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Category: Construction Engineering

Eco-preneurs Use Renewable Energy to Rebuild Our Planet’s Reefs

Can technology help reverse the loss of coral reefs occurring across the planet? Initial trials of a system for restoring coral reefs show that it’s possible and practical to use renewable energy to draw minerals from the ocean itself to create structures that become homes for reef-building organisms. The accelerated process, developed by CCell Renewables, a marine engineering company, has demonstrated the ability to create healthy, living reefs at an accelerated rate in 500 small-scale trials conducted throughout the world. …

NASA astronauts launch from America in historic test flight of SpaceX Crew Dragon — ScienceDaily

For the first time in history, NASA astronauts have launched from American soil in a commercially built and operated American crew spacecraft on its way to the International Space Station. The SpaceX Crew Dragon spacecraft carrying NASA astronauts Robert Behnken and Douglas Hurley lifted off at 3:22 p.m. EDT Saturday on the company’s Falcon 9 rocket from Launch Complex 39A at NASA’s Kennedy Space Center in Florida. “Today a new era in human spaceflight begins as we once again launched…

The “Weight” is Over for Lightweight 3D-Printed Parts

Many Americans can relate to the weight challenge that faced Branch Technology in a project at Field Museum in Chicago. Instead of shedding a few extra pounds after the holidays, the 3D printing company worked with engineers from Chicago Flyhouse to face a task that involved safely supporting approximately 28 tons in a facility that attracts more than 1.65 million visitors annually. Branch Technology’s solution involved the use of its patented additive manufacturing process to create unique architectural products. Chicago…

Meta-Graph: Few-Shot Link Prediction Using Meta-Learning

This article is based on the paper “Meta-Graph: Few Shot Link Prediction via Meta Learning” by Joey Bose, Ankit Jain, Piero Molino, and William L. Hamilton Many real-world data sets are structured as graphs, and as such, machine learning on graphs has been an active area of research in the academic community for many years. One popular machine learning task on graphs is link prediction, which involves the prediction of missing relationships/edges between the nodes in the graph. For instance,…

Spotify Modernizes Client-Side Architecture to Accelerate Service on All Devices

Engineer Carl Engström explains how lifting the 10,000 limit on Liked Songs enabled his team to address a much deeper issue and improve the listening experience of end users, whatever their device or network.    At first glance, lifting the 10,000 limit on Liked Songs seems like a simple engineering exercise. Some Reddit commentators even claimed to have identified a few lines of code that set the restriction. Why not just delete them and tidy up any gaps? As the…

Keeping Customers Streaming — The Centralized Site Reliability Practice at Netflix

By Hank Jacobs, Senior Site Reliability Engineer on CORE We’re privileged to be in the business of bringing joy to our customers at Netflix. Whether it’s a compelling new series or an innovative product feature, we strive to provide a best-in-class service that people love and can enjoy anytime, anywhere. A key underpinning to keeping our customers happy and streaming is a strong focus on reliability. Reliability, formally speaking, is the ability of a system to function under stated conditions…

How Netflix is able to enrich VPC Flow Logs at Hyper Scale to provide Network Insight

By Hariharan Ananthakrishnan and Angela Ho The Cloud Network Infrastructure that Netflix utilizes today is a large distributed ecosystem that consists of specialized functional tiers and services such as DirectConnect, VPC Peering, Transit Gateways, NAT Gateways, etc. While we strive to keep the ecosystem simple, the inherent nature of leveraging a variety of technologies will lead us to complications and challenges such as: App Dependencies and Data Flow Mappings: Without understanding and having visibility into an application’s dependencies and data…

Automotive Radar Chip Processes 30 Gb/s of Data

Tel Aviv-based Arbe has developed an automotive-grade (AEC-Q100) high-resolution radar chipset designed to help autonomous vehicles, as well as passenger vehicles equipped with advanced driver-assistance systems (ADAS), detect and identify objects. The technology can separate, identify, and track hundreds of objects in high horizontal and vertical resolution at a long range in a wide field of view. Arbe claims its radar chipset generates an image 100 times more detailed than any other solution on the market today. The system is then…

Researcher Designs and Creates New Cloaking Material

Guoliang Huang is the James C. Dowell Professor in the Department of Mechanical and Aerospace Engineering. Stealth technology, the idea of reducing the ability of the enemy to detect an object, has driven advances in military research for decades. Today, aircraft, naval ships and submarines, missiles and satellites are often covered with radar-absorbent material, such as paint, to hide or cloak them from radar, sonar, infrared and other detection methods. A cloak is a coating material that makes an object…

Enabling highways and bridges to prevent their own damage

Luna Lu is investigating unique ways to build artificial intelligence into concrete-paved bridges and highways, enabling them to prevent and repair their own damage. Credit: Purdue University photo/John Underwood Roads always seem to need repairs. Luna Lu is giving concrete the ability to “talk” and even heal itself. Her lab at Purdue University is developing technology that would allow concrete-paved bridges and highways to reveal more accurately when they need repairs and to come equipped with materials that respond to…