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Author: engineering

RunBMC: OCP hardware spec solves data center BMC pain points

Open source is not just for software. The same benefits of rapid innovation and community validation apply to hardware specifications as well. That’s why I’m happy to write that the v1.0 of the RunBMC hardware spec has been contributed to Open Compute Project (OCP). Before I get into what BMCs (baseboard management controllers) are and why modern data centers are dependent on them, let’s zoom out to what companies operating at cloud scale have learned. Cloud software companies like Dropbox…

Antibody binds Fc receptor not only with its Fc trunk but also through its Fab arm — ScienceDaily

“In our immune system, antibodies recognize viruses, bacteria and even cancer cells through their Fab arms, initiating recruitment of leucocytes for the destruction of these invaders. The recruitment is mediated by receptors on the leucocytes which, to date, have been supposed to bind the Fc portion of the antibody and have therefore been termed Fc receptors. This textbook view has been established based on cumulative data obtained primarily using Fab and Fc fragments cleaved from antibody molecules. The collaborative groups…

PCB Assembly Services – Screaming Circuits: PCB DESIGN TIP OF THE DAY: CLEARLY DEFINE YOUR “KEEP OUT” ZONES

Similar to the connector issue, it’s vital that you clearly define any “keep out” zones intended for aspects such as mounting holes or sensitive circuitry. While you are defining those zones, remember that solder mask isn’t considered a reliable insulator, so take care that there is proper distance between copper and any mounting hardware.   The pictures above are a small sample of what our San Diego PCB’s designers did for a customer. It is impossible to show every layer at…

Evaluating Language Adoption At Scale

When adopting a new language at scale, there are many different factors to consider because things can change dramatically. For many, choosing a language can arguably rely on personal preference, but at LinkedIn, we have a Foundation team tasked with evaluating the impact of such fundamental technical decisions. Recently, we underwent the process of evaluating and assessing languages for Android development. From the perspective of the mobile infrastructure team, I would like to share the steps we took in assessing…

Science at Uber: Making a Real-world Impact with Data Science

At Uber, we take advanced research work and use it to solve real world problems. In our  Science at Uber video series, Uber employees talk about how we apply data science, artificial intelligence, machine learning, and other innovative technologies in our daily work. As a graduate student at UC Berkeley, Suzette Puente, Data Science Manager, used statistics to understand and explain animal mobility patterns. At Uber, Suzette and her team apply similar techniques to forecast traffic patterns. By leveraging spatiotemporal…

Redesigning our systems for Off-Facebook Activity

At F8 2018, we shared our plan to build a tool that would allow people to see the apps and websites that choose to share activity with us and to disconnect that activity from their accounts. Today we are beginning to roll out that tool, which is called Off-Facebook Activity. Building Off-Facebook Activity required an extensive redesign of the way our systems store and process this activity and new methods for disconnecting information about a person’s off-site activity from their…

Build and Test Workers Faster with Wrangler CLI 1.2.0

As part of my internship on the Workers Developer Experience team, I set out to polish the Wrangler CLI for Cloudflare Workers. If you’re not familiar with Workers, the premise is quite simple: Write a bit of Javascript that takes in an HTTP request, does some processing, and spits out a response. The magic lies in where your Workers scripts run: on Cloudflare’s edge network, which spans 193 cities in more than 90 countries. Workers can be used for nearly…

Towards an ‘orrery’ for quantum gauge theory — ScienceDaily

The interaction between fields and matter is a recurring theme throughout physics. Classical cases such as the trajectories of one celestial body moving in the gravitational field of others or the motion of an electron in a magnetic field are extremely well understood, and predictions can be made with astonishing accuracy. However, when the quantum character of the particles and fields involved has to be factored in explicitly, then the situation quickly becomes rather complex. And if, in addition, the…

Should Social Media Be Regulated?

Last month, the youngest U. S. Senator, Josh Hawley, a freshman Republican from Missouri, filed a bill called the Social Media Addiction Reduction Technology (SMART) Act.  The purpose of the act is to do something about the harmful effects of addiction to social media. What would the bill do?  I haven’t read it, but according to media reports it would change the ways companies like Facebook, Twitter, and Google deal with their customers.  The open secret of social media is…

Shedding light on how the human eye perceives brightness — ScienceDaily

Japanese scientists are shedding new light on the importance of light-sensing cells in the retina that process visual information. The researchers isolated the functions of melanopsin cells and demonstrated their crucial role in the perception of visual environment. This ushers in a new understanding of the biology of the eye and how visual information is processed. The findings could contribute to more effective therapies for complications that relate to the eye. They can also serve as the basis for developing…