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Category: Electronics Engineering

Portable nanospectrometer for detecting dangerous compounds

Credit: University of North Texas Guido Verbeck, UNT associate professor of chemistry and biochemistry, patented an algorithm that works with a high-tech tool to detect the location of chemical streams. Now, he’s using it in technology that can detect not only chemicals, but biological threats. His newest device, a mobile nano spectrometer, can be used in a moving vehicle to investigate attempts at creating biological warfare, examine environmental concerns, find clandestine laboratory locations, protect military bases and determine the toxicity…

Moving Forward with Path Forward

In February, I blogged about our first rotation of Path Forward returnships and the awesome people we’ve hired as a result of the program. As a refresher, Path Forward is a nonprofit organization that aims to empower people who’ve taken time away from their careers to focus on caregiving to return to the workforce. Cloudflare started partnering with Path Forward this past year as a way to expand our talent pool to include the best and the brightest, regardless of…

IV and cellular fluids power flexible batteries

Researchers have engineered bendable batteries that can run on body-inspired liquids such as normal IV saline solution and cell-culture medium. The authors designed alternatives to lithium-ion batteries by focusing on the mechanical-stress demands of wearable electronics such as smartwatches and the safety requirements of implantable electronics. Source link…

Thinking of State in a World of URLs

An intro to Redux-Location-State Like most of the web community, Spotify has found the combination of React and Redux to be a super powerful tool. It has allowed us to iterate quickly, build powerful components that can be shared across development teams, and onboard new developers much faster than previously. While we generally love what these tools have given us, there have been several things that we’ve had to work around. One of those things is the url, which is…

VR cricket game uses motion capture technology for full immersive experience

Cricket fans can now try out their batting skills with a virtual reality cricket game. Credit: Stickee Studios With the cricket season in full swing, cricket fans can try out their batting skills at home with a virtual reality game developed by Stickee Studios in collaboration with researchers at the University of Bath. Researchers at the University’s Centre for the Analysis of Motion, Entertainment Research and Applications (CAMERA), used the latest motion capture technology to record movements of actors playing…

Toasted Marshmallow — Marshmallow but 15X Faster. – Lyft Engineering

Lyft Loves Marshmallows! Marshmallow is a fantastic ODM that we leverage extensively at Lyft. It has an extensible, easy-to-use API and is framework agnostic. We use it to validate incoming requests, to deserialize data from Mongo or Dynamo, and to serialize outgoing requests. Unfortunately, we ran into a sticky problem with Marshmallow. Benchmarks suggest it’s one of the slowest serialization frameworks for Python. This put us in a tough spot…we love the powerful, easy-to-use API, but we wanted better performance…

When you're blue, so are your Instagram photos

Instagram photos can be examined by a computer to successfully detect depressed people, new research shows. The computer results are more reliable (70 percent) than the diagnostic success rate (42 percent) of general-practice doctors. The approach promises a new method for early screening of mental health problems through social media. Source link…

Four Features Your Home Security System Should Include

While there is only so much that you can do to keep your family safe on your own, there is a wide range of equipment that you can use to increase their security. Home security systems today go far beyond those that were available in the past. Those old systems simply included an alarm and some sensors that sent alerts back to a home base, which made a call to the local police station. When choosing a new security system…

Deep Dive on Ember Events – Square Corner Blog – Medium

Types of Event Listeners in Ember How do you know whether you’re using a DOM event listener or an Ember action listener? When will your action have access to the original DOM event? Can your action prevent other actions from being fired? There are three main ways of adding listeners in Ember: Adding an Ember action listener to a component with an event name attribute. {{some-component click=(action “handleClick”)}} 2. Adding an Ember action listener to a DOM node by modifying the…

Always Be Closing – Square Corner Blog – Medium

This is the story of a resource leak in one of Square’s Go services and the process of uncovering the root cause. Facing spiky and mysterious system metrics, we used a variety of standard and homemade tools to uncover a subtle bug in one of our core internal frameworks. Earlier this year, one of our Go services began using significantly more memory, breaking out of a steady state of flat memory use and predictable garbage collection patterns. At the same…