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Instabilités convectives et absolues d'un mélange binaire en convection mixte dans un milieu poreuxJoulin, Annabelle Bois, Pierre-Antoine. Ouarzazi, Mohamed Najib. January 2001 (has links) (PDF)
Thèse de doctorat : Mécanique : Lille 1 : 2001. / Bibliogr. p. 121-126.
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Bifurcation analysis of nonlinear oscillations in power systemsBi̇li̇r, Bülent, January 2000 (has links)
Thesis (Ph. D.)--University of Missouri-Columbia, 2000. / Typescript. Vita. Includes bibliographical references (leaves 158-167). Also available on the Internet.
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Bifurcation analysis of nonlinear oscillations in power systems /Bi̇li̇r, Bülent, January 2000 (has links)
Thesis (Ph. D.)--University of Missouri-Columbia, 2000. / Typescript. Vita. Includes bibliographical references (leaves 158-167). Also available on the Internet.
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Periodic orbit bifurcations and breakup of shearless invariant tori in nontwist systemsFuchss, Kathrin 28 August 2008 (has links)
Not available / text
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Stability and Bifurcation Analysis on Delay Differential EquationsLin, Xihui Unknown Date
No description available.
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Steady State/Hopf Interactions in the Van Der Pol Oscillator with Delayed FeedbackBramburger, Jason 12 July 2013 (has links)
In this thesis we consider the traditional Van der Pol Oscillator with a forcing dependent on a delay in feedback. The delay is taken to be a nonlinear function of both position and velocity which gives rise to many different types of bifurcations. In particular, we study the Zero-Hopf bifurcation that takes place at certain parameter values using methods of centre manifold reduction of DDEs and normal form theory. We present numerical simulations that have been accurately predicted by the phase portraits in the Zero-Hopf bifurcation to confirm our numerical results and provide a physical understanding of the oscillator with the delay in feedback.
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A numerical study of the effects of multiplicative noise on a supercritical delay induced Hopf bifurcation in a gene expression model /Mondraǵon Palomino, Octavio. January 2006 (has links)
In the context of gene expression, we proposed a nonlinear stochastic delay differential equation as a mathematical model to study the effects of extrinsic noise on a delay induced Hopf bifurcation. We envisaged its direct numerical resolution. Following the example of the noisy oscillator, we first solved a linearized version of the equation, close to the Hopf bifurcation. The numerical scheme used is a combination of a standard algorithm to solve a deterministic delay differential equation and a stochastic Euler scheme. From our calculations we verified that the deterministic behaviour is fully recovered. For the stochastic case, we found that our solution is qualitatively accurate, in the sense that the noise induced shift in the critical value a, follows the trend the known analytic results predict. However, our numerical solution systematically overestimates the value of the shift. This is explained because the accuracy in the numerical estimation of the decay rate of a solution towards the stationary state value is a function of the control parameter a. We believe the mismatch between the numerical solution and the analytic results is due to a lack of convergence of our scheme, rather than to lack of accuracy. As our numerical scheme is an hybrid, the convergence problem can be improved, both at the deterministic and at the stochastic parts of the scheme. In this work we left our numerical results on the nonlinear case out, because before proceeding to the investigation of the nonlinear equation, the convergence must be assured in the linear case.
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磁気浮上制御系の非線形強制振動 (調和共振の分岐現象と超調波共振の発生)井上, 剛志, INOUE, Tsuyoshi, 石田, 幸男, ISHIDA, Yukio, 池田, 陽介, IKEDA, Yosuke 06 1900 (has links)
No description available.
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A free boundary problem modelling zoning in rocks /Stamic̆ar, Robert Nikola. January 1998 (has links)
Thesis (Ph.D.) -- McMaster University, 1998. / Includes bibliographical references. Also available via World Wide Web.
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Toeplitz Jacobian matrix and nonlinear dynamical systems /Ge, Tong. January 1996 (has links)
Thesis (Ph. D.)--University of Hong Kong, 1996. / Includes bibliographical references (leaf 118-125).
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