Systems and methods for displaying Internet content associated with television programming. Each drive mechanism includes a first differential clutch connected with a power source via a power splitter, a drive element such as a wheel or propeller connected with the first differential clutch, and a first braking device connected with the first differential clutch to independently control the delivery of power to the drive element. At least a portion of the barrier layer is viewable from outside of the bag. Each of the heat spreaders has a fin heat sink exposed to the flow of the coolant. Further, an addition of stochastic information can be employed in connection with the blended schema to improve the results beyond the competitive ratio. The cyclohexyl analogues used in accordance with the invention are represented by the following formula I: wherein the wavy segments represent \u03b1 or \u03b2 bond, dashed line represents the presence or absence of a bond W, Y, Z, R, R1, R2 and R3 are as defined in the specification.