Effects of time delays on biological feedback systems and electromagnetic field exposures

2018 ◽  
Vol 39 (3) ◽  
pp. 249-252 ◽  
Author(s):  
Frank Barnes ◽  
Sahithi Kandala
Keyword(s):  
Electromagnetic Field ◽  
Time Delays ◽  
Biological Feedback ◽  
Feedback Systems

Dynamics of non-linear feedback systems with short time-delays

2001 ◽  
Vol 195 (1-4) ◽  
pp. 187-196 ◽  
Author(s):  
Vladimir S Udaltsov ◽  
Jean-Pierre Goedgebuer ◽  
Laurent Larger ◽  
William T Rhodes
Keyword(s):  
Time Delays ◽  
Linear Feedback ◽  
Feedback Systems ◽  
Non Linear ◽  
Short Time

Data Processing in Bifurcation Analysis of Maps with Time-Delays in the Frequency Domain

2014 ◽  
Vol 685 ◽  
pp. 634-637
Author(s):  
Li Zeng ◽  
Jun Wei Wang
Keyword(s):  
Data Processing ◽  
Frequency Domain ◽  
Time Delays ◽  
Period Doubling ◽  
Feedback Systems ◽  
Bifurcation Solution ◽  
Nonlinear Maps ◽  
The Stability ◽  
Frequency Domain Approach ◽  
Period Doubling Bifurcations

A unified frequency-domain approach to analyze the NS (Neimark-Sacker) bifurcations and the period-doubling bifurcations of nonlinear maps with time-delays in the linear feed-forward term is presented. The technique relies on the HBA (harmonic balance approximation, a very important method in data processing ) and feedback systems theory. The expressions of the bifurcation solution and the stability are derived.

scholarly journals CoRa –A general approach for quantifying biological feedback control

2020 ◽  
Author(s):  
Mariana Gómez-Schiavon ◽  
Hana El-Samad
Keyword(s):  
Feedback Control ◽  
Control Systems ◽  
General Framework ◽  
Control Mechanism ◽  
Biological Molecules ◽  
Control Mechanisms ◽  
Biological Processes ◽  
Biological Feedback ◽  
Feedback Systems ◽  
Feedback Control Systems

AbstractFeedback control is a fundamental underpinning of life, underlying homeostasis of biological processes at every scale of organization, from cells to ecosystems. The ability to evaluate the contribution and limitations of feedback control mechanisms operating in cells is a critical step for understanding and ultimately designing feedback control systems with biological molecules. Here, we introduce CoRa –or ControlRatio–, a general framework that quantifies the contribution of a biological feedback control mechanism to adaptation using a mathematically controlled comparison to an identical system that does not contain the feedback. CoRa provides a simple and intuitive metric with broad applicability to biological feedback systems.

Effects of time delays on the dynamics of feedback systems

Equadiff 99 ◽  
2000 ◽  
pp. 257-266
Author(s):  
Jack K. Hale ◽  
Sjoerd M. Verduyn Lunel
Keyword(s):  
Time Delays ◽  
Feedback Systems
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