Using Sensors to Interdict Nuclear Material Smuggling
نویسندگان
چکیده
We describe a stochastic network interdiction model for locating sensors that detect nuclear material. A nuclear material smuggler selects a path through a transportation network that maximizes the probability of avoiding detection. An interdictor installs sensors to minimize that maximum probability. We formulate this problem as a bi-level stochastic mixed-integer program, and then focus on a special case in which the underlying network is bipartite. We show that a class of valid inequalities, called step inequalities, can significantly reduce computational effort.
منابع مشابه
Interdiction Modeling for Smuggled Nuclear Material
We describe a stochastic interdiction model on a transportation network consisting of two adversaries: a nuclear-material smuggler and an interdictor. The interdictor first installs radiation detectors on the network. These installations are transparent to the smuggler, and are made under an uncertain threat scenario, which specifies the smuggler’s origin and destination, the nature of the mate...
متن کاملLocating Sensors for Detecting Source-to-Target Patterns of Special Nuclear Material Smuggling: A Spatial Information Theoretic Approach
In this paper, a spatial information-theoretic model is proposed to locate sensors for detecting source-to-target patterns of special nuclear material (SNM) smuggling. In order to ship the nuclear materials from a source location with SNM production to a target city, the smugglers must employ global and domestic logistics systems. This paper focuses on locating a limited set of fixed and mobile...
متن کاملUsing Nuclear Materials To Prevent Nuclear Proliferation
Efforts to halt proliferation of nuclear weapons are threatened by vulnerability of weapons-usable material to smuggling especially in Russia. Mixing 232 U into highlyenriched uranium (HEU) makes it readily observable and harder to steal. Adding a proportion of 233 U associated with a specific storage site enables attribution to be performed on stolen HEU that has been recovered. Incorporating ...
متن کاملDetecting nuclear materials smuggling: performance evaluation of container inspection policies.
In recent years, the United States, along with many other countries, has significantly increased its detection and defense mechanisms against terrorist attacks. A potential attack with a nuclear weapon, using nuclear materials smuggled into the country, has been identified as a particularly grave threat. The system for detecting illicit nuclear materials that is currently in place at U.S. ports...
متن کاملModels for nuclear smuggling interdiction
We describe two stochastic network interdiction models for thwarting nuclear smuggling. In the first model, the smuggler travels through a transportation network on a path that maximizes the probability of evading detection, and the interdictor installs radiation sensors to minimize that evasion probability. The problem is stochastic because the smuggler’s origin-destination pair is known only ...
متن کامل