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Category: Construction Engineering

Engineer invents one-of-a-kind surf rover machine

Dr. William Dally, a University of North Florida civil engineering professor, along with some of his students, operate the complete Surf Rover model scaled to one-quarter the actual size Credit: Joanna Norris, UNF Public Relations Director For his first job during college, William Dally worked in what he calls the surf zone—the area from the shoreline up to an ocean depth of 25 feet—placing rods to gather scientific data. Battered by the waves, the then 20-year-old civil engineering major thought…

New research modernizes rammed earth construction

Engineering professor Sumi Siddiqua (right) and graduate student Priscila Barreto (left). Credit: UBC Okanagan A building method as old as dirt is being re-examined as a ‘new’ and viable modern construction material. Compressed soil, also known as rammed earth, is a method of construction that dates back centuries. UBC Okanagan engineering professor Sumi Siddiqua, who has been researching the resurgence in rammed earth, says conventional cement is still the go-to for modern engineers. “Conventional cement construction is the principle…

How is it going so far?

This post is inspired by a very good blog post from one of my colleague in the US, which I really appreciated as I was a newcomer to the company. It was great to see what it is like working for Cloudflare after one year and to learn from the lessons she had learnt. I’ll try to do the same in three parts. Beginning with how my on-boarding went, my first customer experiences and finally what is my day-to-day life…

Then and Now: The Rethinking of Time Series Data at Wayfair

As Wayfair has grown and matured its software development and data center operations over the past decade, and particularly over the last five years, we have embraced the principle of providing maximum visibility into our processes and systems. The result is a very large logging and time series infrastructure built to receive a constant stream of application logs and metrics. Our logging infrastructure, built on the Elasticsearch stack, has benefited from continuous improvements from the Elastic company, as well as…

MU’s Engineers Without Borders continues efforts in Panama

A group of eight engineering students, two faculty members and two MU alums decided against traditional spring break trips in favor of a more charitable, alternative spring break venture. As part of Engineers Without Borders, the MU chapter traveled to Majé de Chimán, Panama, as part of their continued efforts to provide a reliable water distribution, filtration and storage system for the community there. Photos courtesy of Mizzou Engineers Without Borders. As part of Engineers Without Borders, the MU chapter…

Continuous Deployment with Spark Streaming (Part II) – Wealthfront Engineering Blog

In Part 1 of this series, we gave a brief look into the data platform at Wealthfront, focusing on how we minimize data processing downtime while redeploying our Spark Streaming jobs. In this final part of this series, we will describe how we coordinate the data in our serving layer and wrap the blog post up by showing how all the pieces fit together to make redeployments invisible to our customers. Coordinating the Serving Layer Our serving layer consists of…

Engineers propose coordinated control to assist drivers

Engineers have proposed a coordinated control architecture for motion management in advanced driver assistance systems (ADAS) to increase safety and comfort across all vehicles, regardless of ADAS specifics. They published their proposal in IEEE/CAA Journal of Automatica Sinica, a joint publication of the IEEE and the Chinese Association of Automation. “The modern automobile is a complex system of systems. How the functionalities of advanced driver assistance are implemented and coordinated across the systems of the vehicle is generally not…

Scaling for Growth: A Q&A with Uber’s VP of Core Infrastructure, Matthew Mengerink

As the Vice President of Engineering for Uber’s Core Infrastructure group, Matthew Mengerink faces a daunting task. He oversees 350 engineers across four teams tasked with not only maintaining the platform on which 3,500 microservices run, but also figuring out how to scale, improve, and modernize that infrastructure for Uber’s future. Joining Uber in September 2017, Matthew brings experience managing infrastructure at technology stalwarts such as eBay, PayPal, and, most recently, YouTube. He mixes this technical pedigree with a candid…

Sealed classes opened my mind

How we use Kotlin to tame state at Etsy Bubbly the Baby Seal by SmartappleCreations Etsy’s apps have a lot of state.  Listings, tags, attributes, materials, variations, production partners, shipping profiles, payment methods, conversations, messages, snippets, lions, tigers, and even stuffed bears.   All of these data points form a matrix of possibilities that we need to track.  If we get things wrong, then our buyers might fail to find a cat bed they wanted for Whiskers.  And that’s a…

Continuous Deployment with Spark Streaming (Part I) – Wealthfront Engineering Blog

Here at Wealthfront, our mission is to democratize access to sophisticated financial advice. One of the ways we accomplish that is by applying data processing technologies to financial services. In this two-part blog post we will describe how our near-real time data platform is built to support continuous deployment in order to allow us to ship new features quickly and safely. Part 1 of this series will give a high level overview of the data platform at Wealthfront and describe…