Results 41 to 50 of about 280,299 (312)

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

How to Use White Noise Analysis to Make Feynman Integrals Mathematically Rigorous

open access: yes, 2017
In this chapter we summarize applications of White Noise Analysis within the framework of Feynman Path Integrals. With more than 30 years of intensive study this field can be seen as one of the most important applications.
Wolfgang Bock, Bock, Wolfgang,
core   +1 more source

Intelligent Sensors in Software: The Use of Parametric Models for Phase Noise Analysis

open access: yes, 2006
Intelligent senors have attracted particular attention in the recent past. This paper argues that an “intelligent sensor” should be able to perform on-board signal processing within the sensor’s software in order to produce the optimal signal output.
Dimosthenis Karatzas   +7 more
core   +1 more source

Deformation Quantization by Moyal Star-Product and Stratonovich Chaos

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2012
We make a deformation quantization by Moyal star-product on a space of functions endowed with the normalized Wick product and where Stratonovich chaos are well defined.
Rémi Léandre, Maurice Obame Nguema
doaj   +1 more source

Matched subspace detection with hypothesis dependent noise power [PDF]

open access: yes, 2008
We consider the problem of detecting a subspace signal in white Gaussian noise when the noise power may be different under the null hypothesis—where it is assumed to be known—and the alternative hypothesis.
Cédric Richard   +8 more
core   +1 more source

Force feedback linearization for higher-order electromechanical sigma-delta modulators.

open access: yes, 2005
A higher-order electromechanical sigma–delta modulator can greatly improve the signal-to-noise ratio compared with a second-order loop that only uses the sensing element as a loop filter.
Redman-White, William   +2 more
core   +1 more source

Interpreting the effects of DNA polymerase variants at the structural level

open access: yesMolecular Oncology, EarlyView.
Using MAVISp and molecular dynamics simulations, we analyzed over 60 000 missense variants in POLE and POLD1 from ClinVar, COSMIC, cBioPortal, and saturation mutagenesis. Identified mechanistic indicators, including stability, binding, and long‐range, enable structural interpretation, providing ACMG‐like evidence for possible reclassification of VUS ...
Matteo Arnaudi   +7 more
wiley   +1 more source

Longtime asymptotics of the two-dimensional parabolic Anderson model with white-noise potential [PDF]

open access: yes, 2020
We consider the parabolic Anderson model (PAM) in ℝ ² with a Gaussian (space) white-noise potential. We prove that the almost-sure large-time asymptotic behaviour of the total mass at time t is given asymptotically by Χ t log t, with the deterministic ...
Perkowski, Nicolas   +2 more
core   +1 more source

Renormalization Group Method for a Stochastic Differential Equation with Multiplicative Fractional White Noise

open access: yesMathematics
In this paper, we present an application of the renormalization group method developed by Chen, Goldenfeld and Oono for a stochastic differential equation in a space of Hilbert space-valued generalized random variables with multiplicative noise.
Lihong Guo
doaj   +1 more source

Noise Analysis and Modeling in Visible Light Communication Using Allan Variance

open access: yesIEEE Access, 2018
Visible Light Communication (VLC) is a rising communication technology which uses Light-Emitting Diode (LED) luminaries for high-speed data transferring; however, the optical signal is usually degraded by the noise in the practical VLC system.
Luchi Hua   +4 more
doaj   +1 more source

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