Results 31 to 40 of about 44,315 (310)

Unintentional aortic puncture during lumboperitoneal shunt placement

open access: yesInterdisciplinary Neurosurgery, 2021
Unintentional aortic puncture has not been reported during lumboperitoneal (LP) shunt placement. A patient with normal pressure hydrocephalus (NPH) had arrest of cerebrospinal fluid (CSF) flow after each of 3 punctures for LP shunt placement.
Alexander E. Shearin, Nazih A. Moufarrij
doaj   +1 more source

A Q‐Learning Algorithm to Solve the Two‐Player Zero‐Sum Game Problem for Nonlinear Systems

open access: yesInternational Journal of Adaptive Control and Signal Processing, Volume 39, Issue 3, Page 566-581, March 2025.
A Q‐learning algorithm to solve the two‐player zero‐sum game problem for nonlinear systems. ABSTRACT This paper deals with the two‐player zero‐sum game problem, which is a bounded L2$$ {L}_2 $$‐gain robust control problem. Finding an analytical solution to the complex Hamilton‐Jacobi‐Issacs (HJI) equation is a challenging task.
Afreen Islam   +2 more
wiley   +1 more source

Marcinkiewicz integrals with variable kernels on Hardy and weak Hardy spaces

open access: yesJournal of Function Spaces and Applications, 2010
In this article, we consider the Marcinkiewicz integrals with variable kernels defined by μΩ(f)(x)=(∫0∞|∫|x−y|≤tΩ(x,x−y)|x−y|n−1f(y)dy|2dtt3)1/2, where Ω(x,z)∈L∞(ℝn)×Lq(Sn−1) for q > 1.
Xiangxing Tao, Xiao Yu, Songyan Zhang
doaj   +1 more source

Some estimates for commutators of Littlewood-Paley g-functions

open access: yesOpen Mathematics, 2021
The aim of this paper is to establish the boundedness of commutator [b,g˙r]\left[b,{\dot{g}}_{r}] generated by Littlewood-Paley gg-functions g˙r{\dot{g}}_{r} and b∈RBMO(μ)b\in {\rm{RBMO}}\left(\mu ) on non-homogeneous metric measure space.
Lu Guanghui
doaj   +1 more source

On Interpolation in L p Spaces

open access: yesMathematical Notes, 2003
then X is an interpolation space between the spaces Lp and Lq . This means that any bounded linear operator T in Lp and Lq is also bounded in the space X . This theorem was proved by Boyd [1] in 1967 under the additional assumption that X possesses the Fatou property (see also [2] and [3, Theorem 5.16]).
Astashin, S. V., Maligranda, Lech
openaire   +4 more sources

Investigating the Effects of Build Height on Mechanical Behavior of Large‐Scale Laser Wire Directed Energy Deposited Nickel Titanium Alloy

open access: yesAdvanced Engineering Materials, EarlyView.
Laser wire directed energy deposition process was leveraged to fabricate large scale NiTi alloy wall. Evaluation of build‐height‐dependent tribo‐mechanical properties revealed significant differences in location specific sample characteristics. The middle region achieved optimal performance (superior wear resistance, balanced strength‐ductility ...
Hyunsuk Choi   +5 more
wiley   +1 more source

On the surjectivity of linear transformations

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1996
Let B be a reflexive Banach space, X a locally convex space and T:B→X (not necessarily bounded) linear transformation. A necessary and sufficient condition is obtained so that for a given v∈X there is a solution for the equation Tu=v. This result is used
M. Damlakhi, V. Anandam
doaj   +1 more source

Approximation of solutions to integro-differential time fractional wave equations in $ L^{p}- $space

open access: yesNetworks and Heterogeneous Media, 2023
In this paper, we investigate the abstract integro-differential time-fractional wave equation with a small positive parameter $ \varepsilon $. The $ L^{p}-L^{q} $ estimates for the resolvent operator family are obtained using the Laplace transform, the ...
Yongqiang Zhao, Yanbin Tang
doaj   +1 more source

Exploring Dipolar Dynamics and Ionic Transport in Metal‐Organic Frameworks: Experimental and Theoretical Insights

open access: yesAdvanced Functional Materials, EarlyView.
In this study, the interplay of dipolar dynamics and ionic charge transport in MOF compounds is investigated. Synthesizing the novel structure CFA‐25 with integrated freely rotating dipolar groups, local and macroscopic effects, including interactions with Cs cations are explored.
Ralph Freund   +6 more
wiley   +1 more source

Approximation of the image of the Lp ball under Hilbert-Schmidt integral operator

open access: yesDemonstratio Mathematica, 2023
In this article, an approximation of the image of the closed ball of the space Lp{L}_{p} (p>1p\gt 1) centered at the origin with radius rr under Hilbert-Schmidt integral operator F(⋅):Lp→LqF\left(\cdot ):{L}_{p}\to {L}_{q}, 1p+1q=1\frac{1}{p}+\frac{1}{q}=
Huseyin Nesir
doaj   +1 more source

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