A method and system to identify skills and tools needed to address a process. The doped region comprises a semiconductor layer overlying the semiconductor substrate. The display communicates information concerning the device and the input controls the operation of the location determining component. By use of the toggle switch and various switching agents it is possible to reversibly switch the expression of a gene of interest between a stable \u201con\u201d state and stable \u201coff\u201d state or vice versa via transient exposure to a switching agent. Whether the current operational mode has any commands to be automatically launched is determined. A charging roller has a circular cross section with a first radius, the charging roller including a metallic core having a same rotational axis as the charging roller and a charging surface configured to charge the photoconductive surface of the image bearing member.