搜索结果: 1-15 共查到“数学 Phase”相关记录80条 . 查询时间(0.205 秒)
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars： A decoupled, linear, and unconditionally energy stable finite element method for a two-phase ferrohydrodynamics model
两相铁流体 动力学模型 能量稳定 有限元方法
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2023/4/28
In this talk, we present numerical approximations of a phase-field model for two-phase ferrofluids, which consists of the Navier-Stokes equations, the Cahn-Hilliard equation, the magnetostatic equatio...
RETRIEVAL OF AEROSOL PHASE FUNCTION AND POLARIZED PHASE FUNCTION FROM POLARIZATION OF SKYLIGHT FOR DIFFERENT OBSERVATION GEOMETRIES
Aerosol Polarization Phase function Polarized phase function Retrieval Sun-sky radiometer
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2018/5/14
The phase function and polarized phase function are important optical parameters, which describe scattering properties of atmospheric aerosol particles. Polarization of skylight induced by the scatter...
Phase-field model for reconstructed stepped surface
Phase-field model reconstructed stepped surface
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2015/10/16
We formulate a phase-field, or diffuse-interface, model for the evolution of stepped surfaces under surface diffusion in the presence of distinct material parameters across nanoscale terraces. In the ...
Homogenization of one-phase Stefan-type problems in periodic and random media
one-phase Stefan-type periodic random
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2015/10/15
We investigate the homogenization of Stefan-type problems with oscillating diffusion coefficients. Both cases of periodic and random (stationary ergodic) medium are considered. The proof relies on the...
MICROPHONE ARRAY SPEECH ENHANCEMENT BY BAYESIAN ESTIMATION OF SPECTRAL AMPLITUDE AND PHASE
MICROPHONE ARRAY SPEECH ENHANCEMENT BAYESIAN ESTIMATION SPECTRAL AMPLITUDE AND PHASE
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2015/9/29
Microphone arrays provide new opportunities for noise reduction and speech enhancement. This paper presents anovel decomposition of the estimation problems for short-time spectral amplitude (STSA), lo...
Fast Algorithms for Signal Reconstruction without Phase
Frames mutually unbiased bases equiangular frames projective 2-designs discrete chirps
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2015/9/29
We derive fast algorithms for doing signal reconstruction without phase. This type of problem is important insignal processing, especially speech recognition technology, and has relevance for state to...
Frames for Linear Reconstruction without Phase
Frames Linear Reconstruction Phase
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2015/9/29
The objective of this paper is the linear reconstruction of a vector, up to a unimodular constant, when all phase information is lost, meaning only the magnitudes of frame coefficients are known. Reco...
On signal reconstruction without phase
Frame Signal reconstruction Phase Speech recognition
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2015/9/29
We will construct new classes of Parseval frames for a Hilbert space which allow signal reconstruction from theabsolute value of the frame coefficients. As a consequence, signal reconstruction can be ...
STABILITY OF FRAMES WHICH GIVE PHASE RETRIEVAL
STABILITY OF FRAMES PHASE RETRIEVAL
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2015/9/29
In this paper we study the property of phase retrievability by redundant sysems of vectors under perturbations of the frame set. Specifically we show that if a set F of m vectors in the complex Hilber...
Stability of Phase Retrievable Frames
Frames phase retrieval problem perturbations critical redundancy
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2015/9/29
In this paper we study the property of phase retrievability by redundant sysems of vectors under perturbations of the frame set. Specifically we show that if a set F of m vectors in the complex Hilber...
Estimating the phase of synchronized oscillators
synchronized oscillators Estimating
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2015/8/25
The state of a collection of phase-locked oscillators is determined by a single phase variable or cyclic
coordinate. This paper presents a computational method, Phaser, for estimating the phase of ph...
Dissecting the Phase Response of a Model Bursting Neuron
phase response isochron multiple time-scales
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2015/8/25
We investigate the phase response properties of the Hindmarsh–Rose model of neuronal bursting
using burst phase response curves (BPRCs) computed with an infinitesimal perturbation approximation
and ...
Phase Portraits of Planar Vector Fields: Computer Proofs
Computer Proofs Planar Vector Fields
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2015/8/25
This paper presents an algorithm for computer veri cation of the
global structure of structurally stable planar vector elds. Constructing
analytical proofs for the qualitative properties of phase p...
Universality in Polytope Phase Transitions and Message Passing Algorithms
Nonlinear mapping symmetric random matrix spin glass theory approximate messaging algorithm
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2015/8/21
We consider a class of nonlinear mappings FA;N in RN indexed by symmetric random matrices A 2 RNN with independent entries. Within spin glass theory, special cases of these mappings correspond to ite...
The glassy phase of Gallager codes
UMR 8549, Unit′e Mixte de Recherche du Centre National de la Recherche Scientifi que et de l’ Ecole Normale Sup′erieure
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2015/8/21
Gallager codes are the best error-correcting codes to-date. In this paper we study them by using the tools of statistical mechanics. The corresponding statistical mechanics model is a spin model on a ...