如何将块放置在投影仪海报的顶部

Question

为什么当我在 Beamer Poster 中写入空块时，该块被放置在框架的中心。如何将该块放置在框架的顶部，即使该块是空的。

\documentclass[final]{beamer}
  \mode<presentation>
  {
% you can chose your theme here:
\usetheme{Berlin}
% further beamerposter themes are available at 
% http://www-i6.informatik.rwth-aachen.de/~dreuw/latexbeamerposter.php
}
\usepackage{grffile}
\usepackage[english]{babel}
\usepackage[latin1]{inputenc}
\usepackage{amsmath,amsthm, amssymb, latexsym}

\usepackage[absolute,overlay]{textpos}
\usepackage[orientation=portrait,size=a0,scale=1.4,debug]{beamerposter}

\begin{document}
\begin{frame}{}
\begin{columns}[t]
    \begin{column}{0.3\textwidth}
        \begin{block}{\Large Introduction}
        \end{block}
    \end{column}
    \begin{column}{0.3 \textwidth}
        \begin{block}{\Large Result}
        \end{block}
    \end{column}
    \begin{column}{0.3 \textwidth}
        \begin{block}{\Large Simulasi}
        \end{block}
    \end{column}
\end{columns}
\end{frame}
\end{document}

Answer 1

使用位置说明符表示 [t]也\begin{frame}像

\begin{frame}[t]{}

代码：

\documentclass[final]{beamer}
  \mode<presentation>
  {
% you can chose your theme here:
\usetheme{Berlin}
% further beamerposter themes are available at
% http://www-i6.informatik.rwth-aachen.de/~dreuw/latexbeamerposter.php
}
\usepackage{grffile}
\usepackage[english]{babel}
\usepackage[latin1]{inputenc}
\usepackage{amsmath,amsthm, amssymb, latexsym}

\usepackage[absolute,overlay]{textpos}
\usepackage[orientation=portrait,size=a0,scale=1.4,debug]{beamerposter}

\begin{document}
\begin{frame}[t]{}                     %%% <--- here
\begin{columns}[t]
    \begin{column}{0.3\textwidth}
        \begin{block}{\Large Introduction}
        \end{block}
    \end{column}
    \begin{column}{0.3 \textwidth}
        \begin{block}{\Large Result}
        \end{block}
    \end{column}
    \begin{column}{0.3 \textwidth}
        \begin{block}{\Large Simulasi}
        \end{block}
    \end{column}
\end{columns}
\end{frame}
\end{document}