An extensible mobile computing platform. The surge arrester includes first and second connecting terminals. By using the search strategy, the End of Block is predicted and the calculation structure is determined by the predicted EOB. In the case of yaw departure avoidance, the PID controller controls the plasma to adjust the separation points to angular locations around the forebody that provide a robustly stable symmetric vortex pattern on a time scale that the asymmetries develop. The addition salt requires no heating process during drug preparation and provides an aqueous drug product in which the salt is stably dissolved. Water may be purified by passing feed water through an electrochemical deionization device.