A compact, high power, dual mode, emitting and receiving ultrasound transducer and method for applying ultrasonic energy within a living subject and for monitoring the effects it induces in tissue comprises a set of piezoelectric polymeric transducer elements and a set of piezoelectric ceramic elements, bonded together. The linkage operates to raise the armrest during movement of the tray table between its stowed and use positions. A method of an embodiment ensures message delivery, acknowledge message delivery, message delivery in a specific order, resending of lost data messages, and the like. The machine uses CNC computerized controls, with each of the workheads having a separate and independent control. Also provided are methods of inhibiting ROCK1 and or ROCK2 that are useful for the treatment of disease. By means of the vibration blocks, the sensing area as well as the driving amplitude of the gyroscope can be increased effectively.