A hard coating film having wear resistance superior to conventional TiAlN coating films, oxide coating films, and the like. A processor is in operable connection with processor readable media, a database provided on the processor readable media stores preference information related to a plurality of individuals. In addition, the regulator circuit includes an output circuit configured to receive the back-bias voltage from the charge pump and having an output node for outputting the back-bias voltage, as well as a reference voltage circuit configured to generate a reference voltage signal based on a threshold voltage of the at least one transistor in the primary circuit. The system can then classify the headway-control maneuver using selected discriminant features. The pump down plugs have a passage that is initially obstructed by a material that eventually disappears under anticipated well conditions.