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Category: transportation – Page 245

Many of these systems are kept out of equilibrium because individual constituents have their own power source — ATP for cells, gas for cars. But all these extra energy sources and mismatched reactions make for a complex dynamical system beyond the reach of statistical mechanics. How can we analyze phases in such ever-changing systems?

Vitelli and his colleagues see an answer in mathematical objects called exceptional points. Generally, an exceptional point in a system is a singularity, a spot where two or more characteristic properties become indistinguishable and mathematically collapse into one. At an exceptional point, the mathematical behavior of a system differs dramatically from its behavior at nearby points, and exceptional points often describe curious phenomena in systems — like lasers — in which energy is gained and lost continuously.

Now the team has found that these exceptional points also control phase transitions in nonreciprocal systems. Exceptional points aren’t new; physicists and mathematicians have studied them for decades in a variety of settings. But they’ve never been associated so generally with this type of phase transition. “That’s what no one has thought about before, using these in the context of nonequilibrium systems,” said the physicist Cynthia Reichhardt of Los Alamos National Laboratory in New Mexico. “So you can bring all the machinery that we already have about exceptional points to study these systems.”

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It’s the first flying car firm to be granted a safety certificate in Japan.

SkyDrive, the Tokyo-based startup developing a personal eVTOL aircraft, revealed its ultra-light compact flying car, the SD-03, on the show floor at the Consumer Electronics Show (CES) this week.

That makes it the first time the company has showcased its technology outside of Japan, a symbol of the global ambitions of the firm, which aims to kickstart a flying taxi service by 2025.

A flying car built for ‘door-to-door’ transportation

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An evolution of its 2018 ‘Valkyrie’ hypersonic airliner concept.

If you work out of an office, you know that the coffee machine is the favorite spot in the office to hang out or have conversations at. From giving us the first cup of the day to keeping us awake for late-night meetings, that machine is a lifesaver. But just for a day, try not getting your coffee from the coffee machine. Don’t skip coffee entirely, but instead, go out to your local coffee shop that doesn’t use coffee machines or make yourself a flask at home. You will realize that hand-made coffee is inherently better than the one that is made from a machine. Not just making coffee, but highly creative jobs–like designing an outfit or writing a book–are considered best left to human creators. Many do not think that machines could emulate them. But with the takeover of artificial intelligence, this belief is steadily being challenged. Creativity and AI are together transforming many spaces that were traditionally reserved for the “artists.” In this article, we’ll be exploring these spaces and how AI is making a significant impact on them.

Creativity and AI Are Literally Changing the World When you think “creative,” the first things that come to mind are music, poetry and novels. The best works in these three areas of art have been the results of human imagination and innovation. Every significant progress in these fields has challenged traditional ways of creating art and presented a new side to human creativity. For example, there was a time when classical music was considered to be the peak of musical art, but today, we see hip-hop and K-pop taking over the world, their styles and structures very different from classical music.

Full Story:

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Lakeview Generating Station was once a coal plant in Mississauga, a suburb of Toronto. But now, developers are reimagining it to become a mixed-use, lakefront village, where residents can walk or bike anywhere within the site in just 15 minutes.

Lakeview Village, as the new development will be named, will reclaim access and views of the lake, both of which the former coal plant had restricted for locals. As reported by Fast Company, the government shut down the plant in 2005, and initially planned to replace it with a gas-fired power plant. But the community protested this idea, instead pushing for the site to become something meaningful for the residents.

“There were a lot of grassroots community efforts that really resisted and had a more ambitious vision for what the waterfront could be here, toward a mixed-use, sustainable waterfront community,” Brian Sutherland, vice president of development at Argo Development Corporation, told Fast Company. Argo is leading the redevelopment project.

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Horizon Aeronautics is prototyping an eVTOL hovercycle concept that uses a complex and interesting split-swashplate “Blainjett” variable pitch rotor system that only exposes half of each fan. Very odd, but Horizon says it’s highly efficient.

To understand how this Blainjett propulsion system works – and before anyone asks, no, these guys are no relation to me – you first need to understand how the swashplate and cyclic controls work to distribute thrust as a helicopter’s top rotor spins. Each blade can vary its pitch independently, with the height of the swashplate determining the pitch. With the swashplate sitting flat, pushing the whole thing up and down will change the pitch of all the blades at once.

But with the cyclic control, helicopter pilots are able to tilt the swashplate. Pushing the stick forward, for example, tilts it such that the blades gradually tilt as they spin around, getting flatter as they pass the front of the aircraft, then pitching up to develop more lift as they go around the back. The result is an asymmetry in lift, with more at the back of the disc, and the aircraft pitches forward and accelerates in that direction. The cyclic control can do this in any direction; it’s part of what makes helicopters such dynamic aircraft.

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One of the best thing about electric and hybrid vehicles is that the energy doesn’t get completely wasted when you need to brake. By using an electric motor as a generator, you can slow a vehicle down and put some of that kinetic energy into a battery pack so you can use it again later. Sure, there are conversion losses both going into the battery and coming back out to the wheels, so you don’t get a lot more than half of the energy back, but an ICE vehicle turns all of that energy into heat, which gets dissipated into the air.

Electric bikes, scooters, and other micromobility options can do regenerative braking, too. This is great for getting better range and doing fewer brake jobs, just like in a car.

But can this be done without batteries and electric motors? Can you store energy away for later use? It turns out that you can, and this guy built a bicycle that does it.

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