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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 1:31 |
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Conference: Bucharest University Faculty of Physics 2001 Meeting
Section: Biophysics; Medical Physics
Title:
COMPUTER SIMULATION OF COMPLEX EPR SPECTRA BY USING NEURAL NETWORKS
Authors:
Ileana Andrei, O.G. Duliu
Affiliation:
Department of Biophysics, Faculty of Physics, Bucharest-Magurele, POBox MG 11, ROMANIA
E-mail
Keywords:
Abstract:
A neural network has been used to simulate a complex experimental EPR spectrum of low dose irradiated human tooth enamel. For this purpose a neural "forward" type network consisting of a single layer of hidden neurons has been designed. The number of neurons was allowed to change freely from one type of spectrum to another, but remained fixed for the same kind of spectrum. A "back-propagation" algorithm was used. Simulated spectra present a great similarity with the experimental ones. This fact permitted to determine spectrum parameters as giromagnetic factor and line half-width. Numerical values of these parameters were in good agreement with those previously reported in literature.
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