\documentclass[a4paper,twocolumn]{jarticle}
\usepackage[dviout]{graphicx}
\usepackage{amsmath}
\usepackage{float}
\usepackage[T1]{fontenc}
\usepackage{textcomp}
\usepackage{tabularx}
\usepackage{ascmac}
\usepackage{verbatim}
\usepackage{amsmath}


%\documentclass[11pt,a4paper]{jsarticle}

%\documentclass[twocolumn]{jarticle}
%\usepackage{amsmath,amssymb}
%\usepackage{bm}
%\usepackage{graphicx}
%\usepackage{ascmac}
%
%\setlength{\textwidth}{\fullwidth}
%\setlength{\textheight}{42\baselineskip}
%\addtolength{\textheight}{\topskip}
%\setlength{\voffset}{-0.2in}
%\setlength{\topmargin}{0pt}
%\setlength{\headheight}{0pt}
%\setlength{\headsep}{0pt}
%
%\newcommand{\divergence}{\mathrm{div}\,}  %�_�C�o�[�W�F���X
%\newcommand{\grad}{\mathrm{grad}\,}  %�O���f�B�G���g
%\newcommand{\rot}{\mathrm{rot}\,}  %���[�e�[�V����
%
\title{hoge}
\author{piyo}
\date{hogera}
\begin{document}
\maketitle
\section{fuga}

\begin{figure}
  \includegraphics[width = .5\textwidth]{pic/fuga.eps}
  \caption{}
  \label{fuga}
\end{figure}
\end{document}

