Results 21 to 30 of about 25,372 (159)

All-Time Existence of Smooth Solutions to PDEs of Mixed Type and the Invariant Subspace of Uniform States

open access: yesAdvances in Applied Mathematics, 1995
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Hagstrom, T., Lorenz, J.
openaire   +1 more source

Portopulmonary hypertension practice patterns after liver transplantation

open access: yesLiver Transplantation, EarlyView., 2022
Abstract Portopulmonary hypertension (POPH) is a type of pulmonary arterial hypertension occurring exclusively in those with portal hypertensive liver disease. Liver transplantation (LT) can significantly improve outcomes. Current guidelines counsel against immediate adjustments to targeted therapy after LT and suggest routine echocardiography as ...
Arun Jose   +3 more
wiley   +1 more source

Geophysical Monge–Ampère-Type Equation: Symmetries and Exact Solutions

open access: yesMathematics
This paper studies a mixed PDE containing the second time derivative and a quadratic nonlinearity of the Monge–Ampère type in two spatial variables, which is encountered in geophysical fluid dynamics.
Andrei D. Polyanin, Alexander V. Aksenov
doaj   +1 more source

Vanishing viscosity limits of mixed hyperbolic–elliptic systems arising in multilayer channel flows [PDF]

open access: yes, 2015
This study considers the spatially periodic initial value problem of 2 × 2 quasilinear parabolic systems in one space dimension having quadratic polynomial flux functions.
Papaefthymiou, ES, Papageorgiou, DT
core   +1 more source

The Vanishing Moment Method for Fully Nonlinear Second Order Partial Differential Equations: Formulation, Theory, and Numerical Analysis [PDF]

open access: yes, 2011
The vanishing moment method was introduced by the authors in [37] as a reliable methodology for computing viscosity solutions of fully nonlinear second order partial differential equations (PDEs), in particular, using Galerkin-type numerical methods such
Feng, Xiaobing, Neilan, Michael
core  

Hybrid PDE solver for data-driven problems and modern branching

open access: yes, 2017
The numerical solution of large-scale PDEs, such as those occurring in data-driven applications, unavoidably require powerful parallel computers and tailored parallel algorithms to make the best possible use of them.
Brown, André EX   +11 more
core   +3 more sources

Topology and Material Optimization in Ultra‐Soft Magneto‐Active Structures: Making Advantage of Residual Anisotropies

open access: yesAdvanced Materials, EarlyView.
Residual magnetization induces pronounced mechanical anisotropy in ultra‐soft magnetorheological elastomers, shaping deformation and actuation even without external magnetic fields. This study introduces a computational‐experimental framework integrating magneto‐mechanical coupling into topology optimization for designing soft magnetic actuators with ...
Carlos Perez‐Garcia   +3 more
wiley   +1 more source

A game interpretation of the Neumann problem for fully nonlinear parabolic and elliptic equations

open access: yes, 2012
We provide a deterministic-control-based interpretation for a broad class of fully nonlinear parabolic and elliptic PDEs with continuous Neumann boundary conditions in a smooth domain.
Daniel, Jean-Paul
core   +4 more sources

Spatial‐Wavelength Multiplexing Error‐Controlled Photonic Analog Computing System

open access: yesAdvanced Science, EarlyView.
A novel photonic integrated circuit prototype implementing the concept of general‐purpose analog computing and demonstrate its capability in radio frequency applications. The chip features a multichannel architecture and performs fully optical analog computation with frequency‐domain parallel processing. An FPGA‐based error‐correction algorithm aims to
Tao Zhu   +15 more
wiley   +1 more source

Conditional symmetries for systems of PDEs: new definitions and their application for reaction-diffusion systems

open access: yes, 2010
New definitions of $Q$-conditional symmetry for systems of PDEs are presented, which generalize the standard notation of non-classical (conditional) symmetry.
Cherniha, Roman
core   +1 more source

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