Results 241 to 250 of about 10,893 (284)

A Differential Quadrature based procedure for parameter identification

Applied Mathematics and Computation, 2016
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Maria A. De Rosa, Maria Lippiello, Ram Jiwari, Stefania Tomasiello   +3 more
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Quadratures for Implicit Differential Equations

SIAM Journal on Numerical Analysis, 1970
Quadrature methods are used to obtain numerical solutions of certain systems of implicit differential equations. Development of the methods leads to an extension of an existence theorem for implicit differential equations. Several examples indicate the range of application of the methods.
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A new differential quadrature methodology for beam analysis and the associated differential quadrature element method

Computer Methods in Applied Mechanics and Engineering, 2002
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Karami, G., Malekzadeh, P.
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Advanced Differential Quadrature Methods

, 2009
Modern Tools to Perform Numerical DifferentiationThe original direct differential quadrature (DQ) method has been known to fail for problems with strong nonlinearity and material discontinuity as well as for problems involving singularity, irregularity ...
Zhang, Yingyan (R16062), Zong, Zhi, Zhang, Yingyan   +2 more
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Triangular differential quadrature

Communications in Numerical Methods in Engineering, 2000
Summary: We propose a triangular differential quadrature method, where the partial derivative of a function with respect to space variables at a given point is approximated by a weighted linear summation of function values at all discrete points in a triangular domain.
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THE MODIFIED DIFFERENTIAL QUADRATURES AND THEIR APPLICATIONS

Chemical Engineering Communications, 1993
Abstract In this paper, a number of modifications are instituted in implementing the quadrature method for solving chemical engineering problems with semi-infinite domains and/or steep gradients. This improvement in the curve-fitting ability of differential quadratures is achieved by adopting trial functions of forms other than the polynomials.
CHUEI-TIN CHANG†, CHII-SHANG TSAI, TIEN-TSAI LIN   +2 more
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Differential Encoding for Quadrature-Amplitude Modulation

2010 IEEE 71st Vehicular Technology Conference, 2010
In this paper, we propose a novel differential encoder for QAM (quadrature-amplitude modulation), by a look-up table instead of a rule. Using a table for differential encoding has the advantages of both low complexity and good error performance. We propose algorithms to construct the table for maximizing the minimum noncoherent distance and minimizing ...
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Localized triangular differential quadrature

Numerical Methods for Partial Differential Equations, 2003
AbstractA localized triangular differential quadrature method is introduced in this article. Not only is the existing limitation on the approximation order in the triangular differential quadrature eliminated but also the convergent rate is enhanced in the new method.
Zhong, Hongzhi, Hua, Yongxia, He, Yuhong
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THE GENERALIZED DIFFERENTIAL QUADRATURE RULE FOR INITIAL-VALUE DIFFERENTIAL EQUATIONS

Journal of Sound and Vibration, 2000
Summary: The generalized differential quadrature rule (GDQR) proposed recently by the authors is applied here to solve initial-value differential equations of the 2nd to 4th order. Differential quadrature expressions are derived based on the GDQR for these equations. The Hermite interpolation functions are used as trial functions to obtain the explicit
Wu, T.Y., Liu, G.R.
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The generalized differential quadrature rule for fourth‐order differential equations

International Journal for Numerical Methods in Engineering, 2001
AbstractThe generalized differential quadrature rule (GDQR) proposed here is aimed at solving high‐order differential equations. The improved approach is completely exempted from the use of the existing δ‐point technique by applying multiple conditions in a rigorous manner.
Wu, T.Y., Liu, G.R.
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