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 129 for “"hybrid method"”.
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Molecular dynamics-Lattice Boltzmann hybrid method on graphics processors
… phenomena. For studying flows, a non-equilibrium method is implemented involving characterization of boundary and other conditions to properly simulate the flow. Using a leap-frog integration scheme in conjunction with immersed boundary treatment and a stochastic model, this code is suitable for …
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A hybrid method for flows in local chemical equilibrium and nonequilibrium
… with available computational resources. A method of further leveraging the increase in computational power is desired. The hybrid chemistry scheme proposed here attempts to maintain the accuracy of finite-rate schemes while retaining some of the cost savings associated with equilibrium …
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Surface integral finite element hybrid method for localized problems in continuum mechanics
Thesis (Sc.D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1984.
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A numerical hybrid method for modeling outdoor sound propagation in complex urban environments
… requirements of conventional numerical methods such as boundary element (BE), finite-difference time-domain (FDTD), or ray-tracing methods. Recently, a considerable amount of work has been devoted to developing energy-based methods for this application, and results have shown the …
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Surface integral and finite element hybrid method for the analysis of three-dimensional fractures
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1989.
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A facile hybrid method to synthesize metal and metal chalcogenide nanoparticles using various capping groups
… nanoparticles is presented using a novel hybrid solution based high temperature method. Furthermore is the synthesis of zinc telluride (ZnTe) and cadmium telluride (CdTe) nanostructured materials also described. The nanomaterials are predominantly capped by organic ligands. The use of …
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A Hybrid Method for Predicting Lift and Drag of Semi-planing/Semi-displacement Hull Forms
… Froude number range between 0.4 and 1.0. A hybrid method for calculating the lift and drag of semi-planing/semi-displacement hull forms is developed. This is done by separating the kinematic boundary condition into odd and even parts. The odd and even parts of the kinematic boundary …
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A hybrid method for impulse response measurements with synthesized musical tones and Masked-MLS Stimuli
… the above hypothesis, this thesis develops a new hybrid technique, in which narrow band linear chirps, called “presto-chirps” centred on musical notes are used to measure impulse responses in low to mid frequency bands, and music-masked maximum-length-sequences are deployed to obtain those in …
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Analysis and Application of Haseltine and Rawlings's Hybrid Stochastic Simulation Algorithm
… simulations, Haseltine and Rawlings proposed a hybrid of ODE and SSA algorithm, which combines ordinary differential equations (ODEs) for traditional deterministic models and SSA for stochastic models. In this dissertation, accuracy analysis, efficient implementation strategies, and application …
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Location of stable and unstable equilibrium configurations using a model trust region quasi-Newton method and tunnelling
A hybrid method consists of a quasi-Newton method and a homotopy method for locating multiple equilibrium configurations has been proposed recently. The hybrid method combined the efficiency of a quasi-Newton method capable of locating stable and unstable equilibrium solutions with a robust …
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Integration and processing of high-resolution moiré-interferometry data
A new hybrid method combining moire interferometry, high resolution data-reduction technique, two-dimensional datasmoothing method, and Finite Element Method (FEM) has been successfully developed. This hybrid method has been applied to residual strain analyses of composite panels, strain …
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The Art of Modeling and Simulation of Multiscale Biochemical Systems
… systems. The thesis addresses both modeling methods and simulation strategies. In the first part, we propose modeling methods to study the behavior of the insulin secretion pathway. We first expand the single cell model proposed by Bertram et. al. to model multiple cells. Synchronization …
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Stochastic Simulation Methods for Biochemical Systems with Multi-state and Multi-scale Features
… we study stochastic modeling and simulation methods for biochemical systems. The thesis is focused on systems with multi-state and multi-scale features and divided into two parts. In the first part, we propose new algorithms that improve existing multi-state simulation methods. We first …
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A Hybrid Discrete and Continuum Framework for Multiscale Modeling
… at the bottom. This work builds upon nascent hybridization work that combines two simulation methodologies: discrete methods and continuum methods. Discrete methods model every single grain and are thus accurate; however, they scale poorly. By contrast, continuum methods can be faster by …
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Application of localized hybrid methods of stress analysis to some problems in the mechanics of composites
A new method of stress analysis which combines an experimental technique — moire interferometry, and a numerical method — finite element analysis, is presented. In this localized hybrid method, the displacement fields which the moire experiments provide in some local regions of interest are used as …
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ADVANCED IMPLEMENTATIONS OF THE ITERATIVE MULTI REGION TECHNIQUE
… of the finite-difference time-domain (FDTD) method into the iterative multi-region (IMR) technique, an iterative approach used to solve large-scale electromagnetic scattering and radiation problems, is presented in this dissertation. The idea of the IMR technique is to divide a large problem …
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Refining Value-at-Risk estimates: An Extreme Value Theory Approach
… a proper threshold in the Peaks Over Threshold method for extreme value theory analysis called the hybrid method is also proposed. The proposed Value-at-Risk models are compared to the traditional Value-at-Risk models commonly used by banks. Back-testing results following Kupiec (1995) …
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Comparison of Mesh and Meshless Methods for Partial Differential Equations of Galerkin Form
… purpose is to compare two types of Galerkin methods: The finite element mesh method and moving least sqaures meshless Galerkin (EFG) method. The second purpose of this project is to determine if a hybrid between the mesh and meshless method is beneficial.</p> <p>This manuscript will be …
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Eine hybride Methode zur Berechnung von Liapunow-Exponenten
In this thesis we present a new numerical method for computing some or all Lyapunov exponents of a discrete dynamical system. It is called hybrid because it combines the classical QR method with more recent methods that use spatial integration with respect to an invariant ergodic measure. We also …
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