kreelman
Joined 9 years ago
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321
Submissions
176
Member since
Mar 23
Recent submissions
Comment · 20 days ago
Comment · 26 days ago
Indeed. I worked there for about 4.5 years, initially on the clinical programming software (the software that makes it as easy as possible for a clinician to setup various channel levels for the hearing part of the device and how they map to electrodes). It was a fair bit of fun doing it.
I ended up wanting a change and went and worked on the TIKI (Totally Implantable Cochlear (K?) Implant). During that time, Cochlear ran into some profit problems (circa 2000 ish?) and they did the redundancy thing for nearly everyone on the TIKI project. That was my first redundancy..
A TIKI device was eventually implanted in a volunteer subject. It was found to hear too much body/blood flow noise and was deemed unsuccessful. The device was made to operate as a normal implant as well, so they simply got an external speech processor and they were able to hear.
It would be interesting to hear how and how well Med-El managed to filter out the body noise from the internal device.
Often, engineering in Australia is hard to come by. We're a small nation in terms of population. If you've got a great idea and you have good people, you can still go far. Cochlear is one example. Resmed is the other Australian medical device success story. There are failure stories too like the Telectronics pacemaker whose wire insulation perished over time...
I'm really hoping QSAT (https://qsat.au/) will be another Australian success story. QSAT have a very neat satellite ground based comms system that can track and communicate with multiple satellites simultaneously. It's derived from the CSIRO phased array project. Unfortunately CSIRO looks like it's fading away. It is also harder for QSAT (probably most Oz startups?) to find startup capital in Oz. In the US you can pick up 0.5Mill of the side of the road....
I really do wish QSAT well. They have an innovative product and excellent people working on it.
Comment · 29 days ago
Is this whole article (the article in this Hacker News post, to be clear) an example of
"Correlation is not causation" ?Comment · 29 days ago
It indeed is very worth being very clear about the limited data that makes the images.
It is also very cool.
..Nothing to add, simply echoing your sentiment :-)
Comment · 1 month ago
It's quite a lot of fun to make guitar like noises and adjust the various parameters...
Air Guitar players unite!!!!
Comment · 1 month ago
Poor old America.
I think you'll need to wait for the Orange Toddler to pass away before you can get anywhere with reinstating environmental checks and balances.
Even then you'll need to contend with large corporations with buckets of money... and the Republican party...
Comment · 2 months ago
If I create a view of a table containing JSON data (or any other kind of data), I can create columns from calculations on existing fields.
I'm guessing the advantage of generated columns is that they are real columns, not computed columns like in a view. This means that if an insert doesn't work with the new generated column an error will be generated? Is that a correct understanding ?
Is this perhaps the main advantage of this feature ?
The data creation and storage options, always computed or stored on write of dependant columns seems like a possible advantage too.
Comment · 2 months ago
Agree!
He has some great videos. I watched this one and was impressed at the calculations, the transparency and the celebration at the end when he reached supersonic speeds.
Comment · 2 months ago
Amazing, you can play chess on an emulated system built in the '90s from technological "mud and straw".
It's an amazing feat of teenage engineering.
I hope you have a job working with code somewhere!
Gracias!
Comment · 2 months ago
It looks interesting.
Isn't the same kind of thing available from LLVM?
clang -emit-llvm -c main.c -o - | lliComment · 2 months ago
Here's the CH32v003, https://github.com/openwch/ch32v003
These are pretty low end and are fairly available at low cost.
Here's a youtube of someone talking through some of the the CH32 boards, https://www.youtube.com/watch?v=Kss6WQvJbRs
He talks about them being the "10c/chip" chip.
Then, there is the CH32v303 https://www.wch-ic.com/products/CH32V303.html, which is the lower end of the chips that support minimal floating point and USB host/client. These ones are a bit more pricey, https://www.lcsc.com/product-detail/C5456849.html at $US1.72 each. The extra price is QFP64 (64 pins, quad flat pack) and more features on the chip, USB, CAN, V4F extension giving one instruction multiply and some floating point operations.
Note that the fact that this chip uses an extension, V4F, for floating point (I think?) is part of the argument of Dmitry's piece on the RISC-V. The chip is pretty low price for a fair bit of power.
Comment · 2 months ago
With missteps and imperial arrogance in Iran and Ukraine, perhaps the world might not be counting on the US as much militarily either?
"An army marches on its stomach"... If things at most soldiers homes aren't as good as they could easily be (financial prospects, opportunities..), maybe they don't have the same drive to fight with the same vision and discipline as they used to? I hope they will employ good vision and discipline.
Science is gradually getting gutted too...
Comment · 2 months ago
Vale Elise.
Comment · 2 months ago
Glad you'll get to watch them.
RV Jones was pretty incredible. From the interviews you get a bit of a picture of his initial attempts at getting his points across. He was persistent and knowledgeable.
Indeed, it's a shame that war brought us so many advances...
Comment · 2 months ago
Ah, thanks. As I think about it, you're right. There was a Lorentz landing system in bombers that was far too accurate for just landing. Intelligence gathering extracted that from the crew's conversations. That was how they hid their direction finding... But the system already existed.
I think I got confused with radar, but radar isn't beams as such.
I'm sure there are a bunch of differences, but fun to think about perhaps.