\documentclass[english,german]{scrartcl}
\usepackage[latin1]{inputenc}
\usepackage{geometry}
\geometry{verbose,a4paper,tmargin=1.75cm,bmargin=2cm,lmargin=2cm,rmargin=2cm,headheight=0.8cm,headsep=0.5cm,footskip=0.5cm}
\usepackage{babel}
\usepackage{url}
\urlstyle{same}
\newcommand\email{\begingroup \urlstyle{same}\Url}\usepackage{graphicx}
\usepackage{units}
\usepackage{tabularx}
\usepackage{wasysym} % enable use of \permil instead of \textperthousand
\usepackage{marvosym}
\usepackage{arabtex}
\usepackage{hyphenat}
\usepackage{booktabs}
\usepackage{mdwlist}
\renewcommand{\thefootnote}{\relax}
\usepackage{index}
\newindex{key}{kdx}{knd}{Keywords}
\newindex{author}{idx}{ind}{Authors}
\usepackage{fancyhdr}
\pagestyle{fancy}
\renewcommand{\headrulewidth}{0pt}
\fancyfoot{}
\usepackage{ifpdf}
\ifpdf
%\usepackage[activate]{pdfcprot}
%\usepackage[owner=Tapioka, print=true, copy=true, edit=false, annotate=false,set]{pdfcrypt}
%encryption: not supported any more (since pdftex 1.10)
\usepackage[pdftex]{thumbpdf}
\usepackage[pdftex]{hyperref}
\hypersetup{pdftitle={ the Changes of Maize World Price and Measuring Welfare Impacts on ~iranian Meats Market  ~ },pdfauthor={S.n.mousavi S.n.mous, F.taheri F.taheri},pdfsubject={Tropentag 2010: Abstract},pdfkeywords={Keywords: Maize Market, Meat Market, Poverty Indices.‎, Price Transmission, Welfare Impacts},pdfpagemode=None,colorlinks=true}
\else
\usepackage{ae}
\usepackage{textcomp}
\fi
\begin{document}
\ifpdf
\parbox[b]{2.5cm}{\resizebox*{2.5cm}{!}{\includegraphics{dtt2010.jpg}}}
\else
\parbox[b]{2.5cm}{\resizebox*{2.5cm}{!}{\includegraphics{dtt2010.eps}}}
\fi
\hfill
\parbox[b]{13.4cm}{\centering \large{\textbf{Tropentag, September 14-16, 2010, Zurich}}\\[1ex] \Large{``World Food System  ---\\A Contribution from Europe''\\[2ex]}}
\hspace{0.1cm}
\begin{center}
\Large{\textbf{ the Changes of Maize World Price and Measuring Welfare Impacts on ~iranian Meats Market  ~ \footnote{\textbf{Contact Address:} S.n.mousavi S.n.mous, Islamic Azad University,marvdasht Branch, Assistance Professor of Agricultural Economics, Marvdasht, 465~Marvdasht, Iran, \mbox{e-mail}: \email{mousavi_sn@yahoo.com}}\\[0.8ex]}}
\normalsize{\textsc{S.n.mousavi S.n.mous$^{1}$, F.taheri F.taheri$^{2}$}}
\end{center}
\begin{itemize*}
\item[]{\small{\textit{$^{1}$Islamic Azad University,marvdasht Branch, Assistance Professor of Agricultural Economics, Iran}}}
\item[]{\small{\textit{$^{2}$Islamic Azad University,marvdasht Branch, Faculty Member of Agricultural Economics, }}}
\end{itemize*}
\index[author]{S.n.mous, S.n.mousavi}
\index[author]{F.taheri, F.taheri}
\begin{center}
\vspace{1.1cm}
\textbf{Abstract}
\begin{abstract}
\normalsize{
In this study impact of changes in maize world price ~on meat market was evaluated using simulation by multi market framework. Changes in meat ~prices obtained by simulation was used in evaluation of changes in welfare and poverty indices ~including head count ratio, poverty gap and poverty severity.Price transmission from world market to ~domestic one was also considered using the different specifications for symmetric and ~asymmetric conditions. Effect of maize world price on society groups including producers, ~consumers as well as poverty indices was investigated under two conditions of symmetric and ~asymmetric price transmission. The results showed an asymmetric price transmission from world ~market to domestic one in short run and a symmetric transmission in long run, indicating that in ~short run price increase is transmitted more complete than price decrease to domestic market. ~Based on the results in meat and poultry market it was found that increased (decreased) maize ~world price affects producers positively (negatively). However, the response of welfare changes ~to price changes was more vigorous in long run as compared to short run, so that in higher price ~changes the difference between long run and short run welfare changes tends to decrease rapidly. ~In the case of consumers it was found that increase (decrease) in maize world price results in ~decreased (increased) welfare. Like the meat producers the welfare effects was evaluated more ~considerable in short run as compared to long run. It was also found that the response of the ~welfare changes to maize world price changes is more noticeable as compared to short run. ~Society welfare as sum of producers and consumer welfare showed tendency to decrease in long ~run as maize world price assumed to increase. Effect of maize world price decrease also was ~found positive on society welfare. Increased maize world market results in considerable increase ~in poverty indices especially poverty gap and poverty severity indices while decreased maize ~world price has a thin impact on poverty indices improvement. An asymmetric pattern is ~perceptible in welfare changes and changes in poverty indices under scenarios of increase and ~decrease in maize world price.  ~}

\vspace{0.5cm}
\end{abstract}
\end{center}
\noindent \textbf{Keywords:} Keywords: Maize Market, Meat Market, Poverty Indices.~, Price Transmission, Welfare Impacts
\index[key]{Keywords: Maize Market}
\index[key]{Meat Market}
\index[key]{Poverty Indices.~}
\index[key]{Price Transmission}
\index[key]{Welfare Impacts}
\end{document}