HN user

keenerd

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kmkeen.com 8y ago

Solving Battleships with SAT

keenerd
1pts0
archive.computerhistory.org 8y ago

The HP-35 Design: A Case Study in Innovation (2011) [pdf]

keenerd
79pts15
arxiv.org 9y ago

Are Black Hole Starships Possible (2009) [pdf]

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2pts0
www.nss.org 9y ago

Space Law and Space Resources

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1pts0
bartlettlabs.com 9y ago

The model III system expander (M3SE) project

keenerd
1pts0
www.encyclopediaofarkansas.net 10y ago

Titan II Missile Explosion (1980)

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2pts0
kmkeen.com 10y ago

Maintainers Matter: The case against upstream packaging

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132pts95
www.wired.com 10y ago

How hijackers commandeered over 130 American planes (2013)

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1pts0
kmkeen.com 10y ago

GZ-Sort: A utility for sorting really big files

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2pts0
archive.org 11y ago

What Is the Name of This Book?

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3pts1
jpaerospace.com 11y ago

Airship to Orbit: Cheap, Bulk, Safe Access to Space (2004) [pdf]

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1pts0
www3.nd.edu 11y ago

Linear Programming Part 1: Formulation and Modeling (2006) [pdf]

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2pts0
fffff.at 11y ago

Free Universal Construction Kit

keenerd
3pts0
www.pulse-jets.com 11y ago

Valveless Pulsejet Engines 1.5

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2pts0
www.pulse-jets.com 11y ago

Valveless Pulsejet Engines 1.5

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1pts0
www.pulse-jets.com 11y ago

Valveless Pulsejet Engines 1.5

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5pts1
cdn.media.ccc.de 11y ago

31c3 videos are up

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73pts14
cache.lego.com 11y ago

Study of Educational Impact of Lego LOGO Dacta (1999) [pdf]

keenerd
1pts0
people.cs.umass.edu 11y ago

Metapuzzles: Reducing SAT to your favorite puzzle (2007) [pdf]

keenerd
4pts0
library.sciencemadness.org 11y ago

Excuse Me Sir, Would You Like to Buy a Kilo of Isopropyl Bromide? (1977) [pdf]

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89pts6
github.com 11y ago

Show HN: Featuritis, a new model for FOSS fundraising

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2pts0
kmkeen.com 11y ago

A new approach to FOSS crowdfunding

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4pts0
kmkeen.com 11y ago

A Month of RTL-SDR: IndieGoGo Progress Report

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5pts0
icfpcontest.org 12y ago

2014 ICFP begins in under 30 minutes

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kmkeen.com 12y ago

Local Euler: Now with all 476 puzzles and images

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75pts12
kmkeen.com 12y ago

Local Euler (flat text mirror of PE) updated with all puzzles and images

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1pts1
www-psych.stanford.edu 12y ago

Implications of the Copernican principle for our future prospects (1993) [pdf]

keenerd
15pts3
kmkeen.com 12y ago

An introduction to thinking declaratively and Boolean Satisfaction

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kmkeen.com 12y ago

Practical use of SAT

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3pts0
www.oscars.org 13y ago

Academy of Motion Pictures report on LED lighting in film

keenerd
3pts0
Concorde ‘B’ 8 years ago

not possible to make today with with unlimited budgets

The Lofstrom Loop is possible today for a few billion dollars. Though "catching" an incoming capsule with a Loop is going to take a while to human-certify.

Ignoring the BS about coriolis, I think there is something legit here.

Of course there isn't any power to be gained from the vortex. What you would gain is a lot of RPMs from very little head. It makes the system be high speed and low torque. The dynamos would be higher voltage (lower amperage), the wiring and inverters are cheaper with lower amperage, and the structure doesn't have to be as strong since the torques are lower. It might even automatically safe during floods, since too much water entering it would distrupt the vortex and halt the wheel.

It is more like a clever hydraulic gearbox that potentially makes all the other components less expensive. Or am I completely off base? The water is spinning around faster than it would be flowing out, correct?

Areas of low contrast become whiter and areas of high contrast become more saturated.

It is also more robust than k-means. The author's algo will only work on scanned images. Photographed pages from a book will often have a slight shadow on half the page from the curvature. Blur-divide will clean this up. K-means will think you've used a lot of gray and not figure out that there are multiple background colors.

It was faster to do this than reading the content the way it was intended. Because they were using random selection you'd have to click 370 times to have a 90% chance of seeing all 59. It is nearly impossible (like 7 nines impossible) to see all of them in under 120 clicks.

How did we both do this at exactly the same minute? You botched up something with the encoding though.

This is absolutely infuriating to read because they've made it so that items are chosen randomly. Instead they should be using a shuffle. That way you don't have any repeats until you've seen everything, at which point the deck should be reshuffled. As it stands you're basically playing cookie clicker trying to find that last one. So here's the lot of them:

* Create a Crunchbase page

* Share your website on Startupli.st or Erlibird.com

* Share your pre-launched website on Betalist.com

* Respond to unanswered questions in your niche on Quora. Look for questions with a lot of people waiting for an answer.

* Submit a free press release using a service like PRlog

* Message meetup coordinators and ask for speaking gigs at local events

* Film your speaking gigs and share videos of your talks on your blog

* Send personalized E-mails to your existing users, ask for referrals or their help promoting your company

* Create an infographic, share on free distribution sites like Visual.ly and Pinterest.

* Write a post called "Our competitor vs Our Company" - This will attract search engine traffic looking for reviews of your competitor

* Submit a presentation or slidedeck to Slideshare

* Giveaway a free ebook, and let users download it in exchange for their email address

* Write a "how-to" guide on Medium for something that is difficult in your industry

* Promote your product in your email signature

* Sponsor a newsletter on Upstart.me & promote your product to other people's lists

* Submit your product to Producthunt.com

* Create a free online course on a topic related to your product

* Reach out to relevant bloggers and ask to write a guest post on their blog (don't forget to include a link to your project)

* Update your Linkedin status and link back to your website

* Grow your social media follower base by following the followers of your competitors

* Create relevant Youtube videos and add relevant keywords in the title and description

* Run Facebook Ads

* Run Google Ads

* Run Twitter Ads

* Run Linkedin Ads

* Subscribe to Helpareporter.com and provide quotes to journalists

* Reach out to podcasts to get interviewed

* Start your own podcast

* Let your first 100 users pay with a tweet, to sign up in exchange for a share

* Create a Facebook page

* Make your UI remarkable and shareworthy

* Run Stumbleupon ads

* Get an Instagram influencer in your niche to promote your product

* Get a Youtube influencer in your niche to promote your product

* Get a popular Facebook page in your niche to promote your product

* Add screenshots of your product to a Pinterest board

* Create a profile on Angel.co

* Ask your friends to share it with their friends

* Sponsor a hackathon

* Sponsor an event by offering a service (instead of money) in exchange for promoting your product

* Go live on Periscope and talk about your product

* Engage in online forums where your target audience is hanging out

* Write on-topic comments on Reddit.com where your product seems to be a solution to the discussion

* Start a Facebook group

* Post articles to Reddit.com in relevant subreddits

* Submit your project to ShowHN on Hackernews

* Comment on industry blogs

* Host giveaway contests on social media

* Offer discounts in exchange for sharing your website

* Create a free Slack community for your target audience

* Host a webinar

* Start a daily email newsletter where you link to relevant news that your audience might be interested in

* Giveaway t-shirts with your logo & website on them

* Create different landing pages with different messages, that all link to your main website

* Attend conferences and talk to as many people as you can

* Be the bonus in someone else's product. Let a different company promote you to their audience in exchange for a commission

* Got a beautifully designed product? Apply for design awards.

* Create a course on Udemy.com

* Advertise at conferences

I'm willing to pay $5/month for one blog: my own. That is what a basic VPS with plenty of bandwidth costs.

edit: Interesting, this is fast approaching my most downvoted comment ever. Wonder why that is. I didn't even bother to link my own blog in case that came off as overly self-promotional.

If you think that content should be free, what is wrong with putting your money where your mouth is and giving your own away?

It can still be rational, but you need to look at shopping as an aggregate of probabilities.

Let's make it more extreme. A $50 item for free or $50 off a $5000 purchase. Discounts as big as 100% off don't come every day. Maybe you'll never see that deal again in your life. You should jump on it. Where as a 1% discount is something you see every day at dozens of stores. There will probably be a bigger discount next week, so don't bother going out of your way.

If you have to make a choice between the two, you choose the item with the less-common discount.

I have not been too impressed with fancier SAT solvers. I'm currently drafting a blog post where I compare Minisat, Picosat, Cryptominisat, Lingeling and Glucose. (Those were all that I could easily get running on Linux. Open to more suggestions.)

The venerable Minisat was (for the most part) the fastest in my simple use case. What I did notice though was that the "smarter" solvers were more consistent. A poorly written CNF might take 50x longer than it should (when compared to N-1 and N+1 instances). Minisat (but moreso Picosat) would occasionally hit an edge case or something and slow way down. Fancier solvers produced a nice clean line on the graphs, without anomalous 50x spikes.

The old word of "fake news" is propaganda.

No, they are different by a matter of degree. Propaganda is all about spin, context, and stretching the truth. Stuff that actually happened but is presented in a mis-represented and misleading fashion. Fake news is completely fabricated and entirely fictional.

Three practices set romance writers up for success: they welcome newcomers, they share competitive information and they ask advice from newbies.

That last one is interesting. People entering a field do so for a reason. It might just be to do a job and get paid, but it could also be because no one is making what they want. Newbies unconsciously represent gaps in the market where someone with better execution could make a killing.

Brb, got to dive beginner programming forums and look at the types of projects that are so pressing that someone is willing to learn how to program.

Correct me if there is evidence to the contrary, but I don't think humans were designed to sit or stand in one position for extended periods of time, habitually.

Hard evidence? I can't give you that. But look at all of the other mammals out there. Almost all of them spend substantial amounts of time sitting.

Traditional hunter-gatherer societies do almost of their work and food processing sitting down. Every hobbyist flint-knapper works sitting down.

The difference is they don't use chairs. Sitting in a chair is bad - just consider the risk of embolisms on long flights. It removes the need for your body to actively support itself and restricts motion. Anecdote of size one, but for me the biggest help was getting rid of the traditional "throne" chair and replacing it a very broad stool. I can comfortably sit cross legged on it all day. I'm constantly moving and shifting my weight forwards and back, leaning and reaching since I can't just roll a chair around.

It has required making some unusual furniture to use a computer comfortably. Like all of my keyboards are tilted the "wrong" way (away from me) with the front higher than the back. Much easier on my hands and wrists.

All comments though were fake - I never sent any of them in to the FCC.

Or your name isn't that uncommon. Have you ever tried being the first google result for your name, as an SEO experiment? It is hard!

I say this as someone who shares a name with a minor league baseball player, numerous facebook/linkedin/etc profiles and a baby whose life/death was covered by the BBC.

I don't go around accusing all of these people of being fake.