\begin{figure}[ht!]\r
\centering\r
\begin{tabular}{@{}cr@{}}\r
- \includegraphics[width=75mm]{figure1a.tiff} & \raisebox{3.25cm}{(a)} \\\r
- \includegraphics[width=75mm]{figure1b.tiff} & \raisebox{2.75cm}{(b)}\r
+ \includegraphics[width=75mm]{figure1a.eps} & \raisebox{3.25cm}{(a)} \\\r
+ \includegraphics[width=75mm]{figure1b.eps} & \raisebox{2.75cm}{(b)}\r
\end{tabular}\r
\caption{(a) Perimeter coverage of sensor node 0 and (b) finding the arc of\r
$u$'s perimeter covered by $v$.}\r
\r
\begin{figure*}[t!]\r
\centering\r
-\includegraphics[width=127.5mm]{figure2.tiff} \r
+\includegraphics[width=127.5mm]{figure2.eps} \r
\caption{Maximum coverage levels for perimeter of sensor node $0$.}\r
\label{expcm}\r
\end{figure*} \r
\r
\begin{figure}[h!]\r
\centering\r
-\includegraphics[width=62.5mm]{figure3.tiff} \r
+\includegraphics[width=62.5mm]{figure3.eps} \r
\caption{Sensing range outside the WSN's area of interest.}\r
\label{ex4pcm}\r
\end{figure} \r
\r
\begin{figure}[t!]\r
\centering\r
-\includegraphics[width=80mm]{figure4.tiff} \r
+\includegraphics[width=80mm]{figure4.eps} \r
\caption{PeCO protocol.}\r
\label{fig2}\r
\end{figure} \r