Thermoplastic particle foams which have cells having a mean cell size in the range from 20 to 500 \u03bcm and in which the cell membranes have a nanocellular or fibrous structure having pore or fiber diameters below 1500 nm, and also processes for producing them. The semiconductor integrated circuit includes a signal line; and a signal loading compensation section in a semiconductor chip among the plurality of semiconductor chips, configured to apply a designed signal loading to the signal line in response to activation of a test signal. By establishing relationships between the servers managing each network, address discovery may be implemented across the common zone formed by the networks. The aggregate density of the chamber, the float, and the weight is greater than the density of the chamber. The server-based authentication process communicates with the token-based authentication process over a secure channel.