Thesis (Ph.D.)--George Mason University, 2008. / Vita: p. 214-215. Thesis director: Edward J. Wegman, Yasmin H. Said Submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Computational Sciences and Informatics. Title from PDF t.p. (viewed Mar. 9, 2009). Includes bibliographical references (p. 209-213). Also issued in print.

Thesis (M.B.A.)--University of Hong Kong, 1995. / Includes bibliographical references (leave 77-81).

Thesis (M.J.)--Carleton University, 1992. / Also available in electronic format on the Internet.

Thesis (Ph. D.)--Texas Woman's University, 1990. / Vita. Abstract. Includes bibliographical references (leaves 111-120).

Thesis (Ph. D.)--University of Toronto, 1996. / Distributor from envelope. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 228-252).

Thesis (Ph. D.)--Indiana University, 1989. / Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 271-288).

Thesis (Ph. D.)--Texas Woman's University, 1990. / Vita. Abstract. Includes bibliographical references (leaves 111-120).

Adrian Segall, Baruch Awerbuch. / Bibliography: p. 19. / "January 1982" / "ONR-N00014-77-C-0532" "N00014-75-C-1183"

This thesis supports the hypothesis that the measurement of the potency of threat agents to information systems is a crucial element in the accurate calculation of the risks to which systems are subject and the subsequent management of those risks. It describes a series of papers that were published as the result of research that has been carried out into a range of information security issues. The research evolved over the period from 1995 from the underlying drive to identify means of proving improved protection for government and military information systems. Once the initial research was completed, further work was undertaken to resolve issues identified in completed research and also to address newly identified security issues. This document describes the relationship between the papers that were produced from the individual areas of research and address a range of related topics. This document examines the sources of threats to information systems and methods that can be employed to improve the process of managing and treating the risk that they create. It also addresses issues relating to areas of information security that have not been clearly understood and a provides a number of countermeasures that can be implemented to protect information systems in government, the commercial sector and in private use and a framework for the forensic investigation of incidents. As a result of this research, a clearer understanding has been gained of methods that can be implemented to improve the security of information systems at all levels and a threat methodology has been developed that is now taught in a number of countries and which has now been adopted by the UK Government for further development to meet their specific needs. The contribution to knowledge has been the development of advice on the security of information systems, a taxonomy for the investigation of incidents and a method for the measurement of threat.

M.Ing. (Electrical Engineering Science) / In today's rapidly changing technological environment, more and more importance is being attached to producing products as small as possible to save space as well as materials. Systems today use a wide range of signals, from those used to transmit energy, to small signal electronic signals used for control purposes. As these signals are not very compatible, they must each have their own cable harness to prevent unwanted interference between the signals. As a first step to reducing system size, the control signals (or any signal containing information) may be transmitted on the power transmission line, using techniques investigated in this dissertation. Systems using the same conductors for simultaneous energy and data transmission have many applications ranging from high tech systems to low cost rural communication. Examples of systems where this technology can be applied include: (a) distributed high frequency power systems, where switching of remote equipment can be done from a central point; (b) communication and control in harsh environments such as mining complexes, where switching of fans and motors for example can be done from a central point, while a communication network can be established by placing the information signals on the power cables; and (c) flexible manufacturing cells, where robots can be controlled via the power transmission harness. On the other hand, rural communication systems can be realised over the 50 Hz utility transmission network in remote areas. Such a system has the advantage of offering a low cost solution to providing access to communication to a large number of people spread over a large area. The work described In this dissertation covers two systems, firstly information transmission over the 50 Hz utility network and secondly, the design of a high frequency distributed power system utilising simultaneous information transmission on the transmission line.The first three chapters give an introduction to the technology and discuss the theory which must be applied to make simultaneous energy and information transmission over one conductor viable. Chapter 4 discusses the 50 Hz utility network as an information distribution network. The advantages and disadvantages are discussed, while some solutions are proposed how the disadvantages can be overcome. Chapter 5 discusses a high frequency distributed power system using simultaneous information transmission. The converter design is discussed, while some special design considerations are given which are essential to successful simultaneous information transmission in such a distributed system. To help with the design of the converter used, a simulation was carried out to predict the voltage and current waveforms in such a converter, the results of which can be seen in Appendix B.. The aim of simultaneously transmitting energy and information on the same transmission line was realised in both cases. In the 50 Hz system it was shown that adding external networks to guide the information carrier around obstacles such as 50 Hz power transformers improved the information transmission. A distributed power system however does not need external elements as long as the design of transformers follows the special considerations as described in chapter 5.