Results 61 to 70 of about 36,464 (226)

Principal eigenvalues for indefinite-weight elliptic problems in 𝑅ⁿ [PDF]

Proceedings of the American Mathematical Society, 1992
We consider the problem − Δ u = λ g u - \Delta u = \lambda gu in R n {R^n} , u → 0 u \to 0 at ∞ \infty with g g a function that changes sign.
openaire   +1 more source

Ultrasound‐Guided Liposomal vs. Conventional Bupivacaine Erector Spinae Plane Block Plus Gabapentin for Postherpetic Neuralgia

The Kaohsiung Journal of Medical Sciences, EarlyView.
ABSTRACT This study aimed to compare efficacy and safety of ultrasound‐guided erector spinae plane block (ESPB) using liposomal (LB) versus conventional bupivacaine (CB), each plus standardized gabapentin, in patients with postherpetic neuralgia (PHN). A total of 116 PHN patients were randomized to ESPB‐LB or ESPB‐CB; both groups received standardized ...
Xia‐Jing Xu, Li‐Juan Liu, Fa‐Ming Xu, Xiang‐Yu Fang   +3 more
wiley   +1 more source

Existence and multiplicity of solutions to strongly indefinite Hamiltonian system involving critical Hardy-Sobolev exponents

Electronic Journal of Differential Equations, 2013
In this article, we study the existence and multiplicity of nontrivial solutions for a class of Hamiltoniam systems with weights and nonlinearity involving the Hardy-Sobolev exponents.
Francisco Odair De Paiva, Rodrigo da Silva Rodrigues   +1 more
doaj  

Extended Conformal Symmetry [PDF]

, 2000
We show that the grading of fields by conformal weight, when built into the initial group symmetry, provides a discrete, non-central conformal extension of any group containing dilatations.
Wheeler, James T.
core   +2 more sources

Photonic Systolic Array for All‐Optical Matrix–Matrix Multiplication

Laser &Photonics Reviews, EarlyView.
A photonic systolic array is introduced, offering extreme parallelism in matrix‐matrix multiplication based on the synchronized movement of optical pulses along a crossbar array. Optical pulses traveling in perpendicular directions meet at freeform‐designed multiply‐accumulate units, each tailored to generate two signals whose intensity difference ...
Jungmin Kim, Qingyi Zhou, Zongfu Yu
wiley   +1 more source

Finite‐Time Disturbance Observer‐Based Nonlinear Robust Adaptive Control of Hydraulic Manipulator With Parameter Identification

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Hydraulic manipulators exhibit strong coupling, pronounced nonlinearities, and significant modeling uncertainties, which hinder high‐precision motion control. This paper proposes a finite‐time disturbance observer–based nonlinear robust adaptive control (RAC‐FTDO) framework enhanced by a physically consistent dynamic parameter identification ...
Tianyu Gao, Xianglong Liang, Wenxiang Deng, Jianyong Yao   +3 more
wiley   +1 more source

On the eigenvalue problem for the Hardy-Sobolev operator with indefinite weights

Electronic Journal of Differential Equations, 2002
In this paper we study the eigenvalue problem $$ -Delta_{p}u-a(x)|u|^{p-2}u=lambda |u|^{p-2}u, quad uin W^{1,p}_{0}(Omega), $$ where ...
Konijeti Sreenadh
doaj  

Reduced‐Frequency GLP1 Therapy Maintains Weight, Body Composition, and Metabolic Syndrome Improvements: A Case Series

Obesity, EarlyView.
ABSTRACT Objective This study aimed to evaluate whether reduced‐frequency dosing of GLP1 receptor agonists maintains weight loss, body composition, and metabolic syndrome improvements following successful initial treatment with standard weekly therapy. Methods This retrospective case series included 30 adults who achieved weight plateau while on weekly
Michelle Wong, Ash Wu, Pawanjot K. Garhe, Mitch Biermann   +3 more
wiley   +1 more source

Hyperbolic Kac-Moody Algebras and Chaos in Kaluza-Klein Models

, 2001
Some time ago, it was found that the never-ending oscillatory chaotic behaviour discovered by Belinsky, Khalatnikov and Lifshitz (BKL) for the generic solution of the vacuum Einstein equations in the vicinity of a spacelike ("cosmological") singularity ...
Andersson, Belinskii, Belinskii, Belinskii, Belinskii, Belinskii, Berger, Bergshoeff, Bernard Julia, Chamseddine, Chamseddine, Chapline, Cremmer, Cremmer, Damour, Damour, Damour, Demaret, Demaret, Demaret, Elskens, Feingold, Hermann Nicolai, Ivashchuk, Julia, Kac, Kirillov, Lifshitz, Marc Henneaux, Misner, Misner, Mizoguchi, Moody, Nicolai, Piatetsky-Shapiro, Rendall, Ryan, Saçlioğlu, Schröder, Thibault Damour, Vinberg   +40 more
core   +3 more sources

Characteristics, properties and limitations of per‐ or polyfluoroalkyl substances (PFASs) and fluoropolymers

Polymer International, EarlyView.
An overview and categorization of man‐made per‐ or polyfluoroalkyl substances (PFASs) including low‐molar‐mass and high‐molar‐mass fluorochemicals, and their international regulations is presented. Though certain PFASs are toxic, bioaccumulative and cross the human cellular membranes, others, such as fluoropolymers, are safe, reliable and involved in ...
Bruno Améduri
wiley   +1 more source