In the present invention, two improved variants of the reliability-based iterative majority-logic decoding algorithm for regular low-density parity-check codes are presented. The composite applicator includes a support material and a plurality of abrasive particles distributed within and throughout the support material. The mesh is surrounded by a frame connected to the frame of another section. The first transmission unit further has a stub shaft at another side to wedge in one side of an axle of the shade assembly. A phase comparator determines the phase difference between the second and the third beat signals. The mounting plate engages, by break-off tabs, a securing strap, a flange plate, and a centering plate.