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Engineering News

Memory-Efficient Image Passing in the Document Scanner

In our previous blog posts on Dropbox’s document scanner (Part 1, Part 2 and Part 3), we focused on the algorithms that powered the scanner and on the optimizations that made them speedy. However, speed is not the only thing that matters in a mobile environment: what about memory? Bounding both peak memory usage and memory spikes is important, since the operating system may terminate the app outright when under memory pressure. In this blog post, we will discuss some…

#Chemsafety programming at #ACSSanFran | The Safety Zone

Posted By Jyllian Kemsley on Mar 30, 2017 in ACS National Meeting, Featured | The 253rd ACS National Meeting starts on Sunday in San Francisco. Here’s what’s planned for chemical and laboratory safety; the Division of Chemical Health & Safety has its usual CHAS-At-A-Glance ready for printing. You can also find CHAS and the Committee on Chemical Safety in the Expo at booth 1125. Note: I did not have time to proofread this after putting it together.…

Exploding pumps trigger Sciex mass spectrometer alert

The TV 801 turbo pump, which may fail and eject fragments. Credit: Sciex Scientific instrument maker Sciex has told owners of more than 2,000 mass spectrometers to immediately shut down the instruments because a catastrophic failure of turbo pumps manufactured by Agilent Technologies could “result in serious injury or death.” To date, Sciex says, no one has been injured. According to a safety notice dated March 13 for owners of API 4000, API 4000 Qtrap, and API 5000 model mass…

Dare to be different (part 2)

Culture at Spotify My co-workers at Spotify often quote the famous Peter Drucker saying:   “Culture eats strategy for breakfast”   And to be honest, when I first heard them say it I simply nodded, as it sounded smart and I didn’t disagree. However, having just hit month six at Spotify, I can now hopefully say I truly get what they were on about. Spotify talks about culture at every level. We interview for it, we preach about it and…

Ransomware Comes To the Heartland

Imagine the following scenario circa 1962.  From an aircraft carrier in international waters in the Gulf Coast near Houston, the USSR flies a team of helicopters that land in a parking lot outside a urology clinic in Baytown, Texas, on the Gulf Coast.  Soldiers with AK-47s surround the clinic and hold everyone in it hostage until all the files inside are loaded onto a helicopter.  Then the leader of the team informs the head of the clinic that they’re holding…

Tumblr Engineering — Rapid View Prototyping Using FBSnapshotTestCase …

As a platform that prides itself on being a home for artists and creatives alike, it only makes sense that we allow our users to fully customize their Tumblrs to fully express themselves. Here at Tumblr, the world is your oyster not only in terms of looks but also in how you create your theme. I wanted to demonstrate how you too can develop a theme using Redux and React. Since there are plenty of docs and tutorials on how…

Engineering – Medium Engineering

Medium’s engineers are anything but the textbook variety. Sure, they should be smart and fast, and demonstrate excellent technical knowledge to succeed at Medium. But even more, we are seeking engineers who embody curiosity, awareness, resoluteness, and empathy. The best engineers are flexible, proactive, and driven. They love what they already do and are dedicated in their ambition to learn to do more. Meet some of us Source link…

Accelerating Iteration Velocity on Dropbox’s Desktop Client, Part 1

Motivation Imagine you’re an engineer working on a new product feature that is going to have a high impact on the end user, like the Dropbox Badge. You want to get quick validation on the functionality and utility of the feature. Each individual change you make might be relatively simple, like a tweak to the CSS changing the size of a font, or more substantial, like enabling the Badge on a new file type. You could set up user studies,…

4 Principles for Making Experimentation Count – Airbnb Engineering & Data Science – Medium

For over two years I’ve been a Data Scientist on the Growth team at Airbnb. When I first started at the company we were running fewer than 100 experiments in a given week; we’re now running about 700. As those of us in Growth know all too well, such growth does not happen organically. Instead, it comes about through cultivation. For us, this has meant not just building the right tools, such as our internal Experiment Reporting Framework [ERF], but…

In Praise of Doppler Weather Radars

On Mar. 28, 1920, a series of more than 30 deadly tornadoes made widespread paths of destruction through the central and southern U. S. and caused deaths from Michigan all the way to LaGrange, Georgia.  Shortly before 6 P. M., that southern mill town was struck by a tornado with an estimated Fujita rating of F3, which means its winds probably ranged from 158 to 206 MPH.  After wrecking a cluster of worker’s houses, the town’s main mill and factory…