Аннотация
Terrorist attacks on transportation networks have traumatized modern
societies. With a single blast, it has become possible to paralyze
airline traffic, electric power supply, ground transportation or
Internet communication. How and at which cost can one restructure the
network such that it will become more robust against a malicious attack?
We introduce a new measure for robustness and use it to devise a method
to mitigate economically and efficiently this risk. We demonstrate its
efficiency on the European electricity system and on the Internet as
well as on complex networks models. We show that with small changes in
the network structure (low cost) the robustness of diverse networks can
be improved dramatically whereas their functionality remains unchanged.
Our results are useful not only for improving significantly with low
cost the robustness of existing infrastructures but also for designing
economically robust network systems.
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