Results 171 to 180 of about 169,909 (330)
AMR‐Wind: A Performance‐Portable, High‐Fidelity Flow Solver for Wind Farm Simulations
Wind Energy, Volume 28, Issue 5, May 2025.ABSTRACT We present AMR‐Wind, a verified and validated high‐fidelity computational‐fluid‐dynamics code for wind farm flows. AMR‐Wind is a block‐structured, adaptive‐mesh, incompressible‐flow solver that enables predictive simulations of the atmospheric boundary layer and wind plants.
Michael B. Kuhn +16 more
wiley +1 more source
Three-dimensional Riemannian manifolds associated with locally conformal Riemannian product manifolds [PDF]
arXivA 3-dimensional Riemannian manifold equipped with a tensor structure of type $(1,1)$, whose fourth power is the identity, is considered. This structure acts as an isometry with respect to the metric. A Riemannian almost product manifold associated with such a manifold is also studied.
arxiv
A new variational method for finding Einstein metrics on compact Kähler manifolds, I
, 1988 Melvyn S. Berger, Pascal Cherrier
openalex +1 more source
LP-Kenmotsu Manifolds Admitting Bach Almost Solitons
Universal Journal of Mathematics and ApplicationsFor a Lorentzian para-Kenmotsu manifold of dimension $m$ (briefly, ${(LPK)_{m}}$) admitting Bach almost soliton $(g,\zeta,\lambda)$, we explored the characteristics of the norm of Ricci operator. Besides, we gave the necessary condition for ${(LPK)_{m}}
Mohd Bilal +4 more
doaj +1 more source
There are no proper Berwald--Einstein manifolds [PDF]
Publicationes Mathematicae Debrecen, 2015 Deng, Shaoqiang +2 more
openaire +2 more sources
Complex manifolds and Einstein’s equations
, 1982 We present a generalization of Penrose’s twistor theory based on the geometry of rational curves in complex manifolds. The analytical counterpart of this complex geometry consists, in the three simplest cases, of a system of differential equations closely connected with Einstein’s equations.
openaire +3 more sources
Deep learning‐based whole‐brain B1+‐mapping at 7T
Magnetic Resonance in Medicine, Volume 93, Issue 4, Page 1700-1711, April 2025.Abstract Purpose This study investigates the feasibility of using complex‐valued neural networks (NNs) to estimate quantitative transmit magnetic RF field (B1+) maps from multi‐slice localizer scans with different slice orientations in the human head at 7T, aiming to accelerate subject‐specific B1+‐calibration using parallel transmission (pTx ...
Felix Krueger +10 more
wiley +1 more source
The spectrum of an asymptotically hyperbolic Einstein manifold
, 1994 John M. Lee
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ChemPhysChem, Volume 26, Issue 6, March 15, 2025.What happens, if in the synthesis of flat silver platelets, the slow deposition of silver along twinning faults is disturbed by the addition of a nobler metal? We have looked into it and found a way to fine‐tune the metal deposition in lateral and vertical direction.
Jonas Kluitmann +3 more
wiley +1 more source