A polyimide having a repeating unit of the general formula and a polyamic acid having a repeating unit of the formula : 1, Y represents a direct bond, CH2, O, SO2, S, CO or C, and W represents a direct bond, CH2, C2, C2, S, SO, SO2 or O. The stack processing tray has a plurality of cells, each cell being configured to receive at least two integrated circuit devices in a vertically superimposed, stacked relationship. The computer system to perform the process of underwriting, rating, quoting, binding, and booking an insurance policy includes browsers, data bases, processors and a dispatcher that parses the information to select an insurance process. In addition, depth information andor lateral information of the portion of the sample, may be obtained. Resource allocation is requested for each of the aggregated resource requests from a network border controller based on requirements of the set of set of aggregated resource requests. The system also includes a display unit which automatically shows the alphanumeric identification characteristic on a display screen.