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Comment Re:Useful for targeted tasks (Score 1) 248

by GlobalEcho (#65484752) Attached to: Ask Slashdot: Do You Use AI - and Is It Actually Helpful?

I've used AI for two tasks where I found it very useful, and some very minor ones as well.

1) I had to write some code to invert a matrix in C. I knew the code was out there, but Google's search is so polluted today I could not find it. ChatGPT immediately returned working code. I noticed it did not calculate the determinant, so I asked it for that, and it modified the code to do so. As I say, I know that code is out there somewhere in a book, probably a dozen books, but I can no longer find older topics because the search engines are so polluted today. So yeah, this was extremely useful.

Just a note, from someone who has done a lot of computational numerical analysis...if you are inverting a matrix, you are usually doing something inefficient and numerically unstable. In small dimension counts, that could be fine, but keep it in mind.

Comment Re:Sorry I just woke up⦠(Score 3, Interesting) 10

Doesn't ANYBODY but me remember that "Napster" was actually RealNetworks? You know, the old Real.com that was the Internet's first scale, commercial streamer? Real became Rhapsody for several years. Rhapsody had no name recognition, so they bought the Napster name from it's owners... BEST BUY.

It gets weirder. Rhapsody had been Sonos' partner streaming service - and Rhapsody is also... I HEART RADIO. Now the whole Napster lot got dumped in the lap of venture capital vultures.

Comment Re:Great. (Score 1) 46

by Theaetetus (#65438869) Attached to: Apple Finally Brings Mac-like Windowing and Menu Bar To iPad
No, that's a bad idea. A menu bar at the top of the screen is a much bigger target to hit, and easy to find by muscle memory. The file menu is always in the same place, regardless of what app you're using, and the buttons extend infinitely up above the screen. By contrast, a menu bar tied to the window moves around whenever the window moves, so you always have to visually find it again, and target size is just the size of the button and ends at the top of the window.

Comment Re:Corporate Cards (Score 1) 54

Most airline reservation systems require a saved booking (PNR = Passenger Name Record) before they can issue a ticket. So, the booking class and seats are locked in before you can make a payment. Once that's done, they can't really change the price, and you can pick which card you use. So, I would suspect that they aren't trying to identify a corporate card as part of their segmentation strategy.
Science

Researchers Build 'The World's Fastest Petahertz Quantum Transistor'. They Predict Lightwave Electronics (arizona.edu) 18

Posted by EditorDavid from the got-a-light dept.
"What if ultrafast pulses of light could operate computers at speeds a million times faster than today's best processors?" asks the University of Arizona.

"A team of scientists, including researchers from the University of Arizona, are working to make that possible." In a groundbreaking international effort, researchers from the Department of Physics in the College of Science and the James C. Wyant College of Optical Sciences demonstrated a way to manipulate electrons in graphene using pulses of light that last less than a trillionth of a second. By leveraging a quantum effect known as tunneling, they recorded electrons bypassing a physical barrier almost instantaneously, a feat that redefines the potential limits of computer processing power. A study published in Nature Communications highlights how the technique could lead to processing speeds in the petahertz range — over 1,000 times faster than modern computer chips. Sending data at those speeds would revolutionize computing as we know it, said Mohammed Hassan, an associate professor of physics and optical sciences. Hassan has long pursued light-based computer technology and previously led efforts to develop the world's fastest electron microscope...

[T]he researchers used a laser that switches off and on at a rate of 638 attoseconds to create what Hassan called "the world's fastest petahertz quantum transistor... For reference, a single attosecond is one-quintillionth of a second," Hassan said. "That means that this achievement represents a big leap forward in the development of ultrafast computer technologies by realizing a petahertz-speed transistor." While some scientific advancements occur under strict conditions, including temperature and pressure, this new transistor performed in ambient conditions — opening the way to commercialization and use in everyday electronics. Hassan is working with Tech Launch Arizona, the office that works with investigators to commercialize inventions stemming from U of A research in order to patent and market innovations.

While the original invention used a specialized laser, the researchers are furthering development of a transistor compatible with commercially available equipment. "I hope we can collaborate with industry partners to realize this petahertz-speed transistor on a microchip," Hassan said.
Thanks to long-time Slashdot reader goslackware for sharing the news.

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