Knowledge of network topologies is invaluable to system administrators regardless of the size of an enterprise. Yet this information is time consuming to collect, and even more so to be processed into easily consumable formats (i.e. visual maps). This is especially so when the c…
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The Internet was initially created for academic purposes, and due to its success, it has been extended to commercial environments such as e-commerce, banking, and email. As a result, Internet crime has also increased. This can take many forms, such as: personal data theft; imper…
Nowadays, the majority of corporations mainly use signature-based intrusion detection. This trend is partly due to the fact that signature detection is a well-known technology, as opposed to anomaly detection which is one of the hot topics in network security research. A second …
The 3D Finite-Difference Time-Domain (FDTD) method simulates structures in the time-domain using a direct form of Maxwell's curl equations. This method has the advantage over other simulation methods in that it does not use empirical approximations. Unfortunately, it requires la…
Nowadays every organisation is connected to the Internet and more and more of the world population have access to the Internet. The development of Internet permits to simplify the communication between the people. Now it is easy to have a conversation with people from everywhere…
Cloud computing has been the subject of many researches. Researches shows that cloud computing permit to reduce hardware cost, reduce the energy consumption and allow a more efficient use of servers. Nowadays lot of servers are used inefficiently because they are underutilized. …
Recent advances in technology provided the ground for highly dynamic, mobile, infrastructure-less networks, namely, ad-hoc networks. Despite their enormous benefits, the full potential cannot be reached unless certain issues are resolved. These mainly involve routing, as the lac…
This thesis advances the modelling and verification of access control policies by using automated knowledge-based symbolic model checking techniques. The key contributions of this thesis are threefold: firstly, a modelling language that expresses dynamic access control policies …
This thesis is on the automatic creation of model generators to assist the validation of model transformations. The model driven software development methodology advocates models as the main artefact to represent software during development. Such models are automatically convert…
Parallelization has moved in recent years into the mainstream compilers, and the demand for parallelizing tools that can do a better job of automatic parallelization is higher than ever. During the last decade considerable attention has been focused on developing programming too…
This dissertation describes research into “Antennas with Frequency Domain Control for Future Communication Systems” and several novel antennas are shown, each of which addresses a specific issue for current and future communication systems, in terms of wideband coverage, channel…
There have been many claims as to the benefits of personal digital assistants (PDA) as tools in education, but little objective data concerning device usage patterns. The aim of this project was to overcome this deficiency by objectively investigating the use of mobile devices i…
Searching for information is a recurring problem that almost everyone has faced at some point. Being in a library looking for a book, searching through newspapers and magazines for an old article or searching through emails for an old conversation with a colleague are some examp…
This research has investigated the modelling and optimisation of the tilt casting process of Titanium Aluminides (TiAl). This study is carried out in parallel with the experimental research undertaken in IRC at the University of Birmingham. They propose to use tilt casting insid…
It is well known that the human brain is highly modular, having a structural and functional organization that allows the different regions of the brain to be reused for different cognitive processes. So far, this has not been fully addressed by artificial systems, and a better u…
Advances in DNA sequencing technologies, particularly the advent of next generation sequencing (NGS) platforms, have revolutionised the field of metagenomics and allowed great progress to be made in the way that microbial communities are analysed. However, the wealth of data now…
Scientific Workflow Systems have been developed as a means to enable scientists to carry out complex analysis operations on local and remote data sources in order to achieve their research goals. Systems typically provide a large number of components and facilities to enable suc…
Image retrieval plays a major role in many image processing applications. However, a number of factors (e.g. rotation, non-uniform illumination, noise and lack of spatial information) can disrupt the outputs of image retrieval systems such that they cannot produce the desired re…
Current business environments are characterised by a wide range of factors and issues which combine to create an unprecedented level of uncertainty and exposure to risks in IT management and all areas of strategic and operational activities. However IT risk awareness presents bo…