skysight-inc/HackerNews huggingface dataset:
Your refrigerator is a heat pump. If you put something warm in there its heat is drawn out to the environment heating your kitchen. A refrigerant is used to achieve this. When it’s pressure is reduced it will evaporate absorbing thermal energy from its surroundings to change phase. When pumped around it’s circuit and compressed and accordingly condenses releasing all that energy to its surroundings. The electrical energy required pumps the fluid and drives the compressor. Of course there will be some heating due to heating of the mechanical components.

A lot of homes here in Ireland (and I presume elsewhere in Europe) must be built to an ‘A level’ build energy rating. This typically means installing PV Solar or heat pumps. Rarely both.

My modest solar installation on my three year old house only provides about 40% of my electricity needs (typical daily import is 8 kWh and generation is 5 kWh). Winter is a different story.

Most heat pumps here are air to water systems. Homes don’t require AC here but you can get air to air systems that can heat or cool your home as needed. The benefit of a heat pump is it’s coefficient of performance (CoP). This is the amount of thermal energy you get out for electrical energy put in. A typical system can sustain a CoP of between 3 and 4. However this drops off as the outside temperature drops and you push up the heating demanded.

They should be as reliable and performant as your fridge or AC unit. So you many need to replace the pump or refill the refrigerant.

Another interesting technology is a so called solid state heat pump or thermoelectric module. These have an awful CoP usually much less than unity. They are interesting for thermal management due to their size however. You can aggressively cook a small high-flux component and then deal with the thermal load form the hot side of the TEC with a big cooler. You can even stack them. Their efficiency increases as the temperature difference goes to zero so a stack with a small
temperature jump between layers can be better. They also work in reverse and can therefore be used to scavenge electrical power when you have hot and cold reservoirs. For example put one on the exhaust of your car and you can harvest enough energy to charge your phone.
I have made a successful offer on a house. When I had initially walked through with realtor, I looked at the furnace and thought something was amiss. Then during inspection, the inspector told me that it was a heat pump, and it's only about two years old. My first reaction was "on no - electric heat". But later I Googled and found a page that has a cost calculator.

https://www.columbiagaspa.com/services/add-or-convert-to-gas...

It looks like it will be ~20% less to have a heat pump. Also natural gas prices are forecast to continue up and make the heat pump even more cost effective.

I still do wish there was gas service to the house. But I doubt that I want it enough to pay for the installation.
DDoS-Guard and VanwaTech are both tiny companies and represent less than 1% of the market. There are hundreds of providers that offer decent DDoS protection.

DDoS-Guard and VanwaTech are just specialist providers that offer hosting to websites that very few companies would willing to work with.

It's not an oligopoly either.
How does one reconcile the idea that KiwiFarms is guilty of unspecified crimes that threaten lives and require emergency intervention, but also those alleged crimes aren't urgent enough that authorities would prosecute them? Is that entirely handwaved by calling the whole of U.S. law enforcement "transphobic / homophobic / white supremacist / right-wing"?

As this submission shows, cybercrime is prosecuted in the U.S.
I thought some deductive reasoning and thinking about how things work at the byte level would save me. Computer said no.
What was the editorial purpose for the comment? Why is the sex of the participants of the alleged conversation relevant? The author takes great pains to make the other conversants seem borderline maniacal and also wants to make sure we know that they are all men. Why not also include their heights or hair colors? It's just as relevant in the context of the article.
I genuinely think this guy made this entire article up. No billionaire prepper is going to invite this nutjob to ask him questions about things like, you know, whether or not their security compound needs an HVAC system. Lol.
I consider a highly complex engineering effort identifying a bug before production and preventing an incident before the system has ever been tested end to end a victory. But I’m sure your systems never have production issues.
Past situations are not directly comparable but it seems that, unless actual necessities dry up, people in general weather it moderately well.

When things go horribly wrong (disasters) people pull together. When they go slightly wrong, they pull apart.
>this Keffals person also doesn't come off well. She seems like an unpleasant person

You don't know the half of it:

https://kiwifarms.ru/threads/keffals-clara-sorrenti-lucas-jo...
The Iron Curtain was firmly in place in the 1980s. If you tried crossing the GDR/BRD or the Czechoslovak/(BRD, Austria) border in the 1980s, you would be risking your life and, if caught, you would certainly do some time in prison.

The last person shot on the Berlin wall died in February 1989 [0].

[0] https://en.wikipedia.org/wiki/Chris_Gueffroy
It feels obligatory to reference Technology Connection in a thread about heat pumps. TC is a super fun YouTube channel that digs j to everyday technology and has had a number of episodes on heat pumps and modern thermodynamic management challenges and technologies.

https://youtu.be/7J52mDjZzto
From the diff, perhaps stale but:

> Carbon Emitted (Power consumption x Time x Carbon produced based on location of power grid): 11250 kg CO2 eq.

That's ... Sobering.
How so? Illegal activity and even interacting with people off site is against the rules. They have and do work with police when someone says/does something illegal. This whole issue is and always has been about the things certain people don't like knowing the site allows to be said and nothing more.. please keep up.
Of course you have your bug out team with you at all times, and your helicopter to your jet to your secret volcano lair.

If poorer, each of those is replaced which cheaper alternatives until it’s a ziploc bag with a Glock, a few like-minded friends, and some motorbikes to get you back to the farm.
Enduring a form of rape is empowering if it’s financially lucrative?

Yeah, someone will need to explain that to me - because it just looks like a fundamentally misogynistic view of the ‘use value’ of a woman, and at odds with socialist thought on the value of individuals and the undesirability of them being physically exploited as a consequence of a capitalist market economy.

(And is it even lucrative? Doesn’t it often just support a lifestyle of subsistence drug addiction?)
Step 2: take responsibility for all the content of that GitHub link being free of copyright infingements, patent violations, etc.

And you missed step 0: convince the boss there’s a good reason why your e-commerce storefront needs to have a link to a GitHub page on it.
Sounds like our boy Douglas is having himself some delusions of grandeur.
Perhaps preparing for a post-apocalyptic world that they envision would be better served by improving your skills with a shovel, not a Glock.
My research lead me to exactly the same conclusion. Heat pumps cost the earth if you call them heat pumps, but once you call them an inverter split A/C they magically cost an order of magnitude less (even though it's the exact same tech).
Yes. If vanilla ice cream is twice as cheap as chocolate ice cream, that means you can buy two vanilla for one chocolate. Vanilla is half the price.

Extrapolating, 60 times cheaper means 1/60th -- you could buy 60 books for the same price 1 book cost 50 years ago.
Really? I live in a mostly not very well-insulated 200 year old wood construction farm house and I find that there can easily be a 10 degree F delta between indoors and outdoors. I have heat for the winter given northern climate but otherwise mostly just do regulation by opening or closing windows.
Heat pumps produce several times the heat as electricity put in. Even with a typical 40%-50% efficiency for a gas power plant you end up with more than 100% efficiency with a heat pump. If the power plant rest heat is used for instance for district heating you reach efficiency of around 90%. Add the efficiency of heat pumps on top and you end up with something very good.
What does the internet have to do with free speech? I understand that the internet lets you dramatically amplify speech; but, at least in the US, the "internet" is a regulated private space — not a public space. The companies that own that space can (up to regulatory rules) moderate their spaces any way they choose. If KF wants proper, constitutional free speech they can do so in any of the public spaces they want. Hell, they could rent downtown Santa Fe, Texas — like the KKK did in the early 00's — and have a parade.

EDIT: I can see some people may not like what I'm saying; but I actively help organize real marches in Texas for orgs like NAACP, AAIA, PPC, etc. We have a stable of lawyers (TCRP, SCSJ, ...); and, I can assure you this is how free speech works in reality.
At some level, I think all bullying is the same, but I do think there are some differences in the forms it takes, or the consequences.

This might be controversial, but my personal impressions are that there is more denial about bullying in academic than many nonacademic settings. This is part of the point of the article I think ("breaking the silence" of the title). There's a sense that academics is "above human weaknesses" or something, and there's a certain culture endemic to a lot of entrenched promotion and tenure that denies the existence of these things, or minimizes it. I think this denial leads to certain issues in turn, like more serious consequences for victims. Any field with similar denial would probably be similar.

Probably related to this is that the oversupply of academics and competitiveness in it I think leads to more significant consequences for victims, and coupled with institutional denial (if not cultural denial), I think it leads to fewer ways to rectify it, with fewer consequences for aggressors.

I think the nature of tenure leads to extreme forms of it. You can't fire at will someone you dislike or want to target, if you're a bully, so you resort to extreme falsehoods and slander basically to get them to leave. Basically (putting aside reasons for leaving like not wanting to do academics anymore, or wanting a change of career, or family issues, etc.), if it takes someone doing something really bad to leave a tenured position, they either have to be doing something really bad, you have to make it look like they're doing something really bad, or you have to make it so bad for them they end up doing something bad. This leads to weird situations where in another field you might just axe an area, but in academics if the political whims shift, you might have the people in power mudslinging about colleagues just because they're not interested in research area X and want to make the entire department look like themselves.
Heat pumps transfer heat from the outside, they aren’t generating it so it’s entirely likely that they would result in fewer net emissions than burning coal directly. And the calculus just keeps getting better for grids that incorporate more natural gas and renewables.
See also https://news.ycombinator.com/item?id=32690954 from yesterday
A lot of this really resonates with me as a manager of dev teams, but once again the very unhelpful advice for "how do you figure out when you'll be done?" is "refuse to do it". If an executive is asking me when we will deliver something this is a completely valid question. It's how everyone outside software development lives. If lean aglie can't give me a way to shape expectation of what we're building AND answer the delivery question we're stuck with BS agile, or we might as well go back to waterfall which (accurate or not) has always been very clear with a delivery date.
> Do not burn fissile fuels in your home.

Completely agree; that would be incredibly dangerous and polluting (and probably illegal)!
It’s always the second-last floppy in a series of dozens that is corrupted.
>Burning something for heat is always more effective, cheaper, and produces fewer emissions compared to an electric heater...
>If you’re getting electric heat from coal fired steam that’s always worse than burning the coal locally to heat something, and this is true for all emission-producing power sources.

Apparently you can actually save natural gas with electric heat and a heat pump.

https://youtu.be/MFEHFsO-XSI
To put a pretty positive spin on it: to use extant launch hardware to carry out some key heavy lift missions while developing future, replacement heavy lift launchers.

To put an uncharitable spin on it: to full federal space spending into the same places where its been since the 70s, to not rock the boat.

I think one of the reason some people are so cynical about it is that it appears to have succeeded at the second goal while being ineffective at the first.
What exactly are you trying to convey here? Who else is big within the DDoS protection market? It's not like you could start up your own.
The dose makes the poison.

Most of the fallout will all nearby. I'd try to avoid contamination a few weeks because the radioactive Iodine has a half life of 8 days. Everything else decays too fast or too slow. (I'm not sure how difficult is to get some Iodine pills, just in case. They are quite small.)

Also, "nuclear winter" will be not as hard as the initial models estimate. I hope we don't try anyway. https://en.wikipedia.org/wiki/Nuclear_winter#Criticism_and_d...
The focus today is also on insulation ie preventing heat loss.
That means making houses less draughty.
But draughty houses are also healthy houses.
More fresh air and less mould.
I think it would be better if people accepted that in Winter
it's going to be colder indoors so wear thermal underwear etc.
I do agree about compiler warnings, but MISRA C imposes a lot of unnecessary rules, a lot of unhelpful rules on how you write expressions, and tries to also act like C's type system works a different way than it does. In practice I have found it to actually create bugs. Read the MISRA rules and appendices on their effective type model and the C standard, they have gaps where MISRA actually forces you to write code that looks correct and doesn't work with C's model. I strongly recommend against using MISRA, even in automotive or aviation code (although it may unfortunately be a requirement on any such project).
> What's "wat" (in the same sense as the js "wat" talk) is that the answer changes if the argument becomes negative.

It's the same in Python though? you just prefer the way it behaves (though to be fair it's generally more useful and less troublesome): Python's remainder follows the sign of the divisor (because it uses floored division), while C's follows the sign of the dividend (because it uses truncated division).

Strictly speaking, neither is an euclidian modulo.
Maybe link some of her tweets? I see this point being made repeatedly as essentially an argument of faith, but in fact Keffals simply does not engage in the kind of targetted harrassment that KiwiFarms does. There is, I think, exactly one tweet someone found where she said "I hope they get doxxed" or whatever.

And... OK, that's intemperate! She absolutely shouldn't have said it. She should probably take it down (maybe she has?). Twitter would have been very justified in issuing a warning over it (maybe they did?).

But... sorry, that's as far as that kind of thing goes. It's not remotely the same thing as calling in a bomb threat, or providing a forum for volunteers to post home addresses, or SWATing people, or even doing a pizza flood. It's not, and you know that.

But because so many people here have "picked a side"[1], you all find yourselves in this insane position of having to defend places like KiwiFarms because they're "on your side". And the only way that works morally if is "the other side" is just as bad. But... it's not. It's just not.

[1] On trans rights, which is the crazy thing. Everyone on that site was seriously willing to go to jail just... to prevent having to let people be who they want to be? That's the mind-bending thing to me, personally. You can't just... let them be?
Exactly. This event just makes all the hydrogen car people even more entertaining.

At this point I’m fairly convinced hydrogen cars were a coordinated plan by oil companies to delay EVs. It probably would have worked if Tesla hadn’t come out of nowhere.
The weight of any moderation decision is directly proportional to the size of the platform making that decision. This is a generally well understood principle in a lot of free speech circles, I'm surprised that of everything I've written about Kiwi Farms here, this is the thing that is getting the most pushback from people.

The principle behind breaking up platforms is that individual moderation decisions do become harder the more people that they impact. It's also not just a free speech thing, this is the same reason why it's dangerous to have a browser monoculture. If I tell you that having one company in charge of the entire web makes their individual decisions about the web more impactful and more dangerous, that's something you understand, right?

Same deal for moderation.

Of course, see mlyle's other sibling comment -- sometimes we genuinely can't do anything about a natural monopoly and we just need to recognize what they are. But in instances where we can, decentralizing power decreases the overall risk of moderation mistakes for the entire network.
Are you SERIOUSLY asking for sources on my opinion on an opinion piece? You do know what opinion means, right?
Not my downvote,

But more realistically, there's numerous obscure unknown Americans scattered across the country who would make better leaders than anyone has ever seen. But these leadership positions are so lofty that unless all elements of good fortune are sequentially in place along with some recognized basic qualifications, over a career-defining number of years, no one else aspiring to such a position has very much of a chance to show what a naturally higher performer could accomplish the more there is at stake.

The potentially better leaders who have not benefitted from many, or any at all, of the milestone selective opportunities needed for rapid advancement over a single lifetime, or those who have suffered bad fortune instead, might as well be behind a water buffalo their dang self.

Even if they are regular ordinary Americans, quite comfortable by international standards, with not a foot in the rice paddy. Their chance is still nil.

And I'm talking about the virtual handful that could truly walk right into a top position and outperform the status quo hands down.

When it comes to economics, children having a natural ability to derive equations without training are just as likely to be born into an uneducated family background at the same rate that such a background or culture exists at the time.

Even without education some people whose ancestors have always been behind a water buffalo since ancient history are still around. Among them always have been those whose brain fills with complex concepts more advanced than most PhDs anyway, these can just be different concepts to a good extent.
The salts issue was actually mentioned in a follow up video [0], with the note that only homes with specific water types (excessively hard water if I remember correctly) will require them.

[0] https://youtu.be/Ll6-eGDpimU?t=2099
They're probably equipped with enough food stores to last their lifetimes. That's what I'd be equipped with.

Ways to make fresh water and food, ways to generate electricity, and as we can all guess, an enormous stockpile of toilet paper.
Why the hell do people need cloudflare.

Read a book about iptables. And be done with 3rd parties between you and your visitors.
The argument is that for regions that do not spend much time below 15 degrees Fahrenheit, they tend to be cheaper to run because they can pump more heat than electricity they use, effectively becoming 300% efficient instead of 95% efficient for say an gas heater.

As the temperature differential between the desired temperature and the outside temperature increases however, the efficiency does drop and what you say is true, but for most of the populated world, this is not the situation.

https://www.youtube.com/watch?v=7J52mDjZzto

(edit: I think you're going to get a lot of links to the overly in depth series tech connections, but I'm leaving it here all the same)
Look at it from Cloudflare employees' point of view though. Do they really want to spend their time getting drawn in to any more of this trivial online drama? No, of course not. Pulling the plug is the sensible business decision.
Which is odd. Who thinks someone who has a couple or few hundred million from Silicon Valley-type startups and investments has any more pull than say, Madonna? Or a group from Hollywood?
Before I proceed, I’d like your prespective on the following:

1) Does industrial activity reliant on fossil fuels contribute significantly to climate change?

2) Does engagement-first online political content curation contribute to political instability?

3) Does large scale arbitrage in the areas of real estate, energy, and food production significantly contribute to quality-of-life instability?
And? How does this make their opinion more or less valid? This is a classic example of appeal to authority.
Yes.

Re your deleted comment about "hostile forks": allowing users to run whatever software they want is precisely the point of open source. It's not "hostile" to have different opinions to you.

The project looks cool nonetheless, but it is still true that if the users don't control the software, the software controls the users.
To add onto this you can easily increase the clock for specific clock domains using a PLL (Phase locked loop) as a clock multiplier.

This comes with all kinds of caveats and complications(PLL clock multiplication is "fuzzy" and subject to phase drift and variations in actual frequency while normal clock division is essentially as close to exact as you can really get). Because of this, like mentioned it's preferable to use clock division instead of clock multiplication where possible.
Why not read both?
That’s to keep the obscurity vibe
Is the human brain doing something fundamentally different than some other animal brain, say a Chimpanzee or mouse? Or is it just doing more of it, is it just larger and perhaps a bit more efficient and maybe organized? I see no reason to say the human brain is a fundamentally different kind of computation than any other animal brain.

So is there some animal brain, no matter how primitive, that we could in principle simulate? I think so. I think that is realistically within our capacity.
Buffy had it right, "Fire bad, tree pretty".
Heat pumps can be efficient enough to overcome the losses from coal -> electricity. So it's possible to use a heat pump to heat a space more efficiently than burning that same coal directly in the space.
What’s the advantage of an air-to-water heat pump as opposed to an air-to-air system? Why are they used for new buildings, instead of a standard A/C indoor unit which can also offer cooling?
“Due to a rare energy emergency that may affect the local energy grid, your temperature slider has been changed from 8:00 am — 8:00 pm because you enrolled in a Community Energy Savings program.”

Specifically, one that offered them incentives in exchange for some degree of remote control over the smart thermostats. Those customers, for example, get a $100 credit at sign-up, and $25 each year.

It seems that customers were aware of that because of the participation benefits