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 18 of 18 for “"deterministic method"”.
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Modeling the lubrication of the piston ring pack in internal combustion engines using the deterministic method
… lubrication model are developed based on a deterministic approach. The models take into consideration the effect of both the liner finish micro geometry and the ring face macro profile. The liner finish effect is evaluated on a 3D deterministically measured liner finish patch, with …
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Modeling of liner finish effects on oil control ring lubrication in internal combustion engines based on deterministic method
… oil control ring model is developed based on the deterministic hydrodynamic method by Li et al. [31] and the Greenwood Tripp asperity contact model [39]. Unlike the traditional methods of piston ring pack modeling determined by the ring face macro profile which hardly exists on the twin-land oil …
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Variability and Uncertainty in Risk Estimation for Brownfields Redevelopment
Various methods can be used to estimate the human health risk associated with exposure to contaminants at brownfields facilities. The deterministic method has been the standard practice, but the use of probabilistic methods is increasing. Contaminant data for non-carcinogens and carcinogens from 21 …
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Robust planning for unmanned underwater vehicles
In this thesis, I design and implement a novel method of schedule and path selection between predetermined waypoints for unmanned underwater vehicles under uncertainty. The problem is first formulated as a mixed-integer optimization model and subsequently uncertainty is addressed using a robust …
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Design flood peak determination in the rural catchments of the Eastern Cape, South Africa
… projects. Over the past century standard methods for flood peak estimation have been developed for most countries, and are usually categorized in the literature as direct statistical analyses, regional statistical analyses, empirical methods and deterministic methods. Some of these methods …
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An Implementation of Field-Wise Wind Retrieval for Seawinds on QuikSCAT
… In contrast to the more traditional method known as point-wise wind retrieval, field-wise techniques estimate wind field model parameters. In this way, neighboring wind vectors are jointly estimated, ensuring consistency. This work presents and implementation for field-wise wind …
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Adaptive Scheduling in Heterogeneous Distributed Computing Systems
… dynamism. To address this, a property estimation method is presented, which utilizes a k-Nearest Neighbours algorithm, a smoothed average and an analytical benchmark. These estimated properties are then used by two different scheduling techniques, which make less restrictive assumptions than the …
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Power System Transient Stability Analysis Considering Load And Wind Power Generation Variability
… transient stability was investigated using the deterministic and probabilistic methods. The deterministic method was used to investigate the power system transient stability based on 9 scenarios consisting of low, moderate, and peak system loading and wind power generation conditions. The …
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Development of a Novel Detector Response Formulation and Algorithm in RAPID and its Benchmarking
… the Detector Response Function (DRF) methodology is proposed and developed for real-time and accurate radiation shielding calculation. The real-time capability of solving radiation shielding problem is very important for: (1) Safety and monitoring of nuclear systems; (2) Nuclear …
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The Mathematics behind Speciated Isotope Dilution Mass Spectrometry
… This thesis explores multiple mathematical methods to solve SIDMS equations, and compares the properties of these solution methods. Simulation analysis is conducted to provide uncertainty estimates.
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A new three phase 6-slots 10-poles permanent magnet flux switching machine with inner rotor configuration
… rotor poles configuration, optimization based on deterministic method and performance investigation through 2D-FEA. In this work, four topologies have been proposed, such as 6S-10P PMFSM with salient type of rotor (SalR), 6S-10P PMFSM with span rotor (SpR), 6S-8P AlCiRaF PMFSM with segmental rotor …
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Verification of methodologies for estimating human exposure to high levels of mercury pollution in the environment
… intake estimates using exposure estimate models. Deterministic methods and the probabilistic methods (the Monte Carlo) were applied to simulate the daily Hg intake doses which were verified by comparing the estimates to those established from measured Hg concentrations in the hair of 289 …
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Enhanced indoor positioning utilising wi-fi fingerprint and QR calibration techniques
… techniques, which is based on enhanced deterministic method; Bayesian estimation and Kalman filter utilising dynamic localisation region. Here, accumulated accuracy is proposed with distribution of error location by estimation at each test point on path movement. The error distribution …
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Multiscale modeling of chemical vapor deposition and plasma etching
… is present in most microelectronic devices. Two methods for linking discrete particle (or feature scale) and continuum models of precursor transport are presented. The discrete and continuum models are coupled by boundary conditions at their mutual interface (just above any reactive surface with …
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Contributions to Lanchester combat theory
… possible. The form of the model, expressed deterministically is dm/dt = - µmn - δn, dn/dt = - λmn - γn, where m and n are the number of fighting units actively fighting at time t andµ, o, A and y are attrition coefficients. The form of this model is such that the Linear and Mixed laws arise …
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Remote sensing of rapidly draining supraglacial lakes on the Greenland Ice Sheet
… and total lake volume using a physically-based method. The first aim of this research is to overcome this shortfall by developing a fully-automated lake area and volume tracking method (“the FAST algorithm”). For this, various methods for automatically calculating lake areas and volumes with …
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Thin-film silicon solar cells : photonic design, process and fundamentals
… cells in the wave optics regime. We develop a deterministic method to optimize periodic textures for light trapping. Deep and high-index-contrast textures exhibit strong anisotropic scattering that is outside the regime of validity of the Lambertian models commonly used to describe …
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Monte Carlo explicitly correlated methods
… For experimental accuracy, wave-function based methods require a large set of basis functions and inclusion of instantaneous correlation through expensive correlated methods. The methods that have been developed to account for the incompleteness of the basis set, the R12/F12 methods, create high …