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Category: Electronics Engineering

Using ‘shade balls’ in reservoirs may use up more water than they save — ScienceDaily

Preventing reservoir evaporation during droughts with floating balls may not help conserve water overall, due to the water needed to make the balls. During droughts, communities may rely on water stored in reservoirs. However, significant amounts of water can evaporate from the surface of the reservoir. Amid California’s latest drought, which lasted from 2011-2017, 96 million ‘shade balls’ were deployed on the Los Angeles reservoir. These floating, black plastic balls cover the water surface to prevent evaporation. However, a new…

Exploding E-Cigarettes and Ethical Theories

A recent article in the engineering magazine IEEE Spectrum describes how numerous users of e-cigarettes have received injuries ranging from minor to life-threatening when their devices caught fire or exploded.  E-cigarettes work by vaporizing a solution of nicotine and flavoring with a hot wire powered by a high-energy-density lithium-ion battery.  Lithium-ion batteries are in everything from mobile phones to airliners, but the particular design of e-cigarettes makes them especially hazardous in this application.  The high power required by the heater…

DNS-Over-TLS Built-In & Enforced – 1.1.1.1 and the GL.iNet GL-AR750S

GL.iNet GL-AR750S in black, same form-factor as the prior white GL.iNet GL-AR750. Credit card for comparison. Back in April, I wrote about how it was possible to modify a router to encrypt DNS queries over TLS using Cloudflare’s 1.1.1.1 DNS Resolver. For this, I used the GL.iNet GL-AR750 because it was pre-installed with OpenWRT (LEDE). The folks at GL.iNet read that blog post and decided to bake DNS-Over-TLS support into their new router using the 1.1.1.1 resolver, they sent me…

Building a real-time user action counting system for ads

Del Bao, Software engineer, Ads Infrastructure Guodong Han and Jian Fang, Software engineers, Serving System The Pinterest ads team’s mission is to provide the best experience for both Pinners and advertisers. Our ads system is a real-time bidding system that delivers targeted ads based on a variety of attributes. One of the major behavioral attributes is user action counts, the count for a Pinner’s past clicks, impressions and other actions on ads. An important part of user action counts is frequency…

API Versioning for Connect v2 – Square Corner Blog – Medium

We’ve got an exciting update coming for our Connect v2 developers! We have released versioning for all Connect v2 endpoints for Square’s APIs. This will allow us to deliver more functionality and features faster than ever before. No need to worry though, our APIs will remain backwards-compatible and will allow you to upgrade when you’re most comfortable. This means you can safely continue using the Square APIs you already love, but allows us to bring you new or improved features…

Approach for cultivation of strawberry and tomato varieties with reduced allergy potential — ScienceDaily

The incidence of food allergies has increased in recent decades: It affects three to four percent of the adult population and five percent of children. Tomatoes (Solanum lycopersicum) and strawberries (Fragaria x ananassa) can cause allergic reactions due to the presence of various allergenic proteins. Of particular note are proteins that resemble the primary allergen in birch pollen and due to this similarity can lead to birch pollen-associated food allergy. About 1.5 percent of the population in Northern Europe and…

Evolution of Application Data Caching : From RAM to SSD

In 2013, we introduced EVCache a distributed in-memory caching solution based on memcached that offers low-latency, high-reliability caching and storage. It is well integrated with AWS and EC2, a Netflix OSS project, and in many occasions it is termed as “the hidden microservice”. Since then, EVCache has become a fundamental tier-0 service storing petabytes of data and hundred of billions of items, performing trillions of operations per day, has the ability to persist the data to the disk, and has…

Introducing Proudflare, Cloudflare’s LGBTQIA+ Group

With Pride month now in our collective rearview mirror for 2018, I wanted to share what some of us have been up to at Cloudflare. We’re so proud that, in the last 8 months, we’ve formed a LGBTQIA+ Employee Resource Group (ERG) called Proudflare. We’ve launched chapters and monthly activities in each of our primary locations: San Francisco, London, Singapore, and Austin. This month, we came out in force! We transformed our company’s social profiles, wrapped our HQ building in…

Superior seismic imaging for better drilling

The GIRIH software solves seismic wave propagation problems by grouping cells from the fine-scale grid of space and time coordinates into tiles as shown. By processing the tiles as individual tasks on parallel computer cores, the overall computation is much faster, potentially allowing real-time analysis of field data for fossil fuel exploration. Credit: Hatem Ltaief Software could transform underground imaging of fossil fuel reserves by providing unprecedented detail in record time. For an oil-rich country like the Kingdom of Saudi…

4 Ways to Take Back Your Business and Get Things Back in Order

It often happens in business when a business owner gets complacent, and things start going wrong in day-to-day operations. Things that are supposed to happen like clockwork are falling by the wayside. But it’s not too late. Who is the owner? You are. This is your time to step up and get things back in order. Here are 4 ways to take over your business. 1. Humble Yourself and Rally The first thing a leader needs to do is humbly…