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Category: Electronics Engineering

Measuring optimally with spheres

With the miniaturized radio transmission inside the sphere, the measured data is transmitted live to a base station. Credit: Fraunhofer ENAS Bio-reactors are the cooking pots of biochemists and bio-technologists, in which pharmaceutical agents, enzymes or nematodes are produced for the purpose of biological pest control. A nutrient solution (such as heat, oxygen, acid or alkali) is used to regulate the pH value and the desired product is formed. The more optimal the conditions are, the greater the yield will…

The Rise of RoboAdvisors – Everything You Need to Know

Every day the world pushes forward with advances and, all of a sudden, what used to be the latest and greatest becomes outdated. Not long ago, choosing the right financial advisor was about finding a person you could trust with your finances. But now, the right advisor for you may not even be human. RoboAdvisors advise you virtually. By answering a series of questions designed to identify pertinent information such as financial goals, risk aversion, and time horizon these “advisors”…

getting access tokens. – Square Corner Blog – Medium

Implementing OAuth can be the hardest part of your integration, but it’s a must if you’re opening your app to other merchants. Here’s some help if you’re using PHP. OAuth is an important part in safely controlling access between developers’ applications and Square merchant accounts. If you are building your application for multiple Square accounts to use, you’ll need to implement it. In addition to this post, you should look at Square’s OAuth documentation while building your integration—it’ll always be the…

Getting to Know Dave Herman

Before joining LinkedIn in August of 2017, Dave worked at Mozilla for about seven years. There, he founded and led the Mozilla Research department, which contributed to the creation of a number of web-related technologies, including the Rust programming language, the asm.js subset of JavaScript and the subsequent WebAssembly standard, and the next-generation parallel web browser engine Servo. Prior to all that, Dave got his PhD in programming languages at Northeastern University in Boston.   Why are you so passionate…

How Etsy caches: hashing, Ketama, and cache smearing

At Etsy, we rely heavily on memcached and Varnish as caching tiers to improve performance and reduce load. Database and search index query results, expensive calculations, and more are stored in memcached as a look-aside cache read from PHP and Java. Internal HTTP requests between API servers are sent through and cached in Varnish. As traffic has grown, so have our caching pools. Today, our caching clusters store terabytes of cached data and handle millions of lookups per second. At…

Wearable computing ring allows users to write words and numbers with thumb

FingerSound uses wearable ring technology to detect numbers and letters drawn on fingers. Credit: Georgia Institute of Technology With the whirl of a thumb, Georgia Tech researchers have created technology that allows people to trace letters and numbers on their fingers and see the figures appear on a nearby computer screen. The system is triggered by a thumb ring outfitted with a gyroscope and tiny microphone. As wearers strum their thumb across the fingers, the hardware detects the movement. In…

Using Interleaving in Online Experiments to Accelerate Algorithm Innovation at Netflix

By Juliette Aurisset, Michael Ramm, Joshua Parks The Netflix experience is powered by a family of ranking algorithms, each optimized for a different purpose. For instance, the Top Picks row on the homepage makes recommendations based on a personalized ranking of videos, and the Trending Now row also incorporates recent popularity trends. These algorithms, along with many others, are used together to construct personalized homepages for over 100 million members. Fig. 1: An example of a personalized Netflix homepage. We…

What I learned at my first Cloudflare Retreat

For the last seven years, Cloudflare has taken the entire company off site for a few days at the end of the year for a company retreat. Back in 2010, this meant five people from the San Francisco office. This November, we had 453 employees from our San Francisco, Singapore, London, Champaign (Illinois), New York City, Washington (DC), and Austin (Texas) offices spend time together in Monterey, California. Knowing that so many teammates would be coming in from all over…

Spotify Spotlight

This is part 2 in our new interview series called “Spotify Spotlight.” In these interviews, we showcase Spotifiers working in a range of different tech roles, and learn more about their journey to Spotify and what they love about working here. What’s your name and where are you from? My name is Dara Elass, and I never know how to answer “where are you from”. My background is Syrian-American and I grew up in a few places: Saudi Arabia, Bahrain,…

Researchers develop new technique to model transplantation of the human liver

A team of scientists, physicians, and engineers from the Center for Engineering in Medicine (CEM) and the Transplant Center of the Massachusetts General Hospital (MGH) at the Harvard Medical School in Boston, MA reported the development of a new technology that enables researchers to better study liver transplantation in a pre-clinical setting. The model specifically examines the reperfusion stage of transplantation, when the liver is surgically implanted into the recipient patient. This reperfusion stage of liver transplantation is particularly important…