scholarly journals A Recursive Coupling-Decoupling Approach to Improve Experimental Frequency Based Substructuring Results

2017 ◽  
pp. 239-253
Author(s):  
R. Cumbo ◽  
S. Manzato ◽  
G. Coppotelli ◽  
A. Fregolent ◽  
W. D’Ambrogio
Keyword(s):  
Experimental Frequency ◽  
Decoupling Approach

The decoupling approach to binomial pricing of multi-asset options

2009 ◽  
Vol 12 (3) ◽  
pp. 1-30 ◽  
Author(s):  
Ralf Korn ◽  
Stefanie Müller
Keyword(s):  
Decoupling Approach

Analytical representation of hydrophone complex frequency response

2021 ◽  
pp. 16-20
Author(s):  
Alexander E. Isaev
Keyword(s):  
Frequency Response ◽  
Complex Variable ◽  
Active Element ◽  
Analytical Representation ◽  
Complex Frequency ◽  
Minimum Phase ◽  
Experimental Frequency ◽  
Resonance Properties ◽  
Fractional Rational Function ◽  
Sound Diffraction

The problem of analytical representation of hydrophone complex frequency response based on a model consisting of an advance line and a minimum-phase part, which describing the effect of sound diffraction and resonance properties of an active element, is considered. Algorithms are proposed for approximating the hydrophone complex frequency response by a fractional-rational function of the complex variable according to the data of the hydrophone amplitude-frequency and/or phasefrequency responses. Examples of the application of these algorithms for processing experimental frequency characteristics of hydrophones are given.

scholarly journals Cantilever Beam Metastructure for Active Broadband Vibration Suppression

2020 ◽  
Author(s):  
Ratiba Fatma Ghachi ◽  
Wael Alnahhal ◽  
Osama Abdeljaber
Keyword(s):  
Cantilever Beam ◽  
Natural Frequencies ◽  
Vibration Suppression ◽  
Research Work ◽  
Peak Frequency ◽  
Experimental Frequency ◽  
Transmission Frequency ◽  
Vibration Attenuation ◽  
The Masses ◽  
Zigzag Structure

This paper presents a beam structure of a new metamaterial-inspired dynamic vibration attenuation system. The proposed experimental research presents a designed cantilevered zigzag structure that can have natural frequencies orders of magnitude lower than a simple cantilever of the same scale. The proposed vibration attenuation system relies on the masses places on the zigzag structure thus changing the dynamic response of the system. The zigzag plates are integrated into the host structure namely a cantilever beam with openings, forming what is referred to here as a metastructure. Experimental frequency response function results are shown comparing the response of the structure to depending on the natural frequency of the zigzag structures. Results show that the distributed inserts in the system can split the peak response of the structure into two separate peaks rendering the peak frequency a low transmission frequency. These preliminary results provide a view of the potential of research work on active-controlled structures and nonlinear insert-structure interaction for vibration attenuation.

scholarly journals A Decoupling Approach to the Quantum Capacity

2008 ◽  
Vol 15 (01) ◽  
pp. 7-19 ◽  
Author(s):  
Patrick Hayden ◽  
Michał Horodecki ◽  
Andreas Winter ◽  
Jon Yard
Keyword(s):  
Short Proof ◽  
Achievable Rate ◽  
Projective Measurement ◽  
Tensor Power ◽  
Quantum Capacity ◽  
Decoupling Approach ◽  
Coherent Information ◽  
Random Codes ◽  
Channel Environment ◽  
Noisy Quantum Channel

We give a short proof that the coherent information is an achievable rate for the transmission of quantum information through a noisy quantum channel. Our method is to produce random codes by performing a unitarily covariant projective measurement on a typical subspace of a tensor power state. We show that, provided the rank of each measurement operator is sufficiently small, the transmitted data will, with high probability, be decoupled from the channel environment. We also show that our construction leads to random codes whose average input is close to a product state and outline a modification yielding unitarily invariant ensembles of maximally entangled codes.

A Decoupling Approach to Design Observers for Polytopic Takagi-Sugeno Models Subject to Unknown Inputs

2018 ◽  
Author(s):  
Souad Bezzaoucha Rebai ◽  
Holger Voos ◽  
Jorge A. Davila ◽  
Francisco Javier Bejarano
Keyword(s):  
Unknown Inputs ◽  
Decoupling Approach ◽  
Takagi Sugeno
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