge
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DOI: 10.1007/s10701-021-00486-1
Abstract: We study in detail the electromagnetic fields and the Poynting flux in the case of a uniformly accelerated charge, in order to examine whether such a charge does `emit' radiation, especially in view of the… read more here.
Keywords: poynting flux; energy; charge; accelerated charge ... See more keywords
Nonlinear H-infinity control for underactuated systems: the Furuta pendulum example
Sign Up to like & getrecommendations! Published in 2018 at "International Journal of Dynamics and Control"
DOI: 10.1007/s40435-017-0348-0
Abstract: The article applies nonlinear optimal (H-infinity) control to underactuated robotic systems using as a case study Furuta’s pendulum. The pendulum’s dynamic model is first transformed to an equivalent form after applying partial feedback linearization. The… read more here.
Keywords: control; nonlinear infinity; infinity control; furuta pendulum ... See more keywords
Optimal adaptive guaranteed-cost H-infinity model reference controller design for nonlinear systems
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DOI: 10.1007/s40435-021-00846-9
Abstract: This paper proposes a novel robust adaptive controller for uncertain nonlinear systems subject to external disturbances. The robust part of the controller is designed by coupling the H-infinity and guaranteed-cost control theories. Besides, the adaptive… read more here.
Keywords: control; model reference; controller; guaranteed cost ... See more keywords
The gradient flow of infinity-harmonic potentials
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DOI: 10.1016/j.aim.2020.107526
Abstract: We study the streamlines of $\infty$-harmonic functions in planar convex rings. We include convex polygons. The points where streamlines can meet are characterized: they lie on certain curves. The gradient has constant norm along streamlines… read more here.
Keywords: infinity; flow infinity; gradient flow; harmonic potentials ... See more keywords
[P234] Waiting and treatment time analysis for radiation therapy treatments
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DOI: 10.1016/j.ejmp.2018.06.520
Abstract: Purpose To analyze the total treatment time and waiting time for the patients in our radiation oncology department. Method Patient treatment and waiting times were analyzed for a total of 3937 appointments during the last… read more here.
Keywords: treatment; time; treatment time; total time ... See more keywords
Uniqueness for a class of p-Laplacian problems when the reaction term tends to zero at infinity
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Mathematical Analysis and Applications"
DOI: 10.1016/j.jmaa.2020.124576
Abstract: Abstract We discuss uniqueness of positive radial solutions for a class of singular p-Laplacian problem on the exterior of a ball where the reaction term has infinite semipositone structure and decays to 0 at infinity.… read more here.
Keywords: class laplacian; infinity; class; reaction term ... See more keywords
Real time implementation of H-infinity and RST motion control of rotary traveling wave ultrasonic motor
Sign Up to like & getrecommendations! Published in 2017 at "Mechatronics"
DOI: 10.1016/j.mechatronics.2017.04.003
Abstract: ABSTRACT This paper deals with design, performances comparison and experimental validation of H-infinity (H∞) and discrete time RST position controllers for a Traveling Wave Ultrasonic Motor (TWUM) which is dedicated to robotic applications. The proposed… read more here.
Keywords: wave ultrasonic; time; motor; infinity ... See more keywords