Results 11 to 20 of about 3,724,631 (298)

Two-to-one resonant multi-modal dynamics of horizontal/inclined cables. Part II : internal resonance activation, reduced-order models and nonlinear normal modes [PDF]

open access: yes, 2007
Resonant multi-modal dynamics due to planar 2:1 internal resonances in the nonlinear, finite-amplitude, free vibrations of horizontal/inclined cables are parametrically investigated based on the second-order multiple scales solution in Part I [1].
Rega, Giuseppe, Srinil, Narakorn
core   +4 more sources

Difference limen for the Q-factor of room modes [PDF]

open access: yes, 2003
A subjective test study was carried out in order to identify the perceptibility of changes in the Q-factor of room modes. The experimental technique concentrates on the identification of difference limen for three levels of Q-factor referring to modes in
Fazenda, Bruno   +2 more
core   +4 more sources

Study of IR spectra of thiacalix[4]arene with carboxyl and adamantyl groups [PDF]

open access: yesE3S Web of Conferences, 2021
The IR spectra of p-(3-carboxy-1-adamantyl)thiacalix[4]arene (1) were studied. IR spectra of compound 1 do not contain bands of free hydroxyl groups. The νOH value at 3377 cm-1 signifies the formation of an intramolecular H-bond along the lower edge of ...
Furer Victor   +4 more
doaj   +1 more source

On the Effect of Horizontal Refraction Caused by an Anticyclonic Eddy in the Case of Long-Range Sound Propagation in the Sea of Japan

open access: yesJournal of Marine Science and Engineering, 2023
The precision of acoustic ranging and navigation depends on the accuracy of the information about the sound speed field in the area of interest. Large-scale inhomogeneities in the bottom relief and water column can significantly affect the horizontal ...
Mikhail Sorokin   +6 more
doaj   +1 more source

Improving the Performance of Mode-Based Sound Propagation Models by Using Perturbation Formulae for Eigenvalues and Eigenfunctions

open access: yesJournal of Marine Science and Engineering, 2021
Numerous sound propagation models in underwater acoustics are based on the representation of a sound field in the form of a decomposition over normal modes.
Alena Zakharenko   +2 more
doaj   +1 more source

Rayleigh–Bénard Instability of an Ellis Fluid Saturated Porous Channel with an Isoflux Boundary

open access: yesFluids, 2021
The onset of the thermal instability is investigated in a porous channel with plane parallel boundaries saturated by a non–Newtonian shear–thinning fluid and subject to a horizontal throughflow.
Pedro Vayssière Brandão   +2 more
doaj   +1 more source

Experimental and numerical identification of structural modes for engineering education [PDF]

open access: yesFacta Universitatis. Series: Architecture and Civil Engineering, 2014
Development of simple classroom demonstration device and software for visualization of structural normal modes is presented. Device is made of parts of old speaker, controlled with personal computer, where the harmonic motion of solenoid is used
Borković Aleksandar   +4 more
doaj   +1 more source

Mode Normalization

open access: yesCoRR, 2018
Normalization methods are a central building block in the deep learning toolbox. They accelerate and stabilize training, while decreasing the dependence on manually tuned learning rate schedules. When learning from multi-modal distributions, the effectiveness of batch normalization (BN), arguably the most prominent normalization method, is reduced.
Lucas Deecke   +2 more
openaire   +3 more sources

An upper bound for validity limits of asymptotic analytical approaches based on normal form theory [PDF]

open access: yes, 2012
Perturbation methods are routinely used in all fields of applied mathematics where analytical solutions for nonlinear dynamical systems are searched.
LAMARQUE, Claude-Henri   +2 more
core   +1 more source

Nonlinear quasi-normal modes: uniform approximation

open access: yesJournal of High Energy Physics, 2023
Recent works have suggested that nonlinear (quadratic) effects in black hole perturbation theory may be important for describing a black hole ringdown.
Bruno Bucciotti   +3 more
doaj   +1 more source

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