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 13 of 13 for “"Linear Optimisation"”.
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Treatment planning for manifold multi-ion particle therapy
… to control both the dose distribution and the linear energy transfer of the radiation throughout the target. However, to date, there has been little research into the potential for going beyond a very limited number of ion species in a single treatment plan due to the limitations of current …
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Markerless 3D Motion Capture of Cheetahs in the Wild
… CNNs, extended Kalman filters (EKFs), non-linear optimisation and sparse bundle adjustment (SBA) to remove the need for markers to be used in recovering a subject's location from video footage. The result of the project will be the development of a markerless 3D motion-capture system. The …
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Inference and decision making in large weakly dependent graphical models
… first part of this thesis, we show that Bayes linear methods provide a natural approach to modelling this data. We develop a new optimisation problem for Bernoulli random variables, called constrained Bayes linear, which has additional constraints incorporated into the Bayes linear optimisation …
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Modelling financial time series using discrete and continuous paradigms
… index. This analysis will lead to a non-linear optimisation problem, which has as its objective function the minimisation of the residual sum of squares. Eventually, from these parameters, we shall provide an estimation for the instantaneous volatility of the underlying assets, which …
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Optimal resource allocation In base stations for mobile wireless communications
… rich source of interesting and often challenging optimisation problems. This thesis is concerned with a series of mixed-integer non-linear optimisation problems that arise in mobile wireless communications systems. The problems under consideration arise when mobile base stations have an Orthogonal …
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Study of creep characteristics of multi-layered corrugated fibre board protective cushions
… fitted to creep data. Curve fitting with a non-linear optimisation technique shows the model has a reasonable fit with experimental data. Creep data and curve fitting shows an unexpected trend in that as the humidity level is raised the creep strain levels reduce. The effect of this is offset by …
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A new optimisation procedure for uncertainty reduction by intelligent wells during field development planning
… arise while using commercial software for optimisation of a typical, modern field with multiple reservoirs and a complex surface production network. Inclusion of the optimisation algorithm dramatically increases the calculation time in addition to showing stability and convergence problems. …
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Transport energy demand: techno-economic modelling and scenarios for Irish climate policy
… energy sectors in the country; Irish TIMES, a linear optimisation energy system model; and COPERT, a pollution model. The methodology is also adapted to analyse trends in freight energy demand in a similar way. Finally, this thesis addresses the gap in the representation of travel behaviour in …
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Phytoplankton community structure determined through remote sensing and in situ optical measurements
… the radiative transfer model, EcoLight-S. Non-linear optimisation inversion schemes are then implemented. A simulated dataset is created to investigate how much variability in reflectance can be associated with changes in phytoplankton cell size in different bio-optical water types. This …
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Markerless multiple-view human motion analysis using swarm optimisation and subspace learning
… video sequences using particle swarm optimisation and charting, a subspace learning technique.In our first framework, we formulate, and perform, human motion tracking as a multi-dimensional non-linear optimisation problem, solved using particle swarm optimisation (PSO), a …
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An Approach to Optimising the Design of a Repeaterless Global Quantum Network
… on its design are limited. Fibre-based optimisations focus on device placement. Cost analysis including nodes, fibres and usage of optical switching has been insufficiently explored. Satellite quantum key distribution is important for global reach. Research focuses mainly on optimal …
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Mathematical modelling and control of agitated extraction columns
… profiles at steady state conditions using non-linear optimisation technique. The estimated values were then correlated as functions of operating parameters and were incorporated in·the model equations. The model equations comprise a stiff differential~algebraic system. This system was solved …
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Probabilistic deterioration modelling and time-dependent reliability analysis of coastal defences
… using Weibull distributed waiting times and non-linear optimisation techniques. The limit state equations for the reliability-based model are updated regarding the sea level rise and deterioration models, and the future performance is predicted using time-dependent reliability analyses. The …