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Category: Mechanical Engineering

A step toward faster, more accurate breast cancer detection

Credit: University of California – Berkeley Over the course of her lifetime, a woman has a one in eight chance of developing breast cancer. The earlier the cancer is detected, the more likely bad luck can turn to good. Now new technology being developed by UC Berkeley engineers could dramatically improve the speed and accuracy of early breast cancer detection through the use of microfluidics. Mechanical engineering professor Lydia Sohn and her research group have devised a totally new…

Accelerating Deep Neuroevolution: Train Atari in Hours on a Single Personal Computer

By Felipe Petroski Such, Kenneth O. Stanley and Jeff Clune We recently published an article announcing five papers on deep neuroevolution, including the discovery that genetic algorithms can solve deep reinforcement learning problems as well as popular alternatives, such as deep Q-learning and policy gradients. That work follows on Salimans et al. 2017, which showed the same for evolution strategies (ES), another neuroevolution algorithm. We further described how ES can be improved by adding exploration in the form of a…

Digital Advertising and Causal Impact: Using Data Science to Power a Delightful Customer Experience

As data scientists, we face a variety of problem types. One of our critical challenges is identifying the proper methodological approach to solve each problem. By doing this, we avoid force-fitting the wrong tool to solve a problem, and we avoid having to reformulate a question to fit a specific method. One way to characterize problems is by the type of results that answer the question at hand. For many data science questions, we can use predictive frameworks. Tasks such…

Event Sourcing made Simple – Kickstarter Engineering

tl;dr: Event Sourcing is to data what Git is to code. We’ve implemented a minimal event sourcing framework at Kickstarter to power d.rip. It’s simple and it has made our life so much better! Read on! Most software developers use a tool to keep track of code history. Git is a fantastic example that’s used widely across the industry. Type git log and you can see all the changes made to a codebase. Who made the change, when it happened,…

Super Simple Serverless eCommerce – Square Corner Blog – Medium

Serverless Functions using AWS Lambda For our serverless function, we’ll process the Square catalog variant ID that is being sent from our form in our static site, and then create a checkout URL to redirect our user to. To do this, we’ll use Square’s JavaScript SDK inside our function to more easily generate the URL we need. You’re more than welcome to attempt using just AWS tools for creating and deploying the function, but we’re going to just use Serverless for…

Samza Aeon: Latency Insights for Asynchronous One-Way Flows

Stream processing with Samza Now that we’ve chosen our starting and ending events and are emitting them to Kafka, we need to be able to determine the latency between our starting event and our end event. To do that, we’ll use Samza, a stream processing framework built to consume events from Kafka, and will perform some computation over them. In this case, we’ll be using Samza to determine the time difference between our StartTrackingEvent and our EndTrackingEvent, the latency of…

Flight paths of bees and cuckoos could bring savings to airlines

Collaboration of Warsaw-based and Colombian scientists has resulted in the creation of software to optimize the routes of passenger aircraft, inspired to a significant degree by the social behavior of insects and birds. Credit: IPC PAS, Grzegorz Krzyzewski, AirPoint Flight Simulator Experience The flight routes of passenger aircraft are generally well established. In practice, unforeseen factors, mainly related to the weather, often force pilots to cover more kilometres than anticipated. A Polish-Colombian team of scientists and engineers, inspired by the…

Titus, the Netflix container management platform, is now open source

by Amit Joshi, Andrew Leung, Corin Dwyer, Fabio Kung, Sargun Dhillon, Tomasz Bak, Andrew Spyker, Tim Bozarth Today, we are open-sourcing Titus, our container management platform. Titus powers critical aspects of the Netflix business, from video streaming, recommendations and machine learning, big data, content encoding, studio technology, internal engineering tools, and other Netflix workloads. Titus offers a convenient model for managing compute resources, allows developers to maintain just their application artifacts, and provides a consistent developer experience from a developer’s…

How machine learning helped develop a new algorithm that could add life to bridges

A new algorithm developed by the University of Surrey could help structural engineers better monitor the health of bridges and alert them to when they need repair faster. Many authorities and organisations use structural health monitoring systems to keep track of the health of bridges, along with the weight of the traffic that it withstands on a day-to-day basis. This leads to a very high sampling rate of data, with some reaching at least 10 Hz and databases that have…

Researchers conduct first-ever combustion experiment with X-rays

Inside a gas turbine engine’s combustor, scientists use the world’s strongest X-ray source at the Advanced Photon Source at Argonne National Laboratory to peer inside formally unseen processes. Credit: U.S. Army photo by David McNally The U.S. Army Research Laboratory’s Center for Unmanned Aircraft Systems Propulsion made an historic first with its experiment in a gas turbine combustor using X-rays. The data will help advance gas turbine engine designs for higher power density and efficiency, scientists said. “This is the…