Results 101 to 110 of about 4,579 (296)
A logarithmic Gauss curvature flow and the Minkowski problem
Annales de l'Institut Henri Poincaré C, Analyse non linéaire, 2000 Let X_0 be a smooth uniformly convex hypersurface and f a postive smooth function in S^n . We study the motion of convex hypersurfaces X(\cdot,t)
Chou, Kai-Seng, Wang, Xu-Jia
openaire +3 more sources
Journal of Raman Spectroscopy, EarlyView.Raman spectra containing D/G features are fit using combinations of basis functions and initial conditions. Fits with two Lorentzian functions converged to a single optimized fit even with variation of initial peak positions. For five‐band fits, sometimes the final fit varied with initial conditions, and constraints on peak center position were ...
David C. Doughty, Steven C. Hill
wiley +1 more source
The Gauss-Kronecker curvature of minimal hypersurfaces in four dimensional space forms
, 2011 Neste trabalho estudamos hipersuperfÃcies mÃnimas completas e com curvatura de Gauss-Kronecker constante em uma forma espacial Q4(c). Provamos que o Ãnfimo do valor absoluto da curvatura de Gauss-Kronecker de uma hipersuperfÃcie mÃnima completa em Q4(c);
Renato Oliveira Targino
core +2 more sources
Practical Guide and Best Practices for Diffusion NMR Processing With GNAT
Magnetic Resonance in Chemistry, EarlyView.A practical and reproducible workflow for diffusion‐NMR (DOSY) data analysis is introduced through a step‐by‐step GNAT tutorial. By establishing clear processing guidelines, validation strategies, and reporting standards, this work aims to reduce variability in diffusion measurements and promote more transparent, comparable, and reliable DOSY studies ...
Tadeu Luiz Gomes Cabral +3 more
wiley +1 more source
Colliding scalar pulses in the Einstein-Gauss-Bonnet gravity
EPJ Web of Conferences, 2018 We numerically investigated how the nonlinear dynamics depends on the dimensionality and on the higher-order curvature corrections in the form of Gauss-Bonnet (GB) terms, with a model of colliding scalar pulses in plane-symmetric space-time.
Shinkai Hisaaki, Torii Takashi
doaj +1 more source
Pure Gaussian Apodisation Reduces Integral Crosstalk Sensitivity in Quantitative NMR
Magnetic Resonance in Chemistry, EarlyView.Exponential apodisation redistributes peak area away from its centre, which increases crosstalk with neighbouring peaks and reduces integral trueness when integrating between defined regions. A pure Gaussian apodisation limits wing growth: Crosstalk between peaks is not worsened, and trueness is conserved during integration.
A. Flook +2 more
wiley +1 more source
Characterization of minimal submanifolds by total Gauss curvature.
, 2003 The main goal of this paper is to investigate necessary and sufficient conditions for finite total Gauss curvature of a complete, connected, embedded minimal submanifold of dimension two or greater in Euclidean N-space; such results may then be used to ...
core
, 2011 The Gauss map maps the unit normal of a surface (on the right) to the unit sphere (on the left). The area surrounding the point on the surface is thus mapped to an area on the unit sphere.
Rogers, Michael
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Denoising of ASL Data Using Deep Learning Priors Generated From Distribution Remapping
Magnetic Resonance in Medicine, EarlyView.ABSTRACT Purpose To develop an effective deep learning (DL)–based method to denoise arterial spin labeling (ASL) data. Methods Conventional DL–based ASL denoising methods often suffer from overfitting and poor generalization when training data are limited.
Ziyang Xu +9 more
wiley +1 more source
International Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.ABSTRACT Numerical simulation of hydraulic fracturing remains challenging due to the strong coupling between geomechanics and fluid flow when modelling multiple physical mechanisms of rock deformation, fracture evolution and fluid leak‐off. This study develops a coupled hydraulic fracture propagation framework that combines the extended finite element ...
Ran Tao, Juliana Y. Leung, Samer Adeeb
wiley +1 more source