A transportable, transformable structure utilizing a tower shuttle apparatus for converting the structure from a closed, transportable unit to an open, stationary unit. The node obtains an uplink bandwidth available for broadcasting the message over the network and a number of copies that can be broadcast based on the available bandwidth. The front side has a liquid outlet opening communicated with the receiving space. The test pads are positioned on the peripheral section of the active surface. The method of controlling the washing machine includes increasing the speed of the rotation tub stepwise in the period in which the excessive vibration of the water tub occurs; measuring current of a motor to detect an amount of unbalance while the speed of the rotation tub is increased stepwise; and controlling the speed of the rotation tub based on the detected amount of unbalance. The lead-free solder as an alloy of tin with no lead contained is melted, and ultrasonic vibration is acted at least either to the join object to be joined by the lead-free solder or to the lead-free solder when the molten lead-free solder is solidified.