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Detection of limit cycle bifurcations using harmonic balance methods
(World Scientific, 2004-12)
In this paper, bifurcations of limit cycles close to certain singularities of the vector fields are explored using an algorithm based on the harmonic balance method, the theory of nonlinear feedback systems and the monodromy ...
On semi-analytical procedure for detecting limit cycle bifurcations
(World Scientific, 2004-12)
This paper reports some computation of periodic solutions arising from Hopf bifurcations in order to build up a more accurate procedure for semi-analytical approximations to detect limit cycle bifurcations. The approximation ...
On limit cycle approximations in the van der Pol oscillator
(Elsevier Science, 2005-01)
This paper applies bifurcation analysis to the well-known van der Pol oscillator to obtain approximations of its periodic solutions in the nearly sinusoidal regime. A frequency domain method based on harmonic balance ...
Estimation of the plain high-cycle fatigue propagation resistance in steels
(Universidade Federal de São Carlos, 2002-12)
In this work a method to estimate the high cyclic fatigue propagation life of steel specimens under constant loading is presented. This method is based in experimental evidence that the fatigue limit represents the threshold ...
Has water limited our imagination for aridland biogeochemistry?
(Elsevier Science London, 2011-05)
The classic ecological paradigm for deserts, that all processes are controlled by water availability, has limited our imagination for exploring other controls on the cycling of carbon and nutrients in aridland ecosystems. ...
Environmental life cycle assessment as a tool for process optimisation in the utility sector
(Elsevier, 2005-05)
A methodology is presented to calculate the optimum operating conditions of a petrochemical plant utility sector, to minimize the overall Life Cycle Environmental Impact. The battery limits of the system studied are extended ...
Targeting the cardiomyocyte cell cycle for heart regeneration
(Bentham Science Publishers, 2018-08)
Adult mammalian cardiomyocytes (CMs) exhibit limited proliferative capacity, as cell cycle activity leads to an increase in DNA content, but mitosis and cytokinesis are infrequent. This makes the heart highly inefficient ...
High order analysis of the limit cycle of the van der Pol oscillator
(American Institute of Physics, 2018-01)
We have applied the Lindstedt-Poincaré method to study the limit cycle of the van der Pol oscillator, obtaining the numerical coefficients of the series for the period and for the amplitude to order 859. Hermite-Padé ...
Double Hopf bifurcation analysis using frequency domain methods
(Springer, 2005-02)
The dynamic behavior close to a non-resonant double Hopf bifurcation is analyzed via a frequency-domain technique. Approximate expressions of the periodic solutions are computed using the higher order harmonic balance ...
Solar Cycle Propagation, Memory, and Prediction: Insights from a Century of Magnetic Proxies
(IOP Publishing, 2013-04-02)
The solar cycle and its associated magnetic activity are the main drivers behind changes in the interplanetary environment and Earth’s upper atmosphere (commonly referred to as space weather). These changes have a direct ...