Viewing profile — matthiasl
matthiasl
HN member- Joined
- Wed, Apr 29, 2009, 11:33 AM UTC
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About matthiasl
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Recent public activity
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Comment #47375056
"What is the mechanism that increases risk for MOV-sourced fires in this arrangement?" I wondered the same thing, and failed to find a satisfying explanation. I can find plenty of …
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Comment #47219479
It took me a while to realise that you were responding to the article, not a comment here. You're right in correcting the article, but I'd like to add that for probably around a de…
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Comment #45757786
Right, it's TX-only. The article says so explicitly halfway through: "As before, this is a transmit-only proof of concept" I didn't notice that on my first reading.
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Comment #45106800
> All the designs I know of have a pumped (active) cooling loop for the reactor, then a secondary loop where the coolant (typically water) evaporates and drives a turbine, [...] Yo…
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Comment #42634923
Assuming you're refering to Hövding, the recall was overturned on appeal, back in 2023, but the company went bankrupt anyway: https://discerningcyclist.com/hovding-bankruptcy/ In s…
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Comment #42494081
I looked at a London telephone book from 1979, when I think the record was released. Most of the phone numbers were something like 01 361 1234, i.e. seven digits after the 01 area …
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Comment #42493079
(Author here) No contradiction. I think what happened is 1. The recording engineer dialled the operator. Could have been pulse dialling, could have been DTMF, doesn't matter. 2. Op…
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Comment #42489984
659 8890 That one's just ordinary DTMF. I recorded the audio, trimmed it manually and then made a spectrogram like this: sox gun1.wav -n rate 4k spectrogram -m -y 500 The 'rate' sw…
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Comment #42488611
You're right; I think CCITT5 is just another name for SS5, because different groups were writing standards. Bell called it one thing, CCITT (an international standards group) calle…
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Comment #42487779
The discussion is new to me. I started analysing the audio because someone sent me a link to the film (The Wall) on youtube and asked me about the signalling. Once I'd decoded the …
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Comment #42486488
Interesting. Normally, films use deliberately fictious numbers, e.g. in the US it's always xxx555xxxxxx. Wikipedia says the UK uses various area codes for the same thing, including…
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Comment #42485923
Author here. Yep, 44 is the UK country code. The problem I got stuck on is that the rest of the number, 1831, didn't make sense. I assumed the number was complete, since it had the…
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Comment #38316667
There's no smoke coming out. Best guess: you're confused by the word "smokestack". Smokestack is a synonym for chimney. The power station is closed. The chimneys are still there, b…
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Comment #36819290
ATM cells have 48 byte payloads. Supposedly that was because different groups involved in the standardisation process wanted either 32 or 64 byte payloads.
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Comment #34552814
Not important to the conclusion or reasoning... but Stevena's post says: "the whole team working on Erlang quit and started their own company." The same event as described in "A hi…
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Comment #34412436
To put some numbers on "much worse" versus "not much worse": The best window I can find from the major Danish manufacturer Velfac has a total U-value of 0.82 W/°K/m² [1]. It's a tr…
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Comment #33077618
Schroedingersat> ...albedo increase... You mean _decrease_, right?
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Comment #32749356
> Electric heat pumps actually don't work in very cold weather. I think that statement needs to be qualified and quantified. Qualified: your claim is probably only intended to appl…
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Comment #31629782
Do you have some numbers to back your "strong" doubts? One widely cited source is the 'Lazard' report: https://www.lazard.com/perspective/levelized-cost-of-energy-... it puts onsho…
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Comment #24260796
Rurban wrote: "the very best (Formula 1) at 10 KHz". how much of the above is a typo and how much is real? I'm pretty sure 'KHz' is a typo which maybe should be kHz as in the start…
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Comment #23005763
> you can't just throw around numbers without explaining exactly what they mean or where they come from. In the interview, Gieseke says influenza kills 1000 to 2000 people per year…
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Comment #23005104
That difference seems to arise because the report you cite uses a broad definition of influenza deaths. Page 2 says they're counting patients who "have influenza as a contributing …
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Comment #23004874
I also share your concern about claims made by Gieseke. The article quotes Gieseke as saying "The real death toll, he suggested, will be in the region of a severe influenza season …
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Comment #22896597
"ICU admissions [...] have very little lag." Sweden's ICU admissions number for a particular day usually takes a week or two to settle down. For instance, here's how the numbers we…