skysight-inc/HackerNews huggingface dataset:
Hey HN! I'm part of the team behind this device. It can keep vaccines cold indefinitely without electricity—you only need to move the device in and out of the vaccines container and maybe lay it in the sun once in a while. This is a link to our design contest submission page.
It's an absorption heat-pump that uses osmosis and exo-/endothermic salts. There's a cooling phase (absorbing heat) and heating phase (releasing it) and it switches b/w them when it crosses a temp threshold (73°F). See diagrams in URL.

How to use it:

Put vaccines in an insulated box (maybe cooled earlier w/ the device). Put the pack into a stream (or already cold box), which lowers the pack's temp below 73°F and starts the runaway cooling. The pack gets cold (~40°F) in a matter of seconds. It absorbs heat from the box and stores it as chemical potential energy in the form of dissolved NaNO3 and crystalized CaCl2. After hours or days, remove the pack. If outside air is above 73°F, it automatically triggers the heating phase when it warms up to room temp. If not, manually warm it up (lay in the sun or on the stove) to bring it above 73. Then in just minutes it gets hot (~105°F) as the salts release all their stored heat. When heating finishes and the pack returns to room temp, store it or put it back in the box to start cooling again.

Principle is similar to other systems, e.g. A/C in RVs (wikipedia.org/wiki/Absorption_refrigerator). But A) it's driven by small temp changes you apply, so it's easier to do w/out electricity, and B) it uses safe cheap materials.

Cooling per kg (of salt+water) is around 90% of melting ice. (ie, approx the same weight of ice in the cooler for same amount of cooling)

--

Big impact where spotty electricity makes storing vaccines difficult: long electricity outages spoil vaccines, which have to be thrown away.

Another monetization: sell as electricity-free heating to backpackers.

This is part of an engineering competition. If you want to support it please vote for us!
While you are technically correct, that's pedantic and doesn't impact the conclusions of this article one bit, nor does it really add to the discussion. It's written for the layman, and chose to purposefully ignore technical details such as lim x->0+ 1/x = +inf and lim x->0- 1/x = -inf.
Every single one of the things that you just listed are present in a many parts of the developing world. Most of these places are not considered communist.

In fact I would say those things you said perfectly describe a country that is a Dictatorship - but there are lots of those that are not socialist.

I assumed that you thought they were communist because you disagreed with my original post which claimed that they were not.
> Venezuela is socialist because it combines destructive economic measures with collectivist ideology, takeover of institutions like the Supreme Court by Party supporters, violent government-backed militias, fraudulent elections, cult of personality, etc.

Except for the phrase “collectivist ideology”, none of that has anything to do with socialism at all.
China, when it was actually socialist and redistributing wealth, took itself back 100 years and probably produced more human suffering than any other event in world history. So yea, perfect example. Then they reformed and decided to maintain the propaganda but in actuality become capitalist, they became the biggest success story in history. Today, China is more capitalist than the USA. They provide less social services to their people. A few wealthy people control the means of production, and use it to get returns which they invest in more production.

Russia hung on for a while, caused the second largest amount of human suffering in history (only second because they had way less people to start with), and eventually economically collapsed despite having incredible natural resources. They rebuilt along capitalist principles and were doing well until recently. I've read some very interesting articles which talk about how it is almost mathematically impossible to create a smoothly functioning planned economy the way Russia was trying to do it. I wish i could remember where they were. They had smart people who really tried. When the incentives are not lined up properly for the workers and managers to benefit directly from their own production, it is just too hard to control all the variables.
Well I think that the solution here would be to convince people to use encryption and make it easier for them, instead of giving them false hope like in your case.
There's a difference between speaking English and expecting a local call to be in English. Sure they could have the conversion, but trying to do a tax scam on a Dutch person in English has ~0% chance of succeeding.
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My post was in response to someone comparing APSC and Full Frame cameras and that's what I was comparing.

I'm totally aware of the difference in quality between a decent camera and a phone.
Some California cities used to have some of the worst smog in the world. These regulations and exceptions were put in place to curb that. And considering the trade tariffs on some vehicles the difference could be a wash in terms of margin for car manufacturers.
What happens to our clean air?
Interesing info! Thanks for sharing! Ruby is not so popular language when compared with others. Only about 10% of coders use it. Though Ruby has its own advantages like fast development, flexibility, inheritance and cost-effectiveness. Recently I've read a Ruby on Rails salary survey on https://diceus.com/a-comprehensive-ruby-on-rails-salary-surv... and was surprised by the wage rates in this sphere. Maybe someone will also find it interesting!
Show them this video:

https://www.youtube.com/watch?v=cNxadbrN_aI
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I'm the opposite. I actually believe that if the overwhelming standard of the kiosk order were to exist today, it'd be an excellent opportunity for a chain store to re-introduce human interaction when ordering and be very successful along with that "new" marketing approach.

There are excellent pros to the kiosk, and I use it when impatient and not wanting to stand in line. However, if I walk in to an empty store, my experience would be more enjoyable when speaking to a person rather than a wall size touch screen.
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For the most part, you are free to start companies and sell goods and services in Venuezala. There are exceptions to this, some of them ill-thought out, but none which cannot be also found in much of the west.
Available in Canada for at least the past few months as well.
I thought this was some kind of extension to make wikipedia or others online encyclopedia more smart. Like visualization of math stuff that can be processed and played in browser or something like that.
> It sounds more like he has a war like Iraq and Afghanistan in mind. Imagine [...]

So... that would make them exactly the wars in Iraq and Afghanistan. If that were the case we wouldn't have to imagine, we'd have the results in the field already.

So that war must be of a different kind. Not the kind where you already have technical superiority and have 0 incentive to develop it because you can already make truckloads of money by supplying current generation equipment to the front lines. It has to be a war where developing the new tech is the difference between your country existing or not a decade or more from now.

That's a special kind of war. It could be a cold war but it's unlikely to have one of those in the same way the one from the 20th century unfolded. And if that kind of "hot" war is the only one that can bring these improvements I'd rather stick to driving my own car and labeling my own photo library :).
Like Argentina (mobilizing it's own army against it's own people to enforce IMF reforms right now) is a showcase about why market driven capitalist governments with "trickle down economics" delusions are a failure?
I'll mince no words: what an appallingly stupid idea.

First of all, do you think the US would do anything about anything, out of the goodness of their heart? Hah. Maybe you believe their interventionism is part of their efforts to build world peace, or maybe to, how do they say, "spread freedom and democracy"? Such naivety. The US protects its own interests and those of its business owners. If that means overthrowing democratic governments, so be it, if that means genocide, so be it, etc.

Second of all, the callousness with which you propose simply installing a puppet and letting the US govern the country is beyond description. Tell me, how would you feel if a foreign power decided you don't know how to govern your country, and that you need rescuing, and that from now on he would be in charge and dictate how your country gets run. Would you like it? If the answer is, as it must, "no I would not", then the only conclusion I can draw is that you view the Venezuelans as somehow incapable of making the right decisions and ruling themselves. As babies, or morons. Colonialist thinking, nothing else.

Thirdly, your point about letting oil multinationals ransack the country, and how that would, somehow I guess, improve the lives of the population. I won't comment on this one, because I cannot even fathom the train if thought here.
> Imagine that you're providing a service in exchange for money. Would it be fair for someone to demand money back after they consumed the service?

Note I said delete or anonymise. The point is that the information shouldn't be personally identifiable once the person has asked to be forgotten (within reason of course - you still have to hold as much info as the law mandates whether that person likes it or not).

You're welcome to keep the anonymised data and do whatever ML or other analytics with it.

> If you do not wish someone to have your data, don't sell it to them.

There are plenty of services that gather far more information about you against your will than ordinary folk imagine, IIRC Google and Facebook's tracking of your activity via their ad networks even when you're not visiting pages on their domain. This isn't acceptable, and lots of ordinary people aren't savvy enough to use adblockers or script blockers, yet they never consented to that type of data collection.

The GDPR at least gives them some say in what happens to the data that was collected about them.
I actually have two... One is a Miele H 6860 BP, while the other is a H 6800 BP.

(Entirely unrelated: Does anybody know how to check the software version on these ovens?)
So is the main difference between FIDO U2F and regular TOTP simply the addition of the HMAC-SHA256 of the domain on the server side?

Is there a requirement that FIDO be implemented on a hardware device?
Of course he has access to his lawyers. See this source in Portuguese https://www.cartacapital.com.br/politica/haddad-passa-a-ser-... The former São Paulo mayor, who is also a lawyer and form the same party as Lula, will have access to Lula (now his client) any day of the week.
The 2018’s blind spot detection works great for that purpose, but you are relying on feedback (generally a beep), not a video feed
Anecdotes are always going to be anecdotes. I can give you the complete opposite experience with my friends, some of them who tackled depression with mushrooms and are nowadays much happier and productive people.

The older I get the more I see people have mental issues, as you are out of your teenage years and a lot of more stressors pop up in your life it's also much easier to trigger or develop mental health problems, so there are bunch of other variables that no anecdote will control for thus making it just a "feel good to tell my story" kind of post, not really enlightening.
Which of course means it is not literally true, beause the paper those notes are written on is worth a lot more.
One interesting thing for databases is that as nonvolatile storage latency decreases, traditional btrees get more attractive relative to newer log-structured designs. Especially if the write endurance is increased as well over current SSDs.
I remember in undergrad I took a class and the topic of the day was the concept of an inflection point. The way the professor demonstrated it was like this:

Based on time spent and potential earnings forgone, a Bachelor's degree is a good investment. A Master's is a good investment. The inflection point happens, and a Phd is not as good of an investment.

That's all the information I needed to decide to stop after a Master's. Have only regretted it once, when I worked at a company that was owned by someone with a Phd in Economics and with many Phd Economists working there. I felt like a second class citizen and in a moment of irrationality, when the entire employment universe seemed to consist of only this company and ones like it, I thought about going and getting a Phd in my late 30s.

Thank God I didn't. Making about 2.5x as much as I was making then, two jobs later, no further education needed (other than Cloud Guru courses).
The doors at our local McDs are usually kept open.
They mention plentiful motivated job applications, how is the market from the perspective of a developer looking to focus on Haskell?
I suppose that this is correct, but mostly because of the cost-benefit analysis. If labor is more expensive than automation, then the company will turn to automation. Automation is getting less expensive and labor is getting more expensive, so here we are.
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Name one (developing) country that was improved by US interventionism. I can name a dozen that were destroyed, ransacked by US businesses, genocides committed, etc.
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We should think twice about teaching dogs to drive because they might get distracted by squirrels.

Let's see how many other technically and scientifically implausible things we can mentally masturbate about.
Tax ok, but I think many would fall for a crypto, or investment scam.
The author obviously did not understand Zen meditation at all:
First, when "being remembered" he jumps in mind. Second, he compares bis situation with these oft the cats.
Meditation means not to jump and not to compare.
At least to some extent, how you sees this relates to what you want/think AI to eventually be.

A while back, I heard a particularly curmudgeonly interview with Noam Chomsky, just commenting on the state of AI and recent AI programs (Watson, Deep blue..).

Chomsky basically called all these statsistical AI programs brute force parlour tricks, nothing to do with computer science or artificial intelligences. He stopped just short of calling the whole thing fraud. Real AI are things like bird flocking algorithims (did he work on something like this, can't remember). I think the jist was that to be an AI program, a program must embody a theory of intelligence. The theory-less nature of modern statistical algorithims seemed to really peeve him. maybe he's right.

Anyway... I don't remember what point 9if any) i was driving at. I think there are abstract values at play, in how we narrate progress. Since we still don't know what inteligence "is," or even if it is a distinct thing, it's hard to know what the real milestones are. Personally, I like the fully realized, running at scale "proofs," but that probably says more about my ability to understand theory than anything else.
I would agree with you, up to a point. I agree that one doesn't need to put oneself under undue strain every time in the gym, and you can get a good workout from doing lots of reps for light weights.

But naturally by virtue of not increasing the weight on the bar one will reach a point where one ceases to get stronger (measured by the amount of force you can produce). There are limits to what more reps will do for you.

So don't deadlift your 1RM every time you go to the gym, just slowly increase how much you lift in a safe and structured manner.
> No more waiting in line, you just go to the kiosk and then pick a seat, they serve at the table.

McDonalds should introduce this in more countries. At the kiosks in the Netherlands, after you order, you still have to wait at the counter for your order to come up.
Why do anything that makes life more comfortable?
I'm at a SLAC. Here are a couple of reasons that the institutions want this.

1) Teachers should know more than the students. The degree quantifies that.

2) The highest-rated SLAC's have PhD faculty, and so the next-highest aspire to that.

One way this is concrete is that the accrediting agencies put as a point they look for that all faculty have a terminal degree. And people looking at colleges want to go to the highest-rated places (subject to monetary considerations), so it is a major factor in enrollment.

3) It helps keep you alive, and your teaching reflects that.

This third one can sound a little BS but in my experience having a professional activity as a creative output definitely helps keep people from becoming toasted.
Actually, it's the opposite.

A 4x6 print didn't have crazy high resolution. They usually use 1800x1200px as input resolution (~2.2MP). Your iPhone X is actually slightly more detailed (2436x1125=2.7MP). And if you're talking about stops of dynamic range, print has always been less than a screen.

But if you want a photo to look crystal-clear on your iMac's slide show screen saver? That's 5120x2800px=14.3MP. It allows for stunning detail which consumers just never had access to before. (Even the iPad Pro is 5.6MP, more than double a traditional photo.)

But the real advantage, of course, in both megapixels and dynamic range is in post-processing: you can crop to the quarter of the photo that's interesting and bring out the detail in the shadows and it's still high-quality enough to use as an eye-catching retina-resolution header for your Medium post. Remember, phones don't have deep optical zoom lenses, so megapixels have to do that job instead.
I thought babies were also known as night terrors...
Somewhere in an infinite number of multiverses there is a room with both you and an elephant.
Pretty much this. With the current tech stack in telcos, the only way anything can change is if they're put in a "you're responsible for this call, unless you can point to who sent this call" situation. While the receiving / forwarding party can't validate the originating number, they can always point at the telco that sent the call in. Repeat until you find a company / person to fine.
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That is one hell of a quine.
Do people writing about India in the west even know that there is an entire part of the country where people look more "East Asian" than "Indian"? Are writers generally aware of the North-Eastern parts of India at all?
More hands touch the door handle entering the building than the kiosk.
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I just assumed to follow the rules. Especially, because I can see myself needing a Russian visa in the future and do not want to have any red flags in my file.

So it's my understanding that the registration goes into your computer file. Before the World Cup registration was required if you stayed more than 5 days in a given city. During the World Cup it was reduced to 3 days [0].

I did meet an Australian group who did not have the time to register and I'm guessing there were probably a lot of visitors like them.

It's possible (speculation at my part) the border controllers were instructed to go easy on people from Western Countries.

Perhaps given the large bureaucratic process of registration, it's possible the orders were to be flexible. It's also possible that when they scanned the visitor's fanID when entering a stadium (again speculation) that it became a form of registration, and these people were flagged as real football fans and not some threat.

It's clear this world cup was used to boost tourism (seeing how the FanID visa free visit is extended till the end of the year [1]) and the last thing the country wants is some Kafkaesque experience by some western blogger. So there is probably flexibly built into this rule. I just wouldn't take the chance.

That being said, I just assume to follow the rules. Particularly, if you think one day you may want to visit Russia again.

[0] https://www.accountor.ru/en/fifa-registration-rules-for-fore...

[1] https://www.dw.com/en/russia-to-let-world-cup-fans-come-back...
Farming, at least for your family and not commercially is not all that labor intensive. There are daily chores, a few peak seasonal activities, but outside of harvest its much easier than say an office job.

Baseball and cricket exist to fill the empty days of summer where bees, sun and the occasional down pour automate the bounty. You basically have the whole of winter and most of summer to trip balls.
I've just looked on Boxcryptor, and they appear to have a free tier. Are you sure it's subscription only?
In the Netherlands, I have even seen one McDonald's where the cashiers' registers were hooked into the same system; i.e. if you ordered at the cashier, you would get a number just as if you used the kiosk and would have to wait at a different counter to collect your order.
Sounds like you're an ideal customer for a diner, not McDonald's.
Too bad that so many people working in the field or ones just reading about it now assume the technology was just invented these days by Tesla or Waymo. It's about who shouts the loudest.
The Chick-fil-a app (not a kiosk but same concept) does make it a better experience despite the fact that Chick-fil-a employees are known for excellent customer service.

During lunch hour my Chick-fil-a was a mad house of ppl waiting in line to order but once the app hit critical mass, the line basically disappears and people just show up to pick up their order and leave. I think the key to success iss that CFA only has a couple items on the menu and there are only so many ways you can customize a chicken sandwich (or tenders or nuggets).

Because the app streamlined their process they upped their throughput and hired more employees to meet this demand. So I think kiosks could ultimately be a win-win for employees and customers but we gotta get over the learning curve hump. The McDonalds kiosks are NOT user friendly.
If performances of literary works count, then presumably TV, movies, and plays are included as well?
You hear what you want to hear. I never said "leftist". I said socialism-communism-attempting. Denmark/Norway/Sweden are leftist, but not socialist, for example, they are all capitalist countries with decent social safety nets built in.

If you look at the list of countries that tried to build socialism/communism, most of them went through hyperinflation, and all (as far as I know) destroyed their economy. With the exception of China, which isn't 100% socialist yet (as in, the means of production 100% controlled by the government). No country ever achieved communism.

Btw, Cuba is slowly starting to move away from socialism:

https://www.nytimes.com/2018/07/22/world/americas/cuba-const...
My colleague (a Kerala native) begs to differ :)
You get a few benefits (protection against local interception) but it comes with a significant downside as it takes away the ability for an end user to identify if the connection is actually secure. For example I wouldn't enter my card details or other personal info on a HTTP site, but when CF is in front of
it, I have no way of knowing if that's strict HTTPS to the origin or if most of the connection goes insecurely over the internet. The other problem is that CF makes it very easy for less technical website owners to click a button, see a green lock and assume everything is fine.