Abstract: Beverage supply apparatus 100 has tank 3, heating device 6 for heating pipe L31 in milk supply pipe L3 through which a beverage (milk or foamed milk) flows, and first pump 7. When the beverage supply is completed, apparatus 100 fills pipe L3 with water, and enters into a standby state. When the standby state continues for a predetermined time, apparatus 100 discharges the water inside pipe L3 through drain pipe L4, and then again fills pipe L3 with water. Additionally, when a supply instruction is input during the standby state, the beverage supply apparatus 100 discharges the water through the drain pipe L4, discharges the beverage from the drain pipe L4 by a predetermined amount, and then delivers the beverage from the beverage delivery port 10 through the outlet pipe L33.

Abstract: A traffic generator for sending a pseudo-traffic onto a packet-switched network to evaluate the network performance and a traffic generating function determining method of optimizing generating functions (mathematical models) for a pseudo-traffic are provided. A traffic analysis unit 71 analyzes an actual traffic inputted thereto. An evaluate/optimization unit 74a optimizes parameters of first mathematical models on the basis of a packet length extracted by a packet length extracted unit 71a and the calculation results of the first mathematical models stored in a mathematical model storing unit 72a. The optimized first mathematical model is then registered in a packet length determining unit 2a of a packet sending pattern determining module 2. The packet length determining unit 2a calculates the packet length on the basis of the first mathematical model thus registered and then outputs the calculation result to a packet generating module.

Abstract: An amount of data to be distributed to each receiving terminal is dynamically controlled for each receiving terminal in response to a congestion of each of plural receiving terminals. When a determination of an RR (Reception Report) returned from the receiving terminal results in a very low rate of packet loss, an adaptive control mixer distributes communication data transmitted from a transmitting terminal to the receiving terminal without reducing the communication data. On the other hand, the determination of the RRs returned from the receiving terminals results in a high rate of packet loss, for example, 50% and 90%, respectively. In this case, the adaptive control mixer reduces, for example, 50% of the communication data transmitted from the transmitting terminal and then distributes the data to the one receiving terminal. The adaptive control mixer reduces, for example, 90% of the communication data and then distributes the data to the other receiving terminal.