Results 31 to 40 of about 3,724,631 (298)

A Novel Finite Difference Scheme for Normal Mode Models in Underwater Acoustics

open access: yesJournal of Marine Science and Engineering, 2023
Normal mode models are commonly used to simulate sound propagation problems in horizontally stratified oceanic environments. Although several normal mode models have been developed, the fundamental techniques for accurately and efficiently solving the ...
Wei Liu   +3 more
doaj   +1 more source

Normal Modes and Essential Dynamics

open access: yes, 2008
Normal mode analysis and essential dynamics analysis are powerful methods used for the analysis of collective motions in biomolecules. Their application has led to an appreciation of the importance of protein dynamics in function and the relationship between structure and dynamical behavior.
Hayward, Steven, de Groot, Bert L.
openaire   +4 more sources

Normal-Mode–Vortex Interactions [PDF]

open access: yesPhysical Review Letters, 2002
Standing surface waves that interact with a confined, vertical, vorticity field with zero net circulation are studied both analytically and experimentally. The surface waves are generated by vertical vibration, and constant vorticity injection is achieved by a rotating disk flush mounted in the cell.
Bernal, Roberto   +3 more
openaire   +3 more sources

Higher order normal modes [PDF]

open access: yes, 2020
Normal modes are intimately related to the quadratic approximation of a potential at its hyperbolic equilibria. Here we extend the notion to the case where the Taylor expansion for the potential at a critical point starts with higher order terms, and ...
Gaeta, Giuseppe, Walcher, Sebastian
core   +2 more sources

Solar flares with sustained gamma-ray emission and some characteristics of high-energy proton fluxes

open access: yesSolar-Terrestrial Physics, 2023
The first part of the work presents the results of numerical experiments with the magnetohydrodynamic model of “shallow water” to assess the degree of influence of the magnetic field on the development of instabilities conditioned by a combination of ...
Tomozov V. M.   +2 more
doaj   +1 more source

Estimating Sound Exposure Levels Due to a Broadband Source over Large Areas of Shallow Sea

open access: yesJournal of Marine Science and Engineering, 2022
3D sound propagation modeling in the context of acoustic noise monitoring problems is considered. A technique of effective source spectrum reconstruction from a reference single-hydrophone measurement is discussed, and the procedure of simulation of ...
Denis Manul’chev   +3 more
doaj   +1 more source

On a dispersion curve of a waveguide filled with inhomogeneous substance

open access: yesDiscrete and Continuous Models and Applied Computational Science, 2022
The paper discusses the relationship between the modes traveling along the axis of the waveguide and the standing modes of a cylindrical resonator, and shows how this relationship can be explored using the Sage computer algebra system.
Oleg K. Kroytor, Mikhail D. Malykh
doaj   +1 more source

Determination of the spring constants of the higher flexural modes of microcantilever sensors [PDF]

open access: yes, 2013
Funding: University of St Andrews.A method for the simultaneous calibration of the spring constants of all flexural modes of microcantilevers is presented. It is based on a flow of gas from a microchannel that interacts with the microcantilever.
Hähner, Georg, Parkin, John David
core   +1 more source

Approximation of radial structure of unstable ion-sound modes in rotating magnetized plasma column by eikonal equation

open access: yesDiscrete and Continuous Models and Applied Computational Science, 2022
The problem of the correct asymptotic construction of the radial structure of linearly unstable ion-sound electrostatic eigenmodes is studied. The eigenvalue problem with boundary conditions of the first and second kind (electrodynamic and hydrodynamic ...
Nikita A. Marusov
doaj   +1 more source

Refringence, field theory and normal modes [PDF]

open access: yesClassical and Quantum Gravity, 2002
In a previous paper [gr-qc/0104001; Class. Quant. Grav. 18 (2001) 3595-3610] we have shown that the occurrence of curved spacetime ``effective Lorentzian geometries'' is a generic result of linearizing an arbitrary classical field theory around some non-trivial background configuration.
CARLOS BARCELO   +2 more
openaire   +2 more sources

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