skysight-inc/HackerNews huggingface dataset:
Trichomonas Rapid Testing
Physicians office resource is your main portal for access to products from the nation’s major pharmaceutical firms and medical diagnostic equipment makers, as well as an online source for physicians’ to purchase tools and office testing equipment.
The tips on the last page of that article are great.

If you've not read The Black Swan already, I would highly recommend it, it's a fascinating book.
Ask HN: There is only ever the present moment. Time does not exist. :)
Just curious!
"We were not allowed to activate our backup generator plan based on instructions from the fire department."

That is the interesting bit. So I guess two datacenters in different physical locations are a necessity as a backup plan.
You'll also want to look at this recent NYT article on fatigue:
http://health.nytimes.com/ref/health/healthguide/esn-chronic...
The Race To Social Network 2.0
For many people here it's alfa and omega :)) ask PG.
There is also a lecture on the same topic.

"From NAND to Tetris in 12 Steps":
http://www.catonmat.net/blog/video-lecture-from-nand-to-tetr...
Video Lecture on Building a Modern Computer from First Principles
Why do you need a laptop then?
Technorati Founder Dave Sifry Takes On Travel Guide Industry
Is not ebay already the source for (commercial) reputation online?
Teen Halloween Costumes
HalloweenScene is the web's most popular outlet for Halloween Costumes. For all of your costume needs, the sexiest costumes, childrens costumes, adult costumes, and hundreds of costume accessories.
A smaller market - but with built in reputation?
Be a proxy to ebay initially?
Facebook cache absolutely everything they can.
Seems like you may be looking for some sort of aggregator that can interface with other auction sites (both buying and selling) as well as doing its own listings.

What's eBay's precedent in allowing websites to repost scraped data from its listings? It'd be easy as all get-out. My guess is that something like this has been tried.
I just came across this and wanted to add my thoughts and reach out to the other Dallas startups.

1) Is Dallas a good city for startups? That depends on your involvement/wants/definition. There's a lot of money here and a lot of good MBA schools/programs around. If you had asked, Is Dallas a good city for hackers?, I would've probably said, "Not really since we don't have a quality tech school."

2) My startup, LearnItfirst.com (video training), is hiring both permanent and interns: http://www.learnitfirst.com/jobs/

Someone posted a StartUpDrinks.com group: http://dallas.startupdrinks.com/
How do you 'rate' a developer or team lead?
The first things that come to mind are the raising of fees and locking out payment methods other than PayPal.
No, like some combination of an OpenID-like system and a search for auctions and similar things across many sites. Such a thing would probably have to include eBay to be very useful at first.
Despite A Receptive Audience, Luxury Brands Lag In Adopting Ecommerce 
"Only one-third of luxury brands sell online - but eight out of 10 affluent and high-net-worth consumers worldwide use the web daily for researching and buying luxury goods and services."
Good to hear I'm not the only one who feels that way who had the same experience.
While I'm sure it will achieve a degree of success, I can't see how a commercial product is going to become the de-facto standard.

You only have to look at the high cost of the premium Rails hosting companies. A high quality commercial VM is a no-brainer for startups with money to throw at deployment, but this is just one niche of Rails users.

For the rest of us, Ruby's upcoming 1.9 VM has almost the same astronomical performance gains as claimed by MagLev, and is completely free and almost runs Rails already.
Defunctionalization and Java
Please don't spam your URL, especially not as your signature. That's (very) bad form.
Yes, you're worrying too much over this. :) "X times less" is a common shorthand for one Xth as much.
For many fields of study, you can use CLEP, DSST, and GRE tests to build up credit, and then have only a few actual courses you need take to get your degree. Few people do this, of course, because most people would rather sit in class than let all their credit for the course ride on a test.
I had restless legs syndrome. My (herbalist) wife diagnosed it as a magnesium deficiency. There are a variety of reasons why habitants of western society can be magnesium deficient, which I don't have time to go into here.

Rather than waste time with potentially ineffective dietary supplements, the easiest way to get more magnesium is with a bath of Epsom Salts, which is actually just magnesium phosphate. Run a very hot bath with two cups of epsom salts diluted in it, and plenty of it gets absorbed through your skin.

The first day I tried this, I had the best night's sleep in years!

So in my case, I think her diagnosis was correct, and I took the baths every second night until I felt completely better and my sleeping patterns were back to normal. (My coding concentration improved too.)

ps. If you don't have a full-sized bath tub you can use a bucket and just bathe your feet, though I imagine you won't absorb as much this way. Just make it hot.
Yes, but to counterpoint that..

they don't store anything, anyway. They're simply protocols, a network and a login system.
Cute trick, but what makes it front-page hacker news?
Not being able to downvote this is what you get on the frontpage...
Ebay is where the buyers and sellers are at, so it's where the sellers and buyers go. What do you expect them to do, go to a website so hip and obscure that nobody knows about it?
A Tribute to Jim Gray: Sometimes Nice Guys Do Finish First
The problem, of course, is inertia. Everybody hates ebay, but they have the buyers, the sellers, and the feedback data.

If I were trying to beat ebay, first I'd separate feedback into another application. Why should you need separate feedback for ebay, amazon, and other sites? It should all just be one reputation score, which lets people know whether you're an honest buyer/seller or a crook. You could import existing feedback from existing sites.

Second, I'd come up with an app that would allow users to search for items not just at ebay but at other sites too, in the hopes of attracting users, given that they would have little reason to help bootstrap a new auction site that has neither buyers nor sellers.

Third, I'd write an auctomatic-like app for sellers that would have a superior interface for them to list items at ebay and other sites (Amazon purposely gives sellers inferior tools for listing items unless they pay $40 to become a power seller).

If all goes well, I would now have buyers and sellers visiting the site. Next, I would start hosting auctions myself, which would optionally automatically be listed if a seller listed an item at another site. My fees would be quite a bit lower than ebay's or amazon's and scammers would not be tolerated.

Of course, this is all easier said than done... I guess there's a reason ebay remains dominant after a decade of craptacular service.
starts getting interesting on the second page, worth a read for the fantastic quote:

“Scientists don’t know what they are talking about when they talk about religion. Religion has nothing to do with belief, and I don’t believe it has any negative impact on people’s lives outside of intolerance. Why do I go to church? It’s like asking, why did you marry that woman? You make up reasons, but it’s probably just smell. I love the smell of candles. It’s an aesthetic thing.”
also try monitoring your body temperature, especailly head and feet (socks and a hat), this can also help.
Bezos Talks Web Services
Markdown is a clear example of re-inventing the wheel and making significant improvements. I personally prefer reStructured Text.

http://rst2a.com/
You can do this at MIT: http://web.mit.edu/registrar/www/schedules/advst.html
It is not such a stretch to envision a world in which we have flocks of these circling endlessly over "enemy" population centres waiting targets of opportunity. Our own people barely even need to be aware that we're doing it, no body bags coming home, no loved-ones overseas for years, it will no more make it to the news than when a Tomahawk is fired now.

That is a terror weapon, in the most literal sense.
http://en.wikipedia.org/wiki/Greenspuns_tenth_rule

it is so funny all the stuff they do to JAVA to solve the problems with the language. just CHANGE language instead...
Even if they defend their lead architect, he still failed at scaling twitter.
Does the company generate profit, or even income?
I came here to say pretty much the same comment, haml is awesome (I'd much rather use it in a project than something equivilant to generate xhtml [sass is nice too :P]).
The MacBook Air: Thin Enough To Slice A Cake
Offbeat Guides: Build your own travel books
Apple Bought Me.com? .Mac's New Name?
You certainly would, if you could wish afterwards for another billion dollars. ;)
smirk The company I work for serves volumes that dwarf that of Twitter. We don't drop anything, because we are handling actual money, not tweets. And we get by with 3 database servers, one of which is for failover.

OK admittedly they are wardrobe-sized Suns running Oracle, but that's not the point. Yes it takes skill to do a lot with a little, but it takes skill not to paint yourself into a corner too, and you need both skills to succeed.
I'm nearing graduation, and I want to work through this course because I want to make sure there are no glaring gaps in my knowledge. What better way to ensure this than to implement a complete computer from scratch?
Like.com’s Creepy, But Effective, Facebook Ads
I feel bad for these admins. It's not really their fault, but I'm sure a lot of end users are going to give them a lot of crap.
I'm down with taking the twitter idea and applying it to different areas of interest, but blatant copying of their site design/layout is kinda lame, imo.
Don't you have to be already registered as an undergraduate student at MIT to be eligible for those examinations?
That would also make it a much, much bigger book.
Attacks that require an in-flight rewrite of the client side element of the authentication method are several orders of magnitude more difficult than wire sniffing for passwords, which is not an insignificant barrier when we are talking about a 15/30 minute at-the-coffee shop attack window.

Wire sniffing won't work in a properly implemented scheme as the server doesn't trust the client in any way. All it does is accept transactions that contain appropriate authentication tokens that can be independently verified by the server. This means that your attack would need to insert a hook into the JavaScript to push the contents of any password field to a box under the attacker's control.

(Assuming there is a shared secret between server and client (eg, a password set up over SSL) then CHAP can provide authentication without the shared secret ever being available on the wire without it being (salted+hashed). The language used to implement the system makes no difference (provided you have a good source of random numbers available on at least the server, and a strong hash function). Even if you can't do SSL to set up the password this still has value over plain text, as it allows people to set up passwords on trusted connections (corporate LAN, wired ISP) and not expose them on untrusted networks (coffee shop wifi) to the most common form of attack - passive logging.)
Charles Oliver Nutter On Maglev
Thin, Ruby on Rails & Nginx fair proxy: Performance testing
most of them support offline messages as well.
Or a graduate student. The idea is you can study everything ahead of time and then take all the exams and get your degree(s), or at least get them in a very compressed manner.
We had a discussion about 'autodidact' and 'self-learner' a while back. Perhaps he was referring to that.
Ask YC: Blogging software for App Engine
Does anyone know of any blogging software that runs on App Engine? I am in the process of moving my personal site (which includes an integrated WordPress blog) to App Engine. Everything is moved over but the blog. I know I can link to an external blog, but I would much rather have it integrated into my site and be able to customize it and muck with the code.

Does anything like this exist yet, or do I need to make my own?
Whereas 10^(-1) is exactly what the author means.
Freeman Dyson's Brain
Well put.

That being said, I'd prefer this scenario to the present one with body bags coming home. That is, as long as I'm still living in the U.S., away from the perpetually aloft drones.
After reading this:

"While working at I.B.M.’s Thomas J. Watson Jr. Research Laboratory in New York, Mr. Gray asked his boss if he could relocate to an I.B.M. laboratory in San Jose. When he was told that he couldn’t, he said, “All right, then, I quit.”

He then got in his Volkswagen, drove across the country and was rehired by an I.B.M. laboratory in California."

I'm very sorry to have never met Jim Gray. He sounds like an amazing individual.
Security is nothing but an obstacle course. The only time security is not merely an obstacle course is when you completely destroy the thing you're trying to protect.

This is fundamentally something everyone needs to understand about computer security-- it's all about creating bigger and harder obstacles (including literal, physical obstacles). You can never absolutely secure something while it exists.
I believe he is referring to this thread.

http://news.ycombinator.com/item?id=198809
I wasn't being snarky, it's a serious question. Is there something especially relevant about cuckoo hashing that led someone to submit it?
Interesting. My family physician also wasn't happy about the restless legs diagnosis from the sleep lab and first wants to test Magnesium and Vitamin B (I went to the sleep lab of my own accord, it was not her recommendation).
Taleb makes some valid points but it's a little ridiculous to blithely assume that everyone always underestimates the probability of rare events and thus all mathematical finance is useless. There's a whole field of study -- behavioral finance -- dedicated to discovering and understanding the facets of human nature that cause us to over and underestimate probabilities. Financial models often make simplifying assumptions that can make users complacent -- e.g. log-normal distribution of prices -- but they can also lead to a good number of useful facts and methods if you're aware of the dangers of the assumptions.

I think Taleb is taking the easy way out. Rather than doing the hard work of modeling fat-tailed probability distributions, or studying how people mismanage risk, or building new financial models with more realistic assumptions, he throws up his hands and says that the future cannot be modeled. To his credit, he did once run a hedge fund based on his principles (called Empirica), but it was forced to close. Whether this was due to a lack of rare events or to mismanagement, no one can really know.
Securing the Root name servers
The problem with working out is that I am frequently too exhausted to do it. I do sports, but something on a regular basis in general was impossible to me so far.
Refreshing article. The author refuses to rationalize his Web addiction, unlike a lot of other smart people. The very advantage of the Web over TV, absence of central control, makes it an even more efficient timewaster.
From teh pov of small teams, I think the most important difference is that GAE takes care of systems maintenance completely. No worries about having someone on call to fix the server, to monitor load, to periodically patch the server software. That is one less systems administrater needed, which can be a significant cost.

The problem with GAE as many have pointed out is being locked-in to the GAE architecture. I'm betting on open source systems built on top of AWS, specifically scalr. Can anyone comment on their experiences with scalr?
Even Sun is scared of MagLev.
Doing a dating app on Facebook would be difficult for two reasons.

First, the privacy controls. If I am already Facebook friends with someone I fancy, we would just correpond via the messaging system - no app required. For an app to introduce me to a potential date whom I am not already friends with, we would both have to agree to let the other see our profiles. This agreement would be based on the Facebook mini profile - a photo and location. This sounds like speed dating without the speed date bit.

Second, segmentation of one's life. Facebook profiles are not anonymous blogs about one's sex life, or conversations with friends about a Saturday night party - they are public faces. Even in the real world, dating is done in private: alone, with few facts shared until the relationship is official. People are not going to want to muddy their public Facebook face with their dating life.
Just One More Hack -- the only song ever about a debugger
Everyone repeat after me: Coincidences happen. Correlation is not causation.

Then again, I highly doubt the author of the post seriously believes it's anything other than a coincidence himself - but whatever brings the traffic.
It's interesting enough to be voted up to the front page. The front page is a snapshot in time of an algorithm that lists submissions according to the function of time and votes for each item. Voting represents a multitude of motivations, including to show agreement, increase discussion, reward the submitter, or mark the story for future reading or reference.[1]

[1] http://news.ycombinator.com/saved?id=yourid
Note, there exists that separate reputation service-- Rapleaf: http://blog.rapleaf.com/about/
Use PasswordMaker.
You can't have it both ways. If you are hashing the password before it is sent from the client to the server, you need the raw password on the server side.

(Assuming you are concatenating it with a server-provided random value before the hashing.)
Lampeter University in Wales has some programs that might fit the bill.

Also, I've heard good things about the Open University.
The original TC article made me feel rather upset. What kind of journalist takes that kind of tone and makes personal attacks against anyone? Arrington has done this repeatedly over the last few months.

Startups have to strike a balance between getting the architecture right and getting a product out the door. The bright and lucky ones come up with a minimally correct infrastructure which is approximately equal to what they can hammer out with their existing resources in the least amount of time. Most of the time, teams aren't experienced or lucky enough to pull that off, in which case it makes sense to try to fail early --- this means not spending time on infrastructure. They get the concept out, and see if anyone wants it at all. There's no point in releasing a product which scales to 100 million concurrent users if no one wants it. In its early days, Twitter must have done what it could to get its service up and working, and used MySQL for the same reason you (yes, you!) use it: the team was familiar with it, and was used to either stuffing code with SQL strings or using an ORM.

After the service took off, a lot of things could have happened. Has Arrington bothered to ask Blaine Cook if he had the resources to do The Right Thing? Did Blaine have the time, or did his company tell him to sit in front a glowing screen and do CPR while the CEO goes out to raise cash? A journalist should have at least indicated that he attempted to hear the other side of the story.

http://en.wikipedia.org/wiki/Yellow_journalism
Your observations on needing a "great city", for a lifestyle based on art, writing, and technology were right on..That is exactly what I've been looking for, is Paris that city?? Or Moscow or toronto??After I read your latest book,Who's your city" I decided what I've been needing most is NETWORKING. Without a network its extremely hard to find one. I am planning a visit to Toronto would it be possible to meet? Or should I just head for Paris! Janice Armellini
>For many introductory courses and even advanced science and math courses, you can probably work out a solution with a professor where you would take the final exam early in the semester if you have a good reason.

Never underestimate the silly requirements (e.g., "2 years residence") of a university. University's are not set up for you to teach yourself, take a test and finish fast. It's just bad business; you don't want the customers to be your competitors. Why let you take classes by exam and graduate in 1 year, when we can force you to stick around for 4 years?

Also, never underestimate the arrogance of professors:

Me: Dr. Jones, I've taken chem 2, orgo 1 and materials thermo. Your class (chem 101, a graduation requirement) conflicts with quantum chemistry (an elective which I can't substitute for chem 101). Can I take it by exam?

Jones: It's not possible that you know the material without taking this class. I won't give you the opportunity to prove me wrong. You shouldn't take graduate courses anyway.
My experience is this: Make friends at the top. You will have a much easier time getting through school if you send out some e-mails to the heads of places which you are considering to see how they respond to your questions.

The tangible benefits to having formal degrees (at least an undergrad) get smaller as the size of the company you are pursuing out of school gets smaller.

I went (and left) a very large university, it was hard to get things like this considered, and often they had attendance policies which said if you wern't IN class, you could fail..so getting the syllabus and taking the exam later just was not an option.

Hope this helps. Feel free to ask about anything, it seems like I was in a similar situation a few years ago, I'd be happy to tell you about all of my experiences.
Ask HN: Is github hurting the development of a free alternative?
I am rather underwhelmed by trac support for git and by alternatives like redmine.
What do you think? What are you using for web based project/source management?
Coincidence. I've seen that ad many times before, and I'm fairly confident few or none of the profiles I viewed contained sunglasses in the profile photo.
For all the chemistry geeks...
Your method for storing the passwords server-side is actually not very secure. Hashing the passwords without a unique salt is not a secure way to store them.

For one thing, every user with the password of 'secret' will have the same hash in your database. Secondly, if I were to steal all of your password hashes, I would just have to compute sha2 of every 6-8 (or whatever password length you are using) character string. With a 32 character salt, I would have to compute a sha2 of every 38-40 character string, making my job a more time consuming.
Ask YC: Mosso.com Computing Cloud? Anyone Tried It?
I just spotted this in an ad. Anyone tried this? Looks interesting.
The thing with a salt is that - would you include the salt in the Javascript hashing system? like sha2(nonce + sha2(password + hash)) ? If so, then the salt isn't really that useful - you can then just compute sha2 of 6-8 letters + salt.
Isn't the removal of feedback options one of the new problems?
i can say the same