我下载了一个模板来写研究论文。这是一个多列（两列）模板，但由于多列（伪代码和其他表格），这个模板无法工作（除了文本和图片外，不显示任何内容）。我将多列文档切换为两列文档，伪代码和表格现在可以正常工作了。但在摘要之后，介绍显示在旁边，摘要之后整个页面都是空白的，我正在分享图片和代码。
代码如下
\documentclass[multicolumn]{article}
\usepackage{amsfonts,amssymb,amsbsy,textcomp,marvosym,picins,amsmath,caption,threeparttable,amsthm,subfigure,float,lastpage,lscape,algorithm,algpseudocode}
\usepackage{eurosym,mathrsfs,fancyhdr,CJK,multicol,graphics,indentfirst,color,bm,upgreek,booktabs,graphicx,multirow,warpcol}
\usepackage{epstopdf}
%\usepackage[noend]{algorithm}
%\usepackage[noend]{algorithmic}
%\usepackage[lined,algonl,boxed]{algorithm2e}
\looseness=-1
%------------Page layout and margin and Headrule-------------
\headsep=5mm \headheight=4mm \topmargin=0cm \oddsidemargin=-0.5cm
\evensidemargin=-0.5cm \marginparwidth=0pt \marginparsep= 0pt
\marginparpush=0pt \textheight=23.1cm \textwidth=17.5cm \footskip=8mm
\columnsep=7mm \setlength{\doublerulesep}{0.1pt}
\footnotesep=3.5mm\arraycolsep=2pt
\font\tenrm=cmr10
%===========================================================
\def\footnoterule{\kern 1mm \hrule width 10cm \kern 2mm}
\def\rmd{{\rm d}} \def\rmi{{\rm i}} \def\rme{{\rm e}}
\def\sj#1{$^{[#1]}$}\def\lt{\left}\def\rt{\right}
\renewcommand{\captionfont}{\footnotesize}
\renewcommand\tablename{\bf \footnotesize Table}
\renewcommand\figurename{\footnotesize Fig.\!\!}
\captionsetup{labelsep=period}%
\captionsetup[longtable]{labelsep=period}%
\allowdisplaybreaks
\sloppy
\renewcommand{\headrulewidth}{0pt}
\catcode`@=11
\def\title#1{\vspace{3mm}\begin{flushleft}\vglue-.1cm\Large\bf\boldmath\protect\baselineskip=18pt plus.2pt minus.1pt #1
\end{flushleft}\vspace{1mm} }
\def\author#1{\begin{flushleft}\normalsize #1\end{flushleft}\vspace*{-4pt} \vspace{3mm}}
\def\address#1#2{\begin{flushleft}\vglue-.35cm${}^{#1}$\small\it #2\vglue-.35cm\end{flushleft}\vspace{-2mm}\par}
\def\jz#1#2{{$^{\footnotesize\textcircled{\tiny #1}}$\let\thefootnote\relax\footnotetext{\!\!$^{\footnotesize\textcircled{\tiny #1}}$#2}}}
\catcode`@=11
\def\section{\@startsection{section}{1}{\z@}%
%{-3.5ex \@plus -1ex \@minus -.2ex}%
{-3ex \@plus -.3ex \@minus -.2ex}%
{2.2ex \@plus.2ex}%
{\normalfont\normalsize\protect\baselineskip=14.5pt plus.2pt minus.2pt\bfseries}}
\def\subsection{\@startsection{subsection}{2}{\z@}%
%{-3.25ex\@plus -1ex \@minus -.2ex}%
{-3ex\@plus -.2ex \@minus -.2ex}%
{2ex \@plus.2ex}%
{\normalfont\normalsize\protect\baselineskip=12.5pt plus.2pt minus.2pt\bfseries}}
\def\subsubsection{\@startsection{subsubsection}{3}{\z@}%
%{-3.25ex\@plus -1ex \@minus -.2ex}%
{-2.2ex\@plus -.21ex \@minus -.2ex}%
{1.4ex \@plus.2ex}
{\normalfont\normalsize\protect\baselineskip=12pt plus.2pt minus.2pt\sl}}
\def\proofname{{\indent \it Proof.}}
%===========================================================���ϲ���
\pagestyle{fancy}
\fancyhf{}% ����ҳüҳ��
\fancyhead[LO]{\small\sl Shortened Title Within 45 Characters}%
\fancyhead[RO]{\small\thepage}
\fancyhead[LE]{\small\thepage}
\fancyhead[RE]{\small\sl J. Comput. Sci. \& Technol.}
\setcounter{page}{1}
\begin{document}
\begin{CJK*}{GBK}{song}
\thispagestyle{empty}
\vspace*{-13mm}
\noindent {\small Journal of computer science and technology: Instruction for authors.
JOURNAL OF COMPUTER SCIENCE AND TECHNOLOGY}
%===========================================================
\vspace*{2mm}
\title{AYATDROID: A Scalable Malware Detection Approach}
\let\thefootnote\relax\footnotetext{{}\\[-4mm]\indent\ Regular Paper}
\noindent {\small\bf Abstract} \quad {\small \textcolor{blue}{Please provide an abstract of 100 to 250 words. The abstract should clearly state the nature and significance of the paper. It must not include undefined abbreviations, mathematical expressions or bibliographic references.}}
\vspace*{3mm}
\noindent{\small\bf Keywords} \quad {\small keyword, keyword, keyword, keyword,
keyword [\textcolor{blue}{Keywords should closely reflect the topic and should optically
characterize the paper. Please use about 3$\sim $5 keywords or phrases in
alphabetical order separated by commas.}]}
\vspace*{4mm}
\end{CJK*}
\baselineskip=18pt plus.2pt minus.2pt
\parskip=0pt plus.2pt minus0.2pt
\begin{twocolumn}
\section{Introduction}
The Android Operating System is used on more than 2.8 billion smartphones. Only last year, over 1.05 billion Android phones were shipped. Among mobile phone users, over 75\% use Android smartphones due to their low prices and open-source operating systems, which make up the most popular operating system. Smartphones are no longer just for communications; they have evoloved into one of lifes necessities. An average person spends 5 to 6 hours daily on mobile devices, including browsing, social media, and online purchasing apps. The Android platform offers a free play store to download applications.
\label{last-page}
\end{twocolumn}
\label{last-page}
\end{document}
答案1
使用
\begin{multicols}{2} % changed <<<<<<<<<<<<<<<<<<<<<
\section{Introduction}
The Android Operating System is used on more than 2.8 billion smartphones. Only last year, over 1.05 billion Android phones were shipped. Among mobile phone users, over 75\% use Android smartphones due to their low prices and open-source operating systems, which make up the most popular operating system. Smartphones are no longer just for communications; they have evoloved into one of lifes necessities. An average person spends 5 to 6 hours daily on mobile devices, including browsing, social media, and online purchasing apps. The Android platform offers a free play store to download applications.
\label{last-page}
\end{multicols}
而不是\begin{twocolumn} 该包multicol已经加载。
更新在后续问题之后。
在环境内不可能使用浮点数multicols。
添加包float并使用强制--非浮动--H。
\begin{multicols}{2}
\section{Introduction}
The Android Operating System is used on more than 2.8 billion smartphones. Only last year, over 1.05 billion Android phones were shipped. Among mobile phone users, over 75\% use Android smartphones due to their low prices and open-source operating systems, which make up the most popular operating system. Smartphones are no longer just for communications; they have evoloved into one of lifes necessities. An average person spends 5 to 6 hours daily on mobile devices, including browsing, social media, and online purchasing apps. The Android platform offers a free play store to download applications.
\begin{algorithm}[H]
\caption{Clone Detection}\label{alg:Clone}
\begin{algorithmic}[1]
\Procedure{Clone Detection}{$a,b$}
\State $r\gets a\bmod b$
\While{$r\not=0$}
\State $a\gets b$
\State $b\gets r$
\State $r\gets a\bmod b$
\EndWhile\label{euclidendwhile}
\State \textbf{return} $b$
\EndProcedure
\end{algorithmic}
\end{algorithm}
The improved Paillier Cryptosystem for a secured data transmission is seen in the Table \ref{tab:PCS}.
\begin{table}[H]
\centering
\caption{A table}\label{tab:PCS}
\begin{tabular}{cc}
A& B\\
C& D
\end{tabular}
\end{table}
Some text.
\begin{figure}[H]
\centering
\includegraphics[width=0.5\columnwidth]{example-image}
\caption{A figure}
\end{figure}
Among mobile phone users, over 75\% use Android smartphones due to their low prices and open-source operating systems, which make up the most popular operating system. The Algorithm \ref{alg:Clone} provides a method to detect clones.
\end{multicols}