Results 31 to 40 of about 8,335,626 (297)

Effects of pre-stretch, compressibility and material constitution on the period-doubling secondary bifurcation of a film/substrate bilayer

open access: yesInternational Journal of Non-Linear Mechanics, 2019
We refine a previously proposed semi-analytical method, and use it to study the effects of pre-stretch, compressibility and material constitution on the period-doubling secondary bifurcation of a uni-axially compressed film/substrate bilayer structure ...
Z. Cai, Yibin Fu
semanticscholar   +1 more source

Estimation and prediction of doubling time for COVID-19 epidemic in Bangladesh: a study of first 14 month’s daily confirmed new cases and deaths

open access: yesGlobal Biosecurity, 2021
'Background:' The doubling time is a reliable indicator to estimate the rate at which the pandemic is spreading. We evaluated and predicted the doubling time for the daily COVID-19 cases and deaths in Bangladesh.
Mohammad Farhadul Haque   +6 more
doaj   +1 more source

Chaos and bifurcations in chaotic maps with parameter q: Numerical and analytical studies

open access: yesNonlinear Analysis, 2015
In this paper, a class of chaotic maps with parameter q are introduced and bifurcations and chaos in proposed maps are numerical and analytical studied.
Hao Zhang, Xing Yuan Wang, Xiao Hui Lin
doaj   +1 more source

Periods of double EPW-sextics [PDF]

open access: yesMathematische Zeitschrift, 2015
We study the indeterminacy locus of the period map for double EPW-sextics. We recall that double EPW-sextics are parametrized by lagrangian subspaces of the third wedge-product of a 6-dimensional complex vector-space. The indeterminacy locus is contained in the set of lagrangians containing a decomposable vector.
openaire   +4 more sources

Lacunarity and period-doubling [PDF]

open access: yesDynamical Systems, 2013
We show that the deviation from power laws of the scaling of chaotic measures, such as Lyapunov exponents and topological entropy, is periodic in the logarithm of the distance from the accumulation of period doubling. Moreover, this periodic function is asymptotically universal for each measure (for functions in the appropriate universality class ...
Glendinning, Paul, Smith, Leonard A.
openaire   +1 more source

Replication of period-doubling route to chaos in impulsive systems

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2019
In this study, we investigate the dynamics of impulsive systems driven by a chaotic system. It is shown that the response impulsive system replicates the sensitivity and the period-doubling cascade of the drive.
Mehmet Onur Fen, Fatma Tokmak Fen
doaj   +1 more source

Kepler photometry of RRc stars: peculiar double-mode pulsations and period doubling [PDF]

open access: yes, 2014
We present the analysis of four first overtone RR Lyrae stars observed with the Kepler space telescope, based on data obtained over nearly 2.5yr. All four stars are found to be multiperiodic.
P. Moskalik   +14 more
semanticscholar   +1 more source

Instabilities and Chaos in Semiconductor Laser With Optical Injection and Feedback

open access: yesمجلة علوم ذي قار, 2019
A numerical has been under taken to study the effects of the optical injection and the optical feedback on the nonlinear dynamical behavior of the semiconductor laser using a simple model, based on the coupled electric field and population inversion rate
I. A. Al – Saidi   +1 more
doaj   +4 more sources

Period-doubling route to chaos in perturbed period-one nonlinear dynamics

open access: yesResults in Physics
An all-optical method is proposed for destabilizing the period-one (P1) nonlinear dynamic state using a system of three cascaded semiconductor lasers across two optical injection stages.
Mohammad AlMulla
doaj   +1 more source

Period-doubling and Neimark–Sacker bifurcations of plant–herbivore models

open access: yesAdvances in Difference Equations, 2019
The interaction between plants and herbivores plays a vital role for understanding community dynamics and ecosystem function given that they are the critical link between primary production and food webs.
E. M. Elsayed, Qamar Din
doaj   +1 more source

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