Results 1 to 10 of about 22,026,600 (288)

An invitation to resolvent analysis [PDF]

open access: yesTheoretical and Computational Fluid Dynamics
AbstractResolvent analysis is a powerful tool that can reveal the linear amplification mechanisms between the forcing inputs and the response outputs about a base flow. These mechanisms can be revealed in terms of a pair of forcing and response modes and the associated energy gains (amplification magnitude) at a given frequency. The linear relationship
Kunihiko Taira, Chi-An Yeh
exaly   +5 more sources

An analysis on the approximate controllability of neutral impulsive stochastic integrodifferential inclusions via resolvent operators [PDF]

open access: yesHeliyon, 2023
This article focuses on the approximate controllability of impulsive neutral stochastic integrodifferential inclusions in Hilbert spaces. We used resolvent operators, fixed point approaches, and semigroup theory to achieve the article's main results ...
Yong-Ki Ma   +4 more
doaj   +2 more sources

Variational formulation of resolvent analysis [PDF]

open access: yesPhysical Review Fluids, 2022
The conceptual picture underlying resolvent analysis(RA) is that the nonlinear term in the Navier-Stokes(NS) equations provides an intrinsic forcing to the linear dynamics, a description inspired by control theory. The inverse of the linear operator, defined as the resolvent, is interpreted as a transfer function between the forcing and the velocity ...
Benedikt Barthel   +2 more
openaire   +3 more sources

Experiments and Modeling of a Compliant Wall Response to a Turbulent Boundary Layer with Dynamic Roughness Forcing

open access: yesFluids, 2021
The response of a compliant surface in a turbulent boundary layer forced by a dynamic roughness is studied using experiments and resolvent analysis. Water tunnel experiments are carried out at a friction Reynolds number of Reτ≈410, with flow and surface ...
David P. Huynh   +2 more
doaj   +1 more source

Data-driven resolvent analysis [PDF]

open access: yesJournal of Fluid Mechanics, 2021
Abstract
Benjamin Herrmann   +4 more
openaire   +3 more sources

A Complete Review of the General Quartic Equation with Real Coefficients and Multiple Roots

open access: yesMathematics, 2022
This paper presents a general analysis of all the quartic equations with real coefficients and multiple roots; this analysis revealed some unknown formulae to solve each kind of these equations and some precisions about the relation between these ones ...
Mauricio Chávez-Pichardo   +4 more
doaj   +1 more source

On generalized Yosida inclusion problem with application

open access: yesResults in Control and Optimization, 2023
Herein, a generalized Yosida inclusion problem involving Φ-relaxed co-accretive mapping is investigated. The resolvent and analogous generalized Yosida approximation operator is explicated and its characteristics are outlined.
Mohammad Akram
doaj   +1 more source

A Note on Approximate Controllability of Fractional Semilinear Integrodifferential Control Systems via Resolvent Operators

open access: yesFractal and Fractional, 2022
This article primarily focuses on the approximate controllability of fractional semilinear integrodifferential equations using resolvent operators. Two alternative sets of necessary requirements have been studied.
Velusamy Vijayakumar   +6 more
doaj   +1 more source

On the Practicality of the Analytical Solutions for all Third- and Fourth-Degree Algebraic Equations with Real Coefficients

open access: yesMathematics, 2023
In order to propose a deeper analysis of the general quartic equation with real coefficients, the analytical solutions for all cubic and quartic equations were reviewed here; then, it was found that there can only be one form of the resolvent cubic that ...
Mauricio Chávez-Pichardo   +4 more
doaj   +1 more source

Time-resolved burst variance analysis

open access: yesBiophysical Reports, 2023
Quantifying biomolecular dynamics has become a major task of single-molecule fluorescence spectroscopy methods. In single-molecule Förster resonance energy transfer (smFRET), kinetic information is extracted from the stream of photons emitted by attached donor and acceptor fluorophores.
Terterov, Ivan   +3 more
openaire   +3 more sources

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