Results 81 to 90 of about 7,484 (167)

Modeling Dynamic Electrochemical Impedance Spectroscopy Using a Linearization Technique

ChemElectroChem, Volume 12, Issue 18, September 15, 2025.
This article investigates the modeling of dynamic electrochemical impedance spectroscopy. Using a linearization technique, three mathematical models are defined – dynamic, stationary, and filtered. The results show a closeness of the dynamic model to the experimental practice and significant effects of nonstationarity in the low‐frequency region.
Cécile Pot d'or, Richard Chukwu, Doriano Brogioli, Fabio La Mantia   +3 more
wiley   +1 more source

Threshold energies and poles for hadron physical problems by a model-independent universal algorithm

Physics Letters B, 2017
In this work we show how by using a Padé type analytical continuation scheme, based on the Schlessinger point method, it is possible to find higher production thresholds in hadron physical problems.
R.-A. Tripolt, I. Haritan, J. Wambach, N. Moiseyev   +3 more
doaj   +1 more source

Artificial Neural Networks Fitting of Potential Energy Curves and Surfaces: The 1/R Conundrum

Journal of Computational Chemistry, Volume 46, Issue 24, September 15, 2025.
ANN fit of electronic energies and adding internuclear repulsion gives accurate potential energy surfaces. ABSTRACT Within the Born‐Oppenheimer approximation, the potential energy of a molecular system is written as a sum of electronic energy and nuclear‐nuclear repulsion energy terms.
Siddhuram Rana, Uday Sankar Manoj, Upakarasamy Lourderaj, Narayanasami Sathyamurthy   +3 more
wiley   +1 more source

Analyticity and Stable Computation of Dirichlet–Neumann Operators for Laplace's Equation Under Quasiperiodic Boundary Conditions in Two and Three Dimensions

Studies in Applied Mathematics, Volume 154, Issue 5, May 2025.
ABSTRACT Dirichlet–Neumann operators (DNOs) are important to the formulation, analysis, and simulation of many crucial models found in engineering and the sciences. For instance, these operators permit moving‐boundary problems, such as the classical water wave problem (free‐surface ideal fluid flow under the influence of gravity and capillarity), to be
David P. Nicholls, Jon Wilkening, Xinyu Zhao   +2 more
wiley   +1 more source

Padé Approximant for Normal Stress Differences in Large-Amplitude Oscillatory Shear Flow [PDF]

, 2017
Analytical solutions for the normal stress differences in large-amplitude oscillatory shear flow (LAOS), for continuum or molecular models, normally take the form of the first few terms of a series expansion in the shear rate amplitude.
Poungthong, P., Giacomin, A. Jeffrey, Saengow, Chaimongkol, Kolitawong, Chanyut, Merger, D., Wilhelm, M.   +5 more
core  

Mixed Convection and Permeability Effects on Magnetohydrodynamic Williamson Fluid Flow Over an Inclined Stretchy Surface With Radiation Influence: Analytical Investigation

Engineering Reports, Volume 7, Issue 4, April 2025.
ABSTRACT The study introduces a computational method that combines Legendre polynomials with Gauss–Lobatto points to solve nonlinear coupled differential equations, focusing on the Williamson fluid model under the influence of mixed convection and permeability with mixed boundary conditions.
R. A. Oderinu, T. A. Oyeyinka, S. Alao, F. J. Ayanbukola, B. A. Sanusi   +4 more
wiley   +1 more source

Semiclassical quantization by Padé approximant to periodic orbit sums

, 1999
PACS. 05.45−a – Nonlinear dynamics and nonlinear dynamical systems. PACS. 03.65Sq – Semiclassical theories and applications. Abstract. – Periodic orbit quantization requires an analytic continuation of non-convergent semiclassical trace formulae.
P. A. Dando, J. Main, D. Belkić, H. S. Taylor   +3 more
core   +1 more source

Modeling the Lithium Ion/Electrode Battery Interface Using Fick’s Second Law of Diffusion, the Laplace Transform, Charge Transfer Functions, and a [4, 4] Padé Approximant

International Journal of Electrochemistry, 2015
This work investigates a one-dimensional model for the solid-state diffusion in a LiC6/LiMnO2 rechargeable cell. This cell is used in hybrid electric vehicles.
John H. Summerfield, Charles N. Curtis
doaj   +1 more source

Revisiting the Relationship Between Induced Polarization and Surface Conductivity: Ratios From Laboratory to Field

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 4, April 2025.
Abstract Among the subsurface geophysical methods used in the critical zone investigations, induced polarization (IP) shows great vitality thanks to its unique ability to assess porosity via bulk conduction and estimate permeability through surface conduction and/or polarization.
Youzheng Qi, Yuxin Wu
wiley   +1 more source

A schur-padé algorithm for fractional powers of a matrix [PDF]

, 2010
A new algorithm is developed for computing arbitrary real powers A p of a matrix A ∈ ℂn×n. The algorithm starts with a Schur decomposition, takes k square roots of the triangular factor T, evaluates an [m/m] Padé approximant of (1-x)p at I-T 1/2k, and ...
Higham, Nicholas J., Nicholas J. Higham, Lin, Lijing, Lin, Lijing; id_orcid, Lijing Lin   +4 more
core   +1 more source