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 106 for “"parameterisation"”.
-
Representation and parameterisation issues in genetic algorithms
… representations and its applicability to dynamic parameterisation. A number of alternative and new methods of dynamic parameterisation were investigated, in addition to a new non-binary 'Quotient crossover' mechanism. Finally, the Multi-GA was applied to two real world problems, demonstrating its …
-
Particle selection and parameterisation in virtual reality
… (VR) technology in enhancing the selection and parameterisation of astronomical data compared to traditional desktop environments. Through the development and evaluation of the Immersive Data Visualisation Interactive Explorer for Particle Rendering (iDaVIE-p), a novel software application …
-
Epigenetic modelling: DNA methylation and working towards model parameterisation
The main focus of the research in this thesis is the investigation in DNA methylation mechanisms of epigenetics and the study of a specific database. As part of the latter work, the role of curation is described, and a new knowledge management system, PathEpigen1 , is reported that is currently …
-
Blockchain, parameterisation and automated arbitrage applied to the chemical industry
… of eco-industrial parks (EIPs), Industry 4.0, parameterisation, blockchain and arbitrage are brought together to explore the issues of simulation speed and accuracy, machine-to-machine (M2M) communication and automated participation in financial markets. In the first scenario, a biodiesel plant …
-
Measurement and parameterisation of the air-sea CO2 flux in high winds
During a three year occupation of Station Mike (66°N 2°E), the Norwegian Ocean Weather Ship Polarfront was equipped with a range of meteorological and seastate measuring instruments, including the autonomous air-sea flux system “AutoFlux” (Yelland et al., 2009) and an underway ?pCO2 system. An …
-
Using high-resolution modelling to improve the parameterisation of convection in a climate model
… mean state. This suggests that convection parameterisations must represent the influence of moist convective downdrafts to properly predict the vertical structure of convective clouds so as to correctly predict the cloud-top height and vertical transport. Finally it was found that …
-
Nelson Siegel parameterisation of the South African Sovereign Yield Curve: an exploration of its predictors, a link to the main asset classes and implementation of systematic trading strategies
… Bond Yield curve according to the Nelson Siegel Parameterisation framework, as implemented in the pivotal work of Diebold and Li (2006) in forecasting the US Treasury curve.
-
Monitoring and modelling hydrological response and sediment yield in a North York Moors catchment : an assessment of predictive uncertainty in a coupled hydrological-sediment yield model
… on landuse and soil type) and random spatial parameterisation of hydrological parameters in restricting model uncertainty of the spatially lumped model parameterisation were examined, using Bayesian updating.The results revealed significant model uncertainty in both the hydrological and …
-
The tropical peatland carbon sink: climatic drivers and modelling of peat accumulation at the pan-tropical scale
… sink because of limited available data for parameterisation and validation, and tropical peatland carbon dynamics are notably missing from Earth System Models (ESMs). In this thesis, I examine long-term apparent carbon accumulation rates and their climatic drivers for tropical peatlands and …
-
Analytical approximations of surface fields induced on convex scatters by exteriorly incident scalar fields
… integrals. This thesis is based on a method of parameterisation of the surface integrals which removes the weak singularities provided that the surface satisfies certain convexity conditions. Firstly this method of parameterisation is applied to investigate the properties of the Helmholtz …
-
Converting Java programs to use generic libraries
… JSR-14 source code requires two steps: parameterisation (adding type parameters to class definitions) and instantiation (adding the type arguments at each use of a parameterised class). Parameterisation need be done only once for a class, whereas instantiation must be performed for each …
-
Prediction of proton and carbon-13 NMR chemical shifts using chemical shift prediction programs
… and SpecInfo-V3.2 program's databases. Poor parameterisation of CHARGE-V7 program coupled with complex spectra of a1kaloids could be contributing to the inaccurate predicted chemical shifts. Increasing the size of the user database for SpecInfo and ACD programs would improve the accuracy in …
-
Mean-value modelling and robust control of the airpath of a turbocharged diesel engine.
… of the engine is derived with a focus on the parameterisation of the turbocharger. The effect of heat transfer via the turbocharger housing on the efficiencies derived from temperature measurements is identified as being very significant at low speed and load points regularly met on emission …
-
Forest dynamics at regional scales: predictive models constrained with inventory data
… and present a discussion of competing methods of parameterisation and model selection. In Chapter Two I present a model of individual tree mortality in the eastern United States which incorporates species, climatic and competitive effects parameterised using Markov Chain Monte Carlo methods. The …
-
Diffeomorphic image registration with applications to deformation modelling between multiple data sets
… This involves introduction of the log-domain parameterisation of the deformation field by its approximation via a stationary velocity field. A quantitative and qualitative examination of existing and newly proposed algorithms for pairwise deformable image registration presented in this thesis, …
-
Integrating In-Silico Models with In-Vitro Data to Generate Novel Insights into Biological Systems
… an effect on migratory cell behaviour. Then, the parameterisation of a differential equation model is used to quantify the key mechanisms of Nrf2 regulation in the cytoplasm and nucleus. Validation with experimentally derived datasets results in the quantification of rate ratios important to the …
-
Robust mixture regression using mean-shift penalisation
… This method uses a component specific mean-shift parameterisation which contributes towards both the successful identification of outliers as well as robust parameter estimation. The technique is demonstrated by a simulation study and a real-world application. The mean-shift regression method …
-
On the effects of hydrological uncertainty in assessing the impacts of climate change on water resources
… climate scenarios, the effects of hydrological parameterisation, and the bias of the hydrological model in representing different streamflow magnitudes. Quantification of the impacts of climate change on water resources will depend on the emission scenario, climate model, downscaling technique …
-
The design of adaptive structures for wing morphing
… hierarchical strategy is employed, interleaving parameterisation enhancement followed by structural optimisation into the aerodynamic design process, such that the design paradigm, in conjunction with global approximation techniques, is emphasized by enhanced roll while drag is minimised. This …
-
The transport of PM10 over Cape Town during high pollution episodes
… the sensitivity of the simulations to chemistry parameterisation, two chemistry parameterisation schemes were used in the study. The two schemes are RADM2 chemistry scheme coupled with the MADE/SORGAM aerosol module (RMS) and RADM2 coupled with the GOCART aerosol module (RGC). While RMS accounts …
Page 1 of 6