The present invention provides an improved design of linear motor as well as an improved control strategy. Such compounds demonstrate high rates of catalytic turnover in comparison with other Ru catalysts known in the art. The device 10 is designed to provide shade from the sun and help cool the air within a vehicle 18 parked beneath the device. Then, the pixel values of the pixel row of the frame are read from the second storage unit and written back to the first storage unit. The post may include a recess for receiving the latch members. The lenses of the invention impart a three-dimensional appearance to the pattern by the use of alternating clear and color layers.