Abstract: A particle imaging method for distinguishing between types of incident particles, such as neutrons, photons, and alphas, and improving the position resolution of particle imaging devices with matrix readout. The method includes high frequency multisampling readout electronics that provides the sequences of multiple measurements for each detected event, resulting in recorded detailed waveform information describing the signals. Such detailed information is used to approximate each signal waveform with a parameterized function in which the extracted parameter sets determine the type of the incident particle in an optimized fashion. The detailed event-by-event multisampling information for each signal readout channel in the matrix readout of the radiation imaging devices improves and optimizes the position resolution for variable shapes of the signals. Such devices can be used in mixed radiation fields, creating a new class of multimodal photon and neutron imagers.

Abstract: A particle imaging method for distinguishing between types of incident particles, such as neutrons, photons, and alphas, and improving the position resolution of particle imaging devices with matrix readout. The method includes high frequency multisampling readout electronics that provides the sequences of multiple measurements for each detected event, resulting in recorded detailed waveform information describing the signals. Such detailed information is used to approximate each signal waveform with a parameterized function in which the extracted parameter sets determine the type of the incident particle in an optimized fashion. The detailed event-by-event multisampling information for each signal readout channel in the matrix readout of the radiation imaging devices improves and optimizes the position resolution for variable shapes of the signals. Such devices can be used in mixed radiation fields, creating a new class of multimodal photon and neutron imagers.

Abstract: A mobile or hand held computer system with a touch screen graphical display functions as a programmable interactive touch screen map. It shows an image representing a map and allows a user to enter a map location by pressing corresponding point on the touch screen. The video memory associated with the map image also contains transparent interactive objects, whose shapes and positions corresponds to visual feature on the map. Each of the interactive objects is described by a record in a data base, the record contains textual, visual, audio information and reference to a computer algorithm. If a location, entered by user falls within an interactive object, corresponding record is accessed, relevant algorithm is executed and the information from the is provided. An intuitive graphical user interface includes, beside the interactive map, information and control section which allows user to enter commands and obtain information.