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Category: Construction Engineering

Exploring the potential of tall timber buildings

Justin Brown (left) came to study with Dr Minghao Li (right) after he became aware that much of the latest research on seismic design and timber structures was being generated from UC’s College of Engineering. Credit: Te Rāngai Pūkaha University of Canterbury (UC) engineering doctoral candidate Justin Brown is guiding future timber core-wall design with his research, paving the way for eco-friendly, mid- to high-rise buildings. “The emergence of engineered wood products has started a renaissance for using timber as…

Contextualizing Airbnb by Building Knowledge Graph – Airbnb Engineering & Data Science – Medium

The Infrastructure The diagram below illustrates the architecture of the knowledge graph service as of today at Airbnb. It can be divided into 3 components: graph storage, graph query API, and storage mutator. In this section, we will get into the details for each of them. Architecture of the knowledge graph infrastructure Graph Storage The first thing we built for the knowledge graph infrastructure is a graph storage module. We adopted an in-house relational data store as the underlying database,…

HTTP/3: From root to tip

HTTP is the application protocol that powers the Web. It began life as the so-called HTTP/0.9 protocol in 1991, and by 1999 had evolved to HTTP/1.1, which was standardised within the IETF (Internet Engineering Task Force). HTTP/1.1 was good enough for a long time but the ever changing needs of the Web called for a better suited protocol, and HTTP/2 emerged in 2015. More recently it was announced that the IETF is intending to deliver a new version – HTTP/3.…

Drones shown to make traffic crash site assessments safer, faster and more accurate

Capt. Rob. Hainje and Capt. Terry Ruley of the Tippecanoe County Sheriff’s Office test drone technology for use at vehicular crash sites. The office used the technology to map vehicular crash scenes 20 times in 2018. Credit: (John Bullock and Erin Easterling/Purdue University) Idling in a long highway line of slowed or stopped traffic on a busy highway can be more than an inconvenience for drivers and highway safety officers. It is one of the most vulnerable times for “secondary…

How Serverless Platforms are Changing to Enable New Applications (video)

Serverless technology is still in its infancy, and some people are unsure about where it’s headed. Join Zack Bloom, Director of Product for Product Strategy at Cloudflare, on a journey to explore the serverless future where developers “just write code,” pay for exactly what they use, and completely forget about where code runs; then see why current platforms won’t be able to get developers all the way there. The talk below was originally presented and recorded at Serverless Computing London…

Building a Scalable and Reliable Map Interface for Drivers

By Chris Haugli This article is the sixth in a series covering how Uber’s mobile engineering team developed the newest version of our driver app, codenamed Carbon, a core component of our ridesharing business. Among other new features, the app lets our population of over three million driver-partners find fares, get directions, and track their earnings. We began designing the new app in conjunction with feedback from our driver-partners in 2017, and began rolling it out for production in September…

Introducing ThirdEye: LinkedIn’s Business-Wide Monitoring Platform

At LinkedIn, we have many different monitoring systems—each with its own role and granularity— ranging from quarterly reports about the business as a whole to the lowest levels of system-specific latency and availability. However, these systems don’t operate in vacuums—sometimes, issues or changes that are flagged by one system will go on to cause problems in another area. While system-specific monitoring is valuable and necessary, we also need to have an overall platform that allows us to see how the…

A Look at Building Tools for Square Developers

At Square, the Developers team exposes APIs that allow third-party developers to build custom business-processing solutions. On October 18, we announced to developers using our APIs that webhooks would now support retries. If a webhook cannot be delivered, our system will now be able to retry multiple times until a successful delivery. Square’s webhook delivery system is a service I’ll refer to as Webhooks. Improving Webhooks’ reliability was a project I had the opportunity to dive into the first week…

Recovering Files from a Dead Hard Drive

Recovering files from a dead hard drive is not at all an easy task. But we want to help you with all of it. In today’s post, we are going to give you a step by step guideline as to how you can recover files from dead hard drive. And don’t worry, if they don’t work for you, we will give you even better options that you may consider. So continue reading and give it a shot. The drive should…

The development of a hybrid micro mixer for biological and chemical experiments

Components of the mixing system (scaled). All measurements are in mm. Credit: Majid Warkiani An international team of scientists including an employee of I.M. Sechenov First Moscow State Medical University (MSMU) has developed a device for mixing chemical and biological reaction feeds. The team managed to increase the mixing efficiency up to 90 percent. The new device will be used in biological and chemical experiments. The article was published in the RSC Advances journal. Small mixing devices are used in…