A steering system and method are described for a vehicle having steerable wheels, with steering of the wheels controlled, at least in part, by a valve assembly. In the semiconductor device, the capacitor is electrically connected to pads on bottom of the integrated circuit chip, and the capacitor is provided to have a height on the carrier substrate that is smaller than or equal to a height of the bumps on the carrier substrate. The invention also provides methods for diagnosing, treating, or preventing disorders associated with aberrant expression of SECP. In one example, the radiation source is a fiber laser producing output in the ultraviolet wavelength range.