\documentclass[12pt]{article} %%%%% preamble            %%%%%
\usepackage[dvipdfm]{graphicx}

%\textwidth 16.3cm	% the text frame size
%\textheight 23cm
%\oddsidemargin 5mm	% for centering
%\evensidemargin 13mm	% for centering
%\topmargin 1mm
%\pagestyle{empty}
\pagestyle{plain}
\begin{document}		%%%%% the main routine begins here	%%%%%
%\baselinestretch 2
%\flushbottom
%\large				% character size
%\setlength{\baselineskip}{1cm}	% line spacing
\bibliographystyle{jplain} % for bibliography
\input{title}	% title, abstract 
\maketitle
\begin{quote}
\input{abstract}
\end{quote}
%%%%\tableofcontents		%% contents, lists
%%%%\listoffigures
%%%%\listoftables
%\pagenumbering{arabic}

\input{0}	% sections

\bibliography{ref}
\end{document}