\documentclass[english,12pt]{article}
-\usepackage[utf8x]{inputenc}
+\usepackage{fontspec}
+\setmainfont{FreeSerif}
+\setsansfont{FreeSans}
+\setmonofont{FreeMono}
\usepackage{fancyhdr}
-%\usepackage[pdftex]{graphicx}
\usepackage{graphicx}
\usepackage[bf]{caption}
\usepackage{rotating}
\usepackage{multirow}
-\usepackage{textcomp}
-\usepackage{mathrsfs}
-\usepackage{amssymb}
\usepackage{setspace}
\usepackage{txfonts}
-\usepackage[light,all]{draftcopy}
%\usepackage{fancyref}
\usepackage{acronym}
\usepackage{array}
\usepackage{longtable}
\usepackage{geometry}
\usepackage{pdflscape}
+\usepackage[backend=biber,natbib=true,hyperref=true,style=numeric-comp]{biblatex}
%\usepackage[noblocks]{authblk}
\usepackage[hyperfigures,backref,bookmarks,colorlinks]{hyperref}
%\usepackage[hyperfigures,bookmarks,colorlinks,citecolor=black,filecolor=black,linkcolor=black,urlcolor=black]{hyperref}
-\usepackage[sectionbib,numbers,sort&compress]{natbib}
\usepackage[nomargin,inline,draft]{fixme}
\usepackage[x11names,svgnames]{xcolor}
\usepackage{texshade}
\usepackage{tikz}
+\usepackage{nameref}
+\usepackage{zref-xr,zref-user}
\newenvironment{narrow}[2]{%
\begin{list}{}{%
\setlength{\topsep}{0pt}%