Results 31 to 40 of about 125,502 (226)

Constraints Optimal Control Governing by Triple Nonlinear Hyperbolic Boundary Value Problem

open access: yesJournal of Applied Mathematics, 2020
The focus of this work lies on proving the existence theorem of a unique state vector solution (Stvs) of the triple nonlinear hyperbolic boundary value problem (TNHBVP) when the classical continuous control vector (CCCVE) is fixed by using the Galerkin ...
Jamil A. Ali Al-Hawasy, Lamyaa H. Ali
doaj   +1 more source

Light pseudo-Goldstone bosons without explicit symmetry breaking [PDF]

open access: yes, 2006
A mechanism is discussed to obtain light scalar fields from a spontaneously broken continuous symmetry without explicitly breaking it. If there is a continuous manifold of classical vacua in orbit space, its tangent directions describe classically ...
ANTONIO O. BOUZAS   +2 more
core   +4 more sources

Shape Optimization of a Two-Fluid Mixing Device Using Continuous Adjoint

open access: yesFluids, 2020
In this paper, the continuous adjoint method is used for the optimization of a static mixing device. The CFD model used is suitable for the flow simulation of the two miscible fluids that enter the device.
Pavlos Alexias   +1 more
doaj   +1 more source

Cathode Shape Design for Steady-State Electrochemical Machining

open access: yesAlgorithms, 2023
The inverse or cathode shape design problem of electrochemical machining (ECM) deals with the computation of the shape of the tool cathode required for producing a workpiece anode of a desired shape.
Jinming Lu, Ewald A. Werner
doaj   +1 more source

A non-self-adjoint Lebesgue decomposition

open access: yes, 2013
We study the structure of bounded linear functionals on a class of non-self-adjoint operator algebras that includes the multiplier algebra of every complete Nevanlinna-Pick space, and in particular the multiplier algebra of the Drury-Arveson space.
Kennedy, Matthew, Yang, Dilian
core   +1 more source

Variational data assimilation for the initial-value dynamo problem [PDF]

open access: yes, 2011
The secular variation of the geomagnetic field as observed at the Earth's surface results from the complex magnetohydrodynamics taking place in the fluid core of the Earth.
Andrew Jackson   +22 more
core   +1 more source

Approximations of Strongly Continuous Families of Unbounded Self-Adjoint Operators [PDF]

open access: yesCommunications in Mathematical Physics, 2016
22 pages, final version to appear in Commun.
Ben-Artzi, J, Holding, T
openaire   +5 more sources

Continuation Semantics and Self-adjointness

open access: yesElectronic Notes in Theoretical Computer Science, 1997
AbstractWe give an abstract categorical presentation of continuation semantics by taking the continuation type constructor ¬ (or cont in Standard ML of New Jersey) as primitive. This constructor on types extends to a contravariant functor on terms which is adjoint to itself on the left; restricted to the subcategory of those programs that do not ...
openaire   +1 more source

cashocs: A Computational, Adjoint-Based Shape Optimization and Optimal Control Software

open access: yesSoftwareX, 2021
The solution of optimization problems constrained by partial differential equations (PDEs) plays an important role in many areas of science and industry.
Sebastian Blauth
doaj   +1 more source

Aerodynamic Optimization Based on Continuous Adjoint Method for a Flexible Wing

open access: yesInternational Journal of Aerospace Engineering, 2016
Aerodynamic optimization based on continuous adjoint method for a flexible wing is developed using FORTRAN 90 in the present work. Aerostructural analysis is performed on the basis of high-fidelity models with Euler equations on the aerodynamic side and ...
Zhaoke Xu, Jian Xia
doaj   +1 more source

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