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Engineering News

The world’s first 3-D printed reinforced concrete bridge starts to take shape

The printing of concrete for the 3D-printed bridge has begun. Credit: Eindhoven University of Technology Today the Built Environment department’s concrete printer starts printing the world’s first 3-D printed reinforced, pre-stressed concrete bridge. The cycle bridge will be part of a new section of ring road around Gemert in which the BAM Infra construction company is using innovative techniques. ne of the advantages of printing a bridge is that much less concrete is needed than in the conventional technique in…

New spectral eye video database SPEED revolutionises eye-tracking

Info-graph for SPEED showing the gender diversity, iris-colour diversity, and nationality diversity within the database as well as example images taken from the spectral video streams. The videos were taken under two illumination conditions: sunny daylight and office light. The example images demonstrate the different conditions incorporated into the database: a) standard conditions, b) shadows, c) strong reflections from daylight, d) use of sunglasses, e) strong reflections from office light, f) extreme angles in daylight g) hair occlusion, h) extreme…

Light-scattering tool peers into pancreas to find cancer

NSF-funded researchers have developed a technique that is based on the physical principles of light scattering to non-invasively determine the properties of subcellular structures (such as cell nuclei) in organs, providing physicians with more diagnostic information. Credit: Lev T. Perelman, Beth Israel Deaconess Medical Center and Harvard University Pancreatic cancer is difficult to detect early because the pancreas is deep inside the abdomen, making potentially cancerous cells hard to reach and identify without surgery. Researchers funded by the National Science…

Writing fast, deterministic and accurate Android Integration tests

Our choice for Android UI tests is Espresso, which is arguably the best, most popular and recommended library for writing integration tests. However, the extra confidence provided by a solid test suite can be quickly affected by flaky tests creeping up and undermining everyone’s trust on them. In fact, flaky tests are poison! Integration tests are at the very top of the Test Pyramid, but that doesn’t mean that they have to be slow, brittle or expensive to write. They…

Site Speed Monitoring in A/B Testing and Feature Ramp-up

Co-authors: Jiahui Qi and David He   Everyday, LinkedIn serves hundreds of millions of pageviews to our members, from job searches to the news feed. Our network has grown to over 500 million members, and throughout our journey, “members-first” has been a fundamental value that we’ve carried. For our mission to continue improving the member experience, LinkedIn’s site speed infrastructure is a critical component because it provides site performance metrics to the engineers who develop and roll out features to…

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…

Airbus and Boeing eye lucrative maintenance market

Airbus and Boeing are both looking to target the lucrative maintenance market in the coming years Airbus and Boeing wheeled out the usual round of order announcements at the Paris Air Show on Wednesday, but alongside the big ticket purchases, the aerospace rivals are also eyeing the lucrative maintenance and servicing market as they seek to boost growth. Boeing finalised an order for three 787 Dreamliners to Israeli carrier El Al and inked a memorandum of understanding with leasing company…

When the Internet (Officially) Became the Public Square

Souvenir Postcard by unknown Sometimes, well-intended efforts to prevent unacceptable behavior run into the reality of what it means to have an open and free society. That is what happened at the Supreme Court on Monday. The Supreme Court issued an opinion confirming something we at Cloudflare have long believed — that the First Amendment protects access to the Internet. Using sweeping language, Justice Kennedy compared internet access to access to a street or park, “essential venues for public gatherings…

Bug-proof communication with entangled photons

Fraunhofer IOF‘s quantum source. Designed to be fully operational even after extreme stress. Credit: Fraunhofer IOF Due to the rapidly growing processing power of computers, conventional encryption of data is becoming increasingly insecure. One solution is coding with entangled photons. Fraunhofer researchers are developing a quantum coding source that allows the transport of entangled photons from satellites, thereby making an important step in the direction of tap-proof communication. In addition to the quantum source, researchers from various Fraunhofer institutes will…

Top 7 Free Android Apps For Job Seekers

The era of newspapers with job offers is gone away. Today, everyone is looking for new career opportunities using websites or application that can be installed directly on the smartphone. Websites are great, especially if you have direct access to them and have enough time to check them for new vacancies. However, most of us are too busy to do that, thus we need something less time consuming and more effective. Just like the apps. Why Apps are Better If…