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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 339 for “"Dissipative"”.
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Dissipative Lipschitz dynamics
… of the system when the dynamic satisfies a dissipative Lipschitz condition. We show that when the dynamic is almost upper semicontinuous and satisfies the dissipative Lipschitz property, these conditions can be expressed in terms of approximate Hamilton-Jacobi inequalities, which subsumes …
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Dissipative Matsubara Dynamics
… functions. This was achieved by developing dissipative Matsubara dynamics — a way of implicitly including a bath of harmonic oscillators in a Matsubara dynamics simulation.We first show that the fact that the bath is harmonic allows its inclusion in the simulation without exacerbating the …
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Dissipative urban space
… guiding and deterministic environments. Dissipative urban space aims at a rewardingly rich public experience by embodying. yet not determining. both regulated and "unregulated" physical patterns.
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Linear Discrete-time Dissipative Systems
… of Lyapunov. This thesis concerns discrete-time dissipative systems, and its main goal is to present versions of the discrete-time positive real and discrete-time bounded real lemmas that do not require the assumptions of controllability and observability, and in fact require no assumptions at …
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Quantum Control in Dissipative Systems
Submitted by Meng Tao (mengtao2@illinois.edu) on 2012-10-11T20:37:39Z No. of bitstreams: 1 Dong_Ke.pdf: 1438135 bytes, checksum: de88ac169d3325e5c5a1fa36ff31b681 (MD5)
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WAVEPACKET APPROACHES TO DISSIPATIVE QUANTUM DYNAMICS
… and the corresponding dynamics is generally dissipative. In open quantum systems the wavefunction description fails because of a lack of the complete knowledge of the state. It is then necessary to switch to the density matrix description, which contains all the information. The system …
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Dissipative Quantum Systems and Flow Equations
This work investigates dissipative quantum systems by means of Flow Equations for Hamiltonians. We start with the Spin-Boson Model including one bosonic mode. The Flow Equation results for the ground-state energy and for the transformation of the Pauli spin matrices are compared with the …
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Dissipative systems theory : analysis and synthesis
… has renewed interest in the classical concept of dissipative systems. In particular, in various finite gain or passivity system synthesis methods in the literature, one studies a relevant dissipation inequality and looks for an appropriate solution to it. When such a solution exists, one then …
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Dissipative systems theory : analysis and synthesis
… has renewed interest in the classical concept of dissipative systems. In particular, in various finite gain or passivity system synthesis methods in the literature, one studies a relevant dissipation inequality and looks for an appropriate solution to it. When such a solution exists, one then …
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An action principle for dissipative fluid dynamics
Fluid dynamics is the universal theory of low-energy excitations around equilibrium states, governing the physics of long-lived modes associated with conserved charges. Historically, fluid dynamics has been formulated at the level of equations of motion, in terms of a local fluid velocity and …
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The ballast resistor : a simple dissipative structure.
Thesis. 1976. Ph.D.--Massachusetts Institute of Technology. Dept of Physics.
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Selective excitation of adsorbate vibrations on dissipative surfaces
… treated as multi-dimensional oscillators on dissipative surfaces, has been simulated within the framework of open-system density matrix theory. Not only potential-mediated, inter-mode coupling poses an obstacle to selective excitation but also the coupling of the adsorbate ("system") modes to …
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Effects of dissipative environments on some quantum systems
… the Landau-Zener level crossing problem with a dissipative environment is presented. Finally, in chapter five I propose some questions that need further theoretical consideration.
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Effects of dissipative environments on some quantum systems
The properties of a system coupled to an environment can be dramatically changed compared to those of the isolated case. In this thesis I present a theoretical study of environmental influence on the following physical phenomena: the persistent current of a metallic ring, the escape rate of an …
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Nonlinear dissipative dynamics of optomechanical and laser arrays
In this thesis, we study nonlinear dissipative dynamics of two different systems: (i) synthetic dynamical gauge fields for photons in optomechanical arrays and (ii) laser arrays with a topologically nontrivial structure. The chosen models are relevant to state-of-the-art optomechanical experiments …
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Rheological characterization of polymers via dissipative particle dynamics
Dissipative particle dynamics (DPD) is a mesoscale simulation technique which uses soft potentials between large particles to reproduce liquid behavior. In form, DPD is similar to molecular dynamics, as all matter is represented by point particles which interact with each other via, pairwise …
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On variational principles for dissipative networks and systems
Dynamical equations for dissipative systems are in general not derivable from a Lagrangian, but variational principles can nevertheless be formulated using auxiliary variables or a multiplying factor. Both methods are examined, generalized, and applied to some dissipative systems. Composite …
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On the boundary conditions for dissipative particle dynamics (DPD)
Dissipative Particle Dynamics is a mesoscale simulation technique that is widely used in simulation of complex fluids. This method simulates the fluid in the scales between microscopic and macroscopic scales. In this thesis, we aim at developing a new wall model in which there is virtually no …
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The acoustic modelling of dissipative elements in automotive exhausts
… modelling and experimental testing of both dissipative silencers and catalytic converters is reported here, although dissipative silencers are of primary interest. The models examined are formulated with a view to introducing them into commercial software aimed at the acoustic design of …
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A dissipative wave packet approach for unified nonlinear acoustics
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1994.
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