We evaluate, for the US case, the costs and benefits of three security measures designed to
reduce the likelihood of a direct replication of the 9/11 terrorist attacks. To do so, we assess …

The US Congress asked the National Academy of Sciences to conduct a technical study on
lessons learned from the Fukushima Daiichi nuclear accident for improving safety and …

Costbenefit analysis (CBA) is commonly applied as a tool for deciding on risk protection.
With CBA, one can identify risk mitigation strategies that lead to an optimal tradeoff between …

Water supply network security issues such as vandalism are of concern but have received
less than proper attention in the past. Clearly water infrastructure is recognised as critical; …

The Transportation Security Administration (TSA) has been deploying Advanced Imaging
Technologies (AITs) that are full-body scanners to inspect a passenger's body for concealed …

" Terrorism prevention--superseding the programs and activities previously known as
Countering Violent Extremism (CVE)--policies seek to broaden the options available to …

Improvised explosive devices (IEDs) are a type of unconventional explosive weapon that
can be deployed in a variety of ways, and can cause loss of life, injury, and property damage …

Risk measures play significant roles in determining the magnitude of risks. The traditional
risk measures consider only the consequence (C) and the probability (P) and ignore the …

The chemical terrorist attack is an unconventional form of terrorism with vast scope of
influence, strong concealment, high technical means and severe consequences. Chemical …

The idea of layering of protective measures is integral to aviation security doctrine. It is
intuitive that one layer could compensate for limitations of another, and that multiple layers …