Abstract: I welcome you to the fourth issue of the IEEE Communications Surveys and Tutorials in 2021. This issue includes 23 papers covering different aspects of communication networks. In particular, ...

Abstract: Present-day quantum computers suffer from various noises or errors such as, gate error, relaxation, dephasing, readout error, and crosstalk. Besides, they offer a limited number of qubits ...

To those who think the practice of reading tarot is an occult art reserved for spook sessions, let’s get this out of the way: It isn’t. Like therapy, meditation, and advice from friends, tarot is ...