Results 21 to 30 of about 72,925 (302)

Optimized the Performance of Super Resolution Images by Salt and pepper Noise Removal based on a Modified Trimmed Median Filter

open access: yesWasit Journal of Computer and Mathematics Science, 2023
Image processing is an interesting area where noisy images can be restored from salt and pepper noise. Various filtering algorithms can be used in the restoration process.
Muthmainnah, Luís Miguel Cardoso
doaj   +1 more source

PARACONTROLLED DISTRIBUTIONS AND SINGULAR PDES

open access: yesForum of Mathematics, Pi, 2015
We introduce an approach to study certain singular partial differential equations (PDEs) which is based on techniques from paradifferential calculus and on ideas from the theory of controlled rough paths.
MASSIMILIANO GUBINELLI   +2 more
doaj   +1 more source

THE DETERMINISTIC CHAOS OSCILLATOR BASED ON A FIELD-EFFECT TRANSISTOR STRUCTURE WITH NEGATIVE RESISTANCE FOR TELECOMMUNICATIONS SYSTEMS

open access: yesInformation and Telecommunication Sciences, 2016
Background. Application of deterministic chaos oscillators in telecommunication systems requires knowledge about their dynamical properties. Mathematical models and phase portraits of such generators are well known.
Andriy Semenov
doaj   +1 more source

DTI denoising for data with low signal to noise ratios [PDF]

open access: yes, 2005
Low signal to noise ratio (SNR) experiments in diffusion tensor imaging (DTI) give key information about tracking and anisotropy, e. g., by measurements with small voxel sizes or with high b values.
Prigarin, Sergej M.   +6 more
core   +1 more source

Stochastic Resonance in a Multistable System Driven by Gaussian Noise

open access: yesDiscrete Dynamics in Nature and Society, 2016
Stochastic resonance (SR) is investigated in a multistable system driven by Gaussian white noise. Using adiabatic elimination theory and three-state theory, the signal-to-noise ratio (SNR) is derived.
Peiming Shi   +3 more
doaj   +1 more source

Resonance fluorescence of noisy systems

open access: yesNew Journal of Physics, 2023
Light scattering from resonantly or nearly resonantly excited systems, known as resonance fluorescence (RF), has been gaining importance as a versatile tool for investigating quantum states of matter and readout of quantum information, recently including
Rafał A Bogaczewicz   +1 more
doaj   +1 more source

The Analytical Stochastic Solutions for the Stochastic Potential Yu–Toda–Sasa–Fukuyama Equation with Conformable Derivative Using Different Methods

open access: yesFractal and Fractional, 2023
We consider in this study the (3+1)-dimensional stochastic potential Yu–Toda–Sasa–Fukuyama with conformable derivative (SPYTSFE-CD) forced by white noise.
Sahar Albosaily   +4 more
doaj   +1 more source

The asymptotics of stochastically perturbed reaction-diffusion equations and front propagation

open access: yesComptes Rendus. Mathématique, 2020
We study the asymptotics of Allen–Cahn-type bistable reaction-diffusion equations which are additively perturbed by a stochastic forcing (time white noise).
Lions, Pierre-Louis   +1 more
doaj   +1 more source

ERRATUM: White-Noise Representations in Stochastic Realization Theory [PDF]

open access: yesSIAM Journal on Control and Optimization, 2010
A result of [V. S. Borkar, SIAM J. Control Optim. 31 (1993), pp. 1093–1102] concerning characterization of ergodic processes in terms of purely nondeterministic processes is corrected.
openaire   +1 more source

Spatial Smoothing for Diffusion Tensor Imaging with low Signal to Noise Ratios [PDF]

open access: yes, 2003
Though low signal to noise ratio (SNR) experiments in DTI give key information about tracking and anisotropy, e.g. by measurements with very small voxel sizes, due to the complicated impact of thermal noise such experiments are up to now seldom analysed.
Prigarin, Sergej M.   +4 more
core   +1 more source

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