Abstract: Methods and apparatus for analysis and design of radiation and scattering objects are disclosed. In one embodiment, unknown sources are spatially grouped to produce a system interaction matrix with block factors of low rank within a given error tolerance and the unknown sources are determined from compressed forms of the factors.

Abstract: Systems, methods and media for faster filling of bags with material are disclosed. An accelerating mechanism accelerates material flowing through a chute from a material supply to a bag of a bag supplier.

Abstract: The present invention is directed toward an apparatus for tactical ballistic protection for an individual. In particular, the present invention provides a portable device for dual use as a ballistic shield and a rifle mounting stand. The invention is comprised on a ballistic blanket attached to dual ballistic resistant transparent panes. The transparent panes are attached via a vertical hinge, at which the attachment point functions as a rifle mounting stand. The invention may be attached to existing structures via a combination of straps and hooks, or the device may be used free standing.