The invention features a system for displaying video information to passengers of an elevator in accordance with a play list defining a sequence of messages. This improves dispersibility of the co-curing agent and the organic sulfur compound within the rubber composition, and enables adjustment of a crosslinking pattern of rubber molecule main chains, so that rebound performance of the golf ball is improved. A fan draws air through the conduit. A method for scanning off-channel for shorter durations between transmissions to collect spectral data and a method for explicitly quieting IEEE 802. The capacitance of the capacitive load changes with a control signal. In joining BNNTs, the nanotube structure is modified with amorphous carbon deposited by controlled electron beam irradiation to form well bonded hybrid a-CBNNT structures.