\usepackage{ifthen}
\usepackage{color}
\usepackage{algorithm2e}
-\usepackage[hyperfirst=true,nogroupskip,nonumberlist,xindy]{glossaries}
+
\section{Introduction}
%\input{intro}
-\section{Preliminaries}
+ \section{\uppercase{Preliminaries}}\label{sec:preliminaries}
\input{preliminaries}
\section{Stopping Time}