% OR98 DOCUMENT STYLE -- 1 Apr 1998
%
% ----------------------------------
% For Auhors of the OR98 Proceedings
% ----------------------------------
%
% The Publisher wishes to receive camera--ready manuscripts which comply
% with a precisely specified format. This style file ensures that your 
% paper will be formatted according to the Publisher's format prescription. 
% For this reason Authors are definitely asked not to load other style
% files and to avoid redefinitions which have an influence on page and/or 
% document format. Below please find the rules for the usage of this
% style file. Authors not following these rules have the risk that their
% paper unfortunately cannot be published, just for this reason.
%
% (1) In the preamble of your document please exclusively use: 
%                 \documentstyle{or98}
%     or          \documentstyle[psfig]{or98}.
% (2) For achieving a correctly placed title please use
%     the \title{Title of your paper}, 
%         \author{list of authors with affiliation, separated by \\}, 
%     and subsequently the \maketitle command.
%     Example: \title{A paper} 
%              \author{A.\ Author, University of Acity \\
%                      B.\ Author, University of Bcity}
%              \maketitle
% (3) Please write the title of an English-language paper in lowercase
%     with initial capitals on all words except short conjunctions, articles
%     and prepositions (with four letters or less).
% (4) Please do not put addresses etc. into the list of authors
%     below the title. For a corresponding author the \adcor command can
%     be used. Example usage:
%                 \adcor{A.\ Author\\
%                        Institute of OR, University of Acity\\
%                        Curved Drive 13\\
%                        12345 Acity, Acountry}
%     Please put the `corresponding author' at the end of the text, 
%     before the References.
% (5) Please use the \begin{abstract}...\end{abstract} environment for your
%     abstract.
% (6) For including figures into your paper please exclusively use PSFIG.
% (7) Please do not load/use other style files, in particular please
%     do not use `german.sty'.
% (8) Please avoid footnotes, especially in the title and author part.
%     Please notice that the Publisher may cut off footnotes without 
%     notifying the authors. Thanks should be put into a separate paragraph 
%     at the end of the paper.
% (9) If you write your document using plain TeX please ensure that it
%     can be compiled also under LaTeX with this style file.
%
%     We are very sorry for these `draconic' rules and ask for your
%     support and understanding.
%
\typeout{------------------------------------------------------------}
\typeout{OR98 Document Style `OR98' <1 Apr 98> based on:}
\typeout{Standard Document Style `article' <14 Jan 92> by L. Lamport.}
\typeout{------------------------------------------------------------}

\def\partname{Part}
\def\contentsname{Contents}
\def\listfigurename{List of Figures}
\def\listtablename{List of Tables}
\def\refname{References}
\def\indexname{Index}
\def\figurename{Figure}
\def\tablename{Table}
\def\abstractname{Summary}
\def\corauthor{Corresponding Author}

% ----------- default is 12pt
\def\@ptsize{2}
\@namedef{ds@10pt}{\def\@ptsize{0}}
\@namedef{ds@11pt}{\def\@ptsize{1}}
\@namedef{ds@12pt}{\def\@ptsize{2}}

% ----------- infeasible options neglected
\def\errhead{
\typeout{***********************************************************************}
\typeout{>>>>>>>>>>>>>>>> OR98 error message <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<}
\typeout{***********************************************************************}
}
\def\errfoot{
\typeout{***********************************************************************}
\typeout{********** Your style option has been neglected ***********************}
\typeout{***********************************************************************}
}
\def\errmess#1{
\errhead
\errmessage{Please do not use: #1}
\errfoot
}

\def\ds@twocolumn{\errmess{`TWOCOLUMN'}}
\def\ds@titlepage{\errmess{`TITLEPAGE'}}
\def\ds@leqno{\errmess{`LEQNO'}}
\def\ds@fleqn{\errmess{`FLEQN'}}
\def\ds@aiv{\errmess{`A4'}}
\def\ds@array{\errmess{`ARRAY'}}
\def\ds@anysize{\errmess{`ANYSIZE'}}
\def\ds@twoside{\errmess{`TWOSIDE'}}
\def\ds@float{\errmess{`FLOAT'}}
\def\ds@encal{\errmess{`ENCAL'}}
\def\ds@amsmath{\errmess{`AMSMATH'}}
\def\ds@amssymb{\errmess{`AMSSYMB'}}
\def\ds@amsthm{\errmess{`AMSTHM'}}
\def\ds@mathptm{\errmess{`MATHPTM'}}
\def\ds@times{\errmess{`TIMES'}}
\def\ds@english{\errmess{`ENGLISH'}}
\def\ds@german{\errmess{`GERMAN'}}
\def\ds@t1enc{\errmess{`T1ENC'}}
\def\ds@tcilatex{\errmess{`TCILATEX'}}

\@options

% ----------- if not 12pt then the run will be aborted
\ifnum \@ptsize=2
\input art1\@ptsize.sty
\else
\errmess{other than '12pt'}\end{document}
\fi

% ----------- 18x26.5cm typing area defined (on A4: 21.0x29.7cm);
% ----------- printer driver offset is set off.
\setlength{\oddsidemargin}{0pt}
\addtolength{\oddsidemargin}{-1.04cm}
\setlength{\evensidemargin}{\oddsidemargin}
\setlength{\marginparwidth}{12mm}
\setlength{\marginparsep}{0pt}

\setlength{\topmargin}{0pt}
\addtolength{\topmargin}{-.9cm}
\setlength{\headheight}{0pt}
\setlength{\headsep}{0pt}
\setlength{\topskip}{0pt}

\setlength{\footheight}{0pt}
\setlength{\footskip}{0pt}

\setlength{\textwidth}{18.0cm}
\setlength{\textheight}{26.5cm}

% ----------- adjust vertical size
\setbox2=\hbox{\normalsize y}
\addtolength{\textheight}{-\dp2}
\addtolength{\textheight}{-1mm}

% ----------- paragraph indentation none
\setlength{\parindent}{0cm}
\setlength{\parskip}{0cm}

\setlength{\abovedisplayskip}{3mm}
\setlength{\belowdisplayskip}{\abovedisplayskip}
\setlength{\abovedisplayshortskip}{0mm}
\setlength{\belowdisplayshortskip}{2mm}

\def\labelenumi{\theenumi.}
\def\theenumi{\arabic{enumi}}

\def\labelenumii{(\theenumii)}
\def\theenumii{\alph{enumii}}
\def\p@enumii{\theenumi}

\def\labelenumiii{\theenumiii.}
\def\theenumiii{\roman{enumiii}}
\def\p@enumiii{\theenumi(\theenumii)}

\def\labelenumiv{\theenumiv.}
\def\theenumiv{\Alph{enumiv}}
\def\p@enumiv{\p@enumiii\theenumiii}

\def\labelitemi{$\m@th\bullet$}
\def\labelitemii{\bf --}
\def\labelitemiii{$\m@th\ast$}
\def\labelitemiv{$\m@th\cdot$}

\def\verse{\let\\=\@centercr
  \list{}{\itemsep\z@ \itemindent -1.5em\listparindent \itemindent
          \rightmargin\leftmargin\advance\leftmargin 1.5em}\item[]}
\let\endverse\endlist

\def\quotation{\list{}{\listparindent 1.5em
    \itemindent\listparindent
    \rightmargin\leftmargin \parsep \z@ plus\p@}\item[]}
\let\endquotation=\endlist

\def\quote{\list{}{\rightmargin\leftmargin}\item[]}
\let\endquote=\endlist

\def\descriptionlabel#1{\hspace\labelsep \bf #1}
\def\description{\list{}{\labelwidth\z@ \itemindent-\leftmargin
       \let\makelabel\descriptionlabel}}

\let\enddescription\endlist

\def\theequation{\arabic{equation}}

\arraycolsep 5pt

\tabcolsep 6pt

\arrayrulewidth .4pt
\doublerulesep 2pt

\tabbingsep \labelsep

\skip\@mpfootins = \skip\footins

\fboxsep = 3pt

\fboxrule = .4pt

\newcounter{part}
\newcounter {section}
\newcounter {subsection}[section]
\newcounter {subsubsection}[subsection]
\newcounter {paragraph}[subsubsection]
\newcounter {subparagraph}[paragraph]

\def\thepart          {\Roman{part}}
% ----------- a period is placed after the section number
% ----------- space to section header text is narrower
\def\thesection       {\arabic{section}.\hspace*{-.15cm}}
\def\thesubsection    {\thesection\hspace*{.15cm}\arabic{subsection}\hspace*{-.1cm}}
\def\thesubsubsection {\thesubsection\hspace*{.1cm}.\arabic{subsubsection}\hspace*{-.1cm}}
\def\theparagraph     {\thesubsubsection\hspace*{.1cm}.\arabic{paragraph}}
\def\thesubparagraph  {\theparagraph.\arabic{subparagraph}}

% ----------- (sub)section headers resized
\def\section{\@startsection {section}{1}{\z@}{-2.25ex plus-.2ex minus
    -.2ex}{1.5ex plus.2ex}{\reset@font\large\bf}}
\def\subsection{\@startsection{subsection}{2}{\z@}{-2.25ex plus-.2ex
    minus-.2ex}{1.5ex plus.2ex}{\reset@font\normalsize\bf}}
\def\subsubsection{\@startsection{subsubsection}{3}{\z@}{-2.25ex plus
 -.2ex minus-.2ex}{1.5ex plus.2ex}{\reset@font\normalsize\bf}}
\def\paragraph{\@startsection
     {paragraph}{4}{\z@}{2.25ex plus.2ex minus.2ex}{-1em}{\reset@font
     \normalsize\bf}}
\def\subparagraph{\@startsection
     {subparagraph}{4}{\parindent}{2.25ex plus.2ex minus
     .2ex}{-1em}{\reset@font\normalsize\bf}}

\def\part{\par
   \addvspace{4ex}
   \@afterindentfalse
   \secdef\@part\@spart}

% ----------- part header resized
\def\@part[#1]#2{\ifnum \c@secnumdepth >\m@ne
        \refstepcounter{part}
        \addcontentsline{toc}{part}{\thepart
        \hspace{1em}#1}\else
      \addcontentsline{toc}{part}{#1}\fi
   {\parindent \z@ \raggedright
    \interlinepenalty \@M
    \ifnum \c@secnumdepth >\m@ne
      \large \bf \partname~\thepart%   THEN Print '\partname' and
      \par\nobreak
    \fi
    \huge \bf
    #2%
    \markboth{}{}\par
   }\nobreak
   \vskip 3ex
   \@afterheading
  }

\def\@spart#1{{\parindent \z@ \raggedright
    \interlinepenalty \@M
    \huge \bf
    #1\par}
    \nobreak
    \vskip 3ex
    \@afterheading
  }

\def\@pnumwidth{1.55em}
\def\@tocrmarg {2.55em}
\def\@dotsep{4.5}
\setcounter{tocdepth}{3}

\def\tableofcontents{\section*{\contentsname
        \@mkboth{\uppercase{\contentsname}}{\uppercase{\contentsname}}}%
  \@starttoc{toc}}

\def\l@part#1#2{\addpenalty{\@secpenalty}%
   \addvspace{2.25em plus\p@}%
   \begingroup
   \@tempdima 3em
     \parindent \z@ \rightskip \@pnumwidth
     \parfillskip -\@pnumwidth
     {\large \bf
     \leavevmode
     #1\hfil \hbox to\@pnumwidth{\hss #2}}\par
     \nobreak
   \endgroup}

\def\l@section#1#2{\addpenalty{\@secpenalty}% good place for page break
   \addvspace{1.0em plus\p@}%
   \@tempdima 1.5em
   \begingroup
     \parindent \z@ \rightskip \@pnumwidth
     \parfillskip -\@pnumwidth
     \bf
     \leavevmode
      \advance\leftskip\@tempdima
      \hskip -\leftskip
     #1\nobreak\hfil \nobreak\hbox to\@pnumwidth{\hss #2}\par
   \endgroup}

\def\l@subsection{\@dottedtocline{2}{1.5em}{2.3em}}
\def\l@subsubsection{\@dottedtocline{3}{3.8em}{3.2em}}
\def\l@paragraph{\@dottedtocline{4}{7.0em}{4.1em}}
\def\l@subparagraph{\@dottedtocline{5}{10em}{5em}}

\def\listoffigures{\section*{\listfigurename
    \@mkboth{\uppercase{\listfigurename}}{\uppercase{\listfigurename}}}%
  \@starttoc{lof}}

\def\l@figure{\@dottedtocline{1}{1.5em}{2.3em}}

\def\listoftables{\section*{\listtablename\@mkboth
   {\uppercase{\listtablename}}{\uppercase{\listtablename}}}%
  \@starttoc{lot}}
\let\l@table\l@figure

% ----------- spacing between bibitems reduced
\def\thebibliography#1{
\section*{\refname\@mkboth
  {\uppercase{\refname}}{\uppercase{\refname}}}\list
  {\@biblabel{\arabic{enumiv}}}%
  {\settowidth\labelwidth{\@biblabel{#1}}%
  \setlength{\itemsep}{.2\itemsep}\setlength{\parsep}{.5\parsep}
    \leftmargin\labelwidth
    \advance\leftmargin\labelsep
    \usecounter{enumiv}%
    \let\p@enumiv\@empty
    \def\theenumiv{\arabic{enumiv}}}%
    \def\newblock{\hskip .11em plus.33em minus.07em}%
    \sloppy\clubpenalty4000\widowpenalty4000
    \sfcode`\.=1000\relax}

\def\endthebibliography{%
  \def\@noitemerr{\@warning{Empty `thebibliography' environment}}%
  \endlist}

\newif\if@restonecol

\def\theindex{\@restonecoltrue\if@twocolumn\@restonecolfalse\fi
\columnseprule \z@
\columnsep 35\p@\twocolumn[\section*{\indexname}]%
    \@mkboth{\uppercase{\indexname}}{\uppercase{\indexname}}%
    \thispagestyle{plain}\parindent\z@
    \parskip\z@ plus.3\p@\relax\let\item\@idxitem}

\def\@idxitem{\par\hangindent 40\p@}

\def\subitem{\par\hangindent 40\p@ \hspace*{20\p@}}

\def\subsubitem{\par\hangindent 40\p@ \hspace*{30\p@}}

\def\endtheindex{\if@restonecol\onecolumn\else\clearpage\fi}

\def\indexspace{\par \vskip 10\p@ plus5\p@ minus3\p@\relax}

% ----------- length of footnoterule changed
\def\footnoterule{\kern-3\p@
 \hrule width 4cm
  \kern 2.6\p@}

\long\def\@makefntext#1{\parindent 1em\noindent
            \hbox to1.8em{\hss$\m@th^{\@thefnmark}$}#1}

\setcounter{topnumber}{2}
\def\topfraction{.7}
\setcounter{bottomnumber}{1}
\def\bottomfraction{.3}
\setcounter{totalnumber}{3}
\def\textfraction{.2}
\def\floatpagefraction{.5}
\setcounter{dbltopnumber}{2}
\def\dbltopfraction{.7}
\def\dblfloatpagefraction{.5}

\long\def\@makecaption#1#2{%
   \vskip 10\p@
   \setbox\@tempboxa\hbox{#1: #2}%
   \ifdim \wd\@tempboxa >\hsize
       #1: #2\par
     \else
       \hbox to\hsize{\hfil\box\@tempboxa\hfil}%
   \fi}

\newcounter{figure}
\def\thefigure{\@arabic\c@figure}

\def\fps@figure{tbp}
\def\ftype@figure{1}
\def\ext@figure{lof}
\def\fnum@figure{\figurename~\thefigure}
\def\figure{\@float{figure}}
\let\endfigure\end@float
\@namedef{figure*}{\@dblfloat{figure}}
\@namedef{endfigure*}{\end@dblfloat}

\newcounter{table}
\def\thetable{\@arabic\c@table}

\def\fps@table{tbp}
\def\ftype@table{2}
\def\ext@table{lot}
\def\fnum@table{\tablename~\thetable}
\def\table{\@float{table}}
\let\endtable\end@float
\@namedef{table*}{\@dblfloat{table}}
\@namedef{endtable*}{\end@dblfloat}

% ----------- use the `maketitle' command also to achieving a larger
% ----------- interline spacing in the document
\def\maketitle{\par
 \begingroup
   \def\thefootnote{\fnsymbol{footnote}}%
   \def\@makefnmark{\hbox
       to\z@{$\m@th^{\@thefnmark}$\hss}}%
   \if@twocolumn
     \twocolumn[\@maketitle]%
     \else \newpage
     \global\@topnum\z@
     \@maketitle\fi\thispagestyle{empty}\@thanks
 \endgroup
 \setcounter{footnote}{0}%
 \let\maketitle\relax
 \let\@maketitle\relax
 \gdef\@thanks{}\gdef\@author{}\gdef\@title{}\let\thanks\relax}

% ----------- perform upward shift;
% ----------- title and author names resized, date dropped
\def\@maketitle{\newpage
\null
\setlength{\topsep}{0pt}
\setlength{\partopsep}{0pt}
\vspace*{-.6cm}
\begin{center}%
 {\Large\bf \@title\par}%
  \vskip 1.5em
  {\large
   \lineskip .5em
   \begin{tabular}[t]{c} \@author
   \end{tabular}\par}%
\end{center}%
\ifdim \textheight<700pt
\errhead
\errmessage{Paper format has been changed, probably A4 style used}
\end{document}
\fi
\vskip 1.2em\par}

% ----------- abstractname placed in the first line of abstract
% ----------- interline spacing is smaller for the abstract
\def\abstract{
\renewcommand{\baselinestretch}{0.95}
\if@twocolumn
\section*{\abstractname}%
\else\begin{trivlist}\item \normalsize
\noindent{\bf \abstractname:}
\fi}

\def\endabstract{\if@twocolumn\else\end{trivlist}\fi}

\mark{{}{}}

\if@twoside
 \def\ps@headings{\let\@mkboth\markboth
  \def\@oddfoot{}\def\@evenfoot{}%       No feet.
  \def\@evenhead{\rm \thepage\hfil \sl \leftmark}%        Left heading.
  \def\@oddhead{{\sl \rightmark}\hfil \rm\thepage}% Right heading.
  \def\sectionmark##1{\markboth {\uppercase{\ifnum \c@secnumdepth >\z@
    \thesection\hskip 1em\relax \fi ##1}}{}}%
  \def\subsectionmark##1{\markright {\ifnum \c@secnumdepth >\@ne
          \thesubsection\hskip 1em\relax \fi ##1}}}
\else
 \def\ps@headings{\let\@mkboth\markboth
  \def\@oddfoot{}\def\@evenfoot{}%     No feet.
  \def\@oddhead{{\sl \rightmark}\hfil \rm\thepage}% Heading.
  \def\sectionmark##1{\markright {\uppercase{\ifnum \c@secnumdepth >\z@
    \thesection\hskip 1em\relax \fi ##1}}}}
\fi

\def\ps@myheadings{\let\@mkboth\@gobbletwo
 \def\@oddhead{{\sl\rightmark}\hfil \rm\thepage}%
 \def\@oddfoot{}\def\@evenhead{\rm \thepage\hfil\sl\leftmark}%
 \def\@evenfoot{}\def\sectionmark##1{}\def\subsectionmark##1{}}

\def\today{\ifcase\month\or
  January\or February\or March\or April\or May\or June\or
  July\or August\or September\or October\or November\or December\fi
  \space\number\day, \number\year}

% ----------- pagestyle is empty
\ps@empty
\pagenumbering{arabic}

% ----------- pagestyle macro emptied
\def\pagestyle#1{\null}

\setbox4=\hbox{\bf \corauthor:}
\dimen4=\wd4
\advance\dimen4 by 1em 
\dimen2=\textwidth
\advance\dimen2 by -\dimen4
\advance\dimen2 by -.12cm

%\renewcommand{\baselinestretch}{.8} 
%\setlength{\baselineskip}{.5\normalbaselineskip}

% ----------- corresponding author
\def\adcor#1{\par
\vskip 1.5em
\begin{minipage}[t]{\dimen4}
{\bf \corauthor:} \end{minipage}\
\begin{minipage}[t]{\dimen2}
\setlength{\baselineskip}{.8\normalbaselineskip} #1 \end{minipage}
\par\vskip 1.5em\relax}

\renewcommand{\baselinestretch}{1.29}
\flushbottom


\endinput