Results 81 to 90 of about 781,590 (289)

Preconditioned Bi-Conjugate Gradient Method for Radiative Transfer in Spherical Media

open access: yes, 2009
19 pages, 12 figures (accepted ApJ)A robust numerical method called the Preconditioned Bi-Conjugate Gradient (Pre-BiCG)method is proposed for the solution of radiative transfer equation in spherical geometry.A variant of this method called Stabilized ...
Léger, L.   +3 more
core   +3 more sources

Application of Exact Newton Optimisation to the Maximum Likelihood Ensemble Filter

open access: yesTellus: Series A, Dynamic Meteorology and Oceanography
The Newton method is used for optimisation in the maximum likelihood ensemble filter (MLEF) to improve analysis convergence and accuracy. The proposed method is compared against the original method using the conjugate gradient (CG) method preconditioned ...
Takeshi Enomoto, Saori Nakashita
doaj   +1 more source

The multigrid preconditioned conjugate gradient method [PDF]

open access: yes, 1993
A multigrid preconditioned conjugate gradient method (MGCG method), which uses the multigrid method as a preconditioner of the PCG method, is proposed.
Tatebe, Osamu
core  

Mesoporous‐Shell Monolayer Plasmonic Architecture Enables Quantitative and Decision‐Guided SERS

open access: yesAdvanced Science, EarlyView.
Mesoporous‐shell‐regulated molecular transport combined with monolayer hotspot determinism transforms surface‐enhanced Raman spectroscopy (SERS) from ultrasensitive detection into quantitative and decision‐guided molecular sensing. ABSTRACT Quantitative surface‐enhanced Raman spectroscopy (SERS) has long been impeded by stochastic hotspot formation ...
Guangyao Huang   +9 more
wiley   +1 more source

Targeting β2‐Adrenergic Receptor Stability With Lycorine Reveals a Host‐Directed Pathway for Antiviral Defense Against Poxviruses

open access: yesAdvanced Science, EarlyView.
Chronic stress drives autophagy‐mediated β2‐AR degradation, impairing antiviral immunity and promoting poxvirus lethality. Lycorine directly stabilizes β2‐AR to restore host defense, suppress excessive inflammation and improve survival. ABSTRACT Psychological stress is a pervasive yet poorly understood modulator of infectious disease outcomes. Here, we
Xin Zhang   +12 more
wiley   +1 more source

Preconditioned Conjugate Gradient Method for Super Resolution Image Reconstruction.

open access: yes, 2006
We proposed a novel preconditioner based PCG (Preconditioned Conjugate Gradient) method for super resolution image reconstruction. Compared with conventional block circulant type preconditioner, the proposed preconditioner can be more effective applied ...
이은성
core   +1 more source

A precise integral preconditioned conjugate gradient method for ill-conditioned linear systems

open access: yes四川大学学报. 自然科学版
Ill-conditioned linear equation system appears in many engineering problems.For ill-conditioned linear equation systems with large condition number, there is a big challenge to the numerical methods to keep high accuracy and high speed simultaneously.In ...
ZENG Xin, ZHANG Shi-Quan
doaj  

A second-level diagonal preconditioner for single-step SNPBLUP

open access: yesGenetics Selection Evolution, 2019
Background The preconditioned conjugate gradient (PCG) method is an iterative solver of linear equations systems commonly used in animal breeding. However, the PCG method has been shown to encounter convergence issues when applied to single-step single ...
Jeremie Vandenplas   +3 more
doaj   +1 more source

Monolayer MoS2 With Ultrahigh Piezoelectricity: From ALD Dose Control to Device Performance

open access: yesAdvanced Science, EarlyView.
This study demonstrates that controlling precursor dosages in atomic layer deposition (ALD) serves to regulate ultrathin oxide quality, which in turn determines sulfurization behavior and MoS2 monolayer continuity. The resulting continuous, low‐defect monolayers enable improved piezoelectric performance and support a flexible slippage sensor, linking ...
Yun Li   +16 more
wiley   +1 more source

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