483492.fig.0018a
(a)
483492.fig.0018b
(b)
483492.fig.0018c
(c)
483492.fig.0018d
(d)
Figure 18: (The periodic blow-up wave is bifurcated from the periodic wave). The varying process for the graph of when , , , , and , where , , , , and (a) . (b) . (c) . (d) .