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On the analysis of data emerging in non-linear and complex systems comparison of two x-ray prony spectra

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2015

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Chiminform Data SA

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Abstract

New arguments proving that successive (repeated) measurements have a memory and actually remember each other are presented. The recognition of this peculiarity can change essentially the existing paradigm associated with conventional observation in behavior of different complex systems and lead towards the application of an intermediate model (IM). This IM can provide a very accurate fit of the measured data in terms of the Prony's decomposition. This decomposition, in turn, contains a small set of the fitting parameters relatively to the number of initial data points and allows comparing the measured data in cases where the "best fit" model based on some specific physical principles is absent. As an example, we consider two X-ray diffractometers (defined in paper as A-("cheap') and B-("expensive') that are used after their proper calibration for the measuring of the same substance (corundum a-Al20). The amplitude-frequency response (AFR) obtained in the frame of the Prony's decomposition can be used for comparison of the spectra recorded from (A) and (B) -X-ray diffractometers (XRDs) for calibration and other practical purposes. We prove also that the Fourier decomposition can be adapted to "ideal" experiment without memory while the Prony's decomposition corresponds to real measurement and can be fitted in the frame of the I M in this case. New statistical parameters describing the properties of experimental equipment (irrespective to their internal "filling") are found. The suggested approach is rather general and can be used for calibration and comparison of different complex dynamical systems in practical purposes

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Complex Systems, X-Ray Diffractometer, Fourier And Prony's Decompositions, Data, Treatment Analysis, Ideal Experiment, Intermediate Model, Corundum

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Citation

Nigmatullin, R.R...et al. (2015). On the analysis of data emerging in non-linear and complex systems comparison of two x-ray prony spectra. Revista De Chimie, 66(12), 1929-1937.

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Source

Revista De Chimie

Volume

66

Issue

12

Start Page

1929

End Page

1937