This invention provides a method for interleaving bits of a digital signal representative of data andor audio in a digital audio broadcasting system, the method comprising the step of: writing a plurality of bits of the digital signal to a matrix; and reading the bits from the matrix, wherein at least one of the writing and reading steps follows a non-sequential addressing scheme. The reel device includes support arms, a crossbar between the support arms, and a number of radial bars extending from the crossbar. An oxidized asphalt coating is applied to the upper and lower surfaces of the fibrous mat generally encapsulating the fibrous mat including the rubberized asphalt coating provided on the lower surface of the fibrous mat. The liposome may also include a stabilizing moiety interposed between the linking and targeting moieties, and covalently bound to both. This in-plane switching mode LCD has an improved viewing angle characteristics. For example, a course consumption platform can parse the macrostructure and embedded microstructures to identify next microstructures to present to the student in such a way that dynamically adapts knowledge entities of the course to a student as a function of the student’s present knowledge level associated with the student and difficulty levels of the presented microstructures.