skysight-inc/HackerNews huggingface dataset:
If it affects peak physical performance, it seems reasonable to suspect it affects peak mental performance (as studies seem to suggest). High functioning executives might get by on little sleep, but would they perform better on more sleep? Are hours clocked more important than output at the executive level?
Thank you for your great insight on the matter, appreciated.
I wonder when will ext4 support file systems above 16tb (limit from 4k clusters with 32bit addressing).
In most cases the parachute is pre-deployed and just hangs above the balloon. Once it starts descending, it inflates as the air catches it.

There's no reason to get fancy about it.
> ... but what textbook says you can't filter a signal ...

i don't think any textbooks makes that claim. from the article: ...a researcher even told the students their idea was "so simple and effective, it won't work," because something that obvious must have already been tried unsuccessfully.
A gentle introduction to CEDET (Emacs source code browsing)
Now that I think of it .. just "effortless supercomputing" would suffice ! Maybe it's just me, but the "cloud" term is so overused now that it has become to mean everything and nothing.

Kudos to you guys on a cool product .. wish you all success !
A graphic designer friend and I are working on a hobby project (startup?) - we meet weekly. Behance to him is like HN to me.

EDIT: He's more into print than web.
Just last night I watch "The Vice Guide to North Korea". If you want to see video of NK from the inside I highly recommend it, really creepy.

http://www.vbs.tv/watch/the-vice-guide-to-travel/vice-guide-...
We can have copyright because the constitution says we can -- a limited monopoly for an artist for his inventions and creations. If that wasn't there, then the first amendment would preclude us from claiming rights over intangible works. Google around and you'll find letters from Thomas Jefferson discussing this issue in depth. Amazingly insightful stuff he wrote.
But at home I have Windows Super Extended Profesional Ultimate Ribbed for your Pleasure edition - that must be better!

Otherwise - very good
Launchbox Digital Picks Youtube To Tout It's Message
> However, if I can choose a large enough regex, I can construct a decider for a given finite language. How then are regexes less powerful than C?

Ok so upon reflection I think I see what you are getting at. Practical computers are have limited memory and so are, in principle, equivalent to a finite state machine.

So anything a practical computer can do a, perhaps ridiculously large, regular expression can also do?

Is that close?
If every pixel takes too long you get nothing; plus you wasted computing power to find out.

A different solution is to cast a sparser set of rays as things slow down, and then use compressed sensing (which has a runtime complexity independent of scene complexity) to integrate the full scene. Then as the scene gets more complex, you get what (visually) amounts to a heavily compressed jpeg.
The much larger signal (local TX) would always capture your RF chain, being that using standard selectivity techniques in the analog domain the unwanted looks exactly like the desired. Being so large, it also would generally saturate your receiver.
I think another good example of this is pg with YC. I don't know of anyone else who has thought as much about starting companies and has such a passion for it.
Seems like the Droid is a success much more due to the Android OS than anything related to Motorola's manufacturing of it.

More like Verizon's positioning and the fact that at the time of its release, the Droid was the most advanced consumer Android phone around and the first credible iPhone competitor.

Before that there was pretty much just the weaksauce T-Mobile G1, and Android was really nothing to write home about.
Very poor article.

Claiming you can do truly multitasking because it has 2 displays is ridiculous, but that's not the biggest issue in my opinion. More of a problem is that whole vision of this tablet is made on old technologies presented in new form. Ooh, they also added pen!

Sort of like best use of radio, when it appeared as new media, would be reading newspapers.
Ask HN: What are the repercussions of a broken passport RFID?
I just recently got a new passport with an RFID chip in it. Obviously, tampering with a passport is a federal crime and so of course I wouldn't do anything like that, but what happens if, through no fault of my own, something happens to the RFID chip and it becomes inoperable? Would I just be processed like someone with an old-style passport, or would they assume that I, despite being an upstanding and law-abiding citizen, broke the law by doing something to my passport to disable the chip?

(We may assume that the passport does in fact show no signs of tampering or deliberate interference with the RFID chip or antenna).
I think, the comma is misplaced in the title.
Charlie and the Apple Factory [video] Steve Jobs Apple Parody
There is the domestika.org community but it is in Spanish :S
The High-Tech Illusion
Sounds sensible. And definitely agreed re: VBA...

> This is a great site btw, lovely logo/design, and a fantastic piece of tech behind it. I could see this being bought by Google and folded in to Spreadsheets.

Thanks! Our fingers are crossed :-)
posting from phone

monads are not for simulating side effects. they can model many things.

functions are already composable with the dot (.). if you want to compose arbitrary structures, use Control.Category.

unit does not have anything in particular to do with monads.

'bind' is specific to each monad and defines its behavior. there is no abstract or generic bind.

the article didn't teach you anything.

ask #Haskell on freenode if you have questions.
Given that he begins that paragraph (where he discusses the new investors) with, "Now the surprise ending..." I'd say you're correct.
If you're interested in a more anthropological perspective on sleep and its importance, check out "Lights Out: Sleep, Sugar and Survival" (http://www.amazon.com/Lights-Out-Sleep-Sugar-Survival/dp/067...)
"It's not for power users." -- Yeah I don't think iPads are for power users.
thanks. Actually the other thing that craigslist and ebay have (other than scale) is users habits so will see.
One more test that newvio is ruing is trying to answer the question of if adsense can balance app engine cost - will report results once I have them - so far free quota.
Creators of Steve Jobs Doll Move On to Zuckerberg
I am in absolute agreement with this. I find that if I sleep more than 6 hours a night, I am actually more tired the following day.

Normally, I get 5 hours per night and I rarely experience low levels of functioning or excessive fatigue.

And as other have pointed out, the methodology of the cited experiment in the article is highly suspect. Any normal human being, locked in a room with no stimuli, is likely to sleep as much as possible to pass the time.
Re: "programmable". What you are saying makes sense. But when I first see a site that says 'programmable cloud spreadsheet' - I don't get that.

Infact, there is a part in me that is still trying to figure out in which problems you are better than Google Spreadsheets and its programming model (even though I understand that you are different from it).

Perhaps what you need to do is talk about the problems that you solve instead of what you are building. This will definitely be helpful when trying to get to product/market fit.

Re: dropping concurrent server support - I doubt that anyone can really tell you what you should do there. You need to experiment. And the answer right now (with early adopters) might be very different from the answer a few months down the road.
A Patchwork of Conflicting Online Privacy Legislation Threatens Innovation
Yeah- in fact, an early mac developer was...wait for it... Microsoft
I liked the bit where they said they'll shoehorn a mobile OS into a desktop just for the hell of it.

I also liked the bit where it was all bollocks.
To me, a pen is an important addition. A tablet should be more than just point and grunt; it should be a tool of expression as well as consumption.

I bought a Tablet PC -- a $1500 item at the time -- so I could do digital art with it. I'd like to do the same with a lightweight and cheap device with a nice battery. Right now I can't because all tablets (except certain Windows tablet PCs) are designed around point-and-grunt (and no, those little rubber styluses aren't good enough).
I need 8 and often more like 9 or 10 hours of solid sleep each night. If I'm well-rested, one night of 6 or 7 hours doesn't affect me, but it can't happen repeatedly. We may both just be outliers.
Last time I looked, all the forms-aaS cheap-o plan response caps were pretty low. I usually just end up going with Google Docs Forms - not as nice, but free and unlimited.
Stop Building Sites In Subfolders
Cool.

One small observation for the About page:

> With that said, here's more about what mean regarding privacy.

Should be:

With that said, here's more about what we mean regarding privacy.
There used to be a humor site named SegFault (see http://en.wikipedia.org/wiki/Segfault_(website)) but it apparently died back in 2001.
Just as Windows on a tablet sucks because it's not optimised for touch, isn't WebOS on a desktop PC going to suck when using a mouse?
sleep_times = [wake_time - 1.5 * x for x in range(3, 7)][::-1]

Is that really all that's happening here?
Sal Khan on TED: Let's use video to reinvent education
More comparisons and benchmarks are available here: http://free.linux.hp.com/~enw/ext4/2.6.36-rc6/
The comma makes more sense if you retain the exclamation point of the original. An addressed person's name (here "Apple") is always grammatically parenthetical, and hence preceded by the comma. The erroneous part is the missing terminal punctuation after the introductory command.
PlayStation 3 seizures: showdown tomorrow between LG and Sony in a Dutch court
Actriz que interpreta madre de Charlie Sheen en serie lo defiende
I agree. Microsoft could undercut HP at anytime with Windows 8, which is rumored to be a tablet friendly OS.

HP should be aiming for web delivery and even their own web browser.
No, it doesn't seem reasonable at all.

Athletic activity causes actual physical microdamage that takes rest time, nutrition, and hormones to repair. The elevated secretion of human growth hormone during REM sleep is a significant reason why athletes perform better on more sleep.

No such analogue exists for the human brain. Mental activities, at worst, deplete neurotransmitter levels. I have seen no evidence to suggest that massive dosages of sleep do a better job of restoring these levels than minimally adequate amounts.
Bullet is nice, but I do occasionally have an experience where it will yell at me about unused eager loading associations when they're not actually unused.

I suppose I could dig into the bullet code a bit, but I've been too busy.

Has this come up for you before?
Patent trolls fatten up on vaguely worded patents
SXSW StartUpBus game heavily addictive
The StartUpBus game provides people with a virtual stockmarket in which they can invest in startups being built in real-time in 48hours.
Very cool! I'd like to see something interactive like this for programming fonts. I've done a little exploration in this space, too:

http://1overn.com/2011/01/31/iterating-on-font-pair-comparis...
This used to be a trickier question, but especially in the ruby world it has a very straightforward answer right now: Resque. Redis is especially amenable to evented clients. So, while there probably are reasonable ways to do an async fork+monitor-a-pipe, the simpler and sounder way to do it in 2011 would be to queue up a job in Resque (or any other "blpop jobs off a Redis list" scheme).
Looking for a new infinitely flexible organization scheme
Except on servers.

Which I guess is due to install disk space issues...?
There are free systems that do this such as -

http://freenetproject.org/

http://oceanstore.cs.berkeley.edu/info/overview.html
Great rec, I actually came upon that a few weeks ago and it nearly made me decide to go with Python. ...Alright I'm convinced.
My friends and I did this twice when we were in college in Oklahoma back in the late 80s.

We ran the balloon line up through a hole in the center of the parachute, which itself was tied off with several strings terminating to a single string tied to the payload. Tests showed that even if a large amount of the balloon stuck around on the string after it popped, it would have a negligible effect on the performance of the chute, basically laying on top of the chute as it did its job.

The balloon itself was call the "Sky Buster" and cost about $35 from a local shop. I had a welding shop at the time, so had access to large quantities of helium. The Air & Gas driver would give helium to me for free.

We did a tethered launch of a video camera first (at those times quite large and heavy) and waited until dusk to launch the balloon without the camera. A modified camera flash was hung below the balloon and had a variable flash pattern programmed into it. If it was going up, it would flash every 15 seconds or so. Coming down, it was like once every 5 seconds. We used that for tracking.

The first time we launched it, we tracked it for over an hour before recovering it 20 miles from where we launched it. Both launches were on a windless night (in Oklahoma a rarity) and once the balloon was at altitude, it clearly started moving with purpose. We lost the second one after following it for about 50 miles.

Back when we did it, we didn't have no stinking GPS or cell phones like these whippersnappers nowadays. Shoot, there weren't even digital cameras! We'd have had to do it with film, if we did it at all.

Great memories, and ones I plan on repeating with my son.
Is general performance okay on the Nook? If Honeycomb works fine minus HD video I'll go pick one up today.
Move Over Apple, My Dell Cost only $400 and I don't understand the fact that you're aiming for an upmarket quality play like usual! Computers are computers, tablets are tablets, right? Just like cars, right?
So that's why they were porting that to Windows. I just hope this won't end up killing WebOS. It was great on the Pre, I think it will do great on a tablet, but porting it to a PC might require HP to take WeBOS in a direction that will be worse for the platforms it was originally designed for.
Smarter Linking Strategy For Stronger SEO | Joanna Ciolek
I use SO regularly. I am not sure where they plan to make their money. I see ads, but I would be surprised if that covers the costs of the labor (I'd love to be surprised
here).

I'm enjoying using it, and I would hate to see it fall over due to overexpansion/lack of cash flow.
Why Executive Support is Important to a Secure Development Lifecycle
Open Source Software Hits A Strategic Tipping Point
"Procrastination and heroic effort at the last minute were the norm."

This may be true, but there are also plenty of students who work from the moment they wake up until the moment they go to bed and still don't have enough time to get all of their assignments done. The problem is that functionally there isn't really any difference between having a 3.5 GPA and a 2.0 GPA, so at some point most people figure out that what they're being asked to do is impossible so they might as well just do their own thing.
In other news, the CueCat was a remarkably inexpensive barcode scanner.
That edition sounds great. You shouldn't have to worry about virus anymore, just trojans.
They put the receiver in a "node" of destructive interference between two transmitting antennas. That way, the transmitting signal doesn't swamp the receiver.
Shortest SEO Guide
I can't agree with you more - on every single point.

Even dumb forms don't work right with ExtJS. One example: there is no sane (or even insane - but documented) way of setting a default option in a combobox, or disabling individual options. Really?!

Seriously if you feel you need to use some big desktop-in-the-browser framework, look at SproutCore, or YUI, or Dojo, or Cappuccino, or....anything else.
I can certainly understand that. My confusion arose from the quote:

> "Textbooks say you can't do it," said Philip Levis, assistant professor of computer science and of electrical engineering.
That's why you date and initial every page in your lab notebook. Don't have a lab notebook you say? That counts you out.
The dual display is sorta neat, and makes me wonder if there's a way to link two iPads via Bluetooth to achieve the same effect?
I've gone through a few potential co-founders. I'm currently working with one on an idea I had, it's going OK... but that's about it. It's really hard to attract quality Programmers, I'd like to educate myself a bit further before I make a serious networking push.

Development has been very slow, and I'm really trying to adhere to MVP and Lean Startup practices. Therefore, I'm going to take the time to learn how to hack some garbage together with hopes of attracting some talent.

I wish you the best, stay motivated!
If you want to have a life outside of school (job, side projects, social life) it's very hard to stay ahead of work without losing sleep even with excellent time management.

Certain classes are worse than others and it doesn't usually depend on the content of the course, but the people teaching it. I'd blame the culture of the faculty above the school, although the school likely influences said culture.
I have mixed feelings about this. I'm someone who sleeps on average 6 hours/night. When I have experiments, then I sometimes drop down to 4 hrs/night. I've found that I can manage with 4 hrs/night for about a week (it has gotten a bit harder with age)--BUT I know that I'm not as effective or creative when dealing with such little amounts of sleep. I also know that I'm more prone to make errors and try to develop habits so that I do the "right thing (TM)" when I'm too tired to think (it's like martial arts where you train reflexes...). I also try to know when to throw in the towel and just go home because if I stay I'm likely enough to make a mistake that will cost me more time in the end, or I need sleep so that I can think about something.

However, in normal running mode, 6 hrs (as long as I'm getting exercise) feels normal to me and it's what I sleep even without an alarm unless I'm recovering from severe sleep deprivation (I don't drink coffee and generally just drink tea when I really need to stay awake...). What are other people's experiences? Somehow the dark room scenario in the article seems unrealistic. I do agree that for creative work that more sleep (in my case 6 hr/night) seems necessary--but if I find myself sleeping longer (like say 9 hrs), then I just end up feeling more tired...
> I've ... seen studies about less sleep improving lifespan

The surveys I can find associate "normal" amounts of sleep with better lifespan, and both abnormally high and abnormally low levels of sleep (<5 or 6 and >9 or 10 hours, depending on the study) with various negative outcomes. E.g. this meta-analysis pools prospective studies looking at heart attack and stroke rates: http://eurheartj.oxfordjournals.org/content/early/2011/02/03...
1906 SF quake captured in color by Frederick Ives
This should be easy - but it is not. Many many Requesters submit tasks to Turk from the Amazon provided UI, or some other simplified UI with no concept of a workflow. Which makes this stupidly hard.

So you'd think this tool would do this for you - but instead you need another layer on top, either one you code, or some 3rd party tool like CrowdFlower.
PROTIP: Do not deploy the parachute at apogee. If you do, your payload will drift and drift and drift. Instead, let your payload fall back to earth and deploy your main parachute closer to Earth. Bonus points: Deploy a drogue chute prior to the main chute. An accelerometer trigger works great for detecting the popping of the balloon.
No, they can't, but that doesn't mean the cheap end of year push that will happen due to oversupply couldn't change the developer landscape
I find the same sort of result with coding on little sleep. While it feels like I'm "high functioning" while coding at 4:00AM, a code review in the light of day after a good night's sleep often reveals that I wasn't.
Sleep may be more important than food but, interestingly, there seems to be a relationship between sleep and food. When fasting, less sleep is required. However, when sleep is curtailed, there is a greater desire for food.
You misunderstood the question. I specifically say "background job". I'm using delayed_job / resque already. But if the results of the job is needed client side immediately then I've to poll the server periodically and fetch the results when done.

What I asked was whether these types of jobs can be done without the server blocking. igrigorik's answered that. The queue might still be needed but the polling can happen from inside the server code rather
than from browser (the server will hold a connection from browser, keep polling queue and on success return the response)
Sounds very interesting but I wonder if the null of the transmitting antennas is stable in the presence of multipath reflections.

This scheme also works only if all nodes have full-duplex setups, which is impractical for small devices.
Would you use a smart car?
I am part of the fueling for smart-cars, namely smart-cruise controls.

Q: Would you use a smart-cruise control?
Q: What are the cons?

More info:
http://gpscruise1.blogspot.com/2011/03/make-product-before-summer-win_09.html

I value any input as I struggle.

-jim pruett, Founder
wikiSPEEDia.org
For mental work, sleep is not replenishment, it's prep work. Your brain is thinking problems while you sleep.
Food Delivery Search Engine GrubHub Raises $20 Million
I had the same error from time to time, but it seems resolved : https://github.com/flyerhzm/bullet/issues/closed#issue/20

You should open a ticket, eventually write a spec to reproduce.
This is the library we built for the Build a CMS, no forms allowed case discussed here last week:

http://news.ycombinator.com/item?id=2283632
Wasn't the Kno canceled and is trying to sell off its hardware? Yet somehow it is the future....
RIM taps 7digital as BlackBerry PlayBook iTunes rival
While this sounds authoritative, this post is so wrong it hurts.
This is perfect.

Yes, there are ways to game the SEO system, and lots of companies make this their reason for being.

But for 98% of the common website-owning populace, SEO is most simply about publishing information that people want and find helpful. You can spend your time whoring for backlinks, or generating content. One is valuable to your target audience, the other isn't...

IMO, the more advanced SEO tactics are for when you have built a foundation of content and can then concentrate on making some of the farther corners of the Internet aware of your content.

Granted, I'm not someone who labels myself an SEO expert though.
Designing faster with a baseline grid
Its time to start working on Ubuntu Tablet Edition, isn't it? What with the Xoom having an unlockable bootloader, and the whole rash of honeycomb tablets expected this year, maybe its time for the traditional Linux stack to arrive at the next frontier.
Yep. Basically one sleep cycle is 90mins. So it just gives you 3-4 times based on minimum 2 cycles. Nothing fancy.
They might be drowning pigs to find the swimmers.
Muppet Alignment Chart
I read about some such experiments. Some people actually preferred it, and used the distraction free environment to finish their PhD theses.
I don't think I agree with that. Usage outside of what was mentioned is possible with the apps running on the tablet. Pens can already be bought as accessories.
$9 Million Program Gives Students Wireless Internet Access At Home
Find the leverage in the world so you can be truly lazy.

- Larry Page

http://startupquote.com/post/3744092032
Actually, bind and unit seem to fit very well with this interesting article, which explains the mathematics behind monads (in fact it uses unit, which you say has nothing to do with monads): http://bartoszmilewski.wordpress.com/2011/01/09/monads-for-t...