Abstract: The technology provides a system that allows for a first user (e.g., counselor) located far away from a second user (e.g., at-risk user) to easily contact the second user. The first user can provide an emergency response including an emergency service nearest to the location of the second user. The system searches for the nearest emergency service based on a selected area of a predetermined zone where the second user is located. Where there are no emergency services located in the selected area, the system successively searches expanded areas corresponding to predetermined zones for an emergence service until there is an emergency response. The system automatically updates the selected area for successively expanded predetermined zones for each instance where no emergency response is received in response to the search request.

Abstract: A method of detecting ionizing radiation is provided. The method includes pixelating a semiconductor substrate such that each pixel comprises a central region and a region of variable response, substantially blocking the ionizing radiation from reaching the region of variable response, and receiving the ionizing radiation with the central region.

Abstract: A method of detecting ionizing radiation is provided. The method includes pixelating a semiconductor substrate such that each pixel comprises a central region and a region of variable response, substantially blocking the ionizing radiation from reaching the region of variable response, and receiving the ionizing radiation with the central region.