\documentclass[10pt, a4paper, twocolumn, notitlepage]{article}
\usepackage[utf8]{inputenc}
\usepackage{lipsum}

\begin{document}

\title{\Huge\textbf{Computer Ethics Paper}}
\author{Andrea Gussoni}
\author{
Andrea Gussoni\\
{Politecnico di Milano}\\
}
%\date{February 2016}

\maketitle

\input{sections/abstract}
\input{sections/introduction}
\input{sections/sections}
\input{sections/conclusions}
\input{sections/references}

\end{document}