\documentclass[11pt,twocolumn]{article}
\columnsep=0.33in
\topmargin=-0.25in
\textheight=8.75in
\oddsidemargin=-0.25in
\evensidemargin=-0.25in
\textwidth=6.8in
% No page numbers:
\pagestyle{empty}

\begin{document}

% Have title and abstract with narrow interline spacing:
\baselineskip 12pt

\title{
    {\LARGE Sample Paper}}

\author{{\bf Shigeru Chiba}\\
        \\
       {\it University of Tsukuba}\\
       {\it Tsukuba, Ibaraki 305-8573, Japan}}

% The following suppresses the date:
\date{}
\maketitle
% No page number on title page (the global empty declaration takes effect
% on second page):
\thispagestyle{empty}

\begin{abstract}
  Abstract body.
\end{abstract}

% Regular interline spacing:
\baselineskip 14pt

\section{Introduction}

Body of the paper.

\section{My Great Idea}

Idea.

\section{Conclusion}

Conclusion.

\end{document}