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ntownsend

228 karma · joined July 8, 2009

I'm a software developer at amazon.com. My current focus is front-end web development. My background and education are in math.
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ntownsend··on Did highways cause suburbanization?
The environmental impact and culture of waste are enough to make suburban-living evil to me. It's not just about the cost to you in driving your ass around.
ntownsend··on Rails Rumble finalists announced - Vote for the best 48-hour micro-app
Just tried lazeroids on Chrome again. Vast improvements! No trails. Great frame-rate. Very responsive.
ntownsend··on Rails Rumble finalists announced - Vote for the best 48-hour micro-app
Lazeroids is an awesome idea, but it doesn't work in Chrome (asteroids have trails) and I find the frame-rate is consistently pretty low.

Love the sound and music though.

ntownsend··on Olark (YC S09) Is A Dead Simple Chat Widget For Site Owners
Clean. Seemingly lightweight.

Using Chrome I had some issues with the resize handle of the input field. I could drag it to the right, out of the container, and off my screen where it became lost forever.

Also, I know that Chrome adds the resize handle itself, but having it on the lower right of the input text box is pretty counter-intuitive when you have about 15 pixels range for the cursor to control the height of the box.

Overall, though, well done. It looks like the Google Talk widget in GMail. That's a good thing.

ntownsend··on Visualizing up to 10 dimensions
Agreed.
ntownsend··on Visualizing up to 10 dimensions
Yes and no. There are currently no known ways to verify it epxerimentally, but, on the other hand, the theory has recently used to explain high-temperature superconductivity: http://www.sciencedaily.com/releases/2009/07/090706113702.ht...
ntownsend··on Ask HN: Who's Hiring? (take 2)
Toronto, and I can't relocate for about another year.
ntownsend··on What are eigen values?
That was an excellent explanation of the intuition and motivation behind eigenvectors.

Eigenvectors are also used extensively in pattern recognition. Notably, in facial recognition: http://en.wikipedia.org/wiki/Eigenface

ntownsend··on Ask HN: Who's Hiring? (take 2)
Any Canadians, um, eh?
ntownsend··on Memristor Minds
Ah. I misread the NewScientist article. It wasn't clear to me that in the experiment to mimic the slime they, in fact, modeled the slime with a circuit that _included_ a memristor and not with just a memristor. The paper the article cites also made things much clearer: http://fr.arxiv.org/abs/0810.4179
ntownsend··on Memristor Minds
I think I missed something. What is the mechanism that causes the slime/memristor to keep changing states after the external stimulus is removed? I thought the memristor just remembers a voltage. After you remove the external voltage then wouldn't the voltage across the memristor just remember the state it was in when the last external voltage was applied? Likewise for the slime and air.
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