Results 121 to 130 of about 128,734 (275)
Bohr phenomena for Laplace-Beltrami operators
Indagationes Mathematicae, 2006 The classical theorem of \textit{H. Bohr} [Proc. Lond. Math. Soc. 13, 1--5 (1914; JFM 44.0289.01)] involved power series \(\sum_m a_mz^m\) mapping the unit disc \(\mathbb D\) into itself, and stated that there exists a radius \(R\) such that \(\sum_m| a_mz^m|
openaire +5 more sources
Contributions to Plasma Physics, EarlyView.ABSTRACT Ab initio path integral Monte Carlo (PIMC) simulations constitute the gold standard for the estimation of a broad range of equilibrium properties of a host of interacting quantum many‐body systems spanning a broad range of conditions from ultracold atoms to warm dense quantum plasmas.
Paul Hamann +2 more
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Acoustic‐driven surface cleaning with millimeter‐sized bubbles at translational resonance
Droplet, EarlyView.Time‐lapse visualization comparing bubble trajectories. The top panel (0 Hz) shows a bubble's linear path under no acoustic forcing, while the bottom panel (50 Hz) demonstrates the oscillatory motion induced by acoustic waves at a resonance mode. This mechanism holds promising potential for applications such as surface cleaning.
Yan Jun Lin +2 more
wiley +1 more source
Creep properties and constitutive model of diabase in deep water conveyance tunnels
Deep Underground Science and Engineering, EarlyView.The axial and lateral creep characteristics of diabase were analyzed based on compression creep tests. The nonlinear viscoelastic‐plastic model capable of describing the whole creep process was established based on the fractional derivative and damage theories.
Zhigang Tao +5 more
wiley +1 more source
ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.A bamboo fiber aggregation‐based broom‐like evaporator with open interstitial spaces for water transport and vapor diffusion was designed that provided extensive air–liquid interfaces for facilitating fast vapor diffusion and avoiding the formation of high‐humidity zones.
Rilong Yang +5 more
wiley +1 more source
Singular integrals of the compositions of Laplace-Beltrami and Green's operators
Journal of Inequalities and Applications, 2011 We establish the Poincaré-type inequalities for the composition of the Laplace-Beltrami operator and the Green's operator applied to the solutions of the non-homogeneous A-harmonic equation in the John domain.
Ding Shusen, Fang Ru
doaj
Energy Science &Engineering, EarlyView.A numerical model of variable‐speed pumped storage unit (VSPSU) with full‐size converter (FSC) under fast speed control strategy is established. Additionally, the correctness of the model was validated by comparing with SIMSEN simulation results and text prototype data from NARI.
Weijia Yang +5 more
wiley +1 more source
Ratios of Laplace transforms, Mikusi?ski operational calculus
Mathematische Annalen, 1966 Mikusinski’s theory of convolution quotients [7, 8] yields uniqueness theorems for various kinds of boundary-value problems; further, his theory justifies the standard Heaviside calculations — without the un-necessary assumptions required by Laplace transform techniques.
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Robust Control Using a Matrix Converter to Enhance Wind Turbine Systems
Energy Science &Engineering, EarlyView.This study uses a more efficient and effective solution to improve the operational performance of a wind turbine‐based power system. This system uses a doubly fed induction generator and relies on a matrix converter and fractional‐order proportional–integral controller.
Sihem Ghoudelbourk +4 more
wiley +1 more source
Energy Science &Engineering, EarlyView.This paper presents a hydrate pressure core processing device integrated with a high‐precision active control system to perform nondestructive transfer, cutting, and analysis. To address the limitations of slow dynamic response and high thermal inertia in traditional passive systems, a differentiated control scheme is implemented.
Liwen Nan +3 more
wiley +1 more source