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On the Adjoint of a Strongly Continuous Semigroup [PDF]

open access: yesAbstract and Applied Analysis, 2008
Using some techniques from vector integration, we prove the weak measurability of the adjoint of strongly continuous semigroups which factor through Banach spaces without isomorphic copy of l1; we also prove the strong continuity away from zero of the ...
Diómedes Bárcenas   +1 more
doaj   +3 more sources

Continuous energy adjoint transport for photons in PHITS [PDF]

open access: yesEPJ Web of Conferences, 2017
Adjoint Monte Carlo can be an effcient algorithm for solving photon transport problems where the size of the tally is relatively small compared to the source. Such problems are typical in environmental radioactivity calculations, where natural or fallout
Malins Alex   +2 more
doaj   +2 more sources

Review of continuous adjoint method for inverse design of indoor thermal environment [PDF]

open access: yesE3S Web of Conferences, 2022
The continuous adjoint method has been used in the indoor environment for more than ten years, but it has not been widely used up to now. This paper describes the current state of the continuous adjoint method and presents an overview of the continuous ...
Zhao Xingwang, Yin Yonggao
doaj   +1 more source

Continuous adjoint complement to the Blasius equation [PDF]

open access: yesPhysics of Fluids, 2021
This manuscript is concerned with a continuous adjoint complement to two-dimensional, incompressible, first-order boundary-layer equations for a flat plate boundary layer. The text is structured into three parts. The first part demonstrates that the adjoint complement can be derived in two ways, following either a first simplify then derive or a first ...
Niklas Kühl   +2 more
openaire   +2 more sources

A multiphase CMAQ version 5.0 adjoint [PDF]

open access: yesGeoscientific Model Development, 2020
We present the development of a multiphase adjoint for the Community Multiscale Air Quality (CMAQ) model, a widely used chemical transport model. The adjoint model provides location- and time-specific gradients that can be used in various applications ...
S. Zhao   +19 more
doaj   +1 more source

Shock Equations and Jump Conditions for the 2D Adjoint Euler Equations

open access: yesAerospace, 2023
This paper considers the formulation of the adjoint problem in two dimensions when there are shocks in the flow solution. For typical cost functions, the adjoint variables are continuous at shocks, wherein they have to obey an internal boundary condition,
Carlos Lozano, Jorge Ponsin
doaj   +1 more source

A 4D-Var inversion system based on the icosahedral grid model (NICAM-TM 4D-Var v1.0) – Part 1: Offline forward and adjoint transport models [PDF]

open access: yesGeoscientific Model Development, 2017
A four-dimensional variational (4D-Var) method is a popular algorithm for inverting atmospheric greenhouse gas (GHG) measurements. In order to meet the computationally intense 4D-Var iterative calculation, offline forward and adjoint transport models are
Y. Niwa   +10 more
doaj   +1 more source

Continuous Adjoint Topology Optimization of Duct Flow Configurations with Explicit Volume Constraint for Design Variable Update

open access: yesEnergies, 2022
The adjoint method is a very promising gradient-based optimisation framework for computational fluid dynamics (CFD), because of its independence of the computation cost from the number of design variables.
Mirza Popovac
doaj   +1 more source

Continuity is an Adjoint Functor [PDF]

open access: yesThe American Mathematical Monthly, 2015
To appear in the American Mathematical ...
openaire   +3 more sources

Continuous-Like Linear Operators on Bilinear Spaces

open access: yesJournal of Mathematical and Fundamental Sciences, 2020
This paper introduces continuous-like linear operators on bilinear spaces as a generalization of continuous linear operators on Hilbert spaces. It is well known that the existence of the adjoint of a linear operator on a Hilbert space is equivalent to ...
Sabarinsyah Sabarinsyah   +2 more
doaj   +1 more source

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