Apparatus, system, and method for clipping graphics primitives are described. The Black-Scholes model for the price of a risky asset is replaced by an improved model which uses a fractal activity time process instead of a conventional time parameter. The method also comprises coupling the second member to the first member such that a steam turbine flow splitter is formed. The power control unit may be connected to the brakes of the towed vehicle and the power control unit may be capable of selectively controlling the brakes of the towed vehicle based on a set of braking parameters. The method also includes computing the force exerted on the charged particle in an image intensifier.