privong

84 ms·

871.
How did plankton end up on top of Antarctica’s mountains?(arstechnica.com)
1 points by privong 10y ago|0 comments
872.
by privong 10y ago
> This device has a temperature-compensated oscillator, and I'm guessing you could never match its performance with a cheapo board like a Raspberry Pi. The 1 PPS timing signal comets from the GPS shield, not the pi. I didn't s
873.
by privong 10y ago
Interesting. I do like that it's open-source hardware. Note that you can build your own, with a raspberry pi and a GPS add-on board that sends a 1 pulse-per-second signal through the GPIO pins. Sample instructions here: http:/&#x
874.
Court: With 3D printer gun files, national security interest trumps free speech(arstechnica.com)
3 points by privong 10y ago|0 comments
875.
Perceptual Hashing Image Similarity Framework(github.com)
2 points by privong 10y ago|0 comments
876.
Why Are Haiti's Coffee Trees So Tall?(reason.com)
66 points by privong 10y ago|38 comments
877.
by privong 10y ago
For those interested, here's a link to the associated preprint: https://arxiv.org/abs/1609.04452
878.
by privong 10y ago
> What am I not getting here? If the cluster in that image is 3K+ miles wide, then those are city sized dots, not building sized. I'm guessing the long tail is not actually in the image? It's probably two things. I think you&#x
879.
by privong 10y ago
> Did you use LaTeX for that? I'm not OP, but yes. The "creator" field in the PDF is: "LaTeX with hyperref package" and the "producer" field is "xdvipdfmx (0.7.9)".
880.
by privong 10y ago
>> No, this sim is done using GIZMO > GIZMO is the name of the code suite, not the numerical technique. Oops, misread that. You already know it's the code suite, not the technique. :)
881.
by privong 10y ago
GIZMO is the name of the code suite, not the numerical technique. I believe GIZMO contains multiple hydro solvers, including various formulations of SPH, moving mesh, and meshless techniques. But you're right. that the simulation in qu
882.
by privong 10y ago
SPH has been fairly common in galaxy simulations over the past 20 years or so. But there's some glaring issues with "classic" SPH formulations, to do with fluid instabilities. As a result, lots of people are transitioning to
883.
by privong 10y ago
> The main problem with these kind of simulations is that they're O(N^2). You can't get away with modelling each star, you have to model the interaction of each star with every other star. Summary of what's below: The typ
884.
by privong 10y ago
> Can somebody who knows about this tell me how much of the novelty in this is CS and how much physics? It's a little bit of both. Over the past 5–8 years, some new numerical techniques ("moving mesh") have been developed
885.
by privong 10y ago
Any chance you have a writeup or blog post about the boat system? I'd be interested to read about the setup.
886.
Backlight Battery Indicator(tedunangst.com)
2 points by privong 10y ago|0 comments
887.
by privong 10y ago
> Tesla dont pay for advertising, so I'm not sure what marketing you are referring to. Or how they are reaching a larger market? Marketing doesn't exclusively mean advertising: The American Marketing Association has defined m
888.
by privong 10y ago
> The "talk about furniture arrangements while there is a hole on the roof" parent mentions The version I've heard is: "rearranging the deck chairs on the Titanic" :)
889.
Everything we know about NSO Group(news.com.au)
1 points by privong 10y ago|0 comments
890.
by privong 10y ago
> if you don't punish ... ppl who don't do research first, things will deteriorate rapidly. Is there a way customers would have or could have known beforehand that this CA was fishy? I agree that the CA should be punished/
891.
by privong 10y ago
> PostDocs may have a bad rap, but 'subhuman' is going a bit far... That may have been an autocorrect "correction" of the word "subdomain".
892.
by privong 10y ago
Anecdotally, that is essentially it. I don't watch the NBC coverage of the Olympics because it's so terrible. I want to see the sports (preferably live) and I want to spend a minimum amount of time hearing about the life stories o
893.
by privong 10y ago
> with a $20 billion budget this year and roughly 4% of the US GDP during the Cold War Just a minor note that it wasn't 4% (of US spending, not of GDP) for the bulk of the Cold War. It looks like it was only above 3% of federal spen
894.
by privong 10y ago
This research uses fMRI, but recently some bugs were found[0] which have called into question a lot of the result. This includes, I think, many of the results regarding free will. Is there an expert here who can comment on the accuracy of t
895.
by privong 10y ago
Most of the major radio astronomy observatories maintain archives (e.g., [0]). Of course, they mostly use highly directional dishes pointed at the sky, but local radio signals can create interference[1]. So, those archives provide some prob
896.
Great wall of sand: China’s risky island(espresso.economist.com)
3 points by privong 10y ago|0 comments
897.
SciPy 0.18.0 Release Notes(github.com)
2 points by privong 10y ago|0 comments
898.
Solar Impulse 2 Completes Circumnaviation of Globe(reuters.com)
2 points by privong 10y ago|0 comments
899.
Drowning the Crystal Goblet: Why Design Should Not Be Invisible(practicaltypography.com)
1 points by privong 10y ago|0 comments
900.
by privong 10y ago
> HN wants us to use the title of the source. This is the title of the source, and it's not even clickbait. I never said it was clickbait, that was the GP comment. And if you're going to refer to the guidelines: "Otherwise

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