Results 31 to 40 of about 1,013 (219)

A New Conformal Map for Polynomial Chaos Applied to Direction-of-Arrival Estimation via UCA Root-MUSIC

open access: yesSensors, 2022
The effects of random array deformations on Direction-of-Arrival (DOA) estimation with root-Multiple Signal Classification for uniform circular arrays (UCA root-MUSIC) are characterized by a conformally mapped generalized Polynomial Chaos (gPC) algorithm.
Seppe Van Brandt   +3 more
doaj   +1 more source

Stability of Real Parametric Polynomial Discrete Dynamical Systems

open access: yesDiscrete Dynamics in Nature and Society, 2015
We extend and improve the existing characterization of the dynamics of general quadratic real polynomial maps with coefficients that depend on a single parameter λ and generalize this characterization to cubic real polynomial maps, in a consistent theory
Fermin Franco-Medrano   +1 more
doaj   +1 more source

Stochastic Analysis of the Efficiency of a Wireless Power Transfer System Subject to Antenna Variability and Position Uncertainties

open access: yesSensors, 2016
The efficiency of a wireless power transfer (WPT) system in the radiative near-field is inevitably affected by the variability in the design parameters of the deployed antennas and by uncertainties in their mutual position.
Marco Rossi   +3 more
doaj   +1 more source

Chaotic and Hyperchaotic Dynamics of a Clapp Oscillator

open access: yesMathematics, 2022
This paper describes recent findings achieved during a numerical investigation of the circuit known as the Clapp oscillator. By considering the generalized bipolar transistor as an active element and after applying the search-for-chaos optimization ...
Jiri Petrzela
doaj   +1 more source

A Dynamic BI–Orthogonal Field Equation Approach to Efficient Bayesian Inversion

open access: yesInternational Journal of Applied Mathematics and Computer Science, 2017
This paper proposes a novel computationally efficient stochastic spectral projection based approach to Bayesian inversion of a computer simulator with high dimensional parametric and model structure uncertainty.
Tagade Piyush M., Choi Han-Lim
doaj   +1 more source

Safety Assessment and Uncertainty Quantification of Electromagnetic Radiation from Mobile Phones to the Human Head

open access: yesApplied Sciences, 2023
With the rapid development of the mobile communication technology, the design of mobile phones has become more complex, and research on the electromagnetic radiation from mobile phones that reaches the human head has become important. Therefore, first of
Miao Yi   +4 more
doaj   +1 more source

Numerical Procedures for Random Differential Equations

open access: yesJournal of Applied Mathematics, 2018
Some methodological approaches based on generalized polynomial chaos for linear differential equations with random parameters following various types of distribution laws are proposed.
Mohamed Ben Said   +2 more
doaj   +1 more source

Uncertainty Quantification of CMOS Active Filter Circuits: A Non-Intrusive Computational Approach Based on Generalized Polynomial Chaos

open access: yesIEEE Access, 2020
Semiconductor fabrication technologies as applies to the nanometer-era paradigms of nowadays have rendered uncertainty quantification analyses through component-level parameters compulsory and indispensable. Frequency responses of CMOS active filters are
Mecit Emre Duman, Onder Suvak
doaj   +1 more source

Computing Black Scholes with Uncertain Volatility—A Machine Learning Approach

open access: yesMathematics, 2022
In financial mathematics, it is a typical approach to approximate financial markets operating in discrete time by continuous-time models such as the Black Scholes model.
Kathrin Hellmuth, Christian Klingenberg
doaj   +1 more source

Metamodeling for Uncertainty Quantification of a Flood Wave Model for Concrete Dam Breaks

open access: yesEnergies, 2020
Uncertainties in instantaneous dam-break floods are difficult to assess with standard methods (e.g., Monte Carlo simulation) because of the lack of historical observations and high computational costs of the numerical models.
Anna Kalinina   +6 more
doaj   +1 more source

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