\documentclass[final,hyperref={pdfpagelabels=false}]{beamer}
\mode<presentation>
  {
    % \usetheme{Berlin}
    \usetheme{Dreuw}
  }
  \usepackage{times}
  \usepackage{amsmath,amsthm, amssymb, latexsym}
  \boldmath
  \usepackage[english]{babel}
  \usepackage[latin1]{inputenc}
  \usepackage[orientation=portrait,size=a0,scale=1.4,debug]{beamerposter}
  \usepackage{lipsum}
  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%5
  \graphicspath{{figures/}}
  \title[Fancy Posters]{Making Really Fancy Posters with \LaTeX}
  \author[Goo \& Lee]{SW Lee and CS Kim}
  \institute[CNU \& CNU]{Chungnam National University }
  \date{Jul. 31th, 2007}
  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%5
    \begin{document}
        \begin{frame}
        \begin{block}{\large Abstracts}
          \lipsum[1-2]
        \end{block}
        \begin{block}{\large Font size}
          \centering
          {\tiny tiny}\par
          {\scriptsize scriptsize}\par
          {\footnotesize footnotesize}\par
          {\normalsize normalsize}\par
          {\large large}\par
          {\Large Large}\par
          {\LARGE LARGE}\par
          {\veryHuge veryHuge}\par
          {\VeryHuge VeryHuge}\par
          {\VERYHuge VERYHuge}\par
        \end{block}
        \begin{columns}[t]
          \begin{column}{.48\linewidth}
            \begin{block}{Introduction}
              \lipsum[1-2]
            \end{block}
            \begin{block}{Methods}
              \begin{itemize}
              \item some items
              \item some items
              \item some items
              \item some items
              \end{itemize}
            \end{block}
          \end{column}
        \begin{column}{.48\linewidth}
        
        \begin{block}{Discussion}
          \begin{itemize}
          \item some items
          \item some items
          \item some items
          \item some items
          \end{itemize}
          \lipsum[1-1]
        \end{block}
        
        \begin{block}{Conclusion}
          \begin{itemize}
          \item some items and $\alpha=\gamma, \sum_{i}$
          \item some items
          \item some items
          \item some items
          \end{itemize}
          $$\alpha=\gamma, \sum_{i}$$
        \end{block}
        \end{column}
        \end{columns}
    \end{frame}
\end{document}
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