Deutsche Telekom (DT) is heavily involved in open source groups such as the Open Networking Foundation (ONF), the Telecom Infra Project and some Linux Foundation open source projects. Yet, when it comes to talking about its internal work to upgrade its own network, DT has been decidedly closed-lipped.
The service provider recently opened up about its network transformation, which it calls Access 4.0. The company said that it is focusing on its fixed-line network for fiber-to-the-home and fiber-to-the-basement. Apparently, the company still has a lot of copper connections in the last mile, and DT didn’t say anything about its plans to lay more fiber. But the 4.0 upgrades will impact access-relevant hardware and broadband network gateway (BNG) functions in central offices.
DT has called out two vendors that are helping it with its Access 4.0 project: RtBrick and Reply. It is working with these vendors in conjunction with open source software from the CORD projects. DT is customizing CORD software for Access 4.0, adapting it for its specific needs.
The basic idea behind CORD is to replace legacy, proprietary equipment at telco central offices with more generic hardware that can run open source software.
That delay in spreading the news about the threats of plastic came with a major cost.
In the time since scientific research on plastic pollution was first published in the early 1970s, billions of metric tons of plastic waste has been tossed in landfills and accumulated in terrestrial and marine ecosystems — and in the bodies of countless people and animals.
That scientists knew plastic pollution was a growing problem back in the Seventies begs two essential questions:
What would the world be like if we had listened to early researchers much earlier?
To analyze the materials, Dr. Arjan Dijkstra and Dr. Colin Wilkins, geologists from the University’s School of Geography, Earth and Environmental Sciences, put a cell phone in a blender and reduced it to dust. They then took the blended phone and mixed it at almost 500°C with a powerful oxidizer, sodium peroxide. They were able to do a detailed analysis of the resulting solution in acid to determine what chemicals were present in the cell phone.
As expected, abundant materials such as iron, aluminum, chromium, and silicon made up the majority of the cell phone construction. For example, the results showed the phone used in the tests contained 33g of iron, 13g of silicon and 7g of chromium, as well as smaller quantities of other abundant substances.
Spider silk is already recognized as one of the strongest materials known to man comparable to its lightweight. Now researchers at MIT have discovered that another quality of the material—its resilient fibers that also have a property that make them well-suited to another potential use as a new robotic actuator or muscle.
A team led by MIT Professor Markus Buehler, head of the Department of Civil and Environmental Engineering, discovered what he called a “new phenomenon” in which the fibers of spider silk shrink in response to changes in moisture, which is called supercontraction. Moreover, the threads not only contract, but also twist at the same time, which provides a strong torsional force, Buehler said in an MIT news release.
Both AT&T and Verizon confirmed that they’re going to migrate traffic from their current 4G LTE networks to their nascent 5G networks by using a technology called “dynamic spectrum sharing.” This technology essentially will allow 4G and 5G users to take turns using the exact same chunk of spectrum. Initially, the line of 4G users will be much longer, so they’ll take most of the turns.
But as the number of 5G users grows, they’ll take an increasing number of turns using a given chunk of spectrum.
The result though will be very spectrally efficient, because no matter who is taking their turn, the spectrum will be working rather than lying fallow.
Mathematicians long wondered whether it’s possible to express the number 33 as the sum of three cubes—that is, whether the equation 33 = x³+ y³+ z³ has a solution. They knew that 29 could be written as 3³ + 1³ + 1³, for instance, whereas 32 is not expressible as the sum of three integers each raised to the third power.
But the case of 33 went unsolved for 64 years.
Now, Andrew Booker, a mathematician at the University of Bristol, has finally cracked it: He discovered that (8,866,128,975,287,528)³ + (–8,778,405,442,862,239)³ + (–2,736,111,468,807,040)³ = 33.
DE-CIX and Datacenter One have formed a partnership, which will see Datacenter One offer DE-CIX services at its sites in Leverkusen, Dusseldorf and Stuttgart.
The collaboration, which comes into effect immediately, begins with Datacenter One’s facility LEV1 in Leverkusen connected to DE-CIX, and will remain in place for the foreseeable future. Further DE-CIX sites will be created in the next few years because of the partnership.
The collaboration between the two has been designed to meet the strong demand for fast and low-cost interconnection services in additional German regions. DE-CIX is also present elsewhere in Germany with offices in Hamburg, Munich, Dusseldorf, and Berlin.