A bowstring drawing assembly for a bow has a mounting frame, an operating device and a connecting belt. The tunnel access sessions are created between a network device, typically a gateway device and a network service, such as the Internet or a corporate intranet. The nitride layer protects the oxide layer to alleviate oxide damage during a pre-silicidation PAI process thereby preventing oxide attack during a subsequent HF dip operation and preventing nickel silicide spiking through the attacked oxide layer during silicidation. Smoothed, subsampled empirical profiles for each Region of Interest are generated by the main calibration module, together with first derivative curves and diagnostic information. In another approach, the second developer is identified utilizing a skill-matching algorithm.