Cascading-Failures Effect on Heterogeneous Internet of Things Systems under Targeted Selective Attack

Figure 3

The change of percolation threshold in different parameters. The solutions of equations (42) and (43) are shown. When p < pc, there is no intersection between curve and straight line. When p > pc, the curve and straight line have two intersections. When p = pc, the curve is tangent to the straight line. pc is the network percolation threshold.

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