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Comment GSA and NTIA (Score 1) 117

The GSA should be held accountable for the solarwinds123 fiasco. They have sat on their hands for years spending billions (trillions?) and not really taking their supply chain seriously. Also worthy of mention is the NTIA's Software Transparency initiative:
  https://www.ntia.doc.gov/Softw...

Comment take a look at the RSA trade show floor map (Score 1) 62

You can get a pdf of the south expo floor plan here:
https://www.rsaconference.com/...

Exabeam booth was #555

So the adjacent booths may be part of the RSA coronavirus cluster:
Unisys, Thycotic, KnowBe4, Signal Sciences, Siemplify, were all within about 15 to 25 feet of the Exabeam booth.

Knowing whether the infection spread from that both is now just a waiting game.

Comment Re:Better absolute performance with WAAS? (Score 1) 63

I believe they're doing that already (A-GPS) and that's used by cellphones (sometimes triangulation of towers works crudely when GPS doesn't). But that's an augmentation system not unlike WAAS, and what the anonymous expert above explained is very different (A-GPS can't deal with signal reflections off objects, and that's logical).

Comment Better absolute performance with WAAS? (Score 1) 63

Such a demo makes sense because you compare the performance against a control (without the software fix). Real-life improvement and absolute performance are simply a different, farther-reaching question.

The other important thing to note here is how well this could perform in combination with the wide-area augmentation system (WAAS), which corrects for atmospheric variation of signal travel time by using information the is generated by ground stations and broadcast by the satellites. WAAS isn't included in standard cheap GPS receivers, but can be had for little money, starting from $100 GPS receivers (and mandatory for certain aviation applications, for example).

Or the 2cm figure already include the use of WAAS?

Comment Actually, not a single interesting answer (Score 4, Insightful) 592

Sorry, but I couldn't find interesting answers in that Reddit thread. It's mostly that people choose to run OSX over Linux, and why.

The few GNU/Linux users do it for idealistic reasons, or because they're developers, or because they like the latest OS on very old cheap hardware and don't mind to deal with whatever this entails.

The more interesting question is really if freedom exists when you never make use of it. (Do you actually hack the kernel or fix somebody's proprietary binary-only drivers as a GNU/Linux user?)

Comment Relative speeds and training (Score 1) 525

I've driven thousands of kilometers on the German Autobahn. The safety issue is not so much the speed relative to the ground, but the speed relative to other drivers. If you're going 170kph in the left lane in your BMW, and grandma in her 1990 Volkswagen swerves left to overtake a truck, you've got pretty limited distance to slow down (at high speed). German autobahns are sensibly limited to 130kph in urban areas, for windy stretches of road, or two-lane portions.

French interstates work quite well in that respect. Everyone does about 130kph (that's 81mph), and this speed limit is strictly enforced. Relaxed driving, really.

The other thing to take into account is driver training. The kind of tail-gating I'm seeing here in the states rarely happens in Germany. Yes, you get the angry BMW driver flashing his lights at you when you're in "his" lane (road rage is universal), but that's typically over in a few seconds. Drivers wisely keep their distance.

Math

Riecoin Breaks World Record For Largest Prime Sextuplet, Twice 51

An anonymous reader writes Last week, Riecoin – a project that doubles as decentralized virtual currency and a distributed computing system — quietly broke the record for the largest prime number sextuplet. This happened on November 17, 2014 at 19:50 GMT and the calculation took only 70 minutes using the massive distributed computing power of its network. This week the feat was outdone and the project beat its own record on November 24, 2014 at 20:28 GMT achieving numbers 654 digits long, 21 more than its previous record.

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