\documentclass[a4paper,11pt]{book} %draft can be a useful option for quick compile
\input{chapter/preamble}
\makeindex
\cftpagenumbersoff{chapter}
\begin{document}
% =============================================================================
\frontmatter
\input{chapter/titlepage}
% =============================================================================
\mainmatter
\renewcommand{\baselinestretch}{1.05}
\small\normalsize
\scalefont{1.08}
\input{chapter/0_intro}
\input{chapter/1_background}
\input{chapter/2_analysis}
\input{chapter/3_evaluation}
\input{chapter/4_conclusion}
\appendix
\include{appendix/charts}
\include{appendix/lists}
\include{appendix/bib}
% =============================================================================
% \backmatter
\newpage
\thispagestyle{empty}
\begin{center}
\vspace*{5em}
\huge\textbf{Declaration of Academic Integrity}\\
\end{center}
\vspace{2em}
I hereby declare that I have written the present work myself and did not use any sources
or tools other than the ones indicated.
\vspace{4em}
\begin{minipage}{\linewidth}
\centering
\begin{tabular}{p{11.5em}C{20em}}
Datum: & ...................................................................\\
& \centering (Signature)\\
\end{tabular}
\end{minipage}
\end{document}