Results 181 to 190 of about 11,888 (213)

Multidimensional Rational Approximations With an Application to Linear Transforms

open access: closedIEEE Transactions on Signal Processing, 2004
We discuss two new algorithms for the calculation of simultaneous rational approximations with specific computational characteristics. These approximations are used for efficient calculation of linear transforms. We develop an application in compression using the discrete cosine transform (DCT); however, the methods are also applicable to other integer
J.Q. Trelewicz, T.J. Trenary
openaire   +2 more sources

A Computational Analysis of Convex Combination Models for Multidimensional Piecewise-Linear Approximation in Oil Production Optimization

open access: closedIFAC Proceedings Volumes, 2012
Abstract The lift-gas allocation problem with pressure-drop constraints and well-separator routing is a mixed-integer nonlinear program considerably hard to solve. To this end, a mixed-integer linear programming formulation was developed by multidimensional piecewise-linearization of pressure drop functions using standard (CC) and logarithmic (Log ...
Thiago L Silva   +2 more
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Taylor approximations of multidimensional linear differential systems

open access: closedInternational Journal of Control, 2015
ABSTRACTThe Taylor approximations of a multidimensional linear differential system are of importance as they contain a complete information about it. It is shown that in order to construct them it is sufficient to truncate the exponential trajectories only.
Vakhtang Lomadze
openaire   +2 more sources

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