A method of fracturing a rock formation is provided including placing through a wellbore penetrating the rock formation propellants in a cavity located at a radial distance from the wellbore and igniting the propellants to cause a pressure sufficient to fracture the formation. The damper plate may be driven by an axial lead screw attached to a small DC motor and may employ a non-foam gasket to reduce water absorption and possible formation of obstructing ice. Distortion due to quantization of the set of coefficients may be estimated based on the histogram and average distortions for the histogram bins. Thus, as compared with a conventional CMOS transistor having an N-type polycrystalline silicon gate unipole and a conventional homopolar gate CMOS transistor in which the channel and the gate electrode have the same polarity, it is an advantage in costs, manufacturing periods, and element performances. Each of the first terminal and the second terminal will regain the predetermined voltage after the memory cell is completely programmed to store a predetermined binary digit.