RADIOLOGICAL MATERIAL SECURITY IN LARGE PANORAMIC IRRADIATORS: Leasons Learned.
Abstract not provided.
SEARCH · Search NASA
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
Abstract not provided.
Abstract not provided.
Abstract not provided.
Abstract not provided.
Abstract not provided.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Abstract not provided.
The Office of Legacy management asked the Aerial Measurement System to perform an aerial survey and analyze the results for a three uranium mines in Wyoming
presentation to accompany the AMS DRUM survey report
Abstract not provided.
A particle filter algorithm is presented to estimate the position, strength, and cardinality of an unknown number of radioactive point sources in an obstacle-rich environment using count measurements. The algorithm addresses gaps in the prior literature by incorporating two novel elements. The first is a precomputation step in which local terrain and obstacle data is processed to compute attenuation kernels throughout the search area. This enables rapid estimation performance in obstacle-rich environments as measurements are gathered. The second novel feature is a dynamic particle allocation technique in which the number of particles is adjusted in real time to meet convergence goals. This feature allows the algorithm to scale more efficiently to scenarios with a larger number of sources. A series of computational experiments using simulated data demonstrates the algorithm’s performance in a cluttered environment with up to eight sources.
Abstract not provided.
Abstract not provided.
Abstract not provided.
This is the final thesis and research paper for Frank Pulciano. He is graduating with his Masters in Mechanical Engineering and will be presenting his research and defending his thesis.