Results 71 to 80 of about 300,187 (326)

Corrected iteration

open access: yesBollettino dell'Unione Matematica Italiana, 2022
arXiv admin note: substantial text overlap with arXiv:0904.0817, arXiv:1302 ...
openaire   +3 more sources

Coupled Clustering in Hierarchical Matrices for the Oseen Problem

open access: yesInternational Journal for Numerical Methods in Fluids, EarlyView.
Fluid flow problems can be modelled by the Navier‐Stokes or, after linearization, by the Oseen equations. Their discretization results in linear systems in saddle point form which are typically very large and need to be solved iteratively. We propose a novel block structure for hierarchical matrices which is then used to build preconditioners for the ...
Jonas Grams, Sabine Le Borne
wiley   +1 more source

Reassessment of steady-state operation in ITER with NBI and EC heating and current drive

open access: yesNuclear Fusion, 2020
One of the three goals of the ITER project is to demonstrate fusion gain Q ≥ 5 in steady-state operation (SSO). A reassessment of the necessary conditions for Q ≥ 5 SSO in ITER has been carried out for steady-state scenarios assuming no internal ...
A. Polevoi   +7 more
semanticscholar   +1 more source

Two‐Dimensional Transition Metal Dichalcogenides Properties Enhanced by Nano‐ and Micro‐Scale Shape Control

open access: yesMetalMat, EarlyView.
This review explores current strategies for shaping two‐dimensional transition metal dichalcogenides (TMDs) beyond their planar form. It highlights how strain engineering, nanopatterning, and growth on complex substrates modulate their mechanical, optical, and electronic properties.
C. Grazianetti   +6 more
wiley   +1 more source

Operation of the Electron Cyclotron system in the ITER new baseline [PDF]

open access: yesEPJ Web of Conferences
The ITER Research Plan (IRP) has undergone significant modifications based on the change of First Wall (FW) material from beryllium (Be) to tungsten (W). Such a change, together with the constraint of achieving Q=10 for 300s with a neutron fluence of ~1%
Schneider Mireille   +8 more
doaj   +1 more source

Iterative fluid dynamics [PDF]

open access: yesThe European Physical Journal A, 2012
An iterative scheme is presented to solve analytically the relativistic fluid dynamics equations. The scheme is applied to longitudinal expansion, transversal symmetric and transversal asymmetric (triaxial) expansion as well. Within this scheme it is possible to describe the dynamics of a strongly coupled (i.e.
F. Wunderlich, B. Kämpfer
openaire   +3 more sources

A Data-Driven Iteratively Regularized Landweber Iteration [PDF]

open access: yesNumerical Functional Analysis and Optimization, 2020
We derive and analyse a new variant of the iteratively regularized Landweber iteration, for solving linear and nonlinear ill-posed inverse problems. The method takes into account training data, which are used to estimate the interior of a black box, which is used to define the iteration process.
Aspri A.   +3 more
openaire   +4 more sources

Revision of Manettia (Rubiaceae) in Paraguay

open access: yesNordic Journal of Botany, EarlyView.
Manettia Mutis is a Neotropical genus comprising over 100 species, many of which are only known from their original descriptions or, at most, from revisions dating back over 100 years. Recent review studies have remained unpublished for several years. Conventional taxonomic methods are followed.
Silvana Yasmin Gauto   +2 more
wiley   +1 more source

Overview of the JET preparation for deuterium–tritium operation with the ITER like-wall

open access: yesNuclear Fusion, 2019
For the past several years, the JET scientific programme (Pamela et al 2007 Fusion Eng. Des. 82 590) has been engaged in a multi-campaign effort, including experiments in D, H and T, leading up to 2020 and the first experiments with 50%/50% D–T mixtures ...
E. Joffrin   +499 more
semanticscholar   +1 more source

On the Convergence of Conjugate Gradient and GMRES Algorithms in the Forward Backward Sweep Method for Optimal Control

open access: yesOptimal Control Applications and Methods, EarlyView.
Optimal control combines state and adjoint equations, which yield the state (x$$ x $$) and adjoint (lambda) variables as a function of the control variables (u$$ u $$). This structure allows us to design strategies for iteratively updating the control variable, based on conjugate gradient (CG) or GMRES algorithms.
N. Armengou‐Riera   +4 more
wiley   +1 more source

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