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Dielectric Relaxation in Biological SystemsPhysical Principles, Methods, and Applications$
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Valerica Raicu and Yuri Feldman

Print publication date: 2015

Print ISBN-13: 9780199686513

Published to Oxford Scholarship Online: August 2015

DOI: 10.1093/acprof:oso/9780199686513.001.0001

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Analysis of Experimental Data and Fitting Problems

Analysis of Experimental Data and Fitting Problems

(p.170) 2.3 Analysis of Experimental Data and Fitting Problems
Dielectric Relaxation in Biological Systems

Anna Greenbaum-Gutina

Paul Ben Ishai

Yuri Feldman

Oxford University Press

This chapter describes the main principles of dielectric spectra analysis, including different dielectric data presentations and processing techniques. Three main crucial fitting problems of quantification of the measured data are discussed: selection of an appropriate model function; formulation of the correct fit criteria; and estimation of model parameters as a smooth function of an external thermodynamic value. The use is also presented of derivative analysis and the Hilbert transform of the dielectric permittivity data based on Kramers–Krönig relationships for dc conductivity evaluation.

Keywords:   data representation, data analysis, model functions, electrode polarization correction, parameter estimation, Hilbert transform, dc conductivity

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