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 27 for “"large-scale simulation"”.
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Large Scale Simulation of Spinodal Decomposition
… that the parallel domain decomposition method scales well to a thousand processor cores. For short time, the Wiener chaos Karhunen-Loeve expansion (WCKLE) method is more efficient than the Monte Carlo simulation. We simulate the whole spinodal decomposition process by the Wiener chaos …
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Large Scale Simulation of Plate-Like Particle Suspensions
Shear thinning and shear thickening of suspensions of plate-like particles are studied. It is found that shear thinning is caused by both the decrease of the strength of the Brownian motion and the decrease of the hydrodynamic contribution to the viscosity resulting from the increasing particle …
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A Middleware for Large-scale Simulation Systems & Resource Management
… confront the implications of the increasing scale of information becoming available due to a combination of advances in pervasive computing, data acquisition systems as well as high performance computing. Integrated modeling and decision making environments are necessary to support planning, …
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Large scale simulation and analysis to understand enzymatic chemical mechanisms
The full stack approach, from Biochemical Network Simulation to Quantum Mechanics, is developed and utilized to understand in this thesis to understand enzymatic mechanism. The story falls into two segments that highlight two different aspects of enzymatic mechanisms. The first is the determination …
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A hybrid model for large scale simulation of unsteady nonlinear waves
… for simulating rogue waves in random seas on a large time and space scale is proposed in this thesis. It is formed by combining the derived fifth order Enhanced Nonlinear Schrödinger Equation based on Fourier transform (ENLSE-5F), the fully nonlinear Enhanced Spectral Boundary Integral (ESBI) …
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Large-scale simulation of the mechanical response of porcine cranial bone
… under study. In this thesis, we presented a simulation-based approach to describe the stress-strain response of cranial bone in mammals that can be applied to animal studies for model validation purposes as well as in human head injury studies. First, we explicitly characterized a …
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A Computational Thermo-Chemo-Mechanics Framework for the Large-Scale Simulation of Material and Structural Failure in Hypersonic Environments
… and a computational framework that enables the large-scale simulation of thermochemically fracturing solids exhibiting complex post-fracture interface response. The continuum theory is based on a general thermodynamically-consistent description of the coupled multiphysics problem, and the …
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A computational framework for the large scale simulation of the dynamics of highly flexible filaments in a viscous flow
… computational framework. Motivated by the very large deformations that the fibers experience especially in the case of extreme aspect ratios, we implement a finite element framework based on the exact Kirchhoff-Love beam formulation. This method constitutes a significant improvement with respect …
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Inference for the survival function of the linearly decreasing stress Weibull
… function will be studied through a small scale simulation study. Various methods for finding confidence intervals of the survival function of a Linearly Decreasing Stress Weibull system are given. A large-scale simulation study will also be conducted to study the effectiveness of the …
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Exploiting Building Demand Flexibility Through Machine Learning for Building-to-grid Integration
… a building's load profile across different timescales – is a key aspect of the ongoing effort to increase interconnectivity between buildings and the power grid. By harnessing their demand flexibility, buildings can provide significant benefits to the grid and bolster grid resilience and …
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Accurate Low-Cost Methods for Performance Evaluation of Cache Memory Systems
Trace-driven simulation is a simple way of evaluating cache memory systems with varying hardware parameters. But to evaluate realistic workloads, simulating even a few million addresses is not adequate and such large scale simulation is impractical from the consideration of space and time …
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Neuromodulation Based Control of Autonomous Robots on a Cloud Computing Platform
… but computationally efficient to allow for large-scale simulation of thousands of neurons. The model is implemented using graphics processing units (GPUs) for parallel computing in real-time using the ROS environment. The model is implemented to study the risk-taking, risk-aversive, and …
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Modeling microdefects formation in crystalline silicon : the roles of point defects and oxygen
… development of models, theoretical analysis and large-scale simulation. Two major problems have been addressed. First, following the work of T. Sinno [150] and T. Mori [108], models have been developed for the transport, reaction and aggregation of native point defects - self-interstitials ('s) …
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A distributed simulation environment for multibody physics
A distributed simulation environment, which can be used to model multibody physics, is developed. The software design is based on the object oriented paradigm and is implemented in C++ to run on a single workstation or multiple processors in parallel. It provides facilities to set up a multibody …
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A Modeling and Simulation Approach to the Small Aircraft Transportation System: Assessing Midair Conflict Potential Under the Free Flight Paradigm
… on the nation's highways and at our mid- to large size airport hubs. In 1999, NASA initiated a five-year, $69 million research program to study the feasibility and viability of SATS including development of the emerging technologies necessary to make SATS a reality. The five-year plan …
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Penalised regression for high-dimensional data: an empirical investigation and improvements via ensemble learning
… remains incompletely understood. Through a large-scale simulation study, consisting of more than 1,800 data-generating scenarios, we systematically consider the influence of various factors (for example, sample size and sparsity) on method performance. We focus on three related goals --- …
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Fast simulation of stochastic biochemical reaction networks on cytomorphic chips
The large-scale simulation of biochemical reaction networks in cells is important in pathway discovery in medicine, in analyzing complex cell function in systems biology, and in the design of synthetic biological circuits in living cells. However, cells can undergo many trillions of reactions over …
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Performance and security tradeoffs of provable website traffic fingerprinting defenses over Tor
… the design, for both live experiments as well as large-scale simulations, we need precise models of the traffic profiles generated by a browser's visiting websites. This in turn requires us to obtain a fine-grained model of the web page loading process, two key components of which are the browser …
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Direct numerical investigation and reduced-order modeling of 3-D honeycomb acoustic liners
… presented in this thesis uses direct numerical simulations (DNS) of a compressible, viscous fluid to understand the inherent fluid mechanics and guide reduced-order-model development. While there are numerous orifices and cavities in a general conventional acoustic liner sample, only the one …
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Composite load modeling for power systems: Model reduction, identification, and application to conservation voltage reduction
… load model remains challenging due to the large number of diverse load components. The traditional static and dynamic load models can hardly capture the dynamic behavior of modern loads, especially for fault-induced delayed voltage recovery (FIDVR) events. Thus, a more comprehensive …
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