The nightmare scenario in homeland security is a terrorist detonation of a nuclear weapon on U.S. soil. In a paper published this week in Risk Analysis: An International Journal, Dr. Lawrence Wein of the Standard University Graduate School of Business, along with his co-authors, discusses the costs and effectiveness of available technologies for detecting a nuclear device at a U.S. port or on a U.S.-destined ship at a foreign port. This study comes on the heels of the President signing the SAFE Port Act of 2006 into law last Friday.
Over 95% of overseas U.S. imports and exports are shipped in standardized containers that enter the country through U.S. ports. These containers represent a potentially vulnerable mechanism for the delivery of nuclear and radiological devices by foreign terrorists. The cost of a nuclear detonation at a U.S. port is estimated at about 1 trillion dollars. Terrorists may also attempt to detonate a smuggled device in a U.S. city center to maximize the loss of life.
Professor Wein and colleagues discuss an 11-layer security system to detect a smuggled device and use game theory to find the optimum combination of security measures. The authors estimate a low probability of detection with the current system of approximately 10% (before the SAFE Port Act is implemented). The authors suggest that achieving a detection rate of at least 90% would require an investment of about $2 billion for testing at domestic ports only with an additional $11 billion for testing done at overseas ports.
According to the study, one major limitation of the SAFE Port Act is that it only requires radiation detection. Because terrorists can shield their weapon with dense material, two-dimensional scans are also needed to detect shielding. A second major limitation of the SAFE Port Act is that it does not require inspections at overseas ports for ships destined to the U.S., although it does provide training and loans for detection equipment for ports in other nations. Terrorists may be able to detonate a device upon arrival at a U.S. port before any attempts at detection occur. The only way to prevent this scenario is to inspect cargo at overseas ports.
Dr. Wein summarized his research by noting "the estimated $10 billion/year required to secure ports is comparable to the current annual investment for ballistic missile defense, making this a sound investment in light of the shift in the nature of the threat from adversarial nations to terrorists."
Rick Reiss | EurekAlert!
Study relating to materials testing Detecting damages in non-magnetic steel through magnetism
23.07.2018 | Technische Universität Kaiserslautern
Innovative genetic tests for children with developmental disorders and epilepsy
11.07.2018 | Christian-Albrechts-Universität zu Kiel
New design tool automatically creates nanostructure 3D-print templates for user-given colors
Scientists present work at prestigious SIGGRAPH conference
Most of the objects we see are colored by pigments, but using pigments has disadvantages: such colors can fade, industrial pigments are often toxic, and...
Scientists at the University of California, Los Angeles present new research on a curious cosmic phenomenon known as "whistlers" -- very low frequency packets...
Scientists develop first tool to use machine learning methods to compute flow around interactively designable 3D objects. Tool will be presented at this year’s prestigious SIGGRAPH conference.
When engineers or designers want to test the aerodynamic properties of the newly designed shape of a car, airplane, or other object, they would normally model...
Researchers from TU Graz and their industry partners have unveiled a world first: the prototype of a robot-controlled, high-speed combined charging system (CCS) for electric vehicles that enables series charging of cars in various parking positions.
Global demand for electric vehicles is forecast to rise sharply: by 2025, the number of new vehicle registrations is expected to reach 25 million per year....
Proteins must be folded correctly to fulfill their molecular functions in cells. Molecular assistants called chaperones help proteins exploit their inbuilt folding potential and reach the correct three-dimensional structure. Researchers at the Max Planck Institute of Biochemistry (MPIB) have demonstrated that actin, the most abundant protein in higher developed cells, does not have the inbuilt potential to fold and instead requires special assistance to fold into its active state. The chaperone TRiC uses a previously undescribed mechanism to perform actin folding. The study was recently published in the journal Cell.
Actin is the most abundant protein in highly developed cells and has diverse functions in processes like cell stabilization, cell division and muscle...
17.08.2018 | Event News
08.08.2018 | Event News
27.07.2018 | Event News
17.08.2018 | Physics and Astronomy
17.08.2018 | Information Technology
17.08.2018 | Life Sciences