A method and apparatus for diffuse indirect lighting computation in a scene is described. Each disconnect switch includes a vacuum circuit interrupter mounted inside an insulating bushing. , compounds of Formula I, and pharmaceutical compositions thereof: Also provided herein are methods of their use for treating, preventing, or ameliorating one or more symptoms of a CCR3-mediated disorder, disease, or condition. Each of the firing sequences includes firing of the first source, waiting a selected time firing the second source and recording signals generated by the seismic sensor system. The anode is associated with the housing and configured to rotate around the longitudinal axis to a direction and direct the plurality of x-rays generated by the x-ray tube toward a surface of an object in the direction.