A kind of piezoceramic shaft-driving type ultrasonic motor is a piezoelectric disc device as the driving stator of the motor in which the A. In one aspect, a region of background pixels is identified in the image. The stand can also be used for storage and transport of the bouquets. The wearable component includes a transmitter to transmit the input command. The fastening member is separately made from the power contact to fasten securely to the fastening portion. Since the storage device may have a plurality of hidden areas, and each hidden area may have a respective password, the respective hidden areas can be independently and securely managed.