jabl

7 ms·

1.
by jabl 6d ago
I don't see how installing underfloor heating in an existing house can make economic sense. Additionally in older houses the windows tend to be a bit leaky, so the radiators being under the windows is important to prevent unpleasant co
2.
by jabl 6d ago
My father has a wood burning boiler connected to the same water circuit that heats the radiators as his air-water heat pump. Originally when the house was built it was a wood-oil combi boiler, later on the oil burner was ripped out and the
3.
by jabl 6d ago
My father has a Mitsubishi air-water heat pump, generating hot water for the iron radiators in the house. Uses R32 refrigerant, not CO2 as in this article, but still. While efficiency is reduced by the need to have decently high temperature
4.
by jabl 6d ago
I believe there are propane using split AC systems where propane is used only in the outside unit. The outside unit has a heat exchanger transferring the heat to some glycol-water solution which is what then circulates through the inside un
5.
by jabl 6d ago
Per the latest IPCC report, GWP of propane is estimated to be 0.02, previously it was estimated to be around 3.
6.
by jabl 7d ago
If you do positioning in degrees, minutes, and seconds (or decimal minutes which I guess is more common nowadays), a 'natural' length unit for navigation is a minute of longitude, which is the original definition of the nautical m
7.
by jabl 21d ago
IIRC Calutron's were basically abandoned because they were massively inefficient compared to gaseous diffusion and, particularly, centrifuges. What has changed here to make them competitive again? Or are they counting on selling small
8.
by jabl 28d ago
A number of years ago I implemented xoshiro256** for the GFortran compiler. Previously it used Marsaglia's KISS generator, which wasn't bad but perhaps no longer state of the art on the TESTU1 etc. tests. Additionally, xoshiro256*
9.
by jabl 29d ago
What's so uniquely bad about the tube in London? Poor ventilation and brake dust?
10.
by jabl 29d ago
Absolutely. It's annoying though that EV's need that extra Darth Vader on wheels sound to warn pedestrians, I'd prefer them to be as quiet as possible.
11.
by jabl 1mo ago
Yes, but compared to RISC-V neither OpenSPARC nor OpenPOWER are really going anywhere. Not really sure why, maybe the lawyers read the fine print about the level of openness they actually provide and decide that nope, not gonna touch that o
12.
by jabl 1mo ago
We read some passages from Decameron back in high school. Lovely book really, I should take the time to really read it cover to cover.
13.
by jabl 1mo ago
I suppose, hypothetically, you could gather up the excess fuel in the forests and burn it in a power plant. Probably impractical at scale though..
14.
by jabl 1mo ago
Given how European car companies, German in particular, are sticking their heads in the sand and lobbying the commission to delay the EV transition, I suspect the end game will be that the manufacturers will be bought by the Chinese car com
15.
by jabl 2mo ago
Apparently there is a plan for interoperability between vipps and wero. https://epicompany.eu/media-insights/bancomat-bizum-epi-sibs...
16.
by jabl 2mo ago
This is about replacing a turboprop with a slightly smaller turboprop and electric motor/generator+battery. The turboprop burns Jet-A, not leaded aviation gasoline.
17.
by jabl 2mo ago
But if it does, we'll make sure the plane crashes outside the environment.
18.
by jabl 2mo ago
Operation from aircraft carriers, obviously. /s
19.
by jabl 2mo ago
So we should ignore the Mirai sales numbers and conclude, uh, what, that the entire $40B investment is wasted and hasn't produced anything of value? Or if we want to be charitable, surely the $40B has resulted in some advancement of th
20.
by jabl 3mo ago
Um, Europe had pretty ubiquitous copper phone wiring long before cellular became a thing. Many developing countries, however, were able to leapfrog the wired phones stage.
21.
by jabl 3mo ago
Some engines, nowadays mostly large marine diesels, are reversible. Change the valve timing, and start it in the opposite direction, and off it goes.
22.
by jabl 3mo ago
I work in HPC and at some point we had a dozen or so racks with blade systems in our cluster. IIRC it was HP c7000 blade enclosures, 16 nodes in a 10U chassis. We had 4 such chassis in each rack. So reasonably dense, and there was a bit les
23.
by jabl 3mo ago
Here in Northern Europe there seems to be something of a renaissance of traditional linseed oil paints, both because of people being more environmentally conscious and wanting to avoid VOC's and microplastics, but also because there&#x
24.
by jabl 3mo ago
Yes. Why the heck do LLM's produce prose like this? It's de facto standard in the narration for all these slop videos drowning YouTube. No human writes like this, so what is the training material that has taught LLM's that th
25.
by jabl 3mo ago
E.g. on this link you can see a picture of how the yards on a square rigger would be set for each wind direction. https://www.facebook.com/groups/patrickobrianappreciationsoc... At no point should you (nor would it be
26.
by jabl 3mo ago
Rust and Ada are about equally safe, both have advantages and disadvantages. Perhaps you're thinking about SPARK ADA, but that's a different kettle of fish. It's a bit like saying you should program in C, because formal verif
27.
by jabl 4mo ago
But thanks to the magic of the Interwebs, most of those jobs don't have to be in the city, region, or even the same country as the one where the DC is located. So for a local politician, most of those jobs won't get them reelected
28.
by jabl 4mo ago
If the owner of the stack (Logio or whatever it was called, see upthread) doesn't understand it, the consultants will run wild and soon it will require a hectare-sized datacenter running a zillion containers, and another DC for HA of c
29.
by jabl 4mo ago
Which in turn relies on a stack largely written in, shock and horror, C, such as the Linux kernel, libc, openssl, nginx, etc. etc. Even if you believe language X to be the bees knees, are you going to stop using it until everything below it
30.
by jabl 4mo ago
Good news for FOSS FPGA toolchains, I suppose. Eg https://f4pga.org/ for some kind of umbrella project.

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