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Category: Mechanical Engineering

Keeping our users safe

To everyone in Cloudflare, account security is one of our most important tasks. We recognize that to every customer on our platform, we are critical infrastructure. We also know that the simplest attacks often lead to the most devastating of outcomes. Most people think that if they are going to get hacked it will be by some clever ”zero day”. The reality couldn’t be farther from the truth. Attackers are smart and they have realized that even in 2018, the…

Brand new REU materializes at Mizzou Engineering

Principal investigator Heather Hunt, associate professor of Bioengineering, will lead the College of Engineering’s latest REU, “REU: Creative Approaches to Materials Design and Processing,” this summer. Mizzou Engineering has been awarded a third prestigious National Science Foundation (NSF) Research Experience for Undergraduates (REU) Site, this one with a creative twist. Principal investigator Heather Hunt, associate professor of Bioengineering; co-principal investigator Mahmoud Almasri, associate professor of Electrical Engineering and Computer Science, and the materials-focused faculty in MU’s College of Engineering found…

Smart and comfortable new textiles for high-tech clothing

Prof. Dr. Andreas Greiner (left) and Prof. Dr. Seema Agarwal (right) with equipment for electrospinning at the University of Bayreuth. With backlighting, one can see the thin fibres from which nonwoven materials are formed. Credit: Christian Wißler Uncomfortable, rigid, with low air permeability: textile materials capable of conducting electricity can be awkward for day-to-day use. However, researchers at the University of Bayreuth, Donghua University in Shanghai, and Nanjing Forestry University have now developed new nonwoven materials that are electrically conductive…

Merge assistant for trucks takes over from the driver

PhD candidate Jan Loof in the electric Lupo in which he tested his merge assistent. Credit: Bart van Overbeeke Merging on the motorway or changing lanes: this may quite literally become an automatism for truck drivers in the long term. Jan Loof, mechanical engineer at Eindhoven University of Technology, has developed a system that can take over the steering and enable a vehicle to automatically merge in traffic. However, the driver will always exercise control of the steering wheel. First…

‘Smart cane’ could one day help flag gait problems, falling risks more quickly

Feeling a little unsteady and don’t know why? A pair of Vanderbilt University engineers have developed an instrumented cane that not only provides added support, but can also analyze your gait to determine your risk of falling. Nilanjan Sarkar, professor of mechanical and computer engineering, says the “IntelliCane” can quantitatively calculate falling risk as accurately as a physical therapist can with their own eyes. If you are a senior citizen, dizziness and balance problems can be a big deal.…

Laser experiments verify ‘turbulent dynamo’ theory of how cosmic magnetic fields are created — ScienceDaily

The universe is highly magnetic, with everything from stars to planets to galaxies producing their own magnetic fields. Astrophysicists have long puzzled over these surprisingly strong and long-lived fields, with theories and simulations seeking a mechanism that explains their generation. Using one of the world’s most powerful laser facilities, a team led by University of Chicago scientists experimentally confirmed one of the most popular theories for cosmic magnetic field generation: the turbulent dynamo. By creating a hot turbulent plasma the…

Dynamometer: Scale Testing HDFS on Minimal Hardware with Maximum Fidelity

Larger clusters submit more operations, and in the presence of the discussed performance regression, larger clusters also require a longer time to complete each operation. This combination results in a superlinear performance impact. In the process of investigating our original incident, we found that the performance regression was brought on by a seemingly innocuous change that had slipped into several upstream releases. The goal of the original change (discovered and fixed a few months later) was to fix a bug…

Gesture recognition device to fast-track with company’s invite to Techstars accelerator

SFU alumni Lukas-Karim Merhi and Gautam Sadarangani, co-founders of Biointeractive Technologies have been invited to join Techstars, one of the top accelerators in North America. The duo hopes to fast-track deployment of their gesture recognition wristband . Credit: SFU A company founded by a pair of Simon Fraser University alumni has been chosen to fast-track the deployment of its product—a gesture recognition wristband, the next frontier in human-machine interactions—under the mentorship of Techstars, one of North America’s biggest startup accelerators.…

3-D printing breakthrough for lightweight syntactic foams could help submarines dive deeper

A team of materials engineers at the NYU Tandon School of Engineering developed syntactic foam filaments and processes to 3D print them using off-the-shelf commercial printers. Credit: NYU Tandon School of Engineering A team of materials scientists at NYU Tandon School of Engineering has developed the first process to 3-D print components of syntactic foam—extremely strong and lightweight composites used in vehicles, airplanes, and ships. Their breakthrough holds particular promise for submarines because it will enable manufacturers to print components…

Fighting Financial Fraud with Targeted Friction – Airbnb Engineering & Data Science – Medium

How Airbnb Battles Chargebacks while Minimizing Impact to Good Guests On any given night, nearly two million people are staying in Airbnb listings in 191 countries around the world. The rapid growth of our global community is predicated on one thing: trust. We take a comprehensive approach to trust, which consists of both robust proactive measures and reactive support, but today I want to focus on some of the work we do ahead of time — and often in the background — to prevent fraudsters…