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Engineering News

The First Evidence of Exoplanets — ScienceDaily

Beneath an elegant office building with a Spanish-style red tiled roof in Pasadena, California, three timeworn storerooms safeguard more than a century of astronomy. Down the stairs and to the right is a basement of wonder. There are countless wooden drawers and boxes, stacked floor to ceiling, with telescope plates, sunspot drawings and other records. A faint ammonia-like smell, reminiscent of old film, fills the air. Guarding one storeroom is a short black door with a sign saying “This door…

Laser-based method creates force-sensitive, flexible microstructures that conduct electricity — ScienceDaily

For the first time, researchers have used a single-step, laser-based method to produce small, precise hybrid microstructures of silver and flexible silicone. This innovative laser processing technology could one day enable smart factories that use one production line to mass-produce customized devices combining soft materials such as engineered tissue with hard materials that add functions such as glucose sensing. The metal component of the microstructures renders them electrically conductive while the elastic silicone contributes flexibility. This unique combination of properties…

A new breathing monitor signals the coming generation of pervasive healthcare

Credit: 9nong, Shutterstock Pervasive healthcare is an approach which addresses the challenge of straining health services with evidence-based, preventative strategies. The increased accessibility of personal monitoring devices is helping breathe life into efforts. Researchers recently announced the development of technology which can monitor breathing rates using mobile phones. The team, publishing their results in the journal Biomedical Optics Express, report how they created new software to be used in conjunction with an inexpensive thermal camera. Breathing rates were tested in…

Making your water safer with UV light

In Natalie Hull’s hometown in rural Kentucky, well water was contaminated by heavy metals from mining, and sewage from pipes emptied into a creek that ran near her house. So it’s not entirely surprising that when it came time to choose a PhD topic, she decided to focus on water purification and disinfection. Now in the final year of her environmental engineering studies, Hull’s research looks into the different wavelengths of ultraviolet radiation that will best kill dangerous pathogens in…

Fabricating shape-shifting objects with hobbyist 3-D printers

Credit: Amir Zadpoor / TU Delft Researchers at TU Delft have combined origami techniques and 3-D printing to create flat structures that can fold themselves into 3-D structures like tulips. The structures self-fold according to a pre-planned sequence, with some parts folding sooner than others. Usually, expensive printers and special materials are needed to fabricate such objects. But the TU Delft scientists have created a new technique that requires only a common 3-D printer and ubiquitous material. Among other applications,…

Mate tea made safer

Credit: CC0 Public Domain South America’s answer to the Brits’ builder’s brew, their choice pick-me-up is said to have the kick of coffee, the health perks of tea and the delight of chocolate. But for all its benefits, Brazil’s best-loved beverage has been linked to mouth, throat, kidney and bladder cancers. It is a hard fact to swallow in a country where people in every park and square sit sipping it. Made from the dried, chopped, ground leaves of…

Fixing the Plumbing: How We Identify and Stop Slow Latency Leaks at LinkedIn

So, e.g., a regression of a “high” traffic page is classified as P0 if PLT this week is above 30% of the baseline (high water mark). This regression will be resolved only when the PLT is less than 5% above the baseline (low water mark). Note that the thresholds are revised periodically, so the thresholds shown here are examples to illustrate the overall concept. TicketsWe open internal tickets for each regression and assign them to page owners. Page ownership is…

🎃 An engineering spooky story 🎃 – Medium Engineering

Wait, we can’t recover??? You may have already heard the saying “You don’t have a backup until you tested that you can restore it.” As it turns out, that saying is true but not enough… Not so long ago Recently, I screwed up big time with a small pull request: At Medium, we use Jenkins quite a lot, and by quite a lot, I mean, way too much… Among those “creative” use cases, we use it to trigger our ETL pipelines…

Turbocharging Analytics at Uber with our Data Science Workbench

Millions of Uber trips take place each day across nearly 80 countries, generating information on traffic, preferred routes, estimated times of arrival/delivery, drop-off locations, and more that enables us to facilitate better experiences for users. To make our data exploration and analysis more streamlined and efficient, we built Uber’s data science workbench (DSW), an all-in-one toolbox for interactive analytics and machine learning that leverages aggregate data. DSW centralizes everything a data scientist needs to perform data exploration, data preparation, ad-hoc…