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Category: Construction Engineering

Engineering Data Analytics with Presto and Parquet at Uber

From determining the most convenient rider pickup points to predicting the fastest routes, Uber uses data-driven analytics to create seamless trip experiences. Within engineering, analytics inform decision-making processes across the board. As we expand to new markets, the ability to accurately and quickly aggregate data becomes even more important. In early 2014, Uber only had several hundred employees worldwide. But by late 2016, we had over two thousand people running more than one hundred thousand analytic queries daily. We needed…

Introducing ELF: An extensive, lightweight and flexible platform for game research | Engineering Blog | Facebook Code

Games provide a useful environment for artificial intelligence research. Within a game environment, the amount of labeled training data available for training AI models is nearly infinite, low-cost, replicable, and more easily obtained at a much higher rate than in real-world experiments. These attributes are helping facilitate research underway in Facebook’s AI Research lab (FAIR) to explore both short-term milestones like demonstrating the strength of AI in multiple complicated game environments, and long-term goals aimed at applying AI to real-world…

Virtual laboratory—fast, flexible and exact

From input data obtained through experiments, via the virtual laboratory, to creation of material cards for component simulation. Credit: © Photo Fraunhofer IWM During the forming process, sheet metal materials are often stressed to their limits. Computer simulations are used to test how far it is possible to go in production. However, the simulation is only ever as exact as the data on which it is based. Fraunhofer scientists have now developed a virtual test laboratory that allows them to…

Innovative bracing for durable structures

Across the world, severe earthquakes regularly shake entire regions. More than two billion people live in danger zones – many of them in structures not built to withstand an earthquake. Together with partners from industry, researchers at the Fraunhofer Institute for Wood Research WKI are developing building materials designed to prevent buildings from collapsing in a natural disaster. Earthquakes repeatedly claim too many lives, a fact that experts trace back to a lack of preventative measures – particularly when it…

Engineering Ethics Blog: The Legacy of Hanford

One era’s triumph can turn into another era’s disaster, and perhaps no better example of that in the field of nuclear energy and weapons is the Hanford Site in south-central Washington State, about 200 miles from Seattle.  During the height of World War II, physicist Enrico Fermi designed a nuclear reactor for the Dupont Corporation to produce plutonium that was needed for nuclear weapons, as part of the ultra-secret Manhattan Project.  The small farming community of Hanford, Washington was selected…

Engineering On-Demand Transportation for Business with Uber Central

When Uber launched in 2009, our mission was simple: make transportation as reliable as running water everywhere, for everyone. While our mission remains the same today, the number of Uber use cases have grown dramatically, motivating our engineers to think creatively about how we leverage our existing tech stack. In April 2017, Uber re-launched Uber Central (Central), an on-demand transportation solution that gives organizations a more efficient way to manage business travel. With Central, businesses can request a ride for…

Saving the planet with flexible electronics

Fig. 1 Push coating devices onto substrates with polydimethylsiloxane (PDMS) films. 1. Deposit approximately 5 microliters of solution on a substrate; 2. Press the PDMS stamp against it. 3. Wait for the solvent to diffuse inside PDMS and remove PDMS. Credit: University of Electro Communications “My research on organic photovoltaic (OPVs) devices reflects my fascination with electronic gadgets and concerns about the environment,” says Varun Vohra, tenure-track assistant professor at the Department of Engineering Science, UEC, Tokyo. “So I want…

Novel acoustics project aims to improve virtual reality, explore ear shape effects on 3-D sound

Screenshot of a visual rendering model of Notre Dame Cathedral, created based on plans, laser scan data and site visits. Credit: Ghost Orchestra Project/LIMSI Paris’ Cathedral of Notre Dame has a ghost orchestra that is always performing, thanks to a sophisticated, multidisciplinary acoustics research project that will be presented during Acoustics ’17 Boston, the third joint meeting of the Acoustical Society of America and the European Acoustics Association being held June 25-29, in Boston, Massachusetts. In the project, computer models…

iOS linting at Pinterest – Pinterest Engineering – Medium

Michael Schneider | Pinterest engineer, iOS Core Experience Coding consistency and guidelines are critical in a code base where a large group of developers work every day and new engineers join every week. In order to control code quality and enforce best practices, we recently added linting to our infrastructure to help developers write better code. Linting is the process of running a program that analyzes code for potential errors. At the same time, we were moving our current build…

Faster App Recovery With Bounded Queues – Square Corner Blog – Medium

A problem we’ve encountered in the past is when a Ruby app becomes unresponsive due to downstream issues. After the issue is resolved, the app continues to be unresponsive or very slow to process requests. While a restarts clear it up immediately, but the less manual steps we have to take to recover an app, the better. Because testing on production is bad, we need a simple way of replicating this locally. Replication At Square, our Ruby apps use NGINX…