hemmer
Joined 15 years ago
Karma
78
Submissions
25
Member since
Dec 12
Recent submissions
Comment · 8 years ago
Comment · 9 years ago
I wonder how much of a role wetting/capillary effects play in this? The liquid interface will distort as it approaches the object, and will try to meet at a certain contact angle (based on surface tensions etc). Correcting for this might help improve the resolution of the scans?
Comment · 9 years ago
This is speculation, but perhaps there's a game-theory issue here. If IEEE loses money by people pirating (and you can apply the usual counter-arguments about whether the pirateer would have gone on to purchase it anyway) rather than paying then publishing costs increase to cover that loss, and therefore hurting the authors who must cover that increase in future if they want to publish in the journal again.
A better situation is where the preprint or open access version is available.
Comment · 10 years ago
Interestingly, these look very similar in design to so-called bacterial ratchets (see Fig 7 of [1]) which allow swimming bacteria to be sorted by size or swimming speed etc. People have even used these ideas to create tiny bacteria-powered motors [2].
[1] https://arxiv.org/abs/1604.01072
[2] http://physicsworld.com/cws/article/news/2009/oct/23/bacteri...
Comment · 10 years ago
I've tried a variety of RSS readers recently for keeping track of academic publications (arxiv and journal feeds etc). I've settled on inoreader [1] as this: (i) includes a search feature in the free tier, (ii) has keyword highlighting (useful for trawling through long lists of papers), (iii) has a reliable Android app.
Comment · 10 years ago
There is some more information and references here:
http://mathworld.wolfram.com/PolyasRandomWalkConstants.html
Comment · 11 years ago
It's interestingly that the Gibbs phenomenon appears visually as a whiplash effect. You can see how it would only get worse as higher order terms are included.
Comment · 11 years ago
This reminds me of the aesthetic in Her [1], which was summarised nicely here [2] by the production designer:
"You could say that Her is, in fact, a counterpoint to that prevailing vision of the future–the anti-Minority Report. Imagining its world wasn’t about heaping new technology on society as we know it today. It was looking at those places where technology could fade into the background, integrate more seamlessly. It was about envisioning a future, perhaps, that looked more like the past. “In a way,” says Barrett, “my job was to undesign the design.”
Comment · 11 years ago
I wonder if this sort of thing might be appropriate for grid computing, e.g. BOINC? There are plenty of mathematically minded projects.
Comment · 12 years ago
I pictured looking top-down at the object, for which the shadow seemed quite natural?
Comment · 12 years ago
There was a recent discussion about cylinders on HN which might be of interest: https://news.ycombinator.com/item?id=8097125
Comment · 12 years ago
This is lovely, would probably make a nice print! I'm working my way through Kim Stanley Robinson's Mars trilogy; this makes a great accompaniment.
Comment · 12 years ago
This might be an interesting idea for a vim plugin too, need to teach myself vim-script first...
Comment · 12 years ago
Comment · 12 years ago
I too would recommend these types of walk - a couple of other ideas for long trails that I've particularly enjoyed:
- Lykian Way, Turkey (http://www.lycianway.com/)
- Rota Vincentina, Portugal (http://www.rotavicentina.com/)
http://www.geograph.org.uk/photo/81429