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Sensitivity analysis of oscillatory biological systems with a SVD-based algorithm

Lu, Baoyun and Yue, Hong (2010) Sensitivity analysis of oscillatory biological systems with a SVD-based algorithm. Systemics and Informatics World Network, 10. pp. 85-92. ISSN 2044-7272

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Abstract

There has been a growing body of experimental and computational evidence of oscillations in biological systems, which brings an increasing interest in understanding how such oscillations occur and what are the main factors in controlling these oscillations. Model-based sensitivity analysis can help to investigate the impact of parameter variations on the change of oscillation behaviors quantitatively. To perform sensitivity analysis for systems with limit cycles, a modified method based on singular value decomposition (SVD) is proposed to obtain period sensitivity. The links between the SVD terms and the components of the state sensitivity matrix are thoroughly investigated, based on which the period sensitivity can be readily derived from the largest SVD term with an analytical solution. The improved algorithm keeps the advantages of the former SVD-based method in good convergence and it is easy to implement. A circadian rhythm model is used to present computations of period sensitivity and amplitude sensitivity. The simulation result indicates the efficiency of the method.

Item type: Article
ID code: 35274
Keywords: sensitivity analysis, circadian rhythm , singular value decomposition , amplitude sensitivity, period sensitivity , oscillatory system, Electrical engineering. Electronics Nuclear engineering
Subjects: Technology > Electrical engineering. Electronics Nuclear engineering
Department: Faculty of Engineering > Electronic and Electrical Engineering
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Depositing user: Pure Administrator
Date Deposited: 26 Oct 2011 16:55
Last modified: 17 Jul 2013 11:15
URI: http://strathprints.strath.ac.uk/id/eprint/35274

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