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 551 for “"computer simulations"”.
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Computer Simulations in Orbital Mechanics
No abstract prepared.
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Computer simulations of tapered particles
… results of a series of molecular dynamics (MD) simulations of systems of soft repulsive tapered particles. Essentially, the objective of the project was to investigate the effect that changing the degree of taper of these particles has on the collective behaviour of the system. The particle …
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Computer simulations of kin selection
… operate in this structure. However, stochastic computer simulations show that random variation among daughter groups can supply the needed among-groups variation and allow kin selection to proceed. The second limit on kin selection involves simple population viscosity, in which individuals …
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Computer simulations of cellular movements
… different cell populations can assume. Computer models, using the mathematical model as their framework, have had partial success simulating the phenomenon of cell sorting but have failed to simulate engulfment.</p> <p>A computer model is described here which is able to simulate the …
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Computer simulations of various blackjack strategies.
Massachusetts Institute of Technology. Dept. of Electrical Engineering. Thesis. 1969. B.S.
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Computer simulations of Fréchet dendrimers in solutions
… nanosecond atomistic Molecular Dynamics (MD) simulations of explicitly solvated Fréchet dendrimers, generations G1 to G5. The properties of these dendrimers are investigated in four solvent invironments: vacuum and water (representatives of poor solvents), and tetrahydrofuran (THF) and …
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Phase behaviour of multicomponent systems from computer simulations
… evolution approach coupling molecular-dynamics simulations to a genetic algorithm to design multilayered condensates with distinct compositions in each layer. By analysing the features of the sequences that give rise to multiphasic condensates, we find that the correct balance of homo- and …
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Computer simulations for constant-frequency resonant power processors
Simulations of two types of constant-frequency resonant power converters using SPICE-2/I-G SPICE are performed. The first one is a parallel resonant converter (PRC) using a controlled output rectifier. The PRC is operated at a constant frequency and its output voltage is regulated by controlling …
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Computer simulations for a scholastic theory of granular drainage
… author, and several results were obtained using simulations carried out with this implementation. As regards particle streamlines, average velocity profiles, predictions of particle mixing and of particle diffusivity, it was found that qualitative and quantitative agreement with experiments was …
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A quadrature-based technique for robust design with computer simulations
… variance to enable robust parameter design in computer simulations. This method is based on the Hermite-Gaussian quadrature for a single input. It is extended to multiple variables, in which case, for simulations with n randomly varying inputs, the method requires 4n + 1 samples. For situations …
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Lattice thermal conductivity of bulk and polycrystalline PbTe from computer simulations
… application is usually limited: first-principles simulations do not allow for the study of intrinsic defects in large structures and the available classical potentials tend to overestimate the lattice thermal conductivity of the bulk material. Here, we present an optimised Coulomb-Buckingham …
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Computer Simulations of Faceted Nanoparticles and Carbon Nanotubes in Liquid Crystals
… nanoparticles and carbon nanotubes (CNTs). Computer simulations at different levels of detail are used to study these systems. Results from this project will be relevant for potential applications of these systems in displays, nanoscale electronics, electro-optical switches, and in the …
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Rationalising the effect of guanine-based Ricin inhibitors using computer simulations
for humans.This has lead to its use as a biological weapon and a therapeutic agent. the reaction mechanism of ricin is not known and so rational design is limited, resulting in no effective inhibitor being found for this enzyme. An important step towards understanding the reaction mechanism and the …
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A Design Space Exploration Process for Large Scale, Multi-Objective Computer Simulations
… between inputs and outputs for large scale computer simulations. Primarily, the proposed design space exploration procedure uses a hierarchical partitioning method to help mitigate the curse of dimensionality often associated with the analysis of large scale systems. Closely coupled with the …
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Elucidating the Interplay Between Lipids and Membrane Proteins Using Multiscale Computer Simulations
… scientific research during the last 5 decades. Computer-based methods, such as molecular dynamics (MD) simulations, have proven to be a valuable approach in addressing many of the details of lipid organization and membrane protein activity. I used MD simulations at both atomistic and …
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Models and methods for computer simulations as a resource in plant breeding
… impact and modern complexity of these decisions, computer simulation based on effective models can be an important resource for the breeder, particularly in providing guidance on choice of parents and decisions related to various aspects of the integrated breeding approach. Four areas related to …
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Resolving the hydration of hexacyclic systems using ultrasonic interferometry and computer simulations
The major part of this thesis focuses on investigating dynamic hydration behaviour of a series of hexacycylic molecules in water, by using computational techniques validated through ultrasound interferometry experiments. The water taking part to the diffusive motion of the solutes has been …
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Computer Simulations of Rare Earth Erbium Ion-Extractant Binding at Liquid-Liquid Interfaces
… by employing classical molecular dynamics (MD) simulations to investigate the binding mechanism of HDEHP to Er³⁺ in two separate environments: bulk water and the aqueous-organic interface. In our first study, we investigated the binding of a single DEHP⁻ (deprotonated HDEHP) extractant to fully …
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