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Category: Mechanical Engineering

High speed video recording precisely measures blood cell velocity

Nailfold capillary network obtained by new system. Credit: Igor Gurov Scientists from ITMO University created a high-speed video capillaroscopy system that enables direct measurement of red blood cell velocity. Coupled with sophisticated software, the system can improve the accuracy of vascular condition assessment. Such a system could be useful for monitoring the efficiency of certain therapies. The results of the research were published in Optics and Lasers in Engineering. Capillaroscopy systems are commonly used either to determine the shape and…

Go, don’t collect my garbage

Not long ago I needed to benchmark the performance of Golang on a many-core machine. I took several of the benchmarks that are bundled with the Go source code, copied them, and modified them to run on all available threads. In that case the machine has 24 cores and 48 threads. CC BY-SA 2.0 image by sponki25 I started with ECDSA P256 Sign, probably because I have warm feeling for that function, since I optimized it for amd64. First, I…

Engineering More Reliable Transportation with ML and AI at Uber

In recent months, Uber Engineering has shared how we use machine learning (ML), artificial intelligence (AI), and advanced technologies to create more seamless and reliable experiences for our users. From introducing a Bayesian neural network architecture that more accurately estimates trip growth, to our real-time features prediction system, and even our own internal ML-as-a-service platform, Michelangelo, these two fields are critical to supporting Uber’s mission of developing reliable transportation solutions for everyone, everywhere. Among other areas, we use ML to…

Netflix at AWS re:Invent 2017 – Netflix TechBlog – Medium

by Jason Chan Netflix is excited to be heading back to Las Vegas for AWS re:Invent at the end of the month! Many Netflix engineers and recruiters will be in attendance, and we’re looking forward to meeting and reconnecting with cloud enthusiasts and Netflix OSS users. We’re posting the schedule of Netflix talks here to make it a bit easier to find our speakers at re:Invent. We’ll also have a booth on the expo floor, so please stop by and…

LavaRand in Production: The Nitty-Gritty Technical Details

Lava lamps in the Cloudflare lobby Courtesy of @mahtin As some of you may know, there’s a wall of lava lamps in the lobby of our San Francisco office that we use for cryptography. In this post, we’re going to explore how that works in technical detail. This post assumes a technical background. For a higher-level discussion that requires no technical background, see Randomness 101: LavaRand in Production. As we’ve discussed in the past, cryptography relies on the ability to…

Fluidic transistor ushers the age of liquid computers

Liquid at room temperature, an indium gallium alloy can be used to create stretchable circuit wiring and electrical switches. Credit: College of Engineering, Carnegie Mellon University Transistors, those tiny electrical switches that process signals and data, are the brain power behind every electronic device – from laptops and smartphones to your digital thermostat. As they continue to shrink in size, computers have become smaller, more powerful, and more pervasive. However, as we look to build squishy, human-friendly machines that have…

Six Political Questions for Engineers to Think About

Provided below are six political questions that engineers and engineering organizations should be thinking about. Question 1 – Polls and political commentators have highlighted that this is the most politically divided the country has been since the Civil War and Reconstruction.  Assuming this is true – how should the engineering communities be thinking strategically about this political divide? The graphic on the cover page is from the Federal Reserve Bank of Philadelphia annual Partisan Conflict Index.  The index was developed…

Simple, rapid determination of cable properties

The tests run automatically – all the user needs to do is clamp in the cable and press the start button. Credit: Fraunhofer-Gesellschaft Trying to fit all the necessary cables into a car is anything but an easy task. Simulations can be helpful, but the properties of each cable need to be precisely defined up front. The automated MeSOMICS measurement system enables carmakers, for the first time, to define these parameters simply and rapidly, without having to call on outside…

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…

5 Fantastic Things You Can Do at A Lightning Speed on a Mac!

Many people debate on whether they should take a Mac or opt for a PC when it comes to buying a new computer for their needs. Apple Mac users are happy with their choice, and they encourage PC users to switch to Mac for the obvious reasons that it is much better than a PC accordingly to their user experience. Experts say they are right to a great extent as there are many things that you can quickly do on…