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\chapter*{Colophon}

In short ``Thanks every body''!
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Completing my PhD %degree 
is the most intellectually challenging %% FUCK OFF ZERNIKE POLYNOMIALS WERE MORE DIFFICULT --- and actually useful unlike set theory
activity of my first 52 years of my life!                       %% SET THEORY IS A LOAD OF BOLLOCKS
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The best and worst moments of this  journey 
have been shared with many people. 
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It has been a great privilege to spend several years 
visiting the Mathematics and Engineering departments of 
the University of Brighton, pushing me forward in clarity of self-expression,
precision through mathematics, critical assessment and carefully crafted English:
its members will always remain dear to me.
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%%%% IS THIS BIT A BIT MAD???? YES! 27AUG2013
% % % Like an army recruits training Sergeant Major I found them 
% % % hard task masters at first, and then, as with realising the rationale behind training and
% % % {\em even} parade drill, respected and grew to like them.
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My first debt of gratitude must go to my supervisors, 
Dr. A. Fish,
Dr. C Garret and        %% TOP BLOKE
%Dr. C Garret,          %% TOP BLOKE
Professor J. Howse. %% JAVALA LAT HUND
%Dr. A. Fish.          %% JAVALA LAT HUND
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They patiently provided the guidance, 
encouragement and advice necessary for me to proceed through the 
research, consolidation and write-up phases of the PhD program,
to prepare and present three papers to conferences~\cite{syssafe2011,syssafe2012,Clark_fastzone}  
and to complete and submit this thesis. 
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I owe a debt of thanks to Dr J. flower, my MSc project supervisor, 
who explained that the chapter in my project documentation postulating a modular form of
FMEA---which had %obvious 
potential for making the process %FMEA
more efficient---was a concept worthy of being developed for a PhD and assisting  me
to present the chapter as %submit this as 
a conference paper~\cite{Clark200519}.
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Further I thank her for encouraging me to apply for the PhD. %% PITY SHE DID NOT STAY ON AS MY PHD SUPERVISOR
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I am deeply thankful to the directors of {\etc} not only for
funding this course, but providing training and work experience in the
field of safety critical engineering, and giving me Friday
afternoons to pursue my studies.
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At Energy~Technology~Control, the following people gave encouragement, and
validated the concepts for the `modular~FMEA' that I was developing, Martin~Thirsk, Colin~Talmay,
Darren~Legge and Hazel~Anderson. 
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These Engineers, whose whole careers
have been focused on the safety critical electronic/computing area,
gave valuable time to look at and comment on my FMMD proposals.
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Their comments gave me confidence that the methodology I was developing had
%was not only an academic exercise but had 
potential practical 
applications and benefits.
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The environment and context of the work at {\etc}
was very useful for clarifying concepts relating to FMEA and 
safety; at least once a week there is  a new practical case study arising
and being discussed, be it, say, the observability of the effect of failures in an 
traditional amplifier configuration,
or how a particular sensor could fail. 
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The field of industrial burner control, is highly regulated and
is rich with practical examples of safety measures built into
hybrid digital/electronic systems.
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This has given me many opportunities to %  has been % be
apply the new methodology against `real~world' problems.
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%and thus its 
%theoretical aspects have been  often
%sounded out  against `real~world' problems.
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These real~world failure scenarios and their proposed solutions, were often detailed in  
requirements and design documentation, submitted in support of 
safety accreditation. 
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I was glad to be tasked to produce many of these documents.
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Again I thank {\etc}, for giving me
these parallel tasks, which aided my studies.
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I wish to thank my parents, Jennifer and Richard Clark.
% MY MUM for proof reading alot!
I hope that this work makes you proud.
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