In this study, we have determined the leader-following bipartite consensus conditions for nonlinear singular switched multi-agent systems on non-uniform time domains, using a signed network topology.

Whether it's for a guest room or a kid, these are the best twin mattresses that we've tested.

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If budget is your answer, well, Walmart has a Flash deal that might help: the $360 Gibaha 12-Inch Hybrid Mattress can be yours for just $179 this summer.

Five months on from my Simba mattress switch, here’s how it’s holding up — from sticky summer nights to long reading sessions in bed.

Shopping Amazon for your next bed? Check out our pick for the best cheap options -- tested so you don’t have to.