To provide a Cu-based amorphous alloy having a glass-forming ability higher than that of a Cu\u2014Zr\u2014Ti amorphous alloy and a Cu\u2014Hf\u2014Ti amorphous alloy, as well as excellent workability and excellent mechanical properties without containing large amounts of Ti. One of the plurality of QAM channels is selected as a selected QAM channel to maximize capacity for future service requests based on a determination that the selected QAM channel can have bandwidth deallocated to support a service at a second bandwidth greater than a first bandwidth. It is submitted with the understanding that it will not be used to interpret or limit the scope or the meaning of the claims. A mathematical model is created of an amount of electrical power to be consumed by the load as a function of time and of monetary cost of the electricity.