Thermoacoustics.

https://doi.org/10.1016/j.enbenv.2023.06.006

American dialects often omit the “out” for the same meaning.

I’m just tempering the headline, not throwing doubt at the research and development possibilities.

I got excited about the headline, thinking they’d experimentally achieved ore-melting temperatures with a heat pump (“Ultra-hot heatpump breakthrough paves the way […]”).

I guess I perceive 270°C as below the threshold of “ultra hot”.

Later in the article it’s revealed that the breakthrough experiment is paving the way to the (as yet unrealised) ultra-hot (“Luo summarised various research fronts […] promising pathways towards the realisation of ultra-high-temperature heat pumps.”)

Still – 270°C! Commercial/domestic baking ovens when?

Probably yet another overblown headline.

Does anyone have access to the full text of the paper?

https://doi.org/10.1126/science.adv7434

Abstract

Large-scale generative artificial intelligence (AI) is facing a severe computing power shortage. Although photonic computing achieves excellence in decision tasks, its application in generative tasks remains formidable because of limited integration scale, time-consuming dimension conversions, and ground-truth-dependent training algorithms. We produced an all-optical chip for large-scale intelligent vision generation, named LightGen. By integrating millions of photonic neurons on a chip, varying network dimension through proposed optical latent space, and Bayes-based training algorithms, LightGen experimentally implemented high-resolution semantic image generation, denoising, style transfer, three-dimensional generation, and manipulation. Its measured end-to-end computing speed and energy efficiency were each more than two orders of magnitude greater than those of state-of-the-art electronic chips, paving the way for acceleration of large visual generative models.

For over a century, the dream of efficiently concentrating low-grade heat into high-temperature industrial energy has been constrained by a stubborn ceiling: 200 degrees Celsius (392 degrees Fahrenheit).
Now, a team from China has shattered that temperature limit. Using a revolutionary heat pump with no moving parts, they achieved an output of 270 degrees with a 145-degree heat source to drive the cycle.

…so a modest but significant improvement has been achieved, but nowhere near the temps required for melting ore.

But maaaaybe, theoretically, with materials and technologies not yet developed, possibly by 2040:

In a December 5 article in Nature Energy, Luo summarised various research fronts, including his team’s thermoacoustic Stirling heat pump, as promising pathways towards the realisation of ultra-high-temperature heat pumps.
He also suggested development directions for materials and technologies needed for future ultra-high-temperature heat pumps operating from 600K to 1,600K, or 327 degrees to 1,327 degrees, saying these could be achieved by 2040.

• Unexpected Keyboard - also has a vertical cursor slide key.
• Thumb-Key - optional setting. Also works intuitively for text deletion on backspace. Text selection too but that’s buggy.

Huh. Popular name:

• https://github.com/dropbox/lepton
• https://github.com/microsoft/lepton_jpeg_rust
• https://github.com/lepton-eda/lepton-eda
• https://hackjutsu.com/Lepton/
• http://www.leptonica.org/
• https://github.com/BinaryResearch/lepton
• https://github.com/lpotthast/leptonic
• https://github.com/leptonai/leptonai

you’d have to design your own charger and battery management modules

Just searched for “Sodium-ion BMS” on Aliexpress:

https://join-lemmy.org/docs/contributors/07-ranking-algo.html#lemmy

Rank = ScaleFactor * log(Max(1, 3 + Score)) / (Time + 2)^Gravity

Active uses the post votes, and latest comment time (limited to two days).

Archive link without paywall: https://archive.md/TY4oT

It’s not a headline; I’m posing the question, written in this post title. (Perhaps I should have included the video link in the body rather than url field.)

Fuck bucatini (unless it’s a baked pasta dish). The rest of the dish’s attributes are subjective.

Trollies are usually plastic-coated. If you’re gonna do this please burn it off first with a nice hot fire, then scrub off all the plastic residue before cooking food on it.

If it’s tin- or zinc-plated you run the risk of metal fume fever if you breathe the fumes, but once-off it’s probably not much of a hazard. Unless it’s cadmium plated (peculiar yellowish hue), in which case the fumes and residue are quite hazardous.

It’s also worth bringing a spanner to remove the castors – they’re usually decent quality and can be used for better purposes than a shopping trolley.

Not sure if any of this advice transfers with the programming analogy.

Conversations is excellent for XMPP, but only available on android.

For iOS/MacOS Monal, for iOS Siskin, for Linux/Windows Gajim.

Ugh, so much AI generated slop starting to fill up Bandcamp. Enshittification launch countdown is almost complete, I fear…

There’s excellent music on there and if you buy stuff from a trusted artist it’s a good deal for them, but as a discovery platform it’s becoming a dead-internet failure.

• Discourse
• Zulip

Open Food Network is worth a look.

Their repository is available.

Anyone can now provide that service. Why pay OpenAI when you can pay a different service who is cheaper or provides a service more aligned with your needs or ethics or legal requirements?

Really interesting proposal! To a degree the structure of Lemmy/Mbin/etc may be quite close to the categorising and moderating aspect, and might be a good place to start collecting URLs to crawl.

Each community could be considered analogous to a (rather chaotic) webring. When an instance doesn’t meet your moderation expectation, defederate; if a MengZi user wants to see search results from different defederated segments, use a MengZi instance that federates with both, or just have both plugged into a searx instance.

The categorising side of MengZi could be (from an activitypub perspective) like a very cut down version of lemmy –each webring/category being a community, each website being a post, comments disabled or limited/filtered to hashtags.

A webring could be a specific sort of category/community, where a submitted website’s url’s page must contain specific metadata definining its membership in that ring or it is automoderated and removed. Such a category could automoderate the url and title to be the default page defined by its membership metadata. Existing webring html element standards could suffice.

A website could be crossposted to other categories, including to other instances, even to/from lemmy or other compatible activitypub sites. If a (cross)posted post is not a url returning the correct mime type for a category then it can be automoderated and deleted; same for other arbitrary criteria a category could define.

A website/post on MengZi could be accompanied by relevant crawling metadata, even full search database data available via the api for sharing to other MengZi instances to save duplication of crawling effort while distributing the database.