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 77 for “"Theoretical Modelling"”.
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Graph Theoretical Modelling of Electrical Distribution Grids
… the substation and bus network as graph theoretical models for this major piece of electrical infrastructure. We also generate substation and bus networks for a wide range of existing data from both synthetic and real grids and show several properties of these graphs, such as density, …
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Theoretical modelling of two wave-power devices
… the second part of this thesis, we first model theoretically an array of cylinders and then apply the theory developped to an array of buoys. However, numerical difficulties encountered for the array of cylinders have led to the conclusion that the theory developed is numerically inefficient, …
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Data-driven theoretical modelling of the turbulent energy cascade
Durch eine Modellierung der Energiekaskade gewinnt man wertvolle Einsichten in die Dynamik turbulenter Strömungen. In dieser Arbeit werden multiplikative Kaskadenprozesse untersucht und mit verschiedenen experimentellen Zeitreihen der Energiedissipation verglichen. Zur Berechnung der …
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Theoretical modelling of induced polarization effects due to arbitrarily shaped bodies
Includes bibliographical references (pages 238-239).
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Theoretical modelling of induced polarization effects due to arbitrarily shaped bodies
Includes bibliographical references (pages 238-239).
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Theoretical modelling of temperature and rainfall inuence on Schistosoma species population dynamics
Schistosomiasis, otherwise known as snail fever or bilharzia, is caused by parasitic at- worms called schistosomes. In human, these schistosomes infected the intestines or the urinary tract where they develop to form other acute and chronic diseases which include fever, malaise, severe abdominal …
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Mixed-ligand diruthenium complexes: theoretical modelling and interpretation of electronic absorption spectra
… of these Ru₂⁵⁺ complexes but lack an established theoretical framework to fully understand specific characteristic traits, such as a shoulder band in the visible range of the ultraviolet-visible (UV-Vis) spectrum in aqueous solutions, the absence thereof in solutions containing excess chloride …
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Theoretical Modelling and Characterisation of Concerted Tip and Surface Effects in NC-AFM
… therefore addresses these two<br/>issues from a theoretical viewpoint. After describing the theoretical model used to simulate NC-AFM behaviour, it is used in conjunction with various theoretical techniques to study three important eects on NC-AFM measurements contributing to these issues: …
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Waiting time distributions and national targets for elective surgery in UK: theoretical modelling and duration analysis
… of their waiting times from an empirical and theoretical perspective. In Chapter 2, we empirically investigate the effect of government targets on the distribution of patients’ waiting times by applying duration analysis techniques to waiting time data from 2001/02 and 2002/03 for three …
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Investigation of the effect of hydroxycitric acid on urinary calcium oxalate risk factors for kidney stone formation in artificial urine: theoretical modelling and in vitro crystallisation experiments
… constants for Ca, Mg and Zn-HCA complexes, theoretical modelling of HCA-complex formation in artificial urine and in vitro crystallisation experiments. A potentiometric analysis was conducted to determine thermodynamic binding constants. These were included in the database of the JESS …
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The effect of inositol-hexakisphosphate (phytate) on urinary risk factors for calcium oxalate urolithiasis in South African population groups with different kidney stone risk profiles : theoretical modelling, in vitro crystallisation experiments and in vivo human studies
… urinary supersaturation of calcium salts. These theoretical predictions were then tested in an in vitro model. Calcium oxalate crystallisation experiments were conducted in simple salt solutions, artificial urine and real urine of the respective groups. The following parameters were measured: …
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Simulation of signal and background processes for collider experiments
This thesis is concerned with the theoretical modelling of scattering processes as they are studied at high-energy collider experiments. Special attention is thereby given to an accurate simulation of multi-particle final states that are expected to constitute the key signatures for the existence …
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Transitional and turbulent flow of non-Newtonian slurries in pipes
… design problem, with particular emphasis on the theoretical modelling of the laminar/turbulent transition and turbulent flow behaviour of these slurries in pipes. The literature and theory pertinent to-the flow of slurries in pipes-is examined. The development of non-Newtonian Reynolds numbers …
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Production of phosphorus alloys through thermal reactions and electrochemical reduction of molten apatite
… through high temperature electrochemical means. Theoretical modelling and calculations show that P-alloys can be manufactured directly from decomposed molten fluorapatite. Nickel-phosphide is chosen as an examplary alloy both for its incredible thermodynamic stability and for its mechanical …
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Thermoelectric cooling devices: thermodynamic modelling and their application in adsorption cooling cycles
… an electro-adsorption chiller. Based on the EAC modelling, a bench-scale electro-adsorption chiller is designed, fabricated and tested experimentally for its performances and the results are verified with theoretical modelling. Infra-red heaters with a tapered kaleidoscope emulate uniform heat …
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Fluid mechanics of lubricant transport in non-contact regions in the piston ring pack in internal combustion engines
… apply Computational Fluid Dynamics (CFD) and theoretical modelling to the non-contact regions in the piston ring pack.
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Modelling the Epidemiological Dynamics of Seasonal Influenza Viruses at Local Scales
… observational, ecological, experimental and modelling studies: this would enable more accurate and timely epidemiological forecasts and more efficient allocation of public health resources. In this thesis, I investigate the phylodynamical interactions between the seasonal influenza virus, …
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Triadic Resonance Instability in finite-width internal gravity wave beams
Through the use of both experiments and theoretical modelling, this thesis examines the weakly non-linear dynamics of an internal wave beam becoming unstable to Triadic Resonance Instability (TRI). To date, most theoretical work examines the instability in the context of monochromatic plane waves. …
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Control of cracking in concrete by steel reinforcement : an examination of some of the mechanisms involved
… problem has to date defied completely objective theoretical modelling. The finite element method provides a powerful new modelling tool for theoretical simulation of complex real problems. Recent developments on constitutive models for concrete make this method extremely attractive for use in …
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