The disclosed embodiments include embodiments such as an X-ray tube cathode filament system. The system and method determines the extent or non-extent of the correlation between the products within the portfolio in order to offset the risk associated with the portfolio. By such a structure, the gate insulation film thickness is kept uniform. The second piezoelectric microactuator is electrically non-conductively attached to the load beam and the mount plate. The EJB and service server changes the SOAP-XML message to a DTD type SOAP-XML message if the SOAP-XML message is written by a JSP and, then, provides the DTD type SOAP-XML message to the client. The control can use information from the thread sensor to adjust thread tension by adjusting the active thread feeder.