Journal
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
Volume 108, Issue 10, Pages 3838-3841Publisher
NATL ACAD SCIENCES
DOI: 10.1073/pnas.1009440108
Keywords
percolation; power grid
Categories
Funding
- ETH Competence Center Coping with Crises in Complex Socio-Economic Systems (CCSS) [CH1-01-08-2]
- Israel Science Foundation
- Office of Naval Research
- Defence Threat Reduction Agency
- EU
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico
- Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior
- Fundacao Cearense de Apoio ao Desenvolvimento Cientifico
- Financiadora de Estudos e Projetos
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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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