\documentclass[tikz]{standalone}
%\usepackage{tikz}
\usetikzlibrary{
%	calc,
	shapes,
%	fit,
	positioning,
%	patterns
}
\usepackage{beamerarticle}

\definecolor{stdcolor}{RGB}{0,164,164}



\begin{document}
\newcommand{\znode}[5]{
	\node[right=of #2,#3,minimum width=#4,minimum height=1cm,node distance=0] (#1) {#5};
}

\begin{tikzpicture}[node distance=0.5cm,
		v/.style={rectangle, minimum height=0.5cm, minimum width=1cm,draw},
		d/.style={diamond,draw},
		r/.style={rounded rectangle,minimum height=0.5cm, minimum width=1cm,draw},
		u/.style={circle,fill},
		]


\node (n1) [r] {};

\node (n2) [v,below=of n1] {};

\node (n3) [v,below=of n2] {};

\node (d1) [d,below=of n3] {};

\node (n5) [v,below=of d1] {};

\node (n6) [v,below=of n5] {};

\node (u1) [u,below=of n6] {};

\node (n7) [v,below=of u1] {};

\node (n8) [r,below=of n7] {};


\draw[-latex] (n1) -- (n2);
\draw[-latex] (n2) -- (n3);
\draw (n3) -- (d1);
\draw[-latex]  (d1)  -- node[right] {A1} (n5);
\draw (n5) -- (n6);
\draw[-latex] (n6) -- (n7);
\draw[-latex] (n7) -- (n8);
%\draw[-latex] (n8) -- (n9);

\node[v, left=of n5] (n10) {};
%\node[v, below=of n10] (n11) {};
\node[below=of n10,yshift=-0.5cm] (e) {};



\draw (e) arc [start angle=-90, end angle=-25,radius=0.5cm];
\draw (e) arc [start angle=270, end angle=205,radius=0.5cm];
\draw[-latex] (n10) -- (e.center);

\draw[-latex] (d1)  -| node[above,near start] {A2} (n10);
%\draw[-latex] (n10) -- (n11);



%\node[v, right=of n6] (n12) {};
\node[v,  right=of n5] (n13) {};
\node[v, above=of n13] (n14) {};

\draw[-latex] (u1) -| (n13);
%\draw[-latex] (n12) -- (n13);
\draw[-latex] (n13) -- (n14);
\draw[-latex] (n14) -- ++(0,1.5) -- node[below] {R} ++(-1.25,0) -- (n3.45);
%\draw
\end{tikzpicture}
\end{document}