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Engineering News

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…

Introducing Square Checkout – Square Corner Blog – Medium

An out-of-the-box, hosted checkout payment solution for Square developers who are looking for a one-stop integration. Over a year ago we introduced Build with Square, our online and offline payment platform alongside our reporting APIs. Since then, we’ve worked closely with developers and our sellers to identify how we can make it easier to start selling online while harnessing the power of our APIs. One of the pieces of feedback we keep hearing from sellers is: Both buyers and sellers…

Improving Critical Infrastructure Rollouts | Labs

Spotify began using Docker with a few prototype services in 2014. We upgraded and configured it many times since and have almost every time come across issues that were often hard to detect and fix. When the number of backend services running on Docker was low, the impact of these issues was small. As Docker adoption grew so did the risk and impact of faulty Docker changes until they reached unacceptable levels. In October 2016, we deployed a bad configuration…

Content Popularity for Open Connect – Netflix TechBlog – Medium

By Mohit Vora, Lara Deek, Ellen Livengood There are many reasons why Netflix cares about the popularity of our TV shows and movies. On the Open Connect Content Delivery team, we predict content popularity to maximize our infrastructure efficiency. Some months ago, we blogged about how we use proactive caching to keep the content on our global network of Open Connect Appliances (OCAs) current. We also recently gave an overview of some of the data science challenges where Open Connect…

The world’s first 3-D printed reinforced concrete bridge starts to take shape

The printing of concrete for the 3D-printed bridge has begun. Credit: Eindhoven University of Technology Today the Built Environment department’s concrete printer starts printing the world’s first 3-D printed reinforced, pre-stressed concrete bridge. The cycle bridge will be part of a new section of ring road around Gemert in which the BAM Infra construction company is using innovative techniques. ne of the advantages of printing a bridge is that much less concrete is needed than in the conventional technique in…

New spectral eye video database SPEED revolutionises eye-tracking

Info-graph for SPEED showing the gender diversity, iris-colour diversity, and nationality diversity within the database as well as example images taken from the spectral video streams. The videos were taken under two illumination conditions: sunny daylight and office light. The example images demonstrate the different conditions incorporated into the database: a) standard conditions, b) shadows, c) strong reflections from daylight, d) use of sunglasses, e) strong reflections from office light, f) extreme angles in daylight g) hair occlusion, h) extreme…