\documentclass[11pt,twoside]{article}\makeatletter

\IfFileExists{xcolor.sty}%
  {\RequirePackage{xcolor}}%
  {\RequirePackage{color}}
\usepackage{colortbl}
\usepackage{wrapfig}
\usepackage{ifxetex}
\ifxetex
  \usepackage{fontspec}
  \usepackage{xunicode}
  \catcode`⃥=\active \def⃥{\textbackslash}
  \catcode`❴=\active \def❴{\{}
  \catcode`❵=\active \def❵{\}}
  \def\textJapanese{\fontspec{Noto Sans CJK JP}}
  \def\textChinese{\fontspec{Noto Sans CJK SC}}
  \def\textKorean{\fontspec{Noto Sans CJK KR}}
  \setmonofont{DejaVu Sans Mono}
  
\else
  \IfFileExists{utf8x.def}%
   {\usepackage[utf8x]{inputenc}
      \PrerenderUnicode{–}
    }%
   {\usepackage[utf8]{inputenc}}
  \usepackage[english]{babel}
  \usepackage[T1]{fontenc}
  \usepackage{float}
  \usepackage[]{ucs}
  \uc@dclc{8421}{default}{\textbackslash }
  \uc@dclc{10100}{default}{\{}
  \uc@dclc{10101}{default}{\}}
  \uc@dclc{8491}{default}{\AA{}}
  \uc@dclc{8239}{default}{\,}
  \uc@dclc{20154}{default}{ }
  \uc@dclc{10148}{default}{>}
  \def\textschwa{\rotatebox{-90}{e}}
  \def\textJapanese{}
  \def\textChinese{}
  \IfFileExists{tipa.sty}{\usepackage{tipa}}{}
\fi
\def\exampleFont{\ttfamily\small}
\DeclareTextSymbol{\textpi}{OML}{25}
\usepackage{relsize}
\RequirePackage{array}
\def\@testpach{\@chclass
 \ifnum \@lastchclass=6 \@ne \@chnum \@ne \else
  \ifnum \@lastchclass=7 5 \else
   \ifnum \@lastchclass=8 \tw@ \else
    \ifnum \@lastchclass=9 \thr@@
   \else \z@
   \ifnum \@lastchclass = 10 \else
   \edef\@nextchar{\expandafter\string\@nextchar}%
   \@chnum
   \if \@nextchar c\z@ \else
    \if \@nextchar l\@ne \else
     \if \@nextchar r\tw@ \else
   \z@ \@chclass
   \if\@nextchar |\@ne \else
    \if \@nextchar !6 \else
     \if \@nextchar @7 \else
      \if \@nextchar (8 \else
       \if \@nextchar )9 \else
  10
  \@chnum
  \if \@nextchar m\thr@@\else
   \if \@nextchar p4 \else
    \if \@nextchar b5 \else
   \z@ \@chclass \z@ \@preamerr \z@ \fi \fi \fi \fi
   \fi \fi  \fi  \fi  \fi  \fi  \fi \fi \fi \fi \fi \fi}
\gdef\arraybackslash{\let\\=\@arraycr}
\def\@textsubscript#1{{\m@th\ensuremath{_{\mbox{\fontsize\sf@size\z@#1}}}}}
\def\Panel#1#2#3#4{\multicolumn{#3}{){\columncolor{#2}}#4}{#1}}
\def\abbr{}
\def\corr{}
\def\expan{}
\def\gap{}
\def\orig{}
\def\reg{}
\def\ref{}
\def\sic{}
\def\persName{}\def\name{}
\def\placeName{}
\def\orgName{}
\def\textcal#1{{\fontspec{Lucida Calligraphy}#1}}
\def\textgothic#1{{\fontspec{Lucida Blackletter}#1}}
\def\textlarge#1{{\large #1}}
\def\textoverbar#1{\ensuremath{\overline{#1}}}
\def\textquoted#1{‘#1’}
\def\textsmall#1{{\small #1}}
\def\textsubscript#1{\@textsubscript{\selectfont#1}}
\def\textxi{\ensuremath{\xi}}
\def\titlem{\itshape}
\newenvironment{biblfree}{}{\ifvmode\par\fi }
\newenvironment{bibl}{}{}
\newenvironment{byline}{\vskip6pt\itshape\fontsize{16pt}{18pt}\selectfont}{\par }
\newenvironment{citbibl}{}{\ifvmode\par\fi }
\newenvironment{docAuthor}{\ifvmode\vskip4pt\fontsize{16pt}{18pt}\selectfont\fi\itshape}{\ifvmode\par\fi }
\newenvironment{docDate}{}{\ifvmode\par\fi }
\newenvironment{docImprint}{\vskip 6pt}{\ifvmode\par\fi }
\newenvironment{docTitle}{\vskip6pt\bfseries\fontsize{22pt}{25pt}\selectfont}{\par }
\newenvironment{msHead}{\vskip 6pt}{\par}
\newenvironment{msItem}{\vskip 6pt}{\par}
\newenvironment{rubric}{}{}
\newenvironment{titlePart}{}{\par }

\newcolumntype{L}[1]{){\raggedright\arraybackslash}p{#1}}
\newcolumntype{C}[1]{){\centering\arraybackslash}p{#1}}
\newcolumntype{R}[1]{){\raggedleft\arraybackslash}p{#1}}
\newcolumntype{P}[1]{){\arraybackslash}p{#1}}
\newcolumntype{B}[1]{){\arraybackslash}b{#1}}
\newcolumntype{M}[1]{){\arraybackslash}m{#1}}
\definecolor{label}{gray}{0.75}
\def\unusedattribute#1{\sout{\textcolor{label}{#1}}}
\DeclareRobustCommand*{\xref}{\hyper@normalise\xref@}
\def\xref@#1#2{\hyper@linkurl{#2}{#1}}
\begingroup
\catcode`\_=\active
\gdef_#1{\ensuremath{\sb{\mathrm{#1}}}}
\endgroup
\mathcode`\_=\string"8000
\catcode`\_=12\relax

\usepackage[a4paper,twoside,lmargin=1in,rmargin=1in,tmargin=1in,bmargin=1in,marginparwidth=0.75in]{geometry}
\usepackage{framed}

\definecolor{shadecolor}{gray}{0.95}
\usepackage{longtable}
\usepackage[normalem]{ulem}
\usepackage{fancyvrb}
\usepackage{fancyhdr}
\usepackage{graphicx}
\usepackage{marginnote}

\renewcommand{\@cite}[1]{#1}


\renewcommand*{\marginfont}{\itshape\footnotesize}

\def\Gin@extensions{.pdf,.png,.jpg,.mps,.tif}

  \pagestyle{fancy}

\usepackage[pdftitle={Anti-Islanding Strategy for a PV Power Plant},
 pdfauthor={}]{hyperref}
\hyperbaseurl{}

	 \paperwidth210mm
	 \paperheight297mm
              
\def\@pnumwidth{1.55em}
\def\@tocrmarg {2.55em}
\def\@dotsep{4.5}
\setcounter{tocdepth}{3}
\clubpenalty=8000
\emergencystretch 3em
\hbadness=4000
\hyphenpenalty=400
\pretolerance=750
\tolerance=2000
\vbadness=4000
\widowpenalty=10000

\renewcommand\section{\@startsection {section}{1}{\z@}%
     {-1.75ex \@plus -0.5ex \@minus -.2ex}%
     {0.5ex \@plus .2ex}%
     {\reset@font\Large\bfseries}}
\renewcommand\subsection{\@startsection{subsection}{2}{\z@}%
     {-1.75ex\@plus -0.5ex \@minus- .2ex}%
     {0.5ex \@plus .2ex}%
     {\reset@font\Large}}
\renewcommand\subsubsection{\@startsection{subsubsection}{3}{\z@}%
     {-1.5ex\@plus -0.35ex \@minus -.2ex}%
     {0.5ex \@plus .2ex}%
     {\reset@font\large}}
\renewcommand\paragraph{\@startsection{paragraph}{4}{\z@}%
     {-1ex \@plus-0.35ex \@minus -0.2ex}%
     {0.5ex \@plus .2ex}%
     {\reset@font\normalsize}}
\renewcommand\subparagraph{\@startsection{subparagraph}{5}{\parindent}%
     {1.5ex \@plus1ex \@minus .2ex}%
     {-1em}%
     {\reset@font\normalsize\bfseries}}


\def\l@section#1#2{\addpenalty{\@secpenalty} \addvspace{1.0em plus 1pt}
 \@tempdima 1.5em \begingroup
 \parindent \z@ \rightskip \@pnumwidth 
 \parfillskip -\@pnumwidth 
 \bfseries \leavevmode #1\hfil \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}}
\@ifundefined{c@section}{\newcounter{section}}{}
\@ifundefined{c@chapter}{\newcounter{chapter}}{}
\newif\if@mainmatter 
\@mainmattertrue
\def\chaptername{Chapter}
\def\frontmatter{%
  \pagenumbering{roman}
  \def\thechapter{\@roman\c@chapter}
  \def\theHchapter{\roman{chapter}}
  \def\thesection{\@roman\c@section}
  \def\theHsection{\roman{section}}
  \def\@chapapp{}%
}
\def\mainmatter{%
  \cleardoublepage
  \def\thechapter{\@arabic\c@chapter}
  \setcounter{chapter}{0}
  \setcounter{section}{0}
  \pagenumbering{arabic}
  \setcounter{secnumdepth}{6}
  \def\@chapapp{\chaptername}%
  \def\theHchapter{\arabic{chapter}}
  \def\thesection{\@arabic\c@section}
  \def\theHsection{\arabic{section}}
}
\def\backmatter{%
  \cleardoublepage
  \setcounter{chapter}{0}
  \setcounter{section}{0}
  \setcounter{secnumdepth}{2}
  \def\@chapapp{\appendixname}%
  \def\thechapter{\@Alph\c@chapter}
  \def\theHchapter{\Alph{chapter}}
  \appendix
}
\newenvironment{bibitemlist}[1]{%
   \list{\@biblabel{\@arabic\c@enumiv}}%
       {\settowidth\labelwidth{\@biblabel{#1}}%
        \leftmargin\labelwidth
        \advance\leftmargin\labelsep
        \@openbib@code
        \usecounter{enumiv}%
        \let\p@enumiv\@empty
        \renewcommand\theenumiv{\@arabic\c@enumiv}%
	}%
  \sloppy
  \clubpenalty4000
  \@clubpenalty \clubpenalty
  \widowpenalty4000%
  \sfcode`\.\@m}%
  {\def\@noitemerr
    {\@latex@warning{Empty `bibitemlist' environment}}%
    \endlist}

\def\tableofcontents{\section*{\contentsname}\@starttoc{toc}}
\parskip0pt
\parindent1em
\def\Panel#1#2#3#4{\multicolumn{#3}{){\columncolor{#2}}#4}{#1}}
\newenvironment{reflist}{%
  \begin{raggedright}\begin{list}{}
  {%
   \setlength{\topsep}{0pt}%
   \setlength{\rightmargin}{0.25in}%
   \setlength{\itemsep}{0pt}%
   \setlength{\itemindent}{0pt}%
   \setlength{\parskip}{0pt}%
   \setlength{\parsep}{2pt}%
   \def\makelabel##1{\itshape ##1}}%
  }
  {\end{list}\end{raggedright}}
\newenvironment{sansreflist}{%
  \begin{raggedright}\begin{list}{}
  {%
   \setlength{\topsep}{0pt}%
   \setlength{\rightmargin}{0.25in}%
   \setlength{\itemindent}{0pt}%
   \setlength{\parskip}{0pt}%
   \setlength{\itemsep}{0pt}%
   \setlength{\parsep}{2pt}%
   \def\makelabel##1{\upshape ##1}}%
  }
  {\end{list}\end{raggedright}}
\newenvironment{specHead}[2]%
 {\vspace{20pt}\hrule\vspace{10pt}%
  \phantomsection\label{#1}\markright{#2}%

  \pdfbookmark[2]{#2}{#1}%
  \hspace{-0.75in}{\bfseries\fontsize{16pt}{18pt}\selectfont#2}%
  }{}
      \def\TheFullDate{2015 2015-03-15 (revised: 1 Year 2015 15 March 2015)}
\def\TheID{\makeatother }
\def\TheDate{2015 2015-03-15}
\title{Anti-Islanding Strategy for a PV Power Plant}
\author{}\makeatletter 
\makeatletter
\newcommand*{\cleartoleftpage}{%
  \clearpage
    \if@twoside
    \ifodd\c@page
      \hbox{}\newpage
      \if@twocolumn
        \hbox{}\newpage
      \fi
    \fi
  \fi
}
\makeatother
\makeatletter
\thispagestyle{empty}
\markright{\@title}\markboth{\@title}{\@author}
\renewcommand\small{\@setfontsize\small{9pt}{11pt}\abovedisplayskip 8.5\p@ plus3\p@ minus4\p@
\belowdisplayskip \abovedisplayskip
\abovedisplayshortskip \z@ plus2\p@
\belowdisplayshortskip 4\p@ plus2\p@ minus2\p@
\def\@listi{\leftmargin\leftmargini
               \topsep 2\p@ plus1\p@ minus1\p@
               \parsep 2\p@ plus\p@ minus\p@
               \itemsep 1pt}
}
\makeatother
\fvset{frame=single,numberblanklines=false,xleftmargin=5mm,xrightmargin=5mm}
\fancyhf{} 
\setlength{\headheight}{14pt}
\fancyhead[LE]{\bfseries\leftmark} 
\fancyhead[RO]{\bfseries\rightmark} 
\fancyfoot[RO]{}
\fancyfoot[CO]{\thepage}
\fancyfoot[LO]{\TheID}
\fancyfoot[LE]{}
\fancyfoot[CE]{\thepage}
\fancyfoot[RE]{\TheID}
\hypersetup{citebordercolor=0.75 0.75 0.75,linkbordercolor=0.75 0.75 0.75,urlbordercolor=0.75 0.75 0.75,bookmarksnumbered=true}
\fancypagestyle{plain}{\fancyhead{}\renewcommand{\headrulewidth}{0pt}}

\date{}
\usepackage{authblk}

\providecommand{\keywords}[1]
{
\footnotesize
  \textbf{\textit{Index terms---}} #1
}

\usepackage{graphicx,xcolor}
\definecolor{GJBlue}{HTML}{273B81}
\definecolor{GJLightBlue}{HTML}{0A9DD9}
\definecolor{GJMediumGrey}{HTML}{6D6E70}
\definecolor{GJLightGrey}{HTML}{929497} 

\renewenvironment{abstract}{%
   \setlength{\parindent}{0pt}\raggedright
   \textcolor{GJMediumGrey}{\rule{\textwidth}{2pt}}
   \vskip16pt
   \textcolor{GJBlue}{\large\bfseries\abstractname\space}
}{%   
   \vskip8pt
   \textcolor{GJMediumGrey}{\rule{\textwidth}{2pt}}
   \vskip16pt
}

\usepackage[absolute,overlay]{textpos}

\makeatother 
      \usepackage{lineno}
      \linenumbers
      
\begin{document}

             \author[1]{  Esam.Zaki}

             \affil[1]{  }

\renewcommand\Authands{ and }

\date{\small \em Received: 10 February 2015 Accepted: 4 March 2015 Published: 15 March 2015}

\maketitle


\begin{abstract}
        


In this paper: a new strategy of anti-islanding photovoltaic (PV) power plant has been introduced. A new islanding detection strategy depending on power line signaling and control by inverter and numerical relays proposed in the literature. By generating, detecting and comparing between signals on the distribution feeders from the substation to the down-stream Distributed Generation (DG), the subtraction value of two signals at the DG site will be indicator for islanding. The scheme is a remote effective detection technique and more expensive than other techniques. The strategy depends on the embedded system containing the power line signaling and both PV inverters and Numerical(microprocessor based) relays. Inverter technology and control have been discussed.

\end{abstract}


\keywords{anti-islanding, distributed generation, numerical relays, photovoltaic.}

\begin{textblock*}{18cm}(1cm,1cm) % {block width} (coords) 
\textcolor{GJBlue}{\LARGE Global Journals \LaTeX\ JournalKaleidoscope\texttrademark}
\end{textblock*}

\begin{textblock*}{18cm}(1.4cm,1.5cm) % {block width} (coords) 
\textcolor{GJBlue}{\footnotesize \\ Artificial Intelligence formulated this projection for compatibility purposes from the original article published at Global Journals. However, this technology is currently in beta. \emph{Therefore, kindly ignore odd layouts, missed formulae, text, tables, or figures.}}
\end{textblock*}


\let\tabcellsep& 	 	 		 
\section[{Introduction}]{Introduction}\par
he condition of "Islanding" in Distributed Generators (DG) is an electrical phenomenon that occurs when the energy supplied by the power grid is interrupted due to various factors and DG continues energizing some or the entire load.\par
Thus, the power grid stops controlling this isolated part of the distribution system, which contains both loads and generators  {\ref [1]}. Islanding should be anticipated in DG as the grid cannot control the voltage applied to the loads in islanding conditions and uncontrolled reconnection in an isolated DG can damage the generation equipment or hazard workers on grid users, because a line that is supposedly disconnected from any power source can remain active. Islanding detection techniques are explained briefly in  {\ref [2]}.\par
A photovoltaic model has been produced in  {\ref [3]}. A remote technique for islanding detection is chosen. Our problem here is how to face this phenomenon. Firstly by detecting it and then control it. Our strategy here to make a system depending on numerical relays which have lower cost and less panel space besides PV inverter to control this phenomenon.\par
Numerical relays and different types of relays have been introduced in [4]. Power line signaling which is a reliable detection technique has been discussed in  {\ref [5]}. Inverter usage and control concept is explained in  {\ref [6]}. 
\section[{II.}]{II.} 
\section[{Power line Signaling for Islanding Detection}]{Power line Signaling for Islanding Detection}\par
This scheme consists of two devices, a signal generator (SG) and a signal detector (SD). In regular the SG is placed at the substation bus. In case of islanding conditions, opening of switching devices between SG and SD or substation outage, the downstream DG units will trip. Furthermore, the SG can have auxiliary inputs which give flexibility to the system operators when they need the DGs to be shut down. As the signal carrier is the power line itself, the formation of an island can be detected automatically . Fig. \hyperref[fig_0]{1} illustrates the scheme. Checking the presence of the broadcast signal at the signal detector position is the key to the islanding protection. The detection process includes signal extraction and a subsequent signal processing method. A phase to ground channel (B-G) is selected as the detection channel. In order to extract the signal from this voltage waveform, subtraction of two consecutive cycles is used . Mathematically we can describe this subtraction by: Where T is the period of fundamental frequency, 60 Hz, waveform. For the dc component, the first harmonic and the other integer harmonics (for which, T will be an integer multiple of their own period) the previous equation will become:   
\section[{Numerical Relays}]{Numerical Relays}\par
Numerical relays has benefited many years of successful implementation of electromechanical and static relays. We can replace existing electromechanical distance relays by numerical ones partially and economically. A total of fourteen electromechanical relays will be removed of which six distance relays (3 for phase and 3 for ground) and the remaining devices are timers and auxiliary relays  {\ref [4]}.\par
IV. 
\section[{Inverter Specifications}]{Inverter Specifications}\par
An inverter used in grid connected PV systems must satisfy some specifications, which are given by national and international standards. The specifications for the PV module to the inverter, and the inverter enhanced with grid are presented. 
\section[{a) Ambient Temperature}]{a) Ambient Temperature}\par
The PV cell temperature can reach 78 °C on sunny day (irradiance: 1200 W/m2 and ambient temperature: 40 °C). Thus, if the inverter is to be mounted on the rear side of the PV module, it has to withstand a temperature of almost 80 °C. 
\section[{b) Life Time and Reliability}]{b) Life Time and Reliability}\par
The inverter should be maintenance-free during the AC-Module's lifetime. This is desirable while the AC-Module is intended to be a 'plug and play' device, which can be operated by persons without specialized training. The inverter lifetime is then directly specified according to the lifetime of the included PV module. 
\section[{c) Personal safety}]{c) Personal safety}\par
Some countries require a transformer between the inverter and the grid if a DC monitoring device is not included. Other countries demands HPFI-relay (High-Sensitive, Pulsing direct current, earth Fault circuit breaker), if the transformer is omitted. System ground is System ground is not required for the developed inverter, since the inverter is designed to maximum 50V open circuit voltage, c.f. section 3.2.3. Thus, galvanic isolation is not required between the PV module and the grid, when personal safety is the issue. 
\section[{d) PV Module Interface}]{d) PV Module Interface}\par
Nominal power, starting power, maximum open-circuit voltage, maximum power point tracking, maximum short circuit current, input ripple and over voltage protection must be taken into consideration when setting up the specifications of PV module interface. Also inverter grid interface issues such as voltage, maximum power, standby losses, DC current, frequency, current harmonics, inrush current and grounding have been considered  {\ref [6]}. 
\section[{e) Description of Inverter Performance}]{e) Description of Inverter Performance}\par
A primary objective of this work is to develop an inverter performance model applicable to all commercial inverters used in photovoltaic power systems, providing a versatile numerical algorithm that accurately relates the inverter's ac-power output to the dc-power input. The model developed requires a set of measured performance parameters (coefficients). The complexity and the accuracy of the performance model are "progressive" in the sense that the accuracy of the model can be improved in steps, as more detailed test data are available. Manufacturers' specification sheets provide initial performance parameters, field measurements during system operation provide additional parameters and accuracy, and detailed performance measurements as conducted by recognized testing laboratories  {\ref [7]} provide further refinement of parameters used in the model. A good inverter must have a system for detecting ground fault errors in the PV array and has an active safely algorithm to protect against islanding phenomenon. Such inverter detects the grid voltage that it must feed in automatically depending on the voltage and the phase angle between L1-N and L2-N, the inverter determines whether a wrong grid voltage is detected giving an error message.\par
V. 
\section[{Islanding Modelling}]{Islanding Modelling}\par
Depending on matlab/Simulink model and pss/e program, and referring to model in [5], figures  {\ref (3,} {\ref 4,} {\ref 5,} {\ref 6)} show the behavior of voltage, frequency, active power and reactive power during tripping and a PV power plant became islanded. From the previous figures, it is clear that there are some oscillations and due to inverter, the system was able to be stable again. 
\section[{VI.}]{VI.} 
\section[{Conclusion}]{Conclusion}\par
To control islanding phenomenon and making the system protection adaptive and more stable, the strategy depends on three effective elements depending on embedded systems in their construction, which making them adaptive and gives the system stability enough to face islanding phenomenon. These elements are:\par
1. Remote islanding detection technique depending on power line signaling. 2. Adaptive relays, especially numerical relays which have their own settings, characteristics and logic functions. These functions changed on line a timely manner by means of externally signals or control action.\par
3. PV inverters : which have a main effect for stabilizing the isolated PV power plant which is out of control of utility grid. Using a software package and by addressing each element in power system utility, we can monitor and control the system easy. 
\section[{VII.}]{VII.} 
\section[{Recommendations}]{Recommendations}\par
In order to achieve a high performance PV power plant, automatic data acquisition and monitoring technology is essential. This allows the plant to be monitored and faults can then be detected and rectified before they have an appreciable effect on production. Some recommendations must be taken into consideration to get a good strategy facing islanding phenomenon as follow:\par
? Backup system for inverters to control the system long time as possible.\begin{figure}[htbp]
\noindent\textbf{1}\includegraphics[]{image-2.png}
\caption{\label{fig_0}Figure 1 :}\end{figure}
 \begin{figure}[htbp]
\noindent\textbf{2}\includegraphics[]{image-3.png}
\caption{\label{fig_1}Figure( 2}\end{figure}
 \begin{figure}[htbp]
\noindent\textbf{2}\includegraphics[]{image-4.png}
\caption{\label{fig_2}Figure 2 :}\end{figure}
 \begin{figure}[htbp]
\noindent\textbf{}\includegraphics[]{image-5.png}
\caption{\label{fig_3}F}\end{figure}
 \begin{figure}[htbp]
\noindent\textbf{35}\includegraphics[]{image-6.png}
\caption{\label{fig_4}Figure 3 :Figure 5 :}\end{figure}
 \begin{figure}[htbp]
\noindent\textbf{}\includegraphics[]{image-7.png}
\caption{\label{figure7}}\end{figure}
 \begin{figure}[htbp]
\noindent\textbf{}\includegraphics[]{image-8.png}
\caption{\label{figure8}}\end{figure}
 			\footnote{© 2015 Global Journals Inc. (US)Global Journal of Researches in Engineering} 			\footnote{© 20 15 Global Journals Inc. (US)} 		 		\backmatter  			  				\begin{bibitemlist}{1}

\end{bibitemlist}
 			 		 	 
\end{document}
