MODIFICATION OF THE EXTENDED BOUNDARY CONDITION METHOD FOR MODELS OF MAN AT AND ABOVE THE RESONANT FREQUENCY
Authors not listed
Researchers developed a FORTRAN program for inversion of ill-conditioned complex matrices that appeared significantly more stable than standard matrix inversion procedures.
Plain English Summary
The extended-boundary-condition method (EBCM) has been used with prolate spheroid models of man and animals to generate much of the theoretical data used in the current dosimetry handbook. When large a/b ratios (typical of man) or large magnitude permittivities are used with the EBCM, the matrix becomes ill-conditioned, thus disallowing calculations above a certain maximum frequency. Researchers followed the algorithm of Golub and Reinsch to develop a FORTRAN program for inversion of ill-conditioned complex matrices, which appeared significantly more stable than standard matrix inversion procedures.
Why This Matters
Solutions for prolate spheroidal man models are restricted to frequencies somewhat below whole-body resonance, and an earlier attempt to solve the problem of ill-conditioning was not completely successful. The standard mathematical procedure for inverting an ill-conditioned matrix is singular value decomposition, such as with Householder transformations. The researchers planned to present results showing how much of an extension in frequency range is allowed for dosimetry calculations with man and animals. They also aimed to present a description of a Meta-EBCM method especially suitable for use with models of man at and above the resonant frequency.
Show BibTeX
@article{modification_of_the_extended_boundary_condition_method_for_models_of_man_at_and__g5477,
author = {Unknown},
title = {MODIFICATION OF THE EXTENDED BOUNDARY CONDITION METHOD FOR MODELS OF MAN AT AND ABOVE THE RESONANT FREQUENCY},
year = {n.d.},
}