On hardening problems in critical infrastructure systems

Mathematics

• Critical Infrastructure 100%
• Hardening 64%
• Interdependencies 21%
• Damage 17%
• Model 14%
• Optimal Solution 12%
• Communication Networks 8%
• Integer Program 8%
• Linear Program 7%
• Scenarios 6%
• Economics 6%
• Heuristics 6%
• Minimise 5%
• Logic 5%
• NP-complete problem 5%
• Denote 4%
• Performance 4%
• Operator 3%

Business & Economics

• Critical Infrastructure 70%
• Interdependencies 9%
• Damage 9%
• Optimal Solution 8%
• NP-complete 6%
• Linear Program 5%
• Communication Networks 5%
• Integer 5%
• Operator 4%
• Heuristics 4%
• Logic 3%
• Scenarios 3%
• Economics 2%
• Performance 1%

Engineering & Materials Science

• Critical infrastructures 61%
• Hardening 47%
• Telecommunication networks 7%
• Computational complexity 6%
• Economics 5%