Results 41 to 50 of about 1,364,858 (220)

Hyperbolic Parabolic Equations with Nonlinearity of Kirchhoff-Carrier Type

Revista Matemática Complutense, 1995
The author considers the Cauchy problem for a nonlinear hyperbolic-parabolic equation of Kirchhoff type. Using a diagonalization theorem, she proves the existence of local generalized solutions.
openaire   +3 more sources

Physics‐Informed Neural Network‐Enabled Forward Prediction and Inverse Design of Ring Origami

Advanced Science, EarlyView.
This work presents a KRT‐PINN framework that integrates Kirchhoff rod theory with physics‐informed neural networks for the forward prediction and inverse design of ring origami consisting of closed‐loop rods. The framework predicts stable states of segmented rings with prescribed natural‐curvature profiles and determines the natural‐curvature profiles ...
Luyuan Ning, Lu Lu, Sophie Leanza, Ruike Renee Zhao   +3 more
wiley   +1 more source

Fast computation of the nonlocal boundary condition in finite difference parabolic equation radiowave propagation simulations [PDF]

, 2008
Finite difference parabolic equation method (FD-PEM) codes using a nonlocal boundary condition to model radiowave propagation over electrically large domains, require the computation of time consuming spatial convolution integrals. For the first time, we
Mias, Christos
core   +1 more source

Singularity for a nonlinear degenerate hyperbolic-parabolic coupled system arising from nematic liquid crystals

Advances in Nonlinear Analysis, 2022
This article focuses on the singularity formation of smooth solutions for a one-dimensional nonlinear degenerate hyperbolic-parabolic coupled system originating from the Poiseuille flow of nematic liquid crystals.
Hu Yanbo
doaj   +1 more source

Space‐Time Metasurface Antenna Enabled High‐Dimensional Electromagnetic Modulation for Intrinsic Physical Layer Security

Advanced Science, EarlyView.
The concept of high‐dimensional EM modulation using the STMA for physical layer secure communication is illustrated in figure. The STMA consists of a series of programmable unit cells, with 1‐bit reconfigurable phase states (0/π). The STMA is excited by a monochromatic continuous wave (CW) at frequency fc and controlled by a field‐programmable gate ...
Xinyu Fang, Yiqing Sun, Chenfeng Yang, Siran Wang, Zheng Xing Wang, Kaixu Wang, Geng‐Bo Wu   +6 more
wiley   +1 more source

Comparison of hyperbolic and parabolic equations modelling buoyancy driven flow in a square cavity

Partial Differential Equations in Applied Mathematics
The effects of a hyperbolic and parabolic heat transfer equation on buoyancy-driven flow in a square cavity are studied. Boundary conditions where the bottom wall is hot and the side and top walls are cold are investigated.
E. Momoniat, R.S. Herbst, C. Harley
doaj   +1 more source

Tricomi problem analogue for loaded equation of hyperbolic-parabolic type with variable coefficients

Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2007
An analogue of Tricomi problem for loaded equation of hyperbolic-parabolic type with variable coefficients is researched. The theorem on existence and uniqueness of solution is proved for special conditions on the coefficients.
K. U. Khubiev
doaj   +1 more source

Box–Behnken optimization and ANN‐ANFIS integrated modelling for transesterification using thermally activated basic oxygen furnace slag catalyst

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract Global energy demand and environmental concerns have intensified the search for renewable and sustainable energy sources. This study thus, focuses on optimizing the transesterification process of waste cooking oil (WCO) using thermally activated basic oxygen furnace slag catalyst calcined at 850°C (BOF 850). The optimization and modelling were
Johra S. Ali, Hillary L. Rutto
wiley   +1 more source

Deterministic and Stochastic Dynamics in Spinodal Decomposition of a Binary System

Успехи физики металлов, 2009
A model for diffusion and phase separation, which takes into account hyperbolic relaxation of the solute diffusion flux, is developed. Such a ‘hyperbolic model’ provides analysis of ‘hyperbolic evolution’ of patterns in spinodal decomposition in systems ...
D. O. Kharchenko, P. K. Galenko, V. G. Lebedev
doaj   +1 more source

ON A BOUNDARY-VALUE PROBLEM FOR THE THIRD ORDER OF A PARABOLO-HYPERBOLIC TYPE IN A VAGINATED SIXTY-DIMENSIONAL REGION [PDF]

Vestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2016
In the study of problems of mathematical physics, the methods of differential and integral equations are used. This paper is an example of the application of these methods to the solution of a single boundary-value problem for a third-order parabolic ...
Mamazhonov M., Shermatova Kh. M.
doaj   +1 more source