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Comment Re: ...not that you should be speeding on public r (Score 1) 167

If you set it to "85th percentile of observed traffic" you are selecting 15% to be targets of fines. Why 15 and not 20, or 10?

States with "reasonable and prudent" rather than "explicit speed limits" do a more logically consistent job here. Reasonable and prudent is what we're really looking for - everyone choose a speed that is safe for the conditions of the road, the vehicle, and the surrounding traffic.

The problem is that it's difficult to fine people for that, because it is partly subjective and different for every driver and weather conditions. It's much easier to set an explicit speed limit and then measure speeds. Explicit speed limits exist for the convenience of the courts, with safety of the road users as a distant secondary objective.

If you want to improve safety, then look into "traffic calming" measures. In particular those that cause drivers to perceive higher risk (and research into conditions where drivers falsely perceive lower risk). Even just drawing the lines narrower on a wide street can have an effect. If you design the road right, drivers will naturally choose the right speed for the environment without any need for a road nanny.

Comment targeted growth-oriented investments yadda yada (Score 2) 7

"Targeted growth-oriented investments aligned with the 6 strategic areas of focus," eh?

How will this help them leverage their core competencies in order to holistically administrate exceptional synergy? Will they still be able to distill their identify through client-centric solutions? And proactively oversee day-to-day operations, services and deliverables with cross-platform innovation?

Just wondering.

Comment I read tons, just not on paper. (Score 2) 73

I don't even know where I could even get a hardcopy version of Moses T. Runnels' two-volume History of Sanbornton, New Hampshire, totaling around 1,700 pages or so and published in 1882. But I frequently consult the PDF version I downloaded from one of the numerous web sites that has it available. Then there's my OverDrive Libby account, which gives me access to the holdings of something like eight library networks covering virtually all of a state, plus a university library or two. I voraciously consume news from a variety of sources, including through aggregators like Slashdot and Fark. Plus various academic journals related to my work and other interests, through one of the aforementioned university libraries.

In short, if I'm not asleep or driving, I'm likely reading something. I just use a lot less shelf space and forests than I used to.

Science

Scientists Found a Way To Cool Quantum Computers Using Noise (sciencedaily.com) 7

Slashdot reader alternative_right writes: Quantum computers need extreme cold to work, but the very systems that keep them cold also create noise that can destroy fragile quantum information. Scientists in Sweden have now flipped that problem on its head by building a tiny quantum refrigerator that actually uses noise to drive cooling instead of fighting it. By carefully steering heat at unimaginably small scales, the device can act as a refrigerator, heat engine, or energy amplifier inside quantum circuits.

Submission + - Young Journalists Drone, Expose Russian Ships Off Dutch-German Coasts (digitaldigging.org)

schwit1 writes: Seven German journalism students, as a continuation of their OSINT course project, tracked the movements of ships with Russian crews off the coasts of the Netherlands and Germany and linked them to swarms of drones appearing over European military airfields and other strategic sites.

The guys not only analyzed thousands of data points, but also used leaked documents, established connections with sources in European agencies, and drove 2,500 km across three countries chasing one of the ships – even launching their own drone to fly over it.

At the end of the article, there’s precise data on the vessels, so you can follow them yourself.

Submission + - Japan renders current conventional submarines obsolete (x.com)

schwit1 writes: With the Taigei class and its lithium-ion batteries, Tokyo already set a new benchmark: up to three weeks submerged without ever raising a snorkel. That, however, was merely the opening act.

Today, Toyota and Panasonic are leading the global race in solid-state batteries, with prototypes arriving in 2027–2028, mass production after 2030, and Japan’s next submarine class will be the first to use them, either in pure battery form or as a hybrid with a small reactor for onboard recharging. This hybrid would be similar to what the Chinese are developing.

The leap is staggering. A 4,000 ton conventional submarine will patrol for 40 to 60 days without surfacing, sprint well above 20 knots for hours on end, and do it all more quietly than many nuclear subs, thanks to being significantly lighter and running solely on battery power.

Solid-state cells weigh roughly one-third as much, generate 40% less heat, and eliminate half the cooling systems. The result is a faster, stealthier hull that can travel thousands of kilometers without ever breaking the surface.

Those hundreds of saved tons translate directly into more powerful electric motors, extra torpedoes and missiles, cutting-edge sensors, or greater crew comfort. The same hull now carries twice the energy or twice the weapons.

It appears there are also plans to equip the system with Mitsubishi Heavy Industries’ micro nuclear reactor. Its design has no moving parts, which gives it excellent quietness. It’s essentially like a battery that can run for 20 years.

Comment I'm an astronomer who studied supernovae ... (Score 4, Interesting) 30

... and can say that the question, "how does the luminosity of type Ia supernovae depend on redshift?" is a very, very complex one. The number of factors which come into play is large (metallicity, age of the binary system, extinction in the local environment, extinction in the intergalactic environment, corrections for photometric calibration as a function of redshift, etc.), and it's easy to fall into the trap of finding one correlation that seems to explain everything.

I'll add that it's particularly easy, in my opinion, for theorists to fall into this trap.

Submission + - Iran's Capital Is Moving. The Reason Is an Ecological Catastrophe (scientificamerican.com)

An anonymous reader writes: Amid a deepening ecological crisis and acute water shortage, Tehran can no longer remain the capital of Iran, the country’s president has said. The situation in Tehran is the result of "a perfect storm of climate change and corruption,” says Michael Rubin, a political analyst at the American Enterprise Institute. “We no longer have a choice,” said Iranian president Masoud Pezeshkian during a speech on Thursday. Instead Iranian officials are considering moving the capital to the country’s southern coast. But experts say the proposal does not change the reality for the nearly 10 million people who live in Tehran and are now suffering the consequences of a decades-long decline in water supply.

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