
\cleardoublepage

\section*{Declaration}
\addcontentsline{toc}{chapter}{Declaration}

This thesis has been composed wholly by me and contains my  own work,
carried out as a member of the UKQCD collaboration.  The work presented
in chapter~4 was carried out initially in collaboration with David
Henty and Claudio Parrinello.

Some of the material in chapter~3 has been presented in
\vspace{-0.5cm}
\begin{itemize}
\item D.S.~Henty, R.D.~Kenway, B.J.~Pendleton, J.I.~Skullerud,
\rf{Phys.~Rev.}{D51}{5323}{1995} 
\end{itemize}

A brief outline of the method employed in chapter~4 has been presented in
\vspace{-0.5cm}
\begin{itemize}
\item J.I.~Skullerud,
\rf{Nucl.~Phys.}{B~(Proc.~Suppl.)~47}{398}{1996} 
\end{itemize}

\vspace{2cm}
\begin{flushright} 
jon ivar skullerud
\end{flushright}

