Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 5 of 5 for “"Quasi-periodicity"”.
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Analysis of a Nonlinear vibration absorber for vibration control in a hand-held impact machine
… phenomena such as unstable periodic solutions, quasi- periodicity, chaos, and grazing. Frequency response analyses demonstrate the superiority of the cubic absorber over its linear counterpart, with notable improvements in performance when combined with an inerter. Parametric studies further …
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Trapped-modes, slow light and collective resonances in metamaterials
… collective effects are studied in quasicrystal hole arrays and it is demonstrated that non-resonant scatterers can lead to strong lattice resonances and extraordinary transmission even in the case of quasi-periodicity. Microwave and optical quasicrystal patterns exhibit similar …
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Dynamic weakening and trained memory in avalanche dynamics from high-entropy alloys to neurons and spin systems
… runaways, characteristic length scales, and quasi-periodicity. Such deviations highlight the role of additional mechanisms, particularly dynamic weakening and healing, which temporarily modify local thresholds during and after avalanches. This thesis investigates how weakening and healing …
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Wave transport in parity-time symmetric, time-varying, and quasi-periodic systems
… symmetric systems, time-varying systems and quasi-periodic systems. These newly developed material platforms have been enabling many exotic wave-matter interaction phenomena unavailable in nature. In this context, I investigated a series of wave transport and scattering phenomena in …
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Self-consistent dynamical and radiative models of low-luminosity active galactic nuclei
… that decay in time, in sharp contrast to the quasi-steady state that seems to pertain to systems like Sgr A*. To mitigate this problem, we derive and numerically solve the equations of one dimensional relativistic viscous disk evolution and use these results to motivate a smoothly varying …