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 23 for “"system optimisation"”.
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Multi-objective system optimisation with respect to availability, maintainability and cost
Safety critical engineering systems are becoming increasingly larger and more complex. One way of ensuring the dependability of such systems is via architectural redundancy and replication of components. Use of redundancy has its limitations though, as it can increase the size, weight and cost of a …
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Multi-Physics Co-Simulation of Engine Combustion and Exhaust Aftertreatment system: Development of a Multi-Physics Co-Simulation Framework of Engine Combustion and Exhaust Aftertreatment for Model-Based System Optimisation
… approach of individual simulation of engine system parts, the Kinetics SRM code was coupled with a GT-SUITE engine model to fill in the gap of accurate emissions predictions from one-dimensional simulation tools. The system was validated against testing points collected from the AJ133 V8 5L …
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Using orthogonal arrays to train artificial neural networks.
… Networks. Such arrays are popularly used in system optimisation and are known as Taguchi Methods. The chief advantage of the method is that the network can learn quickly. Fast training methods may be used in certain Control Systems and it has been suggested that they could find application in …
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Evaluation of the ‘Ward, Area and Service Projects Module’ within a Digital Audit Management and Tracking System Implemented Throughout Swansea Bay University Health Boards (SBUHB) Wards and Areas
… The AMaT (Audit Management and Tracking System) ‘Ward, Area and Service Projects’ module aims to centralise the management of all ward based audits digitally throughout Swansea Bay University Health Board (SBUHB). This post implementation evaluation explores how the module has impacted …
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Optimal economic operation of electric power systems using genetic based algorithms.
… for optimising the operation of electric power systems. It discusses methods which have resulted in significant direct cost saving in operating an electric power system. In particular, the thesis demonstrates the simple search procedure and the powerful search ability of Gas in multi-modal, …
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Assessment of the performance of a Photovoltaic (pv) system for powering electrolysers in the green hydrogen project at Tsau//khaebs National Park using modelling and simulation approach
… and solar energy. This thesis focuses on the PV system required to power the electrolyser, involving site analysis, component selection, and system optimisation using PVsyst and Fraunhofer Zenit. Economic evaluation was conducted via Levelized Cost of Energy (LCOE) calculations. A site …
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Mathematical and numerical modelling of dispersion-managed solitons, autosolitons and self-similar optical pulses
… autosoliton transmission in DM fibre systems with periodical in-line deployment of nonlinear optical loop mirrors (NOLMs) is investigated. The use of in-line NOLMs is addressed as a general technique for all-optical passive 2R regeneration of return-to-zero data in high speed …
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Planning energy systems for small, rural communities (including economic, technical and thermodynamic criteria)
… a strategy for planning domestic energy supply systems for small, rural communities. Two methods, for system optimisation are proposed: economic optimisation and thermodynamic optimisation. Both methods are applied to the small Scottish island of Eigg, as an example of a small community. It is …
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Mathematical algorithms for optimisation of large scale systems
This research is concerned with the problem of optimisation of steady state large scale systems using mathematical models. Algorithms for on-line optimisation of interconnected industrial processes are investigated. The research is concerned with two different kinds of algorithms which are based on …
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The application of iron oxide based photocatalysts in chromium photoredox chemistry
… for the Cr(VI) reduction process with a view to system optimisation.
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Optimisation of a Modern Numerical Library: a Bottom-Up Approach
… centres on numerical library to describe the optimisation of computation at various levels. I present the low-level design of numerical operations and show the related impact on performance optimisation. I create new algorithms for key operations, and build an automatic tuning module to …
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An analytical inspection framework for evaluating the search tactics and user profiles supported by information seeking interfaces
… assess both search designs and fully implemented systems. The framework, called Sii, provides three types of analyses: 1) an analysis of the amount of support the different features of a design provide; 2) an analysis of the amount of support provided for 32 known search tactics; and 3) an …
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In-Silico design and verification of an extracorporeal normothermic cardiac perfusion system for use during heart transplantation procedures
… time. This study explores the development of a system for continuous myocardial perfusion to improve donor heart preservation during transplantation. Using in-silico modelling and simulation, the study defines functional requirements for a proof-of-concept system capable of achieving …
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In-Silico design and verification of an extracorporeal normothermic cardiac perfusion system for use during heart transplantation procedures
… time. This study explores the development of a system for continuous myocardial perfusion to improve donor heart preservation during transplantation. Using in-silico modelling and simulation, the study defines functional requirements for a proof-of-concept system capable of achieving …
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Modelling sustainable energy and the implications for policy
… applies a comprehensive method: an ex-post power system optimisation model. The purpose is to address questions raised about the effectiveness of wind power in reducing CO2 emissions in Ireland. Using 2012 data, the modelling shows that renewable electricity saved 0.43 – 0.46 tCO2/MWh. Power …
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Genetic Programming for Low-Resource Systems
Embedded systems dominate the computing landscape. This dominance is increasing with the advent of ubiquitous computing whereby lightweight, low-resource systems are being deployed on a vast scale. These systems present new engineering challenges: high-volume production places a stronger emphasis …
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Reducing the environmental impact of hydraulic fracturing pumps
… and applies a methodology for environmental optimisation of the key mechanical design parameters for the high-pressure pumps that are central to hydraulic fracturing operations. Before describing the optimisation methodology the thesis provides an overview of the industrial plant required to …
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Techno-Economic Analysis of Microgrids with Distributed Energy Resources in Rural Limpopo Province, South Africa
… in rural areas needs attention through microgrid optimisation. This research aims to techno-economically analyse the feasibility of optimising microgrids in rural Limpopo province, focusing on adopting a system with the least net present cost and levelized cost of energy. Three objectives are the …
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Using Integrated Assessment Models to Achieve the Paris Climate Target
… indicates that predictions from both energy system optimisation models, which are more widely used, and FTT depend on similar unknowns related to future rates of technological change. Based on these three challenges, the thesis concludes, a diversity of model choices and assumptions is …
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