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 45 for “"Monte-carlo technique"”.
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Dipmeter analysis by a Monte Carlo technique
Includes bibliographical references.
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Advances in an open-source direct simulation Monte Carlo technique for hypersonic rarefied gas flows
… is increased using particle based numerical techniques as opposed to continuum computational fluid dynamics. However, one of the modern problems of particle based techniques is the high computational cost associated with it. This thesis presents an enhanced open-source particle based …
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Quantification of Ultrasound Contrast Agents Using High-Frequency Ultrasound
… corresponding to the scattering from UCAs. A Monte Carlo technique was used to estimate the UCA concentration in vitro by minimizing the mean square error between the estimated power spectrum and the theoretical power spectrum. Samples of the Definity mixture were also extracted and analyzed …
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Cyclic polymer liquid crystal structures.
… been undertaken by the use of the Metropolis Monte Carlo technique and a mean field calculation. Two models have been studied by the Monte Carlo technique in the NVT ensemble. In the first, each complete molecule was represented by a disc-like interactions potential and a tendency for the …
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Potential Future Exposure in the Presence of Initial Margin
… with it are addressed. The two primary techniques for calculating initial margin considered are nested Monte Carlo, and Gaussian Least Squares Monte Carlo. These two techniques are compared for effectiveness. It is shown that the nested Monte Carlo technique performs well under numerous …
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Efficient Stochastic Collocation Based Variability Analysis Using Model-Order Reduction Techniques
… crucial to a successful design. The conventional Monte Carlo technique is computationally expensive due to the large number of simulations and a slow convergence rate. To address the above difficulties, a novel method is presented in this thesis for time-domain stochastic analysis of large …
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Monte Carlo simulation for high-frequency intrinsic noise analysis of MOSFET
This thesis introduces a Monte Carlo simulation of intrinsic electronic noise in MOSFETs. Brief reviews of the important aspects of carrier transport, band structure, and Monte Carlo technique are discussed. Based on full band 2D Monte Carlo simulation, a noise analysis platform is utilized. To …
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Relation of electron scattering cross-sections to drift measurement in noble gases
… from measurements of electron swarm behavior. A Monte Carlo technique for simulating electron motion through a gas of isotropic scatterers is presented, providing a simplified version of Biagi's MAGBOLTZ algorithm. Using this Monte Carlo software, we examine the thermalization of electron swarms, …
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Full band ensemble Monte Carlo simulation of silicon devices
A Monte Carlo simulator for silicon devices has been developed. The band structure data for this self-consistent device simulator were computed using the empirical pseudopotential method. The ensemble Monte Carlo technique used in the simulations is described in detail. A homogeneous simulator, …
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Reliability quantification of nuclear safety-related software
… aspects of white box and black box testing techniques. The safety-critical features of the software and feasibility of the methodology are the key drivers in determining the architecture for the testing strategy. Monte Carlo technique is applied to randomly sample inputs based on the …
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A Gibbs sampling approach to maximum a posteriori time delay and amplitude estimations
… however, is not a trivial task. A Gibbs Sampling Monte Carlo technique is proposed to recover these arrivals and their features. The method is tested on synthetic data as well as data from the Haro Straight experiment for the estimation of the number of arrivals, the amplitude and time delay …
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Monte Carlo simulations for heavy ion dosimetry
… 50 to 450 MeV/u have been performed using the Monte Carlo technique. To simulate the transport of a particle in water the computer code SHIELD-HIT v2 was used which is a substantially modified version of its predecessor SHIELD-HIT v1. The code was partially rewritten, replacing formerly used …
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On the quantification of safety margins
… fast reactor and we use an importance sampling Monte Carlo technique to propagate the epistemic uncertainties and to calculate the overall probability of failure. A comparison with an alternative active design is considered also. The results show that the active system can have, for this …
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A Method to Improve the Sustainment of Systems Based on Probability and Consequences
… vendor-claimed dates for end of production. A Monte Carlo technique is then used to convert these distributions into a statistically relevant set of possible futures. Finally, these futures are analyzed to determine what combination of actions will result in the system being sustained for least …
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Photometry and transit-timing analysis for eleven transiting exoplanets
… fitted for with precision using the Markov Chain Monte Carlo technique, and the resultant parameter values are presented. Transit-timing analysis is performed on all systems: CoRoT-2, GJ436, HAT-P-1, HD17156, HD189733, TrES-1, TrES-2, WASP-2, WASP-3, XO-1, XO-2, and XO-3. Transit timing is …
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A study of solute transport of radiolysis products in crud and its effects on crud growth on PWR fuel pin
… term, which make the problem non-linear. A Monte Carlo technique is adopted to simulate the behavior of the different species. The direct application of this study to nuclear engineering research is to aid in the design of reactors with higher performance. With the deregulation of the U.S. …
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Experimental and computational analysis of random cylinder packings with applications
… a collective rearrangement algorithm (based on a Monte Carlo technique) to generate different packing structures. 3D random packing limits were explored, and the packing structures were quantified by their positional ordering, orientational ordering, and the particle-particle contacts. …
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GPU-Accelerated Point-Based Color Bleeding
<p>Traditional global illumination lighting techniques like Radiosity and Monte Carlo sampling are computationally expensive. This has prompted the development of the Point-Based Color Bleeding (PBCB) algorithm by Pixar in order to approximate complex indirect illumination while meeting the demands …
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Polarized Radiative Transfer in the Magnetospheres and Atmospheres of Neutron Stars
… in the classical magnetic Thomson domain using Monte Carlo technique. Representative results for emergent polarization signals from surface layers are presented for both localized and extended surface regions with magnetic field strengths that are of broad applicability to different neutron star …
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A Monte Carlo study of the scaling of nucleation rates in a Lennard-Jones system
… system. The model uses the Bennett Metropolis Monte Carlo technique to determine small cluster growth/decay rate constant ratios ß<sub>n-1</sub>|α<sub>n</sub> at four temperatures (T = 40, 50, 60, and 83.6K) below the argon Lennard-Jones critical temperature, T<sub>c</sub>. The …
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