Results 71 to 80 of about 15,056,914 (247)

Existence Results for Singular Nabla Fractional Perturbed Problems

Fractal and Fractional
The aim of the present work is to study a class of singular perturbed nabla fractional problems coupled with Dirichlet conditions. Under sufficient conditions we show that the related Green’s function that can be expressed as an infinite series, is ...
Nikolay D. Dimitrov, Jagan Mohan Jonnalagadda   +1 more
doaj   +1 more source

Immersed Boundary Projection Method for Boundaries With Slip Velocities

International Journal for Numerical Methods in Fluids, EarlyView.
A formulation of the immersed boundary method for incompressible flow over arbitrarily‐shaped bodies with surface slip described by the Navier boundary condition is presented. The wall slip velocity and the boundary force are determined implicitly through a projection to satisfy both the boundary condition and the divergence‐free condition of the ...
Takehiro Fujii, Takeshi Omori
wiley   +1 more source

Green's functions and existence of solutions of nonlinear fractional implicit difference equations with Dirichlet boundary conditions [PDF]

Opuscula Mathematica
This article is devoted to deduce the expression of the Green's function related to a general constant coefficients fractional difference equation coupled to Dirichlet conditions. In this case, due to the points where some of the fractional operators are
Alberto Cabada, Nikolay D. Dimitrov, Jagan Mohan Jonnalagadda   +2 more
doaj   +1 more source

Bayesian Multivariate Two‐Stage Volatility‐Return Models (MTS‐VR)

Journal of Forecasting, EarlyView.
ABSTRACT This paper develops a class of models to capture the joint dynamics of asset returns and multivariate volatility. Owing to its two‐stage construction, this class is referred to as the multivariate two‐stage volatility‐return (MTS‐VR) model.
Zhenglyu Huang, Jennifer S. K. Chan, Gareth W. Peters   +2 more
wiley   +1 more source

A weighted limit theorem in the space of analytic functions for general dirichlet series. [PDF]

, 2014
Work reminds existing results and proves a weighted limit theorem in the space of analytic functions for general Dirichlet ...
Pacevičius, Zigmas,
core  

Antiferroelectric Phase Transitions Under Electric Fields: A Review of Physics and Applications

Interdisciplinary Materials, EarlyView.
Field‐induced phase transitions in antiferroelectric materials, driven by electric field, temperature, or stress, enable diverse applications including energy storage, electrocaloric cooling, and negative capacitance. These transitions are regulated through compositional design, strain engineering, heterostructure, and size effect, providing a unified ...
Dingxin Wang, Ke Xu, Xinying Zhu, Song Liu, Jing Wang, Xi Kong, Letao Yang, Houbing Huang   +7 more
wiley   +1 more source

Global uniqueness for a semilinear biharmonic equation

Boundary Value Problems
In this paper, we prove that the knowledge of the Dirichlet-to-Neumann map, measured on the full boundary of the bounded domain in R n , n ≥ 3 $\mathbb{R}^{n}, n\geq 3$ , can uniquely determine the Taylor series of a ( x , z ) $a(x,z)$ at z = 0 $z=0 ...
Yanjun Ma, Hongxiang Zhang
doaj   +1 more source

A Coupled AquaCrop–Richards Model for Improved Crop Yield Prediction Through Physically Based Soil Water Dynamics

Irrigation and Drainage, EarlyView.
ABSTRACT Crop modelling is essential for agricultural water management but often relies on simplified water balance routines that limit representation of soil moisture dynamics. To address this limitation, we developed a coupled model that integrates the 1‐D Richards equation, solved using a finite difference method into the FAO AquaCrop.
Krishna Panthi, Vidya Samadi, Carlos Toxtli   +2 more
wiley   +1 more source

An All‐At‐Once Solver for Visco‐Acoustic Full Waveform Inversion in the Time‐Domain

Mathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT Full waveform inversion (FWI) is the cutting‐edge seismic imaging technique used to reconstruct subsurface material properties such as wave velocities, mass density, and attenuation from measurements of reflected wavefields. In this article, we present the first implementation of FWI in the visco‐acoustic regime, based on a new time‐domain all‐
Christian Rheinbay, Andreas Rieder
wiley   +1 more source

On Bohr's theorem for general Dirichlet series

Mathematische Nachrichten, 2020
AbstractWe present quantitative versions of Bohr's theorem on general Dirichlet series assuming different assumptions on the frequency , including the conditions introduced by Bohr and Landau. Therefore, using the summation method by typical (first) means invented by M.
openaire   +2 more sources