skysight-inc/HackerNews huggingface dataset:
There have been two major hurdles for the development of hydrogen fuel-cell cars:

1) storing the hydrogen - hydrogen is extremely corrosive, and not very energy dense compared to gasoline

2) variable energy output - fuel cells are good at producing a steady, constant amount of power, but the power requirements of a car can be quite variable (especially for city driving)

Anyone have details on how Toyota overcame these?
Ancient Roman Water Networks Made the Empire Vulnerable
Monitor the North Korea / US Cyber War in Real Time
I take it you have a familiarity with the subject. If a layman with a science degree would like to start following the developments in the field, would you suggest any journals/conferences as a starting point?
Predatory Fining and Mass Surveillance
Ask HN: Honest Race Question from a Whitey
As a young white male, I have read tons of articles about race and gender in Tech, and elsewhere. That pattern I have noticed is that authors are saying white males are privileged and have a sense of entitlement. I know it's a broad brush strokes kind of deal and there are exceptions to this rule, and that every ones opinion are different.

(This can be narrowed down to Tech so that admins don't boot it to the garbage can)

Let's assume I do have more opportunities than people with other races and genders,
What should I do about it?
How can I be helpful?
Does anyone expect me to personally give something up/back?
I'm pretty sure Shostak is talking about probabilities al the time as he is the director of the seti institute. The founder and friend of Seth came up with the drake equation.

"The Drake equation is a probabilistic argument used to estimate the number of active, communicative extraterrestrial civilizations in the Milky Way galaxy."

We are the only known intelligent species in the universe. So we model these exceptions after ourselves. Just like we search for earth like planets in the goldylock zone. Carbon and (possibly) silicon live forms are the only ones we know can happen.
That seems like an expensive way to turn your valuable daytime electricity into less valuable nighttime electricity, but I guess it makes sense if your goal is to disconnect from the grid.
Of course, and the trick is monitor payload size, getting 500kg into Low Earth Orbit doesn't help your nuclear ambitions at all, but getting 5,000kg into LEO does.
Here is a good resource to compare programs:

http://www.seed-db.com/accelerators
Released my first two side projects and presented at the largest Android conference in the U.S.
Eww. What does that?

Vector clocks? Sure. UTC clocks? Not a chance in hell I'd ever trust them for a reconciliation protocol. I've spent way too much time around the internals of hypervisors, and seeing how various OSes (and versions of them) do and don't keep time well in virtualized environments gives me zero confidence. The fact that any two given cloud VMs agree on the time within 500ms is a testament to the sheer bullheaded determination of their administrators.

Simply, you cannot trust timestamps between two machines to determine ordering. If you do, you will have a bad time sooner or later (so to speak).
CVE-2014-9090 and CVE-2014-9322 were fixed in 3.18, just before it was released.
> And if you think about the amount of gasoline infrastructure that exists, we'd have to pretty much duplicate that, or convert that, into hydrogen shipping infrastructure, which is a pretty tall order.

On the other hand, electrolysis can be significantly more distributed than gasoline, you don't need a limited number of refineries anymore. Hydrogen can be generated city-wise, at the station, or even (with further efficiency hit) at-home.
Maybe so, but don't use the word "hack", it's overused, it's a turn off, and it has lost meaning.

That said, just post your stuff, it might be worth reading. Someone will read it.
I created https://webmon.com . I'd love to hear your feedback on it since you were a Pingdom customer.
That still doesn't make me feel better.
The value of NK isn't anything internally intrinsic; the main reason it has "survived" with its current and past leadership is that it is a buffer between the "West" and China. And previously it was seen as a buffer between Japan (and also the US) and Russia; Stalin was the one who authorised the Soviet invasion of Manchuria in the very last days of WWII. Russia's leadership at the time remembered Russia loss of face (and territory) to Japan in 1905; remind you of current day invasions and annexations with ruminations of nationalism?

The Korean War was in many ways similar to a "more power" version of Ukraine today.
OCaml implementation of Norvig's spelling corrector
We appear to already have the infrastructure for electric cars, and at low adoption rates that's true. But according to the utilities, that infrastructure is in no way ready for sweeping adoption of electric vehicles, so then too we would need to overhaul our existing infrastructure.
Regenerative fuel cells are cells with an in-cell hydrolysis system; if you could incorporate them, a fuel cell vehicle would have pretty much the same recharging UX as any other EV.

Even with stationary at-home electrolysis systems, if you don't store more than one fill-up in the system, there's marginal additional risk compared to having a hydrogen-fueled vehicle in the first place.
Ok, cool. That explains nicely the feeling I was getting.

(And your note reminds me of some of the QM and modern physics tests I had as well - I didn't take grad work, but I still remember thinking, "Man, we spent hours deriving some of the stuff, and I've got... less than 10 minutes. Whelp...")
The Naked Gun: from the Files of Police Squad!, anyone?

The plot of that movie revolved around a professional baseball player psychologically reconditioned to assassinate the Queen of Canada during a game. Oddly enough, neither the Expos nor the Blue Jays were the visiting team.

Interesting that the article only gave an honorable mention for the fistfight where Lt. Drebin rubbed the birthmark off of Gorbachev's head.
Correct me if I'm wrong here, but isn't that only helpful if you have multithreaded python programs? I have found that if my process is too slow, I can consider porting it to numpy/numba, cython, using pypy or dividing up the work using multiprocessing. multiprocessing is barely more work than using the threading module, and completely avoids the GIL AFAIK.
> The big boat-anchor feature of Python is "setattr", combined with the ability to examine and change most of the program and its objects. [...] If "setattr" were limited to a class of objects derived from a "dynamic object" class, most of the real use cases [...] would still work, while the rest of the code could be compiled with hard offsets for object fields.

Isn't __slots__ made for that specific usecase? (when you want to optimize your code by specifiying specific attribute names)

I think the "dynamic" behavior is a sane default (since most people don't need that optimization).
I've always thought a good enough high speed transport is a scheduled flight that leaves every hour on the hour and you can buy tickets right before the flight.
While I guess it's good to provide people with information that they want, I disagree with the premise that Local banks and credit unions work within established localities and reinvest depositors' money into local businesses, farms, and individuals. To put it simply, they often use your money more responsibly than large megabanks, and your community benefits.

Every business is located somewhere. Why would it be better for a person to invest in projects located near themselves, than far away? From the way they phrase it, you'd think that megabanks [sic] throw the money into a black hole, or otherwise use it in some manner other than investing in businesses (which again, must be located somewhere).

The movement to buy/invest locally goes against all of economic theory. Artificial barriers to trade (such as a choice to buy locally) reduce total welfare, and can rarely be justified in terms of income distribution (because the best tradeoff between total welfare and income distribution comes from taxation and redistribution).
The Real Story on How Reddit Notes Came to Be
Relax, it's North Korea, the nation-state equivalent of the short bus. -Archer
Strange that it would cost just less than a full tank of gas. I was assuming it would be much cheaper, not comparable to gas.
Some (most? all?) people have the capacity to think highly complex thoughts without using language. It's a common misconception that human thought "has a language", and I see many people ask the bilingual "what language do you think in".

They never seem to understand that you only "think in language" when you're thinking about talking to someone else, rehearsing a conversation or whatever. They're prone to a cognitive illusion... when they think about this, they try to "listen" to their thoughts, which invokes that conversation-rehearsal faculty. And lo and behold, they "hear" a language.

But they don't think in this manner. Not all the time, not even most.

So if you're not thinking in language, why would your thoughts be limited to your vocabulary?
What a great resource, bookmarked!

Of course much of this has been written about in various blog posts, but having it all compiled in a single resource is very handy, especially when being in the startup phase of a SaaS business selling booking software (https://zapla.co). I'll definitely be implementing a lot of this advice!
I do like the choice in entity to construct.

I'm open to giving it a look, but honestly I really love ES6, React and Express. I can't think of much reason to leave them anytime soon.

I've been known to be tempted. And if it really increases productivity the way the marketing claims than I can see it's use case at the company I work for as well.

My fear is kind of two fold.

One I really like the NodeJS micro-modules/micro services architecture. I like being able to consider each entity of an application it's own application. It's really easy to scale, it's really easy to completely replace portions of the application when I want to update them.

Second, I don't like 'automagic', I found both Rails and Ember really awful for me personally. I had to constantly check the documentation to understand what is expected of each layer, and there are always so many layers.

Last question if you'll continue to indulge me. I prefer functional programming to OO, since Meteor is reactive is it safe to assume it is also geared towards a functional paradigm?
For what it's worth, You sound alot like me, but I've never visited California. On the other hand, I've lived in New York my entire life and I love it.

Come visit New York and see how you like it!
I have to take exception with the term terrorism here. They were victims of cyber crime, sure.
I think you can just accept that as a tautology. If a bunch of humans want to save their culture then by definition it has some human value in saving it.

A separate question is whether we have a duty to help _other_ cultures in their quest for self-preservation. I think there are altruistic reasons for doing so stemming from the fact that most people value their own culture so we can empathetically understand why others would want to preserve theirs.

There are also interesting biological and sociological arguments around diversity and resilience of the species that don't rely on altruism.

The question specifically about language is asking something different though. So this conversation should just be about languages where the group that spoke it no longer has enough interest to continue that tradition. So the question becomes should we save the language of other cultures for them? I don't think there is a strong case (other than academic preservation).

Arguments about the intrinsic relationship of language to culture are valid but fall apart when the members of the culture itself don't care enough to preserve the language.
oh if it were Russia I am quite sure the current Administration would waste no time exposing them. The level of disrespect shown towards with both official and unofficial comments borders on undiplomatic by most counts.

It matters little because the big issue here is that a group of cyber terrorists have effectively shut down a major corporation and most western countries are just standing by. if that is not green lighting future copy catting nothing I don't know what is.

The President should screen the film at the White House and allow it to be distributed to the armed forces
If you have net metering, let the solar panels send to the grid during the day, and charge the car from the grid at night. If you have net metering with time of use metering, the difference in energy prices for generation and use, then you're being paid to essentially use the grid to store your solar energy so you can use it at night.
Did you get an idea as to the cause of the problem? I bet that'd be of interest to either the mdbm maintainers or the kernel developers.
On 2), the Mirai has a 1.6kWh battery. I believe the model is an electric motor driven by the battery, which is recharged by the fuel cell.
"The US in no universe will launch a military action against a rogue, shells-pointed-at-Seoul, nuclear armed nation because they hacked Sony."

Is that your gut feeling? :p I understand it's backed by strong arguments but so were (some) security professionals opinion. They might give updates after the FBI's communiqué and are aware of the limitations of their argumentation. That being said I do share your opinion on the matter...

EDIT: elaborating...
EDIT 2: Not sure why I'm getting downvoted. No matter how much I believe US won't go to war there is always a possibility I could be proven wrong. I don't think security professionals analysis was based on "no information at all" (think things we know about North Korea), no more than the analysis we have about US not going to war.
So Sony leaked all their guts, but this movie?
Younity: your personal cloud
How not to lose a million dollars -Understanding and negotiating startup equity
I think that's my question, as an individual, you can't say that one is more effective than the other because, as an individual, you can't account for the placebo effect. Personally, if it works, it works, placebo or otherwise.
30 Days to Startup – 2015 Challenge
I remember something similar in my qchem class, that uncertainty basically falls out of the Fourier transform (functional equivalent of vectorial commutativity problem), and so the particle (center of probability of the waveform) automatically inherited uncertainty from the wave equation.
The difference there lies in that the electrical infrastructure can be overhauled gradually, as electric car adoption increases. We already have something that is useful to the current EV owners, and it can be made better. I'm also not convinced that the utilities are correct, current peak use is probably a lot higher than what a fleet of slow-charging vehicles would consume at night.

In the case of hydrogen infrastructure, we have nothing. If you're the first guy to buy a hydrogen car, you can't fill it up anywhere, there's an enormous amount of investment and work needed to get to that first hydrogen gas station, and I don't see that happening. Who would put up the money to make that bet?
I think it depends on the target customer/client. I as a technical person hate when things are not up front like pricing etc.

But then most people are not me, and there must be a reason why businesses continue to do this (better results I would guess).
As i understand it, transporting humans via air is largely infeasible without fossil fuels. It think the main benefit of a hyperloop is that it seems possible to stick with it as we make the energy switch

EDIT: pretty convenient that it would benefit from batteries and solar, huh? ;)
They don't mention the price because current systems cannot accurately measure the amount of H2 being dispensed into the car. Every Fuel Cell car comes with free fuel coordinated by the manufacturer.
That's silly. The fuel and operation costs are way too high.
Net revenue isn't operating income - it does not include engineering or administrative expenses, where as net income does. So even with net revenue, they would not likely be profitable.
Consul Template v0.5.0
A lot of people nowadays support things like getting people fired for having unpopular opinions and say in response, "freedom of speech doesn't mean freedom from consequences." Unless they automatically only believe in what's popular, it's in their best interest to protect expression of unpopular and offensive opinions, because when the tide of popular opinion turns against them, when the internet hate mob starts attacking them, then they'll realize why there shouldn't be harsh personal and professional consequences for expressing unpopular opinions.

People defend these sorts of vigilante actions by saying, those people aren't just expressing their opinions, they're saying hate speech. But almost all political opinions can be turned into moral faults though. If you support abortion you support murdering babies, you are a monster. If you support Palestine you support anti-semitism and terrorism, you are a monster. If you support (any right wing opinion), you are a monster.
MetaFFT: Template based C++11 FFT implementation
Why? The battery swap only makes sense when you are on a road trip longer than the typical range of your battery(hundreds of miles), so it's not like Tesla owners are going to be doing a battery swap every week. Most likely, tesla owners will charge at home for over 99% of their trips, and maybe choose to do a battery swap if they are on the road for a long time and don't want to wait the 30 minutes for a super charge.
I can verify that van Rossum's comments are by him. I saw him walk out of the aforementioned Nuitka presentation at EuroPython a few years back, and clearly out of annoyance with it.

See also https://groups.google.com/forum/#!topic/python-static-type-c... if you wish additional evidence.

That Google Groups thread shows that he's irritated because he thinks that the Nuitka author doesn't understand the issues: "... he is incredibly naive about what kind of optimizations he'd like to apply. (He basically doesn't seem aware of the difficulties arising with static analysis of Python.)" While the Unladen Swallow and PyPy developers do understand the issues.

I think it's in character. I gave a talk at another EuroPython on measuring performance. Partway through he asked "isn't this just a repeat of the timeit module"? My response was "yes, I'm explaining why it works the way it does." I think that was sufficient to mollify his irritation.
The idea that a galaxy could be rapidly colonized by Von Neumann probes makes sense to me, but when I think about the specifics I have doubts. How many rare-earth metals go into an iPhone? Where will it get plastic from? How will it create circuitry for the new probes? Is it going to build a whole fab? Does it need to find planets where dead dinosaurs have turned into oil? It starts to seem that these probes would need a planet as rich as Earth to build more of themselves. I guess if we had some amazing nanotech advances and you could build the whole thing out of easy-to-obtain materials it makes sense, but how likely is that? I'd love to hear from someone who had thought about this longer than I have.
As more solar power comes online, we may see the cost curve invert, where power is cheaper in day time.
Here is the paper: http://arxiv.org/pdf/1403.4687v2.pdf

My quick read suggests that the authors are restating the relationship using their "Entropic View" notation which, as it turns out, has the same expression if you come at it from the uncertainty principle side or the wave equation side.

That is nice from the point of view of validating their notation but it doesn't give us anything we didn't already know.
is anyone else getting a beta.wired.com prompt and scss errors?
> Our future robots may be very good at passing information via some programming code... but will they love? Will they be sad? Will they read literature to empathize with the experience of other beings?

That sentence gave me a flashback to my favorite literature reading robot - Orphu of Io (http://en.wikipedia.org/wiki/Ilium/Olympos)
Ok I was wrong about the regenerative breaking. It makes sense since it would be easy to implement. Most of the drive system of a Hydrogen Car will be electric already. It will use batteries as well. The world will once again be at the whim of the hydrogen producers which would likely be Shell, BP or Exxon. Electric cars are only going to get better and generating your own power is only going to get easier. Oil companies don't like the loss of control. Hybrid's pull some tricks to save fuel, but I might argue they have much more points of failure and are harder to fix when they do fail. I predict that on Dec 15th they will sell one or two of these cars to Toyota Executives whom receive a bonus just a little more than what the car would cost if they did.
"A call at this point is probably wasting my time and theirs."

Most salespeople spend countless hours of time with potential customers who don't purchase - it is certainly worth their time if there is even a slight chance that you will consider the product in the distant future. You are definitely NOT wasting their time.
Wasting time arguing with the lowest common denominator, not knowing anything about them, their age, their credibility, is so utter useless. I've given up reading any comments about anything whatsoever besides HN.
Google supposedly has implemented something similar called user-level threads, which they talked about at the 2013 Linux Plumbers Conference. If I recall the video correctly, they talk about plans to open source it, but as far as I know there hasn't been much movement in that space yet:

http://www.linuxplumbersconf.org/2013/ocw/proposals/1653
https://www.youtube.com/watch?v=KXuZi9aeGTw
htop shows a T in the state column when the process is suspended or Traced
Impress.js: Beyond the Presentation
I'm just one data point, but my children usually suffer pretty badly when they have colds. I teach them that you can't fight the cold, but you can make it more comfortable to sleep (which goes a long way towards fighting the cold).

I give Acetaminophen/Paracetamol/Tylenol for pain, and a mucogenic (Guifanesin or the much better Mucosolvan/Ambroxol if I can get it from Europe) to thin out the mucus secretions.

It goes against instinct but making more mucus keeps it from building up and turning into that gunk that starts sinus/ear infections and never gets out of your lungs once the cold has passed.

I really wish Ambroxol would be approved in the USA, but apparently it's too old of a molecule to successfully recoup the FDA approval expenses.
I don't know about the others, but mint being "easy to grow" is an understatement. Left unattended, it can take over a garden like the legions of Rome.
> There is no "best" way to develop technology, and there is certainly no predetermined, given course that technological development must inherently follow.

On the other hand, many inventions and discoveries have been made simultaneously, and presumably this happens even more often than reported since it’s difficult to prove your invention is original once it is already known.
"At least initially, battery swap will be available by appointment and will cost slightly less than a full tank of gasoline for a premium sedan."

Assuming there is demand for battery swaps, as the install base grows, this will almost certainly drop.
What problems are simple and random? can you give some examples to prove your argument?
How we used Tinder to catch the thief robbing startups in SF