The present invention relates to a method of preparing an ethylene-\u03b1-olefin-diene copolymer and an ethylene-\u03b1-olefin-diene copolymer prepared thereby, by using a transition metal compound based on a cyclopentabfluorenyl group as a catalyst. The graph may be derived from tracing data, and may reflect the observed code elements and the observed interactions between code elements. The first gate region is associated with the first well, and the second gate region is associated with the second well. The reflective optical system includes a primary mirror including a first mirror and a second mirror, and a secondary mirror. Next the system recognizes the received speech from the user with the retrieved model. Suitable hardwaresoftware in the form of circuitry, logic gates, andor code functions to construct an envelope tracking waveform of an input communications signal and modulate the input supply voltage based on power amplifier circuitry operational parameters such as slew rates.