skysight-inc/HackerNews huggingface dataset:
My impression of the Chelyabinsk meteor was that it fragmented significantly about 14-15s after first appearance. This would have greatly increased its surface area, and likely wasted a significant portion of its kinetic energy at that point. So the power delivery curve wouldn't be completely smooth or continuous.

That said, a nuclear device delivers virtually all of its energy as ionizing radiation (5%), thermal pulse (30-50%), blast (40-50%), and residual radiation (5-10%). The actual nuclear reaction takes less than 0.5 milliseconds, the thermal radiation pulse generally lasts several seconds, more for exceptionally large weapons (e.g.: Tsar Bomba, 50 MT).

The distinction between total energy delivery, and rate of delivery, is key. Gunpowder and TNT are actually significantly less energy dense than kerosene, but release that energy much more quickly. The destruction of the WTC towers in 9/11 was the result of aviation-fuel driven fires burning in a structure for many minutes, rather than a single explosive pulse.

The mode of energy delivery also matters. For a meteor, the principle delivery is heat, light, and shock. With nukes you've got both ionizing radiation and fallout to be concerned with (generally 10-20% of total energy).

This is also a point I raised regarding financial market collapses, when a professor tried to point out that the stock market had survived 25% declines before the 1987 crash. Sure, but over time. Would you prefer going from 60 MPH to zero in 4 seconds or 0.06 seconds (about the time it takes your seat front to find the front bumper in a static-barrier impact)?
I went the static site route (shout out to Blogofile (http://www.blogofile.com) because I didn't trust anyone but me to run my server and I got tired of running Wordpress and Drupal myself. I paid NearlyFreeSpeech.NET $20 a year ago to host the static files and have about half that still credited to my account.

OK, it's not for everyone. Initial setup certainly wasn't for the faint of heart. But it was fun and replacing my host is as easy as finding another cheap host for text files and jpegs. It was worth it to me.
Well, it looks like I'll be getting 10 minutes of work done I didn't plan on doing.
A better option might using a service like UStream. Download their app, set your channel to private, and when you drive places, start your broadcast. I believe they automatically archive anything you livestream, so if something happens and the phone is destroyed, there's still a record of what happened. And it wouldn't fill up local storage.

With an Android phone, this might even be scriptable using something like Tasker. Set it up to automatically start the streaming application as soon as the GPS records you travelling a speed over a certain limit, say 10 mph/20 kph.
The Trials and Tribulations of a Global Startup
I'm female and I have my toe in that industry. I am not in the skin trade, but I am in a position where I have a bit of exposure to it.

1) Yes, most porn focuses on the male's pleasure, which is a common complaint. That's why James Deen makes money: http://www.slate.com/blogs/xx_factor/2011/11/17/porn_that_wo...

2) Yes. Some women are into that. I feel like you are unnecessarily close-minded about the idea that women might like a range of experiences. I also agree with other commenters on their ideas that naming porn conventions do not actually indicate suffering, pain, and degradation.

3) True. Porn is not meant as educational material; be safe.

4) It does create unrealistic expectations, but almost nobody expects porn to be like real life.

Female porn stars do get to choose what kind of sex they have. I hate victim blame just as much as the next woman, but saying that porn stars can choose what to do is not victim blame. Porn stars live in a world where they get paid for what they decide to do. The skin industry does have some people who are not there by choice but necessity...but the vast majority are there because they chose to follow that route. Though I think concern for the performers is admirable, most performers are ok with where they are. It's actually a little bit ridiculous that men get up in arms about women when they choose to go into the industry; it's a mostly free choice. Men act like the performers can't like what they do, which is wrong. http://goodmenproject.com/featured-content/its-a-lap-dance-a...
Jacob Appelbaum's 29C3 keynote on the out-of-control surveillance state
Might help in the event that something happens to both of you and users are left on a ghost ship of sorts.
oh dear :/
A Detailed Solution for Managing SQLite Databases in Android
If you write single-page web apps, you owe it to yourself to check out Ember.js. The learning curve is a little steep, but once you get up and running you can't beat it for a client side MVC.
Sex Toy Companies, Sex Toy Industry at Uxtoy.com
A PC is actually different from an S Corp! I haven't read the article yet but felt the need to reply to this. States also don't have S-corps, they are a construct of the IRS and an LLC or a C-corp can elect to be taxed as an S-corp but it doesn't change their legal entity form. The shareholder limit is 100 and there are a few other nuances but the general idea is that you can elect for your corporation to be taxed as a flow through so as to avoid double taxation.
Asteroid 2012 DA14 as it travels within the Earth-moon system on Feb. 15
Thought this should be posted ... in case nobody else has. NY Times replies to Elon Musk:
http://wheels.blogs.nytimes.com/2013/02/14/that-tesla-data-w...
So, Facebook invites Obama to their HQ to give a "townhall", then many of their execs contribute heavily to his campaign, and then Solyndra, er, Facebook gets a massive tax break. This is one of the many reasons why I, too, have made Obama a secular substitute for Jesus and anti-racism an easy-to-satisfy substitute for a more rigorous personal morality.

In other news, Facebook co-founder Chris Zell has purchased The New Republic magazine and turned it into magazine so pro-Obama that even its former owner, Martin Peretz (himself an Obama supporter) has attacked it.

http://pjmedia.com/ronradosh/2013/02/14/the-new-new-republic...
MRI magnets are a pain to setup. It's not an easy task.

I can remember when the NMR (superconducting magnet as well) in our school "quenched". It's a hell of a lot of current to dissipate.

Need to get some tech from Germany to come out and power it back up.
You can elect for your LLC to be taxed as an S-corp for free. Just a few forms to file with the IRS.

There are many considerations so talking to a professional is always a good idea but remember:

LLC = Lawyer's Likely Choice
the best advice i can give you after answering so many tax questions in HN is to ask a professional... especially after reading this =)
I'm curious about the need to build this from a new code base. Posterous already exists. Why not negotiate a deal with twitter to aquire the code and start posthaven from that? Indeed, why not also aquire the posterous domain and just migrate to new servers? Put all existing blogs on lockdown, and if people want to continue as posterous customers they start paying $5 a month.
Wouldn't security be an issue?
Well I didn't say it's the same kind of architecture. For the end user it serves the same purpose however.
Free Society and Commerce
congrats , Ember.js is a great framework , definetly my first choice for writing complex web apps.
You're speculating, but you're wrong, FYI. You're also wrong that the PoC requires a patch to work. That's just to make the window gaping and foolproof, basically.
FTL is one of the games you shouldn't buy on steam. Buy it in the humble store: http://www.ftlgame.com/
Or just gloves instead of implants. So you can take them off, but still get the benefit when they're on.

I don't see why it isn't possible.
Humans learn by playing
Can I propose (not too seriously) that a fifth hour each week be set aside for proof reading? ;)
My router at home blocks Reddit and HN except from 5-7pm and 11:45-midnight (and all day Saturday). Worked amazingly well to cut back the addiction. Now if I could just get HTTPS blocking to work on FB and Twitter.
> Pretty obviously joking.

The problem with trying to sound so stupid you can't possibly be serious is that there are people who are seriously that stupid.
10 steps to build a succesful mobile app
Not one of these?

http://ed-thelen.org/comp-hist/vs-bendix-g15.jpg

[one of the first computer models I ever wrote for - a three address machine: first a source operand, second destination, third address of next instruction. The memory was a rotating drum]
"Punish them"?!? Give me a fucking break. How entitled can you be?

I'm not being colourful when I say "frat kids". They literally had frat kids "guarding" the exam to ensure that nobody entered. I reject your implication that I have any obligation to engage in honest non-anonymous discourse with groups like that.
--> You must be running OS X 10.8 (Mountain Lion). :(
Or borrow from 1 or more countries defense budgets.
I can't believe no one has mentioned XMarks.com I've used them for years. Can't imagine using anything else.

I keep a minimal amount of bookmarks, only ones I visit daily.

For archiving, I use Kippt.
Are there any good malware scans for Mac? Obviously it's not going to prevent a novel attack, but I'd like to see if I'm infected with this or other known attacks.
"You can do..."

How about I do nothing except take my exam as normal?

Oh no, that would be a dick thing to do. Actively subverting them... by taking an exam in a class they also happen to be enrolled in... Pure entitlement culture.

If they ask, they won't fuck themselves over. If they don't ask, they will fuck themselves over. They are responsible for what happens to them. As long as they do not ask me for my input, I have no responsibility for their actions.
Smart Learning Tools
I listen to cool jazz. It puts me in a state of bliss and I can power through any task in a timeless sort of way.

http://www.pandora.com/music/jazz/cool-jazz
I was thinking it might be the actual sound of the disintegration. It doesn't sound like echoes to me. And, obviously, it is only just arriving, straight after the shockwave.
> Yeah, I hate Java.

What about C and C++ induced security holes?
Also, people underestimate the power of serving out of RAM. It's not unreasonable to serve 20-30K QPS off a single server if the work it needs to do is limited to minimal request parsing and fetching some data from main memory. That's about 2.5 billion requests/day, fully loaded. Granted, I'm thinking something more like memcached than a fully-formed webserver, but an in-memory webserver that stores its data in hashtables (like news.yc) and has a really fast templating languages, or just writes output directly to the socket, could probably come close.
Do you have C and C++ dynamic libraries installed instead?
What do you base those technical claims on?

Our numbers show asm.js can be 2x slower than native or better. That's not "not fast". And, even without asm.js optimizations, the same code is 4x slower than native, which is as good or better than handwriten JS anyhow - which is not "incredibly poorly".

If you have other numbers or results, please share.
He was legally in the right on PACER and got ridiculously harassed over it. Why wouldn't he want to hide his identity when doing it again on JSTOR (where he was still legally in the right).
I started applying to YC back in 2005. That's why it was six times between 2005 and 2011. I wrote it assuming you already know what the benefit of YC is and want to get in, or that you know, but are on the fence about it.
Does a single server support this level of traffic? That is pretty impressive - it would be great to learn about the server's hardware and software configuration.
There is an in-depth comparison of two frameworks: Backbone.js vs Ember.js.

Link: http://net.tutsplus.com/tutorials/javascript-ajax/game-on-ba...
Plain ignorance.

Many don't even make a difference between Java the language and Java the VM with all its multiple implementations from vendors all around the World.

This security exploits most of the time are only relevant to Oracle's VM.
Heroku cops to poor tech performance for last three years
Well. If the meteorite was partially composed of water, which was then vaporised off during the atmospheric ablation, then it might indeed be partially contrail!

A pure water meteorite hitting the atmosphere would be contrails all the way; just not in the way we're used to.
Cornering the market on neighbor networks?
Can't beat it? It's good, but Angular.js is definitely a front-runner.
This is a good thing, mostly because the concept of 'reputability' is not very viable.

A third party is reputable as long as it is 100% objective. And there is no such thing as 100% objectivity in human world. Everything is relative. Reputation of third party will be questioned and tried every time third party publishes questionable information, which is every time.

I would rather have two distinctly biased parties with clearly established interests publish their stories, and then I will be the judge on whose story is right.
RT privilege is not a prerequisite to this exploit, it only makes it 'easier'.
I think if we're going to start this debate that we need to substantiate the claims on both sides. This is probably not the ideal place for that debate, however.
Heroku Blog: Routing Performance Update
Browser plugins are bad and should be eradicated.

But that is only half of the way, because thanks to C and C++ runtimes, they are still open to security exploits triggered by buffer overflows, strings misuse, use after free, double deallocation, array access out of bounds, stack overflow, pointer misuse...

The only safe way is to use a separate VM for browsing, or failing that, run the browser under a different user account with limited user rights.
So will they return the extra money that this has cost customers?
Man, that was funny!
they are very differnt , DI is great but all the directive lifecycle pisses me off sometimes. and dirtychecking on huge collections? without a native Object.observe it is slow.
http://www.nature.com/news/russian-meteor-largest-in-a-centu...
would love feedback.
Mathematica Minecraft
I am sure the author of this article intended to help others make wise tax/entity formation decisions but many of the facts mentioned are just incorrect (tax rates and some general tax concepts). C-corps are fairly uncommon nowadays and for good reason You are almost always going to pay more tax in the C-corp and you will face built in gains issues when you realize this and decide to elect to be an S-corp.

The tone of the article seems to be slightly rushed and frustrated and leads me to wonder if the author just received unexpected news from his accountant.

One example:

Using 2013 tax rates and assuming that the taxpayer is single:

Individual Federal income tax on taxable income of $90,000 (ignoring personal deductions/exemptions/itemized deductions, etc..) that the example taxpayer in the article might have to pay if they were a 50% partner/member in an LLC:

Roughly $18,493 (less than 21%)

Corporate Federal income tax on $100,000 if you and your partner had a C-corp instead and took 40k salaries then left $100k in the company.

Roughly $22,250 (About 22%)

But then if you end up not spending that money because you made a boatload of cash the next year and want to take it out:

$3,337 (15% capital gains)

leading to a rough total of $25,587 (over 25.5%).

You might look at this example and say "hey that's just a few %" but as the income in question grows, so does the gap.

Edit: The real reason startups might end up as corporations is for the beneficial tax treatment investors can receive as holders of small business stock (1202, 1244).
How do you know he wasn't working on his companies WHILE he was applying to YC?
On the contrary, I'd love to hear the debate! If not here then where?
Why not YUI? I'm so confused at the proliferation of these JS frameworks where everyone literally keeps reinventing the wheel.

Excellent as a learning exercise but other than that, what's the point? YUI has been around for so long compared to these. It's mature, it's under active development, very well documented, it has the option of including so many more things if you want, it's modularized,has a devcon every year, releases architectural videos every so often, has a dedicated CDN.

Why do you still pick ember or backbone or ...?
Things like this make me extremely wary of Angular's DI: http://www.alexrothenberg.com/2013/02/11/the-magic-behind-an...
you never saw the domain name?
At the risk of linking to myself:

http://news.ycombinator.com/item?id=5218226
Meet singles, get a date - Meet Singles, Get A Date
Good news for browser centric thin clients/devices, I suppose. There was a lot of criticism of devices, particularly Chromebook, that rely on the cloud; that you're fairly limited by what you can reach via the browser. Well, it looks like you can reach a lot more now.

I hope we can look forward to getting rid of pointless apps that are forced on you just to read a web page though. That's really, really annoying.
One problem with the reasoning in this article: reinvested earnings usually don't sit on the company's balance sheet as cash -- they're reinvested into the business as wages, advertising, and other expenses, all of which reduce profit (but increase long-term enterprise value).

If you own a lot of proprietary IP, go with the C corp, otherwise if you're running an asset-light cash business where most of your revenue flows through to profit or pays short-term expenses (e.g consulting), a pass-through entity (LLC/S Corp) is probably better.
Here’s the snag. If you are using a pass-through entity such as a LLC or S-Corp that money you are leaving in the company (retained earnings) is personally taxable to you in proportion to your ownership of the corporation.

LLCs and S Corps can be taxed like a corporation and not as a pass-through entity.
This is a great post on why one project chose Ember: http://eviltrout.com/2013/02/10/why-discourse-uses-emberjs.h...
For what it's worth, it's not clear how Object.observe will substantially improve the performance of large collections.

For example, if you insert an item at position 0 of a 10,000 item array, Object.observe will publish a change for every item (since they are all moved one item down). It is then up to the receiver of those changes to reverse engineer what exactly happened (which is slow).

What is needed is Array observers, which would notify the index of the change, number of items removed, and any items added (the `splice` signature). Ember emulates this, but by using a different API than the normal Array API. I hope that future extensions to Object.observe will support Array observation.

As a member of TC39, I worked closely with several members of the Chrome team on Object.observe and hope to work with them again on an Array extension to the spec to make Array observation faster. I yearn for a future where Ember can get good performance without having to ask our users to use an alternative API.
> I'm sort of confused with the obsession some people have with applying to YC.

Reading HN will give you a skewed perspective. This site is literally and by design the HQ for YC applicants, alumni and fellow travellers. A lot of those fellow travellers worship pg.

Read the comments whenever a new essay is posted. Lots of /r/cringe material.
Keep in mind that a single modern physical server that is decently configured (12-16 cores, 128GB of ram) is the processing equivalent of about 16 EC2 m1.large instances.
http://xkcd.com/725/
Ember.js or Angular.js?
Which is best overall? Which is best in certain common situations? Which is most enjoyable? Which is more maintainable? Why not ember? Why not angular? What are common "gotchas" for each framework?
here: https://news.ycombinator.com/item?id=5230636
Poe's Law [1]

[1] http://tvtropes.org/pmwiki/pmwiki.php/Main/PoesLaw
My Favorite Email
Recent Fundraising: Virool, PagerDuty, 42 Floors, Cloudant
Elon Musk vs The New York Times
This is a good post on why Discourse chose Ember: http://eviltrout.com/2013/02/10/why-discourse-uses-emberjs.h...
With all due respect, this article really isn't that great.

Here's the real difference, stated succinctly:

LLCs and S-corps are pass-through entities that aren't generally subject to regular corporate income tax like C-corps are. (But there are exceptions, like NYC, which taxes S-corps as if they were C-corps.) Additionally, C- and S-corps can issue stock to owners and investors, while LLCs cannot, but S-corps are restricted in various ways that C-corps are not, like not being able to issue stock to foreign investors, having only one class of stock and no more than 100 stock owners.

VCs and Angels will not invest in an LLC, and the process to convert an LLC to C-corp is (or was, last time I checked) difficult, typically involving the formation of a brand new C-corp that buys the LLC and then dissolves the assets of the LLC into itself. I believe Joel once mentioned that FogCreek went through this process years ago, and it was not very pleasant. By contrast, it is trivial to convert an S-corp to a C-corp with one form (IRS Form 1120).

If you ever plan on issuing stock or taking outside investment, start out as a C-corp or S-corp. If you plan on running a business that won't (or can't) issue stock or accept outside investment (like a law firm or medical practice), then form an LLC.
How does this work for proprietary software, or stuff that requires installation keys or authorization? Say Office 2011 or sublime text 2 or some other paid app (whether in the app store or not)?
Facebook is taking advantage of a long-standing loophole in the tax code, not the President Obama Decrees Special Breaks For Buddies Act of 2013. There is a story here about the insidious influence of major corporations, but it's considerably more nuanced than the one you're pitching.
Ah, thank you very much.
> "... but until this week, we failed to see a common thread among these reports."

So Rap Genius, a customer, was able to figure out the issues (from the outside looking in) but Heroku, "on the inside" wasn't able to figure them out?

Or they're playing the "we didn't know, we're going to fix it right away" angle?

EDIT: also, s/failed to/did not/ makes more sense. "failed" implies they tried.
Our documentation recommends the use of Thin, which is a single-threaded, evented web server. In theory, an evented server like Thin can process multiple concurrent requests, but doing this successfully depends on the code you write and the libraries you use. Rails, in fact, does not yet reliably support concurrent request handling. This leaves Rails developers unable to leverage the additional concurrency capabilities offered by the Cedar stack, unless they move to a concurrent web server like Puma or Unicorn.

So, do/will they now recommend Puma/Unicorn over Thin?
Assuming you have zero revenue. If you have zero revenue in a retail business, wtf.
If you want a press release to be ignored, release it at EOD on a Friday.
The text at the bottom says this is simply typed lambda calculus, but surely this is untyped lambda calculus.
It's about 6M lines last I checked, of C++ that's not too bad.

How many lines is WebKit? And how crufty or maintainable? ;)
If you want advice from a fellow single founder, mine is not to give out equity. Keep full control and full flexibility. You will save lawyers fees and will do better in the long run. Focus on covering costs and grow from there.
I'm not sure whether I should be impressed, consterned or scared.

It's the sort of things I would love as a developer (Hey ! Portability! Less code to write ! awesome mature toolkits !) and I would never want as an user ( Hey ! It's the same as old Qt apps, except five time slower !).
Node.js 0.8.20 released
Not to be too harsh, but I'm not sure whether "we had no idea it was so bad" is better or worse than "we knew it was bad, but didn't tell anybody" for a platform company. The tone of the post is appropriately apologetic, but this does make you wonder what other problems they're missing.