The present invention relates to the novel catalytic composition having a high specific activity in reactions involving hydroprocessing of light and intermediate petroleum fractions, and preferably in hydrodesulphurization and hydrodenitrogenation reactions. In one embodiment, an encoding method includes jointly transforming a set of pixels into high-pass data using an orthonormal transform. An actuator places a driving force on the variable capacitor which causes relative movement between the plates, where the movement creates a shear force between each moving plate and the liquid, which damps the movement of the plate and increases the capacitor’s response time to the applied force in accordance with the liquid’s viscosity.