我正在使用 \documentclass[twocolumn]{svjour3} 为 Springer 期刊撰写一篇论文。期刊格式要求摘要的标题（即“摘要”一词，而不是文章的标题）独立出现在摘要文本的左上角，如下所示：
“ 抽象的
SNOW-V 是 Ekdahl 等人在 IACR ToSC 2019(3) 上提出的流密码，目的是部署为 5G 系统中的加密原语。流密码提供 256 位安全性，并已准备好在后量子时代部署，根据经验法则（由于 Grover 算法），量子安全性将随着经典安全参数的平方根而变化。”
在我的代码中，标题“摘要”与摘要文本一起位于开头，如下所示：
“抽象的Lorem ipsum dolor sit amet，consectetuer adipiscing elit。 Ut purus elit，vestibulum ut，placerat ac，adipiscing vitae，felis。 Curabitur dictum gravida mauris。我是自由人，不是无辜的人，我是自我意识，我是伟大人物。 Donec 车辆停在路边。佩伦特斯克居民在悲伤中度过余生，并遭受欺骗和诽谤。 Mauris ut leo。 Cras viverra metus rhoncus sem。
我怎样才能像第一种情况一样定位标题“摘要”？下面是我的代码：
%%%%%%%%%%%%%%%%%%%%%%% file template.tex %%%%%%%%%%%%%%%%%%%%%%%%%
%
% This is a general template file for the LaTeX package SVJour3
% for Springer journals. Springer Heidelberg 2010/09/16
%
% Copy it to a new file with a new name and use it as the basis
% for your article. Delete % signs as needed.
%
% This template includes a few options for different layouts and
% content for various journals. Please consult a previous issue of
% your journal as needed.
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% First comes an example EPS file -- just ignore it and
% proceed on the \documentclass line
% your LaTeX will extract the file if required
\begin{filecontents*}{example.eps}
%!PS-Adobe-3.0 EPSF-3.0
%%BoundingBox: 19 19 221 221
%%CreationDate: Mon Sep 29 1997
%%Creator: programmed by hand (JK)
%%EndComments
gsave
newpath
20 20 moveto
20 220 lineto
220 220 lineto
220 20 lineto
closepath
2 setlinewidth
gsave
.4 setgray fill
grestore
stroke
grestore
\end{filecontents*}
%
\RequirePackage{fix-cm}
%
%\documentclass{svjour3} % onecolumn (standard format)
%\documentclass[smallcondensed]{svjour3} % onecolumn (ditto)
%\documentclass[smallextended]{svjour3} % onecolumn (second format)
\documentclass[twocolumn]{svjour3} % twocolumn
%
\smartqed % flush right qed marks, e.g. at end of proof
%
\usepackage{graphicx}
%
\usepackage{mathptmx} % use Times fonts if availab
% etc.
%
% please place your own definitions here and don't use \def but
% \newcommand{}{}
%
% Insert the name of "your journal" with
% \journalname{myjournal}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%burada itibaren ekledim%%%%%%%%%%%%%%%%%%
\usepackage{cite}
\usepackage{amsmath,amssymb,amsfonts}
\usepackage{graphicx}
\usepackage{textcomp}
\usepackage{cuted}
\usepackage{nccmath}
\usepackage{mathtools}
\usepackage{tikz}
\usepackage{adjustbox}
\usepackage[utf8]{inputenc}
\usepackage{newunicodechar}
\usepackage{booktabs}
\usepackage{lipsum}
\usepackage{scalerel}
\usetikzlibrary{svg.path}
\usepackage{newunicodechar}
\newunicodechar{→}{$\to$}
\usepackage{forest}
\usetikzlibrary{trees}
\usetikzlibrary{arrows}
\usepackage{multirow}
\usepackage[section]{placeins}
\usepackage{algorithm}
\usepackage{algpseudocode}
\usepackage{algorithmicx}
\usepackage{fixmath}
\algdef{SE}[DOWHILE]{Do}{doWhile}{\algorithmicdo}[1]{\algorithmicwhile\ #1}%
\usepackage{multicol}
\usepackage{lipsum}
\usepackage{scrtime}
% fnpct instead of footmisc:
\usepackage[dont-mess-around]{fnpct}
% patch \maketitle:
\usepackage{etoolbox}
\newcommand*{\affaddr}[1]{#1} % No op here. Customize it for different styles.
\newcommand*{\affmark}[1][*]{\textsuperscript{#1}}
\usepackage[misc,geometry]{ifsym}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{document}
\title{Title of the Article}
\author{%
Author 1 Name Surname \protect\affmark[1, 2] \and Author 2 Name Surname\affmark[1]
}
\authorrunning{Esra Yeniaras \and Murat Cenk}
%\authorrunning{Short form of author list} % if too long for running head
\institute{
\Letter $ ~~~$Author 1 Name Surname \\
[email protected] \\ \\ % \\
% \emph{Present address:} of F. Author % if needed
%\and
$~~~~~~~$ Author 2 Name Surname \at
$~~~~~~~$ [email protected]\\ \\
$~~~~~$ \affaddr{\affmark[1] Institution 1, Colorado,USA}\\ \\
$~~~~~$ \affaddr{\affmark[2] Instituton 2 , Ontario, CANADA}\\
%\affaddr{\LaTeX\ University}%
}
\date{Received: date / Accepted: date}
% The correct dates will be entered by the editor
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\twocolumn[
\begin{@twocolumnfalse}
\maketitle
\begin{abstract}
\lipsum
\keywords{bla1 \and bla2 \and bla3.}
\end{abstract}
\end{@twocolumnfalse}
]
\section{Introduction}
\label{intro}
\lipsum
\end{document}
答案1
奇怪的是，期刊不提供这种现成的功能。我只需在摘要开头添加一个段落分隔符（使用类似以下内容\leavevmode\par）：
\twocolumn[
\begin{@twocolumnfalse}
\maketitle
\begin{abstract}
\leavevmode\par\lipsum
\keywords{bla1 \and bla2 \and bla3.}
\end{abstract}
\end{@twocolumnfalse}
]