This thesis describes the research on the use of non-linear formant trajectories to model speech dynamics under the framework of a multiple-level segmental hidden Markov model (MSHMM). The particular type of intermediate-layer model investigated in this study is based on the 12-…
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The world is facing the challenge of global warming and environment protection. On the other hand, the demand of electricity is growing fast due to economic growth and increase in population. Since the growth in demand is also a heavy factor in energy equations, then the renewab…
Scaling of complementary metal-oxide-semiconductor (CMOS) technology has benefited the semiconductor industry for almost half a century. For CMOS devices with a physical gate-length in the sub-100 nm range, extreme device variability is introduced and has become a major stumblin…
Advances in transistors with cut-off frequencies >400GHz have fuelled interest in security, imaging and telecommunications applications operating well above 100GHz. However, further development of passive networks has become vital in developing such systems, as traditional copla…
The aim of this Phd is to investigate the properties of micro-cantilevers, containing BaTiO\(_3\) based capacitors on their top and verify if they can be used as energy harvesting devices. SrRuO\(_3\)/BaTiO\(_3\) systems behaving as high quality (i.e. with an impedance phase bet…
The study of electronic noses has been an active area of research for over 25 years. Commercial instruments have been successfully deployed within niche application areas, for example, the food, beverage and pharmaceutical industries. However, these instruments are still inferio…
The overall aim of this thesis is to examine the electrical and electrochemical properties of single crystal intrinsic and boron doped diamond grown by chemical vapour deposition. Techniques such as AFM, C-AFM, FE-SEM, PL imaging, in air and in solution Hall and resistivity meas…
The share of electric power from small scale Distributed Generation (DG) connected to low voltage distribution networks (DNs) is increasing in the electricity market day by day as this technology is not only becoming cheaper relative to other resources but is also environmentall…
This thesis presents the designs and measurement performance of nine SU-8 micromachined waveguide circuits operating at WR-10 band (75-110 GHz), WR-3 band (220-325 GHz) and WR-1.5 band (500-750 GHz). Two thick SU-8 photoresist micromachining processes, namely, the separate singl…
Remotely Operated Vehicle (ROV) operation is a prime candidate for training by simulation. In the present study, we investigate the simulation of ROV operation, especially related to search tasks, using low-cost Commercial Off The Shelf (COTS) development tools, so-called “serio…
Forward Scattering Radar (FSR) is a special case of bistatic radar configuration where the desired radar signal is formed via the shadowing of the direct (transmitter-to-receiver) signal by the target body. FSR offers a number of interests including an inherent ability to detect…
Helical devices are employed in the area of microwave technology. Applications such as filters and travelling-wave tubes are some of these in which helical devices are used. Ferrite loaded helical devices have been of interest to scientists and engineers throughout the last half…
Since the publication of research in the mid-1980s describing the formation of freeform graphene there has been an enormous growth in interest in the material. Graphene is of interest to the semiconductor industry because of the high electron mobility exhibited by the material a…
When humans summarize a document they usually read the text first, understand it then attempt to write a summary. In essence, these processes require at least some basic level of background knowledge by the reader. The least of which would be the Natural Language the text is wri…
This PhD research project encompasses an investigation into the controlled behaviour of magnetic domain walls in patterned ferromagnetic nanostructures using advanced nanofabrication techniques and characterised by the techniques of transmission electron microscopy. By fabricati…
Research in silicon photonics has recently seen a significant push to develop complete silicon-based optical components for optical communications. Silicon has shown its potential to overcome the bandwidth limitations of microprocessor interconnect, whereas, the silicon platform…
This include the mass spectroscopic measurement of gases generated in the arc in water case, the more accurate arc voltage measurement just before current zero, and the post arc current measurement.
The research presented in this thesis explores the impact of Augmented Reality on human performance, and compares this technology with Virtual Reality using a head-mounted video-feed for a variety of tasks that relate to scene examination. The motivation for the work was the que…
Over the past decades, there have been a number of trends that have driven the desire to improve the ability to navigate in all environments. While the Global Positioning System has been the driving factor behind most of these trends, there are limitations to this system that ha…