Estimation of Contaminant Subslab Concentration in Vapor Intrusion Including Lateral Source-Building Separation

Vapor Intrusion Estimation Tool for Unsaturated-Zone Contaminant Sources

Active Source Estimation for Improved Source Separation

Recent work in blind source separation applied to anechoic mixtures of speech allows for reconstruction of sources that rarely overlap in a time-frequency representation. While the assumption that speech mixtures do not overlap significantly in time-frequency is reasonable, music mixtures rarely meet this constraint, requiring new approaches. We introduce a method that uses spatial cues from an...

Probabilistic Contaminant Source Identification in Water Distribution Infrastructure Systems

Large water distribution systems can be highly vulnerable to penetration of contaminant factors caused by different means including deliberate contamination injections. As contaminants quickly spread into a water distribution network, rapid characterization of the pollution source has a high measure of importance for early warning assessment and disaster management. In this paper, a methodology...

Source Number Estimation and Clustering for Underdetermined Blind Source Separation

Much research has been undertaken in the field of blind source separation (BSS) and a large number of algorithms have been developed. However, most of them assume that the number of sources is known. In this paper we present an algorithm to estimate the number of sources in the (over-)determined and underdetermined case. We call this algorithm NOSET (Number of Sources Estimation Technique). We ...

Grand Prairie Vapor Intrusion Investigation