skysight-inc/HackerNews huggingface dataset:
>Peak temperature lags peak solar by several hours, most energy intensive industries run 24/7

Energy intensive industries were only built that way because it matches the output profile of electric grids pre-renewables. You usually had a coal or nuclear power station that delivered the same amount of electricity 24/7.

Energy intensive industries are already (in Germany at least) adapting to match their demand with the electricity spot price. There's nothing inherently that difficult about an aluminum smelter matching its highest production rates to when electricity is cheapest.
Publish and Perish: The Death of Stefan Grimm
Comparison of the Go and Erlang concurrency models (2011)
> Normally, I have nightly backups to iCloud, but since they are (unfortunately) not as thorough, I made a full local backup to my MacBook, and restored it on the new iPad mini with Retina.

Sounds like he made an effort to preserve his files. I know from personal experience how easy it is to mess something up with iTunes and lose all data. Like when the iOS 8 upgrade failed and the only way to unbrick the iPad was to reset it through iTunes.
It absolutely amazes me that there are so many anti-consumer people here.

Apple is not a SaaS, IaaS, or PaaS. They produce tangible goods that consumers own. Outside of violating state or federal laws, including the Computer Fraud and Abuse Act, you are legally entitled to do whatever you so choose with your property.

Why is everyone okay with Apple dictating what you can or can't do with your property? You paid for it, and not just for a license. It is YOURS, why are you giving up your rights?

If Microsoft only allowed you to sync one Email account in Windows, would you still go "well, I don't know why you'd need multiple accounts, you're stupid if you do".

Does everyone here tell their customers "tough luck, I guess try to get around that "feature"'?

The only reason apple does this is because they sell music. If they didn't, there would be absolutely no incentive to put these types of constraint on a consumer device.
I found myself in a similar situation about a year ago and while I've made a lot of progress I still have a long way to go. Here's what I've found useful:

Precalculus, Coursera, https://www.coursera.org/course/precalculus

"Precalculus Mathematics In A Nutshell", George F. Simmons, http://www.amazon.com/Precalculus-Mathematics-Nutshell-Geome...

"The Hitchhiker's Guide to Calculus", Michael Spivak, http://www.amazon.com/Hitchhikers-Guide-Calculus-Michael-Spi...

http://www.khanacademy.com

http://www.reddit.com/r/learnmath/

http://www.math.stackexchange.com
Apple can say they don't automatically copy over songs purchased in another region. Allowing you to "purchase" the songs again for free sounds like a workaround that the parent found. However you look at it it's not for the good of the customer.
This stuff is very confuse, and it confuses all the HN commenters even more.

There is no such thing as a datacenter OS.

Simplification: An OS is a kernel and it's associated base software.

The kernel drives the hardware. You need to talk to disks. Memory. what not. Kernel is needed.
You need to talk to the kernel and tie these components together. You write software. Boom, you have an OS.

A datacenter isnt a disk and memory and devices. its a bunch of computers which themselves drive these devices.

If you invented a "datacenter" with a bunch of disks and an API to drive them, then a bunch of CPUs and an API to drive them, and so on, you'll end up with a supercomputer and a single, unreliable, unsafe OS (which is exactly why nobody makes super computers anymore. They make clutsters of computers. Cheaper, more reliable. Clusters. Ie... datacenters).

The only thing that could be needed is a universal API for resource access. Need a db? Here's an API. Need disk space? Here's an API. and so on.

This is exactly what AWS is and does. S3 doesnt expose the OS. Its just a filesystem API.
ELBs arent an OS. They're a load balancer API.

It turns out that below that, there's an actual traditional OS because thats the way it works reliably.

You have other ways to interconnect these systems in smarter ways (see plan9) but its always running a "regular" OS in the end, too.
Also the "if it wasn't for me you'd still be four guys on a toy project" quote.

Doesn't seem to be connected to reality. I've heard of Fossil and sqlite, but never of Shaw, who apparently wasn't even a commiter.
> Most likely, he didn't actually sync the music to the computer, so the computer didn't have the files in order to sync back to the device.

Quite the opposite. I had the computer before the iPad mini, and all music is on it. In fact, it still has the music.

I did a full backup and restored on new iOS device, and this brought back everything (apps, settings, contacts, etc.) except the songs.
Thanks for the feedback -
We're working on extending our examples at the moment. Is this the kind of thing you would be looking for? http://community.warewolf.io/topic/544566-backup-solution/

Thanks again!
Bots are equal, but separate.
>It's a moot point because negative electricity prices reflect producing more than is necessary, the reason why it's negatively priced is because it's being generated at the wrong time (which is the stupidity of solar, it works best when there's less load)

This is simply a new market reality that electricity consumers have not quite adapted to yet.

http://www.bloomberg.com/news/2014-11-27/molten-aluminum-lak...

... but it didn't take them long to respond.

(Efficient) markets take care of this kind of thing. They're really good at it. It's stupid to keep pretending that they don't.

The only reason why it works in Germany and not, say, in the US is because the corporations that run the grid in the US are also producers and they are more interested in milking their monopoly than actually improving their networks.

Similar to how Comcast refuses to upgrade their networks.
I was going to at first, and I'm guessing it's likely they would've been able to assist in some way, but then I just didn't bother to.

To be honest, it was easier for me to accept the loss and just move on. I don't listen to music that much anyway, and when I do, I can just stream from Spotify or YouTube.
I am also interested in getting better at math, especially algorithmic type of math. I though about playing TopCoder arena, which focuses on algorithmic problems and often requires a lot of math. What do you guys think about this approach? Is it realistic to solve those problems with google as primary resource of knowledge and get better at algorithmic math?
OT, but for the uninitiated who you enjoyed the above and didn't know him, the James Mickens USENIX column is absolutely hilarious and insightful.

Other examples can be found towards the bottom of his MSR page[0] (search for "humor").

[0] http://research.microsoft.com/en-us/people/mickens/
A NATO FOIA request, answered ten years later (2013)
Racket (and precursor Scheme for academic reasons) is the Lisp I've interacted the most with besides Clojure, so I never really considered the perspective of a stdlib being so valuable. Clojure->Java and ClojureScript->Js have always seemed super awkward to me, and having a similar naming style could be a great feature.

Still, I'm reminded of Greenspun's tenth rule when reading about this project. Hopefully it will become a popular and well-supported option in its own right.
Firstly my training is not primarily in USA FCC regulations, so the terminology will vary. However the basic principles still apply, as all of this derives from the international ITU agreements.

The sources you link to refer to radiated emissions from non-transmit devices. All electronic equipment which is marketed requires a whole slew of Compliance testing.

This covers things like standards for connections to Power or Telephone, as well as Radiated and Conducted Emissions and RF Immunity. Various classes of equipment (eg Commercial, Industrial, Military, etc) have different standards to meet.

Part 15 makes some exemptions for low power Domestic devices. But you still require Type Approval even under Type 15, it's just that the requirements are somewhat relaxed.

If you are an approved developer, you are covered for Possession of non-approved equipment during development.

But this has nothing to do with equipment which can transmit. Transmitters require all of the above testing, but also a further round of testing to do with harmonics, stability, bandwidth, power levels, etc.

If you wish to test a non-approved Transmitter you must do so in a professional-grade screened room, or apply for an Experimental License to cover specific Frequencies and Locations.

Years ago an organisation could apply for a blanket Experimental License which basically covered any testing in the organisation. It's main function was to ensure that a nominated individual understood (and was responsible for) all of the relevant regulations. Typically the nominated individual would hold a First Class Broadcast or Marine ticket. More recently these Licenses have been supplanted by limited permits for specific frequencies and locations.

People think that it is fine to transmit on "unused frequencies". The problem is that there are virtually no frequencies which are not allocated to some organisation.

And people often don't realise how an incredibly low power transmission (or harmonic) can block a sensitive Emergency receiver on the other side of town.

I could tell you dozens of stories of clever people who thought they were using "unused" frequencies. Typically they were inadvertently transmitting on the input frequency of an Emergency Repeater and hundreds of users were slowly getting angrier and angrier until the Authorities managed to track them down. When convicted they not only paid large fines, but also the Investigator's costs and the downtime for the company affected.

The reason for the specific permits is that if things do go wrong, the authorities can quickly get in touch and fix the problem.
Good engineers can do dipole approximations in their heads. This would require a computer- there are just too many internal reflections.
I would highly recommend reading:

- A Course of Pure Mathematics (G. H. Hardy). I read this before I started my undergrad in CS/Maths. Free Online.
- University Calculus (Hass, et. al.). This was reading for my first year, and continued to be useful throughout. Expensive.
- A Book of Abstract Algebra (Charles C. Pinter). I read this after my degree, but boy, do I wish I'd had it _during_ my degree. Fairly cheap.
- Linear Algebra Done Right (Sheldon Axler). Moderately priced.

I can't remember which of the texts I had on Number Theory were good at this point, but I do remember that it was quite hard to locate one which was tractable. There's a whole heap of fields which I chose to avoid (woo for joint degree!) but now I kinda regret it -- although I wouldn't have easily given up any of the comp. sci. modules I did...

I would always recommend working through Hardy first, regardless of what else you do.

I don't know of any good websites for this stuff. You may be able to find reading lists on public-facing university module/course web pages, which will help bolster this list.

It may be cheaper to buy access to your local uni's library than try to buy all of the above books. The uni I attended is around £70 a year for a non-student.

Your best bet is to get a notebook and the book that interests you most and work through that book, then the next, and so on. If you get stuck, as someone with a maths degree what the heck's going on :-p
No, I don't think MetaMath is the kind of thing the OP wants. Sure, it builds mathematics from "first principles", but not in the same meaning as the OP means. When you read his question, "first principles" really mean "as a beginner".

Although I like how MetaMath brags about how easy it is to verify proof by yourself if you're not a mathematician, in the end I don't think it's useful for any people but math-oriented in the first place. It's not going to explain the meaning behind the math (it actually intends to take rid of the meaning) and certainly not solve daily problems like antenna design or machine learning. I rather see it like a collection of theorems declared true by a computer following dumbly (I mean that in a positive sense) a substitution rule and base axioms. It's another kind of beauty.
Unfortunately, the link does not go into any detail and there is no reference to the source. I've heard about "apparent adaptations", but never specifics. So not sure they do exist.

Researchers who lived with the Inuit (Vilhjalmur Stefansson etc.) did not have any problems following the Inuit diet.
Another good list of papers from my alma mater

http://www.cs.rice.edu/~alc/comp520/schedule.html

This class on networking has a great list of papers as well..great for understanding the systems which distributed systems depend on as well:

https://www.clear.rice.edu/comp529/www/list.html
"Or that the company spent half a million this year in severance costs to terminate employees?"

That's not much. Is Wired trying to make me think that is a lot? Or are they trying to play it against the salary figures? Considering they spent valuable words in the first sentence to make it clear that the top brass is "mostly" white males I get the impression the comparison was supposed to mean something.
I have just one account. I changed it from Canadian store to US store.
Ask HN: Any Suggestions for Scholarship Application Management System?
Hello We are looking for a simple scholarship application management system. We would like to convert our paper based scholarship program http://www.svec.org/scholarship-awards.html to an online system with an easy-to-use selection interface and convenient data collection/export functionality.
One system I am thinking is

I can setup my self an online system based on google forms (for this student has enter his form by logging with his gmail account, references also have to fill the recommendation letters by logging with their gmail accounts).

The review can be managed online-as I can give the read permissions for these documents for all the reviewers.

Any suggestions or alternatives to google forms based system is appreciated.

Kiran Gunnam Chair, Silicon Valley Engineering Council http://www.svec.org/ https://www.linkedin.com/in/kirangunnam
This is a quick read. It's a screed about Wikipedia periodically begging for money. Good food for thought.
http://google.github.io/physical-web/

URIBeacons are the future. You don't need to point a camera, it's invisible and works great.
>Those downvoting seem to be seriously hostile towards consumers.

There are just lots of Apple fanbois on HN, nothing more than that.
I found "Mathematics for the Millions" (http://www.amazon.com/Mathematics-Million-Master-Magic-Numbe...) to be a very interesting read. It goes through the history of math, how it was discovered and used, from ancient Egypt (geometry) to the 1600s (Calculus) and shows the progression of thought.
>Linear Algebra Done Right (Sheldon Axler).

Thanks for this , i had been trying to read G. Strang's one and this one seems to be a more compact refresher on the course!

Could be b/c of my level of knowledge but to follow Strang's one to begin with , i had to watch those MIT lectures online in the begining.
This REALLY gets into my nerves

Interview like candidates are a dime a dozen, then come whine about not being able to find good candidates
How accurate is Google Maps for travel times?
You seem to be ignorant of what real-life presidency prerequisites are (as opposed to formal ones) if you consider millions of people as possible candidates...
If Google were to reliably accede to your request, sure. If it was just a question of filling out a form, sure. But if there's a single hiccup, you're lost. You are completely dependent on Google's goodwill. They have no incentive to destroy records? They don't, but Google has no incentive to comply with individual requests either. Have you tried to reach Google customer service lately? Oh wait, they don't have customer service. Or they sorta kinda do, if you're buying advertising.

But the issue is greater than just Google--the issue is the disposition of digital assets after death. Why should digital assets be treated differently from any other asset? If you think that banks gleefully return money to a decedent's family after death you haven't dealt with this issue much. Having the power to issue court orders tends to enforce the rights of the heirs.

Or you can just hide from those terrible lawyers, mail forms to Google (or e-mail them, everyone knows e-mails always arrive) and hope for the best.

I hope it works out for you.
No, I will not stop. The amount of value I receive from Wikipedia directly is hundreds of dollars a year (subjectively of course). And I suspect the value I receive indirectly, through better access to information for the current and future engineers, doctors, scientists etc is many times greater.
Very impressed. Solid knowledge demonstrated. The blog makes it seem so easy, but imagine the years of trial and error needed to produce this knowledge (which of course the author gets "for free")
And written by a self-styled competitor.
http://en.wikipedia.org/wiki/Sony_BMG_copy_protection_rootki...
China Stock Surge Stokes Fears of Risks
They are also blocking sites that have references to virtual (drawn or CG) molesting like danbooru or chan.sankakucomplex nowadays. I.e. this bullshit stepped into domain of thought police already. And a thought police is a certain "Nope!" sign whether it is for good (awareness) or not.
The North Korean theory seems silly. In fact, it's exactly what I might say publicly if I were Sony and I wanted to try and turn lemons (being hacked) into lemonade (free buzz about an upcoming movie). The movie Kim Jong-un doesn't want you to see!

In the end, I doubt there was any hacking involved at all: a disgruntled employee leaked documents. Perhaps Sony forgot to disable someone's password after giving them the axe.
From another article I saw [1] it appeared that there was half a million spent in severance for a single employee. Others were listed as well, in 100k range, and the article author left out the names of the employees.

[1] http://fusion.net/story/30850/
I like some of the ideas in the CLI (live reloading on both platforms, live dom editing etc.), but indeed this is very much Ionic + Firebase-like 3 way binding bundled into a nice packaging.

Not sure I see the benefit vs. Ionic in itself to be honest.
I like AppGyver - however when I try to run their Scanner app in the iOS simulator it seems to reload itself (even without file changes) relatively often. Is this intentional?
In the UK we already have rules that stop that sort of thing, for instance if you use a company owned vehicle for personal use you have to pay tax on that. You also have the fact that these avoidances are local so are easier for the tax authority to stop.
Related: http://www.theverge.com/2014/11/19/7245069/adult-swim-infome...

'Smart Pipe' is every bad startup in one delightful parody | The Verge
In the AtScript, there is nothing out of the Dart (0%).

AtScript composed entirely of TypeScript (100%).

AtScript is superset of TypeScript.

Dart there and does not smell.

https://www.youtube.com/watch?v=lGdnh8QSPPk#t=1734

=====================

AtScript: Google’s new superset JavaScript runtime

http://sdtimes.com/atscript-googles-new-superset-javascript-...

AtScript is designed to run on top of not only ECMAScript 5 and the upcoming ECMAScript 6, but atop Microsoft’s superset TypeScript language as well.

=====================

Dart has the same relative to AtScript, as to the TypeScript.

That is no relationship and no communication between them.
"Pastebin—the unofficial cloud repository of hackers everywhere"

Are they referring to "http://pastebin.com/" ? if so is it really "the unoffical cloud repository of hackers everywhere" ? Is it really used often by hackers?

I thought reddit and 4chan are the more popular places to dump illegally gained information.
>"illegal GPS receiver"

illegal where? for sale in US? I'd not be surprised that GPS gadgets produced in China for US market are just loaded with different version of firmware containing those limits while the same gadgets going somewhere else - with no limits firmware, or may be with even stronger limits (until pretty recently many "US legal" consumer GPS gadgets were illegal in Russia for being "too precise" :)
Smells like an inside job.
Code base !== One repo. I agree for some projects this all-in-one system might be beneficial, I'm saying personally I would expect teams to use standard tools for tasks. A wiki and ticket system that works the same regardless of the type of repo you use.

Im looking at this from the point of view of providing infrastructure for teams to work on different projects. A project does not necessarily mean a single repo.
FYI, this is what's been eating into my Clojure output. The Hy REPL starts up instantly and the interop is so good I find myself writing small projects in Hy instead.

Here's a wiki implemented with it (demonstrates using Bottle, doing URL routing and few other things): http://github.com/rcarmo/sushy
...and here's a little playground with various snippets of code: https://github.com/rcarmo/hy-there

...and a feed fetcher: https://github.com/rcarmo/mqtt-feed-fetcher/blob/master/main...

...and a prototype for a nicer REPL: https://github.com/rcarmo/hyrule

Edited to add: The killer feature here is cross-interop: I can re-use my code in either direction (and have run Hy in PyPy, IronPython, etc. -- sadly, not in Jython yet)
Buy this. - Getting Started in Electronics - by Forrest M. Mims, III. - http://www.w5yi.org/catalog_details.php?pid=34&sort=21

It is thoroughly excellent and the electrons all have little faces.
Sure, right from the axioms.
And DDG makes it super easy to search google with a bang:

"!g hacker news"
Very excellent argument against C macros in any case.
I too remember it being pretty harrowing at the time (if only because it felt like we were alienating [har] such a large chunk of our community), but in fairness it happened barely 6 months in. It all happened in a couple of weeks of quick work and I seem to recall we even recycled the db schema.

We did a post-acquisition python-to-python rewrite -- clean out the cobwebs, switch frameworks, and redo the database schema -- which was much harder, longer, and more painful to deploy. Though in that case it was one of those drastic changes whose primary side effect was that no none notices a thing.
That explains why my hand is on fire.
i started migrating a project from clojure to common lisp so that i could move the ui from swing to qt. i should really give hy + pyqt a try as well.
Work is already underway with this, I believe.
I don't understand. I thought Ionic was AngularJS + Cordova so how can it be "Ionic + AngularJS + Cordova"? What is this exactly?
Very common.

https://www.google.com/search?q=pastebin.com%20email%20and%2...
I honestly couldn't tell what he meant, whether he had stumbled through calc 3 and gotten sick of memorizing arbitrary rules, or if he can't solve a quadratic.

I tried to include some good high-school level math resources.
I'd start with Discrete Mathematics before Spivak. From what I remember, Spivak jumps in to constructing the reals out of set theory pretty quickly.

A discrete math text will drill you over a lot more basic proofs involving set theory that would help in understanding his construction.
It's no different from Microsoft changing DOS until Lotus wouldn't run on it. I'm amazed at how many people will defend everything Apple does.
I wasn't aware that you'd need a license while developing an intentional radiator (what you're calling a Transmitter, I think). I'll have to look into it.

Thank you for that information.
Yes, and coal mining equipment is kept in air-conditioned rooms and carefully kept in pristine condition by people wearing silk handkerchiefs?