\begin{tikzpicture}

%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%
%% My Customized Styles
%%

\tikzset{
    pics/trident/.style={
        code={
            \draw[->] (0,0) -- (45:0.5);
            \draw[->] (0,0) -- (0:{0.5/sqrt(2)});
            \draw[->] (0,0) -- (-45:0.5);
            \fill(0,0) circle[radius=2pt];
        }
    },
    >={Triangle},
    circ/.style={
        circle,
        draw,
        minimum size=1.6em,
        inner sep=1pt
    },
    truncated/.style={
        path picture={
            \draw ([xshift=-#1]path picture bounding box.north)
               -- ([xshift=-#1]path picture bounding box.south)
                  ([xshift=#1]path picture bounding box.north)
               -- ([xshift=#1]path picture bounding box.south);
        }
    },
    truncated/.default=1ex,
    Dotted/.style={% https://tex.stackexchange.com/a/101263/194703
        line cap=round,
        dash pattern=on 0pt off 4.5\pgflinewidth,
        shorten >=1ex,
        shorten <=1ex
    }
}

%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%
%% Drawing
%%

\begin{scope}[local bounding box=fit]
    \node[circ] (i) {$\boldsymbol{i}$};
    \draw[<-] (i)
        -- ++ (160:1.2) coordinate (aux1);
    \draw[<-] (i)
        -- ++ (-160:1.2) coordinate (aux2);
    \draw[thick] (i)
        -- ++ (20:1.2) coordinate (aux3) pic[pos=1,sloped,thin]{trident};
    \draw[thick] (i)
        -- ++ (-20:1.2) coordinate (aux4) pic[pos=1,sloped,thin]{trident};
    \path (aux1)
        -- node(Ini){In$(i)$} (aux2) (aux3)
        -- node{Out$(i)$}     (aux4) (aux3)
        ++ (0,0.7) coordinate (aux6);
    \node[below=1.1cm of Ini,circ](lc1){$\phantom{i}$};
    \draw[thick] (lc1)
        -- node[above]{$e$} node[below=0.5ex]{$U_eR_e$}
        ++ (00:1) coordinate(aux5) pic[pos=1,sloped,thin]{trident};
    \path coordinate[right=7mm of aux5] (lc2)
           node[above=0.4em of lc2,circ](lc3){$\phantom{i}$}
           node[below=0.4em of lc2,circ](lc4){$\phantom{i}$}; 
\end{scope}

\begin{scope}[on background layer]
    \node[%Network cloud
        cloud,cloud puffs=6,draw,
        fit=(fit),fill=white,inner sep=-1em,
        label=above:Network
    ] (cloud) {};
\end{scope}

\path (cloud.20)
    -- ++ (20:1.5)   node[circ](1) {$\boldsymbol{1}$}
                     coordinate[pos=0.4] (auxTR)
                     node[above=1em]{Sinks $\mathcal{T}$};
\draw[->] (cloud) -- (1);
\path (cloud.0)
    -- ++ (0:1.5)    node[circ](t) {$\boldsymbol{t}$}
                     node[right=1em]{$\boldsymbol{Y}_{\beta(t)}$};
\draw[->] (cloud) -- (t);
\path (cloud.-20)
    -- ++ (-20:1.5)  node[circ,truncated=1.1ex](T) {$\mathcal{T}$}
                     coordinate[pos=0.4] (auxBR);
\draw[->] (cloud) -- (T);

\draw[line width=1.8pt,Dotted] (auxTR) -- (auxBR);

\path (cloud.160)
    -- ++ (160:1.5)  node[circ](1') {$\boldsymbol{1}$}
                     node[above=1em]{Sources $\mathcal{T}$}
                     coordinate[pos=0.5] (auxTL) ;
\draw (1'.-20)
    -- ++ (-20:0.7)  pic[pos=1,sloped]{trident};
\path (cloud.180)
    -- ++ (180:1.7)  node[circ](s) {$\boldsymbol{s}$}
                     node[left=1em]{$Y_s$};
\draw (s.00)
    -- ++ (00:0.7)   pic[pos=1,sloped]{trident};
\path (cloud.-160)
    -- ++ (-160:1.5) node[circ,truncated=1.1ex](S) {$\mathcal{S}$}
                     coordinate[pos=0.5] (auxBL)  ;
\draw (S.20)
    -- ++ (20:0.7)  pic[pos=1,sloped]{trident};

\draw[line width=1.8pt,Dotted] (auxTL) -- (auxBL);

%%
%%
%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\end{tikzpicture}

%Local variables:
% coding: utf-8
% mode: text
% mode: rst
% End:
% vim: fileencoding=utf-8 filetype=tex :