A dielectric ceramic article precursor and a process for preparing a dielectric ceramic article are presented. According to the invention, the arrangement has a first operator’s control for giving an adjusting path length and a second operator’s control for giving an adjusting speed. The invention also relates to methods of selecting and identifying compounds in the therapeutical methods, as well of the use of such compounds in the treatment of malignancies. The first data structure stores running aggregate information that is associated with a group that is accessed frequently relative to a threshold.