A gas turbine engine assembly includes a rotor shaft having a threaded portion, a rotor stack support positioned radially outward from the rotor shaft, and a locking nut. The system includes a data acquisition system that generates time of arrival data corresponding to a plurality of blades in a device, a central processing subsystem that determines features of each of the plurality of blades utilizing the TOA data, and evaluates the health of each of the plurality of blades based upon the determined features. A first RLC packet, including a first header and a first data field, is transmitted to a receiver. The garbage collection file is periodically duplicated into a backup file to the garbage collection file, and, during runtime, the backup file having the memory leak information is analyzed including reviewing the state of the dirty objects as they existed prior to causing the first memory leaks to identify clean objects capable of turning dirty and causing second memory leaks. For example, the system may be configured to determine multiple properties of a specimen including, but not limited to, flatness, a presence of defects, and a thin film characteristic. The semiconductor device includes a layer of semiconductor material having a source and a drain, and a dual work function gate disposed on the layer of semiconductor material to define a channel interposed between the source and the drain.