Before accepting a setting request from a predetermined manager in a plurality of date-and-time managers capable of issuing a date-and-time setting request, a setting request from any manager can be accepted. The apparatus for monitoring includes: a pair of bipolar transistors and a first non-linear isolation element. The multifaced diaphragm assembly, which has thereinside the multifaced speaker housing assembly, is configured to have a plurality of regular pentagonal diaphragm segments that are combined together into a nearly spherical shape shell, and a plurality of speaker drive units opposing the diaphragm segments from inside in one-to-one relation. The top member and the bottom member each form an overhang, wherein each overhang is adapted to receive an edge of the display screen. Other embodiments are disclosed. The method also includes employing the identified scatter distribution to scatter correct projection data corresponding to the imaged object.