Abstract: Symmetry is a widespread phenomenon in nature. Recognizing symmetry can minimize redundancy to improve computing efficiency. In this paper, we take permutation-related combinatorial ...

Abstract: Generating optimal excitation trajectories is crucial for ensuring that the observation matrix is well conditioned in robot dynamic identification. This task is a typical optimization ...

Add Yahoo as a preferred source to see more of our stories on Google. Why Your Verizon Phone Might Be in SOS Mode Right Now - Michael Vi / Shutterstock.com If you're a Verizon customer who's noticed ...

Michelle is Lifehacker's Associate Tech Editor, and has been reviewing games, laptops, phones, and more for over 10 years. She is based in New York City and holds a master's degree from NYU. Verizon ...

The Clicks Communicator looks like a BlackBerry phone, but it's designed as a companion device to your smartphone to help you focus. Julian is a contributor and former staff writer at CNET. He's ...