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Engineering News

Bioengineers create more durable, versatile wearable for diabetes monitoring

Researchers at the University of Texas at Dallas have developed a wearable diagnostic biosensor that can detect three interconnected, diabetes-related compounds — cortisol, glucose and interleukin-6 — in perspired sweat for up to a week without loss of signal integrity. The team envisions that their wearable devices will contain a small transceiver to send data to an application installed on a cellphone. Credit: University of Texas at Dallas Researchers at The University of Texas at Dallas are getting more out…

Equipping form with function

The mechanisms for a waving wind-up toy is adjusted to fit the shape of a turtle. Credit: IST Austria Common toys such as steerable cars or waving wind-up figures are available as 3D-printable models, which also contain their mechanical components. However, these mechanical structures are optimized to fit exactly one particular shape of the toy. If designers want to reuse such a mechanism with different shapes, the necessary manual adjustments to the individual components are often unmanageable for non-experts, in…

Researchers design sounds that can be recorded by microphones but inaudible to humans

The sound’s frequency is designed by the researchers and transmitted from ultrasonic speakers, completely inaudible to humans but able to be recorded by microphones. Credit: Coordinated Science Laboratory Microphones, from those in smartphones to hearing aids, are built specifically to hear the human voice—humans can’t hear at levels higher than 20 kHz, and microphones max out at around 24 kHz, meaning that microphones only capture the sound we can hear with our ears. However, researchers at the Coordinated Science Laboratory…

Explaining Challenges to Patent Validity (and a looming threat)

We’ve written a couple times about the problem of patent trolls, and what we are doing in response to the first case a troll filed against Cloudflare. We set a goal to find prior art on all 38 Blackbird Tech patents and applications and then obtain a legal determination that Blackbird Tech’s patents are invalid. Such a determination will end Blackbird’s ability to file or threaten to file abusive patent claims, against us or anyone else. CC BY-SA 2.0 image…

Scientists design unique energy absorbing container

The unique energy absorbing container designed by SPbPU scientists. Credit: Peter the Great St. Petersburg Polytechnic University Computer-Aided Engineering Centre of Excellence (CompMechLab) Researchers have developed a technology to ensure the safety and efficiency of fragile equipment like high-precision devices weighing up to 8 kg when dropped from 125 meters height to a hard surface. It’s a protective container with world’s best energy absorption characteristics designed and manufactured at Peter the Great St. Petersburg Polytechnic University Computer-Aided Engineering Centre of…

China is still a shortage of polysilicon materials

Polysilicon is the solar photovoltaic industry, electronics industry and basic materials. In recent years, the world’s semiconductor integrated circuit industry and the rapid development of solar PV industry, especially by driving the development of solar cell industry, polysilicon market is growing rapidly. The polysilicon supply and demand imbalances have become increasingly prominent, but also attracted worldwide attention. In today’s energy has become tighter, increasing pressure on the environment under increasing renewable energy by the increasing attention of Governments, solar energy…

‘Superhero’ 3D printed hands help kids dream in Argentina

In this June 12, 2017 photo, Kaori Misue breaks into a smile in Buenos Aires, Argentina. Misue has a brand new prosthetic hand thanks to the genius of 21-year-old inventor Gino Tubaro and his 3D printer. Today, more than 500 people, mostly children, have received similar prostheses and 4,500 more remain on a waiting list. (AP Photo/Natacha Pisarenko) Being born without fingers can be tough for any child. Getting new ones—especially red and blue superhero themed digits—has made 8-year-old Kaori…

Origins of Sun’s swirling spicules discovered — ScienceDaily

At any given moment, as many as 10 million wild jets of solar material burst from the sun’s surface. They erupt as fast as 60 miles per second, and can reach lengths of 6,000 miles before collapsing. These are spicules, and despite their grass-like abundance, scientists didn’t understand how they form. Now, for the first time, a computer simulation — so detailed it took a full year to run — shows how spicules form, helping scientists understand how spicules can…

Tradeoffs in AB Testing Frameworks – Wealthfront Engineering Blog

At Wealthfront, the A/B test is one of our most powerful decision-making tools. It helps us make decisions under uncertainty, and learn about how our clients are reacting to new features we build. Our own framework has been a particularly featured one, supporting Bayesian inference methods, continuous stopping criteria, check metrics, and multiple variants. Recently, however, we found some our A/B tests were taking weeks, or even months to resolve. This was slowing down our ability to learn from our…

Researchers develop landmark achievement in walking technology

Human-in-the-loop optimization combines a software algorithm with versatile emulator hardware to automatically identify optimal assistance strategies for individuals. Credit: Kirby Witte, Katie Poggensee, Pieter Fiers, Patrick Franks and Steve Collins Researchers at the College of Engineering at Carnegie Mellon University have developed a novel design approach for exoskeletons and prosthetic limbs that incorporates direct feedback from the human body. The findings were published this week in Science. This technique, called human-in-the-loop optimization, customizes walking assistance for individuals and significantly improves…