The disclosed principles describe systems and methods for assessing the policy compliance of a target device, wherein the assessment is performed by a scanning computer in communication with the target device via a communication network. The higher sheet conductance portions are laterally adjacent to lower sheet conductance portions. The systems also include a second servo demodulator adapted to search for the SAM pattern, within the same servo wedge, at a second nominal frequency useful for searching for the SAM pattern if the servo wedge is within the second zone. The diffuser according to the invention results in an improved pressure recovery and increased turbine performance. The grinding table drive system further has a gearless direct drive which is arranged in the grinding table inner space. A first set of data blocks within a predetermined distance from the origin is stored in at least one initial execution file.