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Engineering News

Deploys at Slack – Several People Are Coding

By Michael Deng and Jonathan Chang Deploys require a careful balance of speed and reliability. At Slack, we value quick iteration, fast feedback loops, and responsiveness to customer feedback. We also have hundreds of engineers who are trying to be as productive as possible. Keeping to these values while growing as a company means continual refinement of our deployment system. We had to invest in greater visibility and reliability in order to accommodate the amount of work being done. This…

Migrating from VPN to Access

With so many people at Cloudflare now working remotely, it’s worth stepping back and looking at the systems we use to get work done and how we protect them. Over the years we’ve migrated from a traditional “put it behind the VPN!” company to a modern zero-trust architecture. Cloudflare hasn’t completed its journey yet, but we’re pretty darn close. Our general strategy: protect every internal app we can with Access (our zero-trust access proxy), and simultaneously beef up our VPN’s…

How Cloudflare Built our Cloud VPN Replacement

It’s never been more crucial to help remote workforces stay fully operational — for the sake of countless individuals, businesses, and the economy at large. In light of this, Cloudflare recently launched a program that offers our Cloudflare for Teams suite for free to any company, of any size, through September 1. Some of these firms have been curious about how Cloudflare itself uses these tools. Here’s how Cloudflare’s next-generation VPN alternative, Cloudflare Access, came to be. Rewind to 2015.…

A new way to study HIV’s impact on the brain — ScienceDaily

Though many negative repercussions of human immunodeficiency virus infection can be mitigated with the use of antiretroviral therapy (ART), one area where medical advances haven’t made as much progress is in the reduction of cognitive impacts. Half of HIV patients have HIV-associated neurocognitive disorders (HAND), which can manifest in a variety of ways, from forgetfulness and confusion to behavior changes and motor deficiencies. To better understand the mechanisms underlying HAND, researchers from Penn’s School of Dental Medicine and Perelman School…

Near-Infrared Sensor Technology Shines in Low/No-Light Conditions

In the second generation of its near-infrared (NIR) technology for image sensors that operate in low to no ambient light conditions, OmniVision Technologies offers silicon semiconductor architectures and processes that have hit new heights in quantum efficiency. The Nyxel 2 technology provides a 25% improvement over the preceding generation in the invisible 940-nm NIR light spectrum and a 17% bump at the barely visible 850-nm NIR wavelength. These sensitivity improvements enable image sensors to see even better and farther under…

Double-walled nanotubes have electro-optical advantages — ScienceDaily

One nanotube could be great for electronics applications, but there’s new evidence that two could be tops. Rice University engineers already knew that size matters when using single-walled carbon nanotubes for their electrical properties. But until now, nobody had studied how electrons act when confronted with the Russian doll-like structure of multiwalled tubes. The Rice lab of materials theorist Boris Yakobson has now calculated the impact of curvature of semiconducting double-wall carbon nanotubes on their flexoelectric voltage, a measure of…

Building a Modulated System | Machine Design

When considering the building blocks of your plant, imagine actual building blocks. “The principle of modularity is best explained by Lego building blocks,” said Jakob Dück, global industry segment manager for Harting, in a recent company article. “Innumerable objects can be created from a few basic bricks and defined connecting elements.” Imagining building blocks has also been applied to individual products and systems to create variability. As an example, Dück explained the platform strategy for the automotive industry in which…

On-Call Reliability from Electric Test Device

The widespread introduction of affordable, energy-efficient electrified vehicles (including electric and hybrid cars) is essential for meeting ambitious government CO2 emissions targets. And, ultimately, it will create a pathway to a transportation system not based on carbon fuels. The maximum driving range of an electric vehicle is determined by the amount of energy that’s contained in the individual lithium-ion battery cells of the car’s battery pack. These cells are connected in series and parallel arrangements to provide the high currents and high voltage needed to power the electric engine.  While the energy density of the Li-ion battery cell has more than…

DSP Architecture Targets 5G Endpoints and Radio Access Networks

This article appeared in Microwaves & RF and has been published here with permission. CEVA’s new Gen4 CEVA-XC DSP architecture unifies the principles of scalar and vector processing in a powerful architecture, enabling two-times 8-way VLIW and up to 14,000 bits of data-level parallelism. It incorporates an advanced, deep pipeline architecture enabling operating speeds of 1.8 GHz at a 7-nm process node using a unique physical design architecture for a fully synthesizable design flow, and an innovative multithreading design. This…

Using Cloudflare to secure your cardholder data environment

As part of our ongoing compliance efforts Cloudflare’s PCI scope is periodically reviewed (including after any significant changes) to ensure all in-scope systems are operating in accordance with the PCI DSS. This review also allows us to periodically review each product we offer as a PCI validated service provider and identify where there might be opportunities to provide greater value to our customers. Building trust in our products is one critical component that allows Cloudflare’s mission of “Helping to build…