The topic of "energy-efficient networking and computing" is attracting growing attention for economic, energetic, and environmental reasons. According to a number of studies, Information and Communication Technologies (ICT) alone are responsible for up to 10% of world power consumption, due to the ever-increasing diffusion of electronic devices. Communication networks, including the Internet and wireless networks, represent a non-negligible part of the energy consumption of ICT. In addition, the carbon footprint of ICT devices due to energy consumption and the activities related to their entire lifecycle contributes to global warming. Hence, such rapid increase of power consumed by ICT, as well as the energy bills of service providers indicate necessity for improving energy-efficiency of ICT sector.
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