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 20 of 45 for “"scaling behavior"”.
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Bandwidth scaling behavior in wireless systems : theory, experimentation, and performance analysis
… However, present analyses do not capture the behavior of systems in these channels as the bandwidth changes. This thesis: describes the development of an automated measurement apparatus capable of characterizing wideband channels up to 16 GHz; formulates a framework for evaluating the …
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The scaling behavior of the entanglement entropy in 2+1 dimensional critical systems
… been well studied and known to have a universal scaling form that gives information about the underlying critical system. While the case for 1+1 dimensional critical systems has been well studied, the situation in higher dimensional systems is less clear. In this work, I show that the …
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Path Integral Monte Carlo Simulations of Helium: From Superfluid Droplets to Quantum Crystals
… of temperatures and densities, and compared the scaling behavior with the predictions of harmonic theory. The first non-Gaussian contribution to the density distribution was calculated.
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Extreme rainfall, flood scaling and flood policy options in the United States
… have been shown to exhibit scale invariance behavior over a range of space and time scales. Although various approaches have been taken to investigate and model the various scaling aspects of rainfall and floods, little theoretical work has been done on the relation between the scaling of …
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Exclusive photoproduction of charged pions in hydrogen and deuterium from 1 to 6 GeV
… interesting features. The data exhibit a global scaling behavior for both [pi]⁻ and [pi]⁺ photoproduction at high energies and high transverse momenta, consistent with the constituent counting rule and the existing [pi]⁺ photoproduction data. This implies that the quark-gluon degrees of freedom …
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Recobrimentos no espaço hiperbólico e percolação na árvore binária estendida
… studies are needed in order to assess its true scaling behavior.
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Characterization of a turbulence bifurcation underlying L-mode confinement transitions on Alcator C-Mod
Empirical energy confinement scalings play a crucial role in the design of tokamak fusion reactors, measuring how quickly energy is transported by turbulence from the fusion-producing core to conduction loss at the edge. Unfortunately, experiments often exhibit discontinuous changes in scaling …
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Scaling and Pattern Formation in Condensed Matter Systems
… Dislocation avalanches, which resembling the scaling behavior in driven ferromagnetic, are observed. Critical exponents are extracted from power laws extending over 5 decades. I extend the PFC model to accommodate actual atomic configurations and vacancies. I use the extended PFC model to …
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Inelastic Light Scattering Studies of Quantum Phase Transitions in Copper Titanium Diselenium and Multiferroic Terbium Manganese Trioxygen
… x-dependent mode softening exhibits identical scaling behavior to thermal mode softening in undoped TiSe2, suggesting that, like thermal mode softening, the x-dependent mode softening is also associated with a critical point. The softening and significant linewidth broadening of the observed …
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Velocity fluctuations in slow flow through porous media
… a power-law dependency. I demonstrate that this scaling behavior is consistent with the predictions of theories. Finally, I study creeping flow through a single rough walled channel by numerical simulation and present a theory that predicts scale dependency of the permeability for tight fractures.
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Black brane solutions of Einstein-scalar-Maxwell gravity and their holographic applications
… planar event horizon). Moreover, we discuss hyperscaling violation, a particular scaling behavior of free energy and entropy (as functions of the temperature), typical of some phase transitions of real condensed matter systems. Hyperscaling violation can be described, via AdS/CFT, starting from a …
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Ultra-scaled III-V Vertical Tunneling Transistors
… record-high tunneling current density and ideal scaling behavior. Furthermore, we have fabricated ultra-scaled VNW TFETs which show that a combined high tunneling current and steep subthreshold swing is indeed achievable. Finally, we discuss opportunities and challenges of all-III-V complementary …
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On the Scalability of Ad Hoc Dynamic Spectrum Access Networks
… help to answer the fundamental question of the scaling behavior of network capacity, end-to-end throughput, and network overhead in ad hoc DSA networks.
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Energy consumption in networks on chip : efficiency and scaling
… to optimize energy consumption and model its scaling behavior as the number of cores increases. We use synthetic traffic patterns and full system simulations to test and validate our methods. Finally, we take a step back and look at the evolution of computer hardware in the last 40 years and, …
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Field theoretical methods for strongly correlated electron systems
… order parameter. We study the zero temperature behavior and the low temperature and low magnetic field regimes in the vicinity of the quantum phase transition. In the strong coupling phase, we obtain scaling behavior for the chemical potential of the impurity f.J and for the amplitude of the …
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Resource allocation in stochastic processing networks : performance and scaling
… primarily been used to capture the long-term behavior of the flow-level dynamics in the Internet. In this thesis, we develop novel methods to analyze the performance of existing resource allocation policies, and we design new policies that achieve provably good performance. First, we study …
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Sweeprate and Temperature Effects on Crackling Noise
… as separate bursts characterized by power law behavior of the frequency histograms over many decades, is observed in many driven systems far from equilibrium. Examples of such systems pepper a remarkable range of length and energy scales from jerky domain wall motion of disordered magnets, to …
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Hierarchical volumetric object representations for digital fabrication workflows
… used as a design representation, and we examine scaling behavior and efficient rendering. We present interactive design tools that use these representations as their geometry engine. Data from CT scans is also used to populate these distance fields, showing significant benefits in file size and …
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Path Integral Monte Carlo Simulations of Helium: From Superfluid Droplets to Quantum Crystals
… at finite temperature. We have achieved linear scaling of computer time with number of particles through the use of neighbor lists, allowing us to simulate systems of several thousand atoms. We have derived a local superfluid estimator and used it to examine the microscopic superfluid response …
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Front Propagation and Feedback in Convective Flow Fields
… expansions, a transition in symmetry and scaling behavior of the front and fluid dynamics for larger values of feedback is studied. The front velocity, flow structure, front geometry and reactive mixing length scales for a range of solutal and thermal feedback are quantified. Lastly, …
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