The fundamental structures that underpin business activities must evolve and change in order to equip companies to thrive in a market whose characteristics are increasing competition and instability. The incremental advances in applied computing technology and business methodolo…
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The object of this thesis is to form an understanding of the origin of the problems associated with proton-exchanged waveguides, and to investigate possible solutions. Chapter 1 gives a brief introduction to the properties of lithium niobate, and discusses the methods available …
Photoproduction of mesons provides an excellent means by which to study the proton excitation spectrum. The existence and properties of some nucleon resonances are well established, but many more are still debated, meriting much theoretical and experimental attention. The proxim…
The increasing density offered by Field Programmable Gate Arrays(FPGA), coupled with their short design cycle, has made them a popular choice for implementing a wide range of algorithms and complete systems. In this thesis the implementation of video compression algorithms on FP…
When a computer program requires legitimate access to confidential data, the question arises whether such a program may reveal sensitive information to an unauthorised observer. There is therefore a need to ensure that a program, which processes confidential data, is free of unw…
The research described in this thesis is concerned with the analysis and design of conventional wire antenna types, dipoles and loops, based on the left-handed transmission line approach. The left handed antennas have a unique feature that the wavelength of the induced current b…
This thesis is one outcome of research aimed to raise the awareness of textiles excavated in Greece. The inherently sensitive nature of excavated textiles accounts for the rarity and poor condition of the finds, making them more often than not unidentifiable for the archaeologis…
Digital music technologies, and instruments in particular, are the result of specific systems of thought that define and enframe the user's creative options. Distinctive divisions between digital and acoustic instruments can be traced, contrasting the conceptually based design o…
The advances in computer and networking technologies over the past decades produced new type of collaborative computing environment called Grid Networks. Grid network is a parallel and distributed computing network system that possesses the ability to achieve a higher computing …
Anthropometry can be used in certain circumstances to facilitate comparison of a photograph of a suspect with the potential offender portrayed in video surveillance crime footage. Anthropometry does not have the same success rate in identification as DNA or fingerprinting. Howev…
This work investigates impression management and in particular impression management using ubiquitous technology. Generally impression management is the process through which people try to influence the impressions that others have about them. In particular, impression managemen…
The thesis presents a comparison study of the two most established simulation approaches in Operational Research, Discrete-Event Simulation (DES) and System Dynamics (SD). The aim of the research implemented is to provide an empirical view of the differences and similarities bet…
A brain-computer interface (BCI) is a direct communication system between a brain and an external device in which messages or commands sent by an individual do not pass through the brain’s normal output pathways but is detected through brain signals. Some severe motor impairment…
Over recent years, designing technologies to promote health-related behavioural change has been an area of growing interest in HCI. Given the prevalence of self-monitoring and social facilitation in emerging designs, the assumption appears to be that increasing an individual’s a…
The objective of this thesis is to present an analysis of antennas, which are applicable to wireless sensor networks and, in particular, to the requirements of the Speckled Computing Network Consortium. This was done through a review of the scientific literature on the subject, …
Flexible rotor-bearing system stability is a very important subject impacting the design, control, maintenance and operating safety. As the rotor bearing-system dynamic nonlinearities are significantly more prominent at higher rotating speeds, the demand for better performance t…
It is predicted that the percentage of persons over 50 years of age affected by bone diseases will double by 2020 (Navarro et al., 2008). Clearly this represents a need for permanent, temporary or biodegradable orthopaedic devices that are designed to substitute or guide bone re…
Urban Search and Rescue is a dangerous task for rescue workers and for this reason the use of mobile robots to carry out the search of the environment is becoming common place. These robots are remotely operated and the search is carried out by the robot operator. This work prop…