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Wheeled, flying and six-legged robots stay on track with new learning method

It's important for a robot not just to learn a task optimally, but to complete it without going off the rails of reasonable expectations. Until now, roboticists could have one or the other. Aerospace engineering researchers in The Grainger College of Engineering, University of Illinois Urbana-Champaign, combined reinforcement learning with control theory to guarantee robot stability and improve tracking performance by up to 15% compared with existing methods.

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Magnetic field tests predict blue OLED lifetimes from tiny brightness changes

Could a magnetic field be used to identify in advance which OLEDs will keep smartphone and TV screens bright the longest? A KAIST research team has developed a technique that predicts OLED lifetime by analyzing small changes in brightness caused by a magnetic field. The technique reduces the need for long operating tests and is expected to support the development of longer-lasting displays.

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AI chatbots often give unsafe or incomplete advice to survivors of tech-enabled abuse, study finds

People experiencing technology-facilitated abuse, such as spyware on a phone, an ex tracking their location or an abuser controlling their accounts, may encounter or turn to AI chatbots for help. But a new study led by researchers at NYU Tandon finds that the advice those systems provide is frequently inaccurate, incomplete or potentially unsafe to follow.

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New planning method could make driverless electric taxi fleets more efficient and reliable

Self-driving electric taxi fleets could make transportation more efficient and sustainable, but only if vehicles can continuously make smart decisions about where to drive and when to recharge. Researchers at Chalmers University of Technology in Sweden have now developed a new optimization method that enables near-optimal large-scale fleet control while accounting for uncertainties that arise in real-world transportation systems.

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The driveway divide: Why parking for electric vehicles is such a big barrier

Most people who have an electric car have access to a driveway or private parking. In England, 90% of EV owners can park easily and charge theirs from home. But roughly 40% of U.K. households don't have off-street parking, so the questions are how they would charge an EV and whether easy access to home charging would influence their decision to acquire one.

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