The world celebrated Ohio’s most important cultural site. Like so much else, that’s controversial

The Octagon Earthworks here speak to us from 2,000 years ago — and they speak to the fraught cultural moment in which we find ...

The Mystery of How Quasicrystals Form

New studies of the “platypus of materials” help explain how their atoms arrange themselves into orderly, but nonrepeating, ...

Is math a four-letter word? New science center exhibit takes Xtreme approach

The newly installed “2theXtreme” exhibit at Orlando Science Center takes those first activities and then craftily spotlights mathematical properties. “They do a really good job of giving you an ...

Metal-organic frameworks: Nobel-winning tiny ‘sponge crystals’ with an astonishing amount of inner space

That enormous surface area is one of the unique things that make MOFs so powerful, and it comes from the nanoscale pores – tiny molecular rooms that can trap, separate, transform or transport gases, ...
IEEE

Distributed Coverage Hole Prevention for Visual Environmental Monitoring With Quadcopters Via Nonsmooth Control Barrier Functions

Abstract: This article proposes a distributed coverage control strategy for quadcopters equipped with downward-facing cameras that prevents the appearance of unmonitored areas in between the ...