Results 31 to 40 of about 14,670,895 (289)
Planar quadrature RF transceiver design using common-mode differential-mode (CMDM) transmission line method for 7T MR imaging. [PDF]
PLoS ONE, 2013 The use of quadrature RF magnetic fields has been demonstrated to be an efficient method to reduce transmit power and to increase the signal-to-noise (SNR) in magnetic resonance (MR) imaging. The goal of this project was to develop a new method using the
Ye Li +4 more
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Reducing the computational requirements of the differential quadrature method
Numerical Methods for Partial Differential Equations, 1996 This paper shows that the weighting coefficient matrices of the differential quadrature method (DQM) are centrosymmetric or skew-centrosymmetric if the grid spacings are symmetric irrespective of whether they are equal or unequal. A new skew centrosymmetric matrix is also discussed.
W. Chen, Xinwei Wang, Yongxi Yu
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Computer Assisted Methods in Engineering and Science, 2022 The paper deals with the application of the differential quadrature method based on a piecewise polynomial to the nonlinear vibration analysis of beams. The initial-boundary-value problem is solved to study the computational stability of the method. The
Artur Krowiak
doaj
Axioms, 2022 We propose a differential quadrature method (DQM) based on cubic hyperbolic B-spline basis functions for computing 3D wave equations. This method converts the problem into a system of ODEs.
Mohammad Tamsir +2 more
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Analysis of Sandwich Plates by Generalized Differential Quadrature Method [PDF]
Mathematical Problems in Engineering, 2013 We combine a layer-wise formulation and a generalized differential quadrature technique for predicting the static deformations and free vibration behaviour of sandwich plates. Through numerical experiments, the capability and efficiency of this strong-form technique for static and vibration problems are demonstrated, and the numerical accuracy and ...
A. J. M. Ferreira +4 more
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Advanced Materials Technologies, EarlyView.Electric‐field‐assisted spin coating is introduced as a wet‐film processing route for guiding perovskite crystallization. A transient perpendicular field produces distinct structural maxima rather than monotonic grain growth: largest scanning electron microscopy (SEM)‐derived grain size at nominal 2 kV cm−1${\rm cm}^{-1}$, largest X‐ray diffraction ...
James R. Zelaya, Gary C. Tepper
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Free Vibration Analisys Of Thin Functionally Graded Materials Plates On Winkler Elastic Foundation By Differential Quadrature Element Method [PDF]
مجله مدل سازی در مهندسی, 2017 In this study, a numerical approach to evaluate and predict the natural frequencies of a functional graded material plate resting on single-parameter elastic foundation, has been presented.
amirheshmat khedmati bazkiaei +2 more
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Advanced Science, EarlyView.This paper reveals internal resonance mismatch‐controlled dissipative bistability collapse in a coupled micromechanical resonator. Tuning δIR changes both internal‐mode amplitude and phase‐dependent feedback. For negative mismatch, Duffing bistability survives.
Jianlin Chen +4 more
wiley +1 more source
Application of the quadrature-difference method for solving Fredholm integro-differential equations [PDF]
, 2015 Application of the quadrature-difference method for solving Fredholm integro-differential equations (FIDEs) is presented in this paper. The FIDEs will be discretized by using the combinations of Simpsons quadrature rule with finite difference. The method
C. Jalius +3 more
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Multi‐Dimensional Physical‐Layer Security via Digitally Mediated Space–Time Modulation
Advanced Science, EarlyView.Digitally mediated space–time modulation moves radiation control beyond hardware‐bound switching. Multiple information‐bearing and masking waveforms are jointly synthesized at baseband and coherently coupled to simple periodic time modulation, enabling programmable, independently directed multi‐beam radiation without increasing switching‐state ...
Kejin Chen +8 more
wiley +1 more source