A temperature control device for controlling temperature variable devices disposed near a grating of a variable dispersion equalizer including an optical waveguide having the grating. In a method for stabilizing a vehicle with fuel slosh, a controller for a multi-body assembly is formed by selecting vehicle configuration and velocity as states of a rigid body. The valve needle is comprises of a plurality of magnetostrictive actuator assembly is formed from a non-ferromagnetic material and the portion of the needle comprising the needle tip, which contacts the valve seat, is formed from a different material that has higher through-hardness than that the non-ferromagnetic material. A method of producing a fluid intake assembly for use with a turbo-machine is also provided. In an embodiment the keyboard may be rinsed under running water without damaging the keyboard circuit.