Energy-Efficient Design of Data Center Spaces in the Era of IoT Exploiting the Concept of Digital Twins. - Spyros Panagiotakis; Yannis Fandaoutsakis; Michael Vourkas; Kostas Vassilakis; Athanasios G. Malamos; Constandinos X. Mavromoustakis; George Mastorakis (Convergence of Artificial Intelligence and the Internet of Things, 2020)