joshvm

79 ms·

811.
by joshvm 7y ago
The official advice is to keep neutralising it, collect the sludge and pour the waste water away. https://www.mgchemicals.com/products/prototyping-and-circuit... > The solution must not be put down the drain because
812.
by joshvm 7y ago
I've used nylon SLS for lab and commercial optical work. It's strong and you can tap it. It's much cleaner than dealing with resin prints. The quality is fine if you're making simple polygonal shapes and unless you need
813.
by joshvm 7y ago
Standard of living is a function of wealth, but wealth is not the sole factor. It also includes quality of the environment, crime levels, access to good medical care, education standards, civil rights, house affordability and so on. Most pe
814.
by joshvm 7y ago
Is this a conflation between wealth and standard of living?
815.
by joshvm 7y ago
In a most cases, you can reshape to a 1xN^2 vector for a NxN region. This was how object detection worked long before convolutional inputs were popular. Have a look at mnist classification using a linear SVM, for example.
816.
by joshvm 7y ago
I don't disagree, but I'd be careful with that statement. A huge amount of landcover segmentation in remote sensing still relies on simple models - either linear regression (thresholds) or classical machine learning like random fo
817.
by joshvm 7y ago
They've also used OCaml for deep learning: https://blog.janestreet.com/deep-learning-experiments-in-oca... Although it seems to be an OCaml binding into TF, rather than a native implementation.
818.
by joshvm 7y ago
Thanks for clarifying that, I was never sure.
819.
by joshvm 7y ago
SD card performance on the Pi <4 is so poor (and the bandwidth is shared with the USB controller anyway, I think) that you might as well use an attached USB hard disk; even for booting. Jeff's benchmarks are accurate in my experienc
820.
by joshvm 7y ago
Semi-pro drones aren't reliable enough. DJI recently shipped batteries for the Matrice and Inspire 2 which failed mid-flight due to a firmware bug. Affected drones fell out of the sky. Most "pro" drones haven't had anywh
821.
by joshvm 7y ago
Depends how big the dish is. But at the size where it would become competitive for endurance and risk tolerance you might as well charter or buy an aircraft that'd do a better job. If you want a drone that's safer than the average
822.
by joshvm 7y ago
It varies. Some paper downloads are watermarked with individual IP addresses and the connecting institution. It's not solely IP based because services like Shibboleth or OpenAthens let you log in to your institutional account and downl
823.
by joshvm 7y ago
How do modern HUDs overlay the runway? For example even the Shuttle displayed a runway outline during landing [1]. Is it just really good position determination or is it computer vision? I assume once you're on the localiser the aircra
824.
by joshvm 7y ago
I'm currently participating in Frontier Development Lab Europe ( https://fdleurope.org/ ), an 8 week research accelerator with the European Space Agency, Oxford University and a number of tech organisations. The idea is
825.
by joshvm 7y ago
What if also have an energy term for difference in interframe x-position along the seam? Or maybe doing histogram equalisation for pairs of adjacent frames before the seam cutting might help.
826.
by joshvm 7y ago
They found a company that built machines that could laser mill 20um holes and bought them out. It's unclear if they bought the capacity (i.e. all their stock) or if they actually acquired them. The reports vary. https://blog
827.
by joshvm 7y ago
Not a typo. Dishwasher in this case means a human. Most places still need people to wash things. They might have a mechanical dishwasher, but people are needed for fragile stuff, pots and pans, big boards etc.
828.
by joshvm 7y ago
I work with infrared cameras, I'll check this out tomorrow! Useful for things like seeing if someone's just left the office for lunch because their chair's warm. Reminds me of the scene in one of Dan Brown's books where
829.
by joshvm 7y ago
We got a laptop at work. It's an Acer gaming thing which we bought becuase it was the cheapest thing we could find with a GPU in it. It also has an RGB keyboard (which is terrible, half the keys stick). The default setting is to flash
830.
by joshvm 7y ago
True, although as the sibling suggested you can sort by confidence and weed out the edge cases. It's also quicker to go through mostly correct images as you need to make fewer (corrective) interactions/clicks. You can even view eg
831.
by joshvm 7y ago
If you've only got a few classes it's faster to transfer learn a model from a few hundred examples, get that model to relabel your entire dataset and then fix any mistakes it's made. This is less than ten lines of python usin
832.
by joshvm 7y ago
The trick with waterproofing is that it's easy to do rainproof enclosures, but much harder to make fully submersible things. For measuring water parameters I would be tempted to use a rugged box for the Pi and then cable (via a removab
833.
by joshvm 7y ago
No, it's just an aspirated dust sensor. No reason you couldn't run it inside. The main reason they suggest outside is so you can contribute to a global air quality database of some kind.
834.
by joshvm 7y ago
There's a great paper about image labelling, written by an expert labeller: https://arxiv.org/abs/1210.3448 One interesting side to this is citizen science; websites like Zooniverse where you can get random member
835.
by joshvm 7y ago
https://en.wikipedia.org/wiki/International_Union_for_the_Pr... https://www.theguardian.com/lifeandstyle/gardening-blog/2013... https://ec.europa.eu/food/plant/plant
836.
by joshvm 7y ago
You can find some more information here: https://www.gov.uk/guidance/national-lists-of-agricultural-a... Note that there's no restriction on the buyer, you can buy whatever you like. But in order to sell seeds to
837.
by joshvm 7y ago
Actually we do have odd laws. You can circumvent them, as some sellers do, but they exist nonetheless. Real seeds is a British company that sells exclusively non hybrid heirloom seeds. Good stuff and loads of weird crosses. However, they&#x
838.
by joshvm 7y ago
When you fork a repository on Github, the website retains the association between the original and forked repos. But there are also artificial limitations e.g. Github forks can't be private when there's no technical reason that co
839.
by joshvm 7y ago
For audio and most 8 bit work you can buy a two channel 10Mhz picoscope for about £120. Really solid piece of kit, and it's designed in the UK (if that has any weight). Has tons of stuff like signal decoding built into the UI which you
840.
by joshvm 7y ago
This probably isn't for cities. I was at a conference a few years back where Prime Air gave a talk. It was quite a vague talk, but admittedly it was hilarious watching Takeo Kanade grill the speaker on technical details that he refused

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