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Author: engineering

Two Summers at Coursera – Coursera Engineering – Medium

This post was written by Alex Ozdemir in the fall of 2018. I’ve been lucky enough to intern at Coursera not just once, but twice. While I had been an intern at other software engineering firms before, my experiences at Coursera gave me a fundamentally deeper understanding of software engineering than my prior internships did. In this blog post I’ll explore the work I did and the lessons I learned, and reflect on what it was about Coursera that made…

Meet Jen Wang: Chemist. Traditional Chinese Medicine Enthusiast. Data Scientist.

How does a chemist with a postdoc in drug design end up working as a data scientist at an e-commerce home furnishings company? “Ha, so it’s a long story actually,” says Jen Wang, data science manager on the Marketing team at Wayfair.  Jen always had an interest in healthcare, and was well on her way to gaining a permanent position in the field; she earned a BS in Chemistry from Nanjing University, a PhD in Physical Chemistry from the University…

Meet John Walk: Ice Climber. Nuclear Physicist. Data Scientist.

John stands out in a room. With a flaming red beard and an arm of tattoos, he looks like he might be more at home in a Nordic tavern than an office. But once you notice his Captain Hammer t-shirt, the Gandalf action figure on his desk, and start talking to him about Nuclear Physics, you see that he’s right at home in a room full of data scientists. Science runs deep in John. So deep he spent a decade…

New dual-cavity design emits more single photons that can carry quantum information at room temperature — ScienceDaily

MIT researchers have designed a way to generate, at room temperature, more single photons for carrying quantum information. The design, they say, holds promise for the development of practical quantum computers. Quantum emitters generate photons that can be detected one at a time. Consumer quantum computers and devices could potentially leverage certain properties of those photons as quantum bits (“qubits”) to execute computations. While classical computers process and store information in bits of either 0s or 1s, qubits can be…

Research team introduces wearable audio dataset

Recordings with many different hats, headphones and clothing styles are included within the data collected by the researchers. Credit: Coordinated Science Laboratory at the University of Illinois at Urbana-Champaign Researchers studying wearable listening technology now have a new data set to use, thanks to University of Illinois at Urbana-Champaign graduate student Ryan Corey and his team. Debuting at the International Conference on Acoustics, Speech, and Signal Processing (ICASSP) this week, the first-of-its-kind wearable microphone impulse response data set is invaluable…

Employing QUIC Protocol to Optimize Uber’s App Performance

Uber operates on a global scale across more than 600 cities, with our apps relying entirely on wireless connectivity from over 4,500 mobile carriers. To deliver the real-time performance expected from Uber’s users, our mobile apps require low-latency and highly reliable network communication. Unfortunately, the HTTP/2 stack fares poorly in dynamic, lossy wireless networks, and we learned that poor performance can often be traced directly to Transmission Control Protocol (TCP) implementations buried in OS kernels. To address these pain points,…

HTTP/2 progressive image streaming

Progressive image rendering and HTTP/2 multiplexing technologies have existed for a while, but now we’ve combined them in a new way that makes them much more powerful. With Cloudflare progressive streaming images appear to load in half of the time, and browsers can start rendering pages sooner. In HTTP/1.1 connections, servers didn’t have any choice about the order in which resources were sent to the client; they had to send responses, as a whole, in the exact order they were…

Blood and sweat take training app to the next level

The armband measures your blood and sweat and sends the information to a training app. Credit: KTH The Royal Institute of Technology Last year about 1,000 runners were forced to quit the Stockholm Marathon due to extreme hot temperatures and the difficulty in staying hydrated. Researchers at KTH Royal Institute of Technology have developed a multifaceted measuring technology that is able to detect a number of conditions in the human body, from dehydration to renal failure. Future applications include both…

Better HTTP/2 Prioritization for a Faster Web

HTTP/2 promised a much faster web and Cloudflare rolled out HTTP/2 access for all our customers long, long ago. But one feature of HTTP/2, Prioritization, didn’t live up to the hype. Not because it was fundamentally broken but because of the way browsers implemented it. Today Cloudflare is pushing out a change to HTTP/2 Prioritization that gives our servers control of prioritization decisions that truly make the web much faster. Historically the browser has been in control of deciding how…

CloudMounter – Free Space By Mounting Cloud Storage

Since the advent of computers, people have been moving from one type of storage device to another. It all started with the floppy disk, and fast forward to today, you don’t even need a physical device to store your data as you can go for cloud storage where your data would be omnipresent. Statistics say that there are 1.8 billion people worldwide using personal cloud storage which directly relates to a huge market, that is present to tackle the issues…