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There are hundreds of prepaid phone plans, but they all borrow from the same few mobile networks. Here’s what you need to ...

Graham Johnson, a computational biologist and scientific illustrator at the Allen Institute for Cell Science, recalls fantasizing at a lunch table, more than 15 years ago, about a computer model of a ...

Abstract: This letter investigates the problem of output tracking control subject to transient and steady-state performance constraints for unknown pure-feedback systems. On the basis of monotonicity ...