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.
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Showing 1 to 20 of 34 for “"MC simulations"”.
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Partonic rescatterings during jet fragmentation in the QCD vacuum
… We demonstrate this procedure using Monte Carlo (MC) simulations which serve to establish a baseline for our observables~\cite{Parker1}. We subsequently apply our analysis procedure to the entire $pp$ collision data set produced at the LHC during Run II. We present a search for partonic …
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Compact neutron sources for zero knowledge warhead verification via epithermal neutron transmission analysis
… to zero-knowledge physical cryptography, and MC simulations offer promising results for compact epithermal neutron sources.
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Particle size prediction in reactive precipitation processes
… and computational efficiency. Here, Monte Carlo (MC) simulations have been completed in order to validate the QMOM for aggregation processes. The accuracy of the QMOM has been demonstrated through excellent agreement with the MC simulations for aggregation by the hydrodynamic and Brownian …
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Multiscale approaches on two-dimensional magnetic materials: from atomistic to mesoscale level
… (DFT+U) and mesoscale models with Monte-Carlo (MC) simulations. Firstly, we performed a high throughput screening over 150 compounds, identifying 59 potential two-dimensional magnets. To computed their critical temperature Tc, we parametrised the generalised Heisenberg model (XXZ) using DFT+U, …
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X-ray Scatter Computation and Simulation in Cone Beam Computed Tomography
… include analytical calculations, Monte Carlo (MC) simulations and superposition calculations. Analytical and MC methods apply well-established physical models describing scattering interactions to accurately calculate or simulate scatter profiles. The prevailing challenge is the expensive …
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The application of GPU to molecular communication studies
… (GPU), to the field of molecular communications (MC), an investigation into communication possibilities of futuristic in vivo nanomachines. Existing MC simulations have not fully accounted for structural boundaries and the associated simulation of a massive number of messenger molecule paths for …
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Theory and simulation of amorphous organic electronic devices
… weight organic thin films using Monte Carlo (MC) simulations. The principle results that we report are: (1) the experimental demonstration and theoretical analysis of the previously neglected phenomenon of solid state solvation; (2) the identification of significant errors in existing models …
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Rough volatility models
… In chapter 3, we present a novel Monte Carlo (MC) pricing scheme for rough volatility models based on a Karhunen-Loève-style approximation of White Noise. This complements theoretical results by Bayer et al. (2017). Our numerical experiments confirm a theoretical strong rate of H for a central …
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Density relaxation of granular matter through Monte Carlo and granular dynamics simulations
… Carlo) and deterministic (granular dynamics) simulations are employed in this work. The granular microstructure of the system particles was analyzed via radial distribution function, coordination number, and the distribution of sphere centers in the vertical direction. In the MC simulations, …
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A comparison of uncertainty analysis methods for the modeling of land disposal of petroleum exploration and production waste
… analysis methods, namely : (1) Monte Carlo (MC) simulation, (2) First-Order Second Moment (FOSM) method, and (3) Modified Point Estimate (MPE) method, were compared in terms of computational efficiency and accuracy for evaluation of contaminant concentration at a down-gradient receptor. …
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Degradation of proton and carbon Bragg peaks due to density inhomogeneities
… parenchyma. To do so, it adopts Monte Carlo (MC) simulations, validated by a series of transmission experiments on lung-like phantoms. Fluctuations in the water equivalent thickness (WET) were found the major degradation factor, contributing more than 75% (40%) to the distal falloff widening …
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Adsorption and electrostatic potentials at the electrochemical interface
… the end of Part I, a simple Monte Carlo model (MC) is applied to a very complex carbon dioxide reduction system to study competitive adsorption. This application of Monte Carlo simulations demonstrates the challenges of extracting meaningful parameters from empirically fitting MC simulations to …
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Molecular dynamic simulation of xenon bubble re-solution in uranium dioxide
… re-solution in UO2 by molecular dynamics (MD) simulations: homogeneous re-solution and heterogeneous re-solution. For the homogeneous mechanism, a hybrid approach is employed whereby Monte Carlo (MC) simulations are used to obtain the full recoil energy spectrum of fission gas atoms, and MD …
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Molecular simulations of surfactants and silanes: Self-assembly in solutions and on surfaces, and friction between monolayers
… alkylsilane monolayer films via Monte Carlo (MC), and molecular dynamics (MD) simulations. The existing literature on the surfactant aggregation is used as a guide for modeling the alkylsilanes molecules. However, the current literature is ambiguous whether to describe interactions between the …
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Simulating biochemical physics with computers
… water fluid using a hybrid QM!CI/MM potential in MC simulations. The solute is described by the AM1 approach and water molecules are treated classically. Specially, the spontaneous polarization of the solvent due to the excitation of the solute was considered. The solvent effects on the blue shift …
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Monte Carlo Simulation of Nanostructures: Semiconductor Devices to Ion Channels
… for two-dimensional capacitors obtained from MC simulations have been compared with the results obtained from the Schrodinger-Poisson solver to test the validity of the model. Device simulations of finFET devices show that quantum effects do not have significant effect on device currents. …
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Modeling Disorder in Proteins Yields Insights into the Evolution of Stability and Function
… molecular dynamics (MD) and Monte-Carlo (MC) simulations. A global strategy emerges where proteins have improved their thermal stability using electrostatics, when modifying electrostatics is not harmful to their function.</p> <p>A recently discovered set of proteins can perform their …
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Modelling spot prices, risk management, and investment strategies for the energy markets
… are evaluated along with various Monte Carlo (MC) simulations based models and a Hybrid Monte Carlo with Historical Simulation (MC-HS) approach, introduced in this thesis for the first time. This thesis also delves into index investment applications for the energy markets that have recently …
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Reactor agnostic multi-group cross section generation for fine-mesh deterministic neutron transport simulations
… cross section (MGXS) generation. Monte Carlo (MC) presents the most accurate method for MGXS generation since it does not require any approximations to the neutron flux. This thesis develops novel methods that use MC to generate the fine-spatial mesh MGXS that are needed by high-fidelity …
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Acceleration methods for Monte Carlo particle transport simulations
… results from reactor analysis. Monte Carlo (MC) eigenvalue neutron transport methods are uniquely qualified to provide these results, due to their accurate treatment of space, angle, and energy dependencies of neutron distributions. Monte Carlo eigenvalue simulations are, however, …
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