A method, computer readable medium with programmed instructions, and system for obtaining, managing, and providing retrieved content includes selecting one or more concepts from a plurality of concepts. The engine includes a fuel injection valve with an actuator for changing a commanded amplitude for lifting a valve needle during injection, and for changing, from one combustion cycle to the next, the shape of an actuation pulse defined by commanded amplitude plotted against time. The compact disc player further includes a controller operably communicating with the temperature sensor. Locations indicated as being defective are considered candidate defects and may subsequently be inspected in more detail.