The present invention provides a graphical model in a computing environment that enables a non-graphical entity to be a caller entity that executes a sequence of commands to call to a graphical or non-graphical entity that is a callee. In accordance with the technique, a series of frames of the audio signal is analyzed to detect whether the audio signal comprises non-stationary noise. The enhancement grating object is positioned within a longitudinal coherence length of an incident X-ray from a target object. The fluid cylinder may include an outer cylinder with an open first end that telescopingly receives an inner cylinder. After gain adjustment, the modulated harmonic spectrum is added to a delayed version of the original spectrum. The interference effect directs the coating composition to deposit over the substrate as a coating having a fade zone.