Results 11 to 20 of about 785 (250)
MULTISCALE ANALYSIS BY MEANS OF DISCRETE MOLLIFICATION FOR ECG NOISE REDUCTION
Dyna, 2009 El análisis multiescala es un área de gran actividad investigativa con fuerte impacto en computación científica y matemática aplicada, ocupando un lugar de privilegio en la forma como se entiende la relación entre la matemática y las demás ciencias ...
JUAN PULGARÍN-GIRALDO +2 more
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Automatic numerical differentiation by discrete mollification [PDF]
Computers & Mathematics with Applications, 1987 The author gives a method to estimate the derivative based on attempting to reconstruct a modified version of the derivative. This approach was first introduced by \textit{V. V. Vasin} [Zh. Vychisl. Mat. Mat. Fiz. 13, 1383-1389 (1973; Zbl 0306.65007)].
Murio, D.A.
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Discrete mollification and automatic numerical differentiation [PDF]
Computers & Mathematics with Applications, 1998 Numerical differentiation is an unreliable procedure in the case of a function with noise. The authors continue the study of their proposal to remedy this by a mollification procedure. This is based on the idea of replacing the given function by a convolution product with a smooth function of a given type with small support.
Murio, D.A., Mejía, C.E., Zhan, S.
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Spectral Mollification for Bidirectional Fluorescence
Computer Graphics Forum, 2020 AbstractFluorescent materials can shift energy between wavelengths, thereby creating bright and saturated colors both in natural and artificial materials. However, rendering fluorescence for continuous wavelengths or combined with wavelength dependent path configurations so far has only been feasible using spectral unidirectional methods.
Jung, Alisa +2 more
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Mollification Effects of Policy Gradient Methods [PDF]
CoRR19 pages, 41 ...
Tao Wang, Sylvia L. Herbert, Sicun Gao
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A MOLLIFICATION METHOD FOR ILL-POSED PROBLEMS
Numerische Mathematik, 1994 The author develops a general theory of mollification for approximate solution of ill-posed linear problems in Banach space. For a given family of subspaces on which the problem is well-posed the idea is to construct a corresponding family of mollification operators which map the problem into a well-posed problem on the subspace.
Dinh Nho Hao, Dinh Nho H`ao
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Numerical identification of a nonlinear diffusion coefficient by discrete mollification [PDF]
Computers & Mathematics with Applications, 2011 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Carlos E. Mejía 0001 +2 more
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Mollification along the Coarse Scale Flow
, 2017 This chapter shows how to construct the appropriate mollification of the Reynolds stress along the coarse scale flow. Unlike the velocity field, which was only mollified in the spatial variables and which earned its time-regularity through the Euler-Reynolds equation, the Reynolds stress must be mollified in both space and time. Mollification along the
Philip Isett
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Mathematics, 2019 We consider a time-fractional diffusion equation for an inverse problem to determine an unknown source term, whereby the input data is obtained at a certain time. In general, the inverse problems are ill-posed in the sense of Hadamard. Therefore, in this
Le Dinh Long +3 more
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A Mollification Method for a Noncharacteristic Cauchy Problem for a Parabolic Equation [PDF]
Journal of Mathematical Analysis and Applications, 1996 The object of this paper is the study of the following noncharactristic Cauchy problem \[ u_t-a(x)u_{xx}-b(x)u_x-c(x)u=0,\quad u(0,t)=\varphi(t),\quad u_x(0,t)=0. \] The analysis of this problem is clear and was studied by the author in previous papers, too. It is proved, that under certain assumptions for the coefficients the above problem has a \(L_p\
Hào, Dinh Nho
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