A multi-speed transmission includes an input member, an output member, a stationary member, and a first and a second compound planetary gear set. The apparatus further includes an encoder module operatively coupled to the push-to-talk switch and the emergency switch and configured to generate a digital identification each time the push-to-talk switch is pressed, and a digital emergency signal and digital identification when the emergency switch is pressed. In one embodiment, the facing is covered with an air-impermeable cover and a support frame can be placed surrounding the perimeter of the ceiling tile. The prefetch filter can include an array of slots for storing a portion of a next predicted access and determine a memory stream in response to a hit on the array by a subsequent memory request. Each of the first member and the second member includes a central driver aperture and the central driver is mounted within the central driver apertures of the first member and the second member. The invention also relates to transgenic plants and plant cells expressing the DMI1 protein for increased root nodulation, and methods for transforming plants with a M.