### Abstract

Language | English |
---|---|

Article number | 1 |

Pages | 1065-1073 |

Number of pages | 9 |

Journal | Acta Automatica Sinica |

Volume | 38 |

Issue number | 7 |

Early online date | 1 Jul 2010 |

Publication status | Published - Jul 2012 |

### Fingerprint

### Keywords

- biological oscillators
- sensitivity analysis
- phase sensitivity
- period sensitivity

### Cite this

*Acta Automatica Sinica*,

*38*(7), 1065-1073. [1].

}

*Acta Automatica Sinica*, vol. 38, no. 7, 1, pp. 1065-1073.

**Developing objective sensitivity analysis of periodic systems: case studies of biological oscillators.** / Lu, Baoyun; Yue, Hong.

Research output: Contribution to journal › Article

TY - JOUR

T1 - Developing objective sensitivity analysis of periodic systems: case studies of biological oscillators

AU - Lu, Baoyun

AU - Yue, Hong

PY - 2012/7

Y1 - 2012/7

N2 - Sensitivity analysis is a powerful tool in investigating the impact of parameter variations on the change of system behaviours quantitatively. For a periodic system, sensitivity analysis is a challenging problem since the standard sensitivity metrics grow unbounded when time tends to infinity. Objective sensitivity analyses using various oscillation features such as period, phase, amplitude, etc. are therefore needed to circumvent this problem. In this work, a new concept of basal state sensitivity is proposed based on which a phase sensitivity calculation is derived. The improved period sensitivity calculation following an existing algorithm using singular value decomposition (SVD) is also presented, which provides a simple calculation for the basal state sensitivity. These new sensitivity calculations are developed with the purpose to analyse biological oscillators since there is an increasing interest in understanding how oscillations occur and what the main controlling factors are following a growing experimental and computational evidence of oscillations in biological systems. The improved calculation of period sensitivity is shown to be consistent with the previous methods through a well studied circadian rhythm model. The calculation of new objective sensitivities are also testified by the same circadian rhythm model as well as an oscillatory signal transduction pathway model, which further illustrates the efficiency of this approach in handling complex biological oscillators in the presence of reaction conservations.

AB - Sensitivity analysis is a powerful tool in investigating the impact of parameter variations on the change of system behaviours quantitatively. For a periodic system, sensitivity analysis is a challenging problem since the standard sensitivity metrics grow unbounded when time tends to infinity. Objective sensitivity analyses using various oscillation features such as period, phase, amplitude, etc. are therefore needed to circumvent this problem. In this work, a new concept of basal state sensitivity is proposed based on which a phase sensitivity calculation is derived. The improved period sensitivity calculation following an existing algorithm using singular value decomposition (SVD) is also presented, which provides a simple calculation for the basal state sensitivity. These new sensitivity calculations are developed with the purpose to analyse biological oscillators since there is an increasing interest in understanding how oscillations occur and what the main controlling factors are following a growing experimental and computational evidence of oscillations in biological systems. The improved calculation of period sensitivity is shown to be consistent with the previous methods through a well studied circadian rhythm model. The calculation of new objective sensitivities are also testified by the same circadian rhythm model as well as an oscillatory signal transduction pathway model, which further illustrates the efficiency of this approach in handling complex biological oscillators in the presence of reaction conservations.

KW - biological oscillators

KW - sensitivity analysis

KW - phase sensitivity

KW - period sensitivity

UR - http://www.sciencedirect.com/science/journal/18741029

M3 - Article

VL - 38

SP - 1065

EP - 1073

JO - Acta Automatica Sinica

T2 - Acta Automatica Sinica

JF - Acta Automatica Sinica

SN - 1874-1029

IS - 7

M1 - 1

ER -