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Category: Construction Engineering

Italy collapse points to difficulties with aging bridges

A view of the evacuated houses built under the remains part of the collapsed Morandi highway bridge, in Genoa, northern Italy, Wednesday, Aug. 15, 2018. A bridge on a main highway linking Italy with France collapsed in the Italian port city of Genoa during a sudden, violent storm, sending vehicles plunging 90 meters (nearly 300 feet) into a heap of rubble below. (AP Photo/Nicola Marfisi) The bridge that collapsed in the Italian port city of Genoa was considered a feat…

Testing Golang Services at Wealthfront – Engineering Blog – Wealthfront

As Wealthfront grows our company and products, scaling our engineering organization requires robust, well tested infrastructure and tooling provided by the DevOps team. In this blog post, I’ll go over how DevOps is defined at Wealthfront, why we use Go, and a brief overview of how we test Go. What is DevOps at Wealthfront? At Wealthfront, we define DevOps as the team that manages the hardware and software infrastructure to support and develop our products. While backend engineering teams mainly…

How to Move to an EAV Model to Support Scalability

Photo by Max Langelott (https://unsplash.com/photos/d3_cFMe97Ec) Scaling is hard. Design decisions that initially seemed reasonable break down with little warning, and suddenly even the simplest parts of your data model need to go through a complex re-architecture. We’re tackling this problem at Slack. A lot of our early design decisions made sense for small workspaces, but can be inefficient for large Enterprise Grid workspaces, where we can have thousands of users in one organization. For example, we have a MySQL table…

Economic Graph Research Program: Insights and Updates

In April 2017, we launched the Economic Graph Research Program (EGRP) to encourage researchers, academics, and data-driven thinkers to solve some of the world’s most challenging economic problems. Today, I’m happy to share the latest details on the evolution of the EGRP as well as some of the interesting findings based on the work of the research teams. Unique data, compelling findings LinkedIn has a unique dataset. Our highly-structured Economic Graph maps members, skills, jobs, and companies to provide insights…

Now teams of any size can turn off their VPN

Using a VPN is painful. Logging-in interrupts your workflow. You have to remember a separate set of credentials, which your administrator has to manage. The VPN slows you down when you’re away from the office. Beyond just inconvenience, a VPN can pose a real security risk. A single infected device or malicious user can compromise your network once inside the perimeter. In response, large enterprises have deployed expensive zero trust solutions. The name sounds counterintuitive – don’t we want to…

A Differencing Engine for Digital Forensics in the Cloud

Forest Monsen and Kevin Glisson, Netflix Security Intelligence and Response Team Can you spot the difference? Hint: it’s not the bow tie. The Netflix Security Intelligence and Response Team (SIRT) announces the release of Diffy under an Apache 2.0 license. Diffy is a triage tool to help digital forensics and incident response (DFIR) teams quickly identify compromised hosts on which to focus their response, during a security incident on cloud architectures. Features Efficiently highlights outliers in security-relevant instance behavior. For example,…

An efficient system for self-contained executables – Facebook Code

Distributing large pieces of software to thousands of machines with a wide variety of configurations can pose a significant operational challenge, requiring a process to identify and copy precisely the right combination of dependent libraries and data files for each device. To make this faster, more robust, and more efficient, we have developed and deployed XARs, or eXecutable ARchives, a system for distributing self-contained executables that encapsulate both data and code dependencies. Our research has demonstrated that XARs can deliver…

Enhancing the Quality of Uber’s Maps with Metrics Computation

We previously highlighted some of the presentations delivered during our second annual Uber Technology Day. In this article, engineering senior software engineer and Uber Tech Day presenter Ines Viskic discusses how we ensure the accuracy of our maps through quality metrics. On the surface, Uber’s ridesharing technology may seem simple: a user requests a ride from the app, and a driver arrives to take them to their destination. Behind the scenes, however, a giant infrastructure consisting of thousands of services…

Dutch city to unveil world’s first 3D-printed housing complex

The southern Dutch city of Eindhoven plans to unveil the world’s first 3-D-printed housing complex next year, which its inventors believe could revolutionise the building industry by speeding up and customising construction. Printed in concrete by a robotic arm, the project backed by the city council, Eindhoven Technical University and several construction companies aims to see its first three-bedroomed home go up by June 2019. Known as Project Milestone, a housing complex of five homes of various shapes and…

Can airships take scenic flights back to the future?

A concept airship, the Aether, which Mr Henderson showed his research participants so they could conceptualise what a modern airship might be like. Credit: Massey University Massey University School of Aviation assistant lecturer Isaac Henderson has always been fascinated by airships, so he embarked on a master’s thesis to find out if they could be brought back into the mainstream. “We are starting to see modern airships in the freight and logistics sector, but very few people think they can…