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Category: Construction Engineering

Engineering Extreme Event Forecasting at Uber with Recurrent Neural Networks

At Uber, event forecasting enables us to future-proof our services based on anticipated user demand. The goal is to accurately predict where, when, and how many ride requests Uber will receive at any given time. Extreme events—peak travel times such as holidays, concerts, inclement weather, and sporting events—only heighten the importance of forecasting for operations planning. Calculating demand time series forecasting during extreme events is a critical component of anomaly detection, optimal resource allocation, and budgeting. Although extreme event forecasting…

Scaling Beyond MySQL – Wealthfront Engineering Blog

Wealthfront is growing fast, and the quantity of data we collect is growing faster. With the launch of Path, we’ve seen a large increase in the number of non-Wealthfront accounts our customers have linked over time (see below). We have plans to increase the breadth of automated financial advice we provide for our clients, so we’re expecting to see the number of linked accounts accelerate. On top of this, we have an ever-growing set of financial services we offer, giving…

Evolving the Netflix Data Platform with Genie 3 – Netflix TechBlog – Medium

by Tom Gianos The big data space continues to change at a rapid pace. Data scientists and analysts have more tools than ever at their disposal whether it be Spark, R, Presto, or traditional engines like Hive and Pig. At Netflix the Big Data Platform team is responsible for making these tools available, reliable and as simple as possible for our users at massive scale. For more information on our overall architecture you can see our talks at QCon 2016,…

Counting things, a lot of different things…

Back in April we announced Rate Limiting of requests for every Cloudflare customer. Being able to rate limit at the edge of the network has many advantages: it’s easier for customers to set up and operate, their origin servers are not bothered by excessive traffic or layer 7 attacks, the performance and memory cost of rate limiting is offloaded to the edge, and more. In a nutshell, rate limiting works like this: Customers can define one or more rate limit…

Oregon city approves permit for US’ first all-wood high-rise

This Nov. 15, 2016, file photo shows a piece of cross-laminated timber, or CLT , in Portland, Ore. City officials in Portland have approved a construction permit for the first all-wood high-rise building in the nation. The building uses the new technology called cross-laminated timber that tests have shown can withstand the worst earthquakes. Developers worked with scientists at Portland State University and Oregon State University to prove through testing that the materials meet all building and fire safety codes.…

Drivers bewildered by twisting Chinese interchange

Five suspended levels and cars going in all directions: a new highway interchange is driving motorists to tears, as they find themselves lost in a concrete maze resembling a plate of spaghetti. Five suspended levels and cars going in all directions: a new highway interchange is driving motorists to tears, as they find themselves lost in a concrete maze resembling a plate of spaghetti. After eight years of construction, the Huangjuewan interchange was completed last week on the outskirts of…

A Distributed Simulation Service – Netflix TechBlog – Medium

By Satyajit Thadeshwar, Mayank Agarwal, Sangeeta Narayanan & Kevin Lew Hundreds of models of smart TVs, game consoles, mobile devices, and other video streaming devices get shipped with a Netflix app pre-installed. Before shipping these devices, manufacturers need to have the app certified on their device firmware. Certification involves running a series of tests that validate the behavior of the Netflix app under different positive & negative scenarios, and this process is repeated each time a new model of a…

Flying metal detectors? Navy tests new unmanned mine-detection system

Cory Stephanson, president and CEO of Broadband Discovery Systems, Inc., launches a small quadrotor platform as Dr. Rosemarie Oelrich, scientist, Naval Surface Warfare Center Carderock, uses a handheld Android device to monitor data during the Ship-to-Shore Maneuver Exploration and Experimentation (S2ME2) Advanced Naval Technology Exercise (ANTX) 2017 at Marine Corps Base Camp Pendleton, Calif. Credit: U.S. Navy photo by John F. Williams/Released During a recent technology demonstration at Marine Corps Base Camp Pendleton, Dr. Rosemarie Oelrich and Dr. Cory Stephanson…

Proposed Regulatory Text for New Post-Tensioning OSHA Regulations

The following is an bridged version of the proposed regulatory text for the new post-tensioning OSHA Regulations as reported by Ironworkers.org (Sections #1, 6 and 9 relate to the post-tensioning activities). The controlling contractor shall ensure that the following is provided and maintained: (1)   Adequate access roads into and through the site for the safe delivery and movement of derricks, cranes, trucks, other necessary equipment, and the material to be erected and means and methods for pedestrian and vehicular control.  Exception: …

An Application-Level Edge Cache to Make Slack Scale

Professor Robin Dunbar, when studying Neolithic farming villages and primate troupes in the 90s, theorized that the maximum number of stable relationships we can keep is around 148, known popularly as Dunbar’s number. This upper bound is due to the mental dossier kept on individual’s relationships, but more importantly, the number of cross relationships between everyone else, whose number grows geometrically. Today, your Slack client is the window into your workplace, and teams have grown into the tens of thousands…