planteen

17 ms·

121.
by planteen 8y ago
That's why you would never catch me on a rope without at least a pair of loops of smaller diameter rope that I could tie into Prusik knots and self-rescue. Those pieces of rope are almost weightless. There's no reason not to have
122.
by planteen 8y ago
Excellent! I've been using GLFW_TRANSPARENT_FRAMEBUFFER for over a year, but kept having to do builds out of Git to get support. It will be nice when this new library trickles into Linux distros over the next year.
123.
by planteen 8y ago
Wow, today I learned something. I am shocked that deep red states (Alaska, Wyoming, Texas) tax something that a deep blue state (California) does not.
124.
by planteen 8y ago
Yes, there are tons of geologic maps produced by the government that are used by oil & gas companies. Most states require data from well logs to be reported too. I think what parent is possibly talking about is when the BLM puts up trac
125.
by planteen 8y ago
Wyoming has mineral severance taxes to the point that there is no income tax in the state. Over 50% of the state's revenue comes from mineral severance. There is also a permanent trust there. Colorado gets something like $100 million p
126.
by planteen 8y ago
Standard error decreases by the square root of the number of samples. So an order of magnitude improvement would need 100 sensors!
127.
by planteen 8y ago
The article mentions a "highly accurate chronometer" in regards to the Blackbird. So I don't think they deduce time from the stars. Rhubidium atomic clocks are quite compact and not all that expensive. Hobbyist electronics pe
128.
by planteen 8y ago
I also live in Colorado. It is still legal for vendors to offer discounts if you do not use a credit card. Some gas stations have lower prices for gas with cash versus card. If you are buying something you bargain for (e.g., furniture), you
129.
by planteen 8y ago
That's not typical in the western US. Most western states have a public recording of the sale price and often the amount financed held at the county recorder. There can be a small tax (on the order of 0.1%) levied by the county that is
130.
by planteen 8y ago
I never made an offer. I was simply trying to see the house without an agent of my own. The house in question was near where I was renting and had been on the market over a week without an open house. It went to pending a week or two later.
131.
by planteen 8y ago
> More likely, they didn't see you as a serious buyer if you don't have an agent. There are a lot of tire kickers out there. That's definitely it. I literally never got my foot in the door. My plan (which I never executed)
132.
by planteen 8y ago
In a hot market (e.g., Denver last year), the seller's agent would not return your calls for a showing if you didn't have an agent. I suppose you could visit an open house and then submit an offer. Some houses never do open houses
133.
by planteen 8y ago
What if the system was arranged such that there were 2 MCAS systems and 2 AOA sensors, each redundantly wired in a cross-strapped fashion? Then, in the cockpit there are two switches: MCAS PRI/RED and AOA PRI/RED. You could then t
134.
by planteen 8y ago
The system does not necessarily need triple voting. Many aerospace systems are only primary and redundant. There are two highly trained human pilots aboard who can detect and isolate faulty equipment. And my guess is that these high level s
135.
by planteen 8y ago
You are discounting the possibility of software controlling an aerodynamically unstable airplane safely. This has been happening for decades (see X-29, B-2, etc)
136.
by planteen 8y ago
I bought an Orange Pi 1+ H6 for the high-end Mali GPU. The board was dead on arrival, as in, it never pulled any current from the power supply. It was plain as day to see this on my bench top power supply. The support I received was horribl
137.
by planteen 8y ago
Yes, many cubesats need attitude control to point solar panels at the sun. This is usually done entirely in software. By the time you know there is a problem, your spacecraft is probably dead. You probably only have 60-90 minutes of battery
138.
by planteen 8y ago
As far as I know, it has flown on two government (civil space) missions. I'm not longer at the company so I don't know what else it has or will go into.
139.
by planteen 8y ago
Not a Mars spacecraft, but SQLite has definitely been used on some CubeSat missions in LEO. I know because I'm the one who did it. :-)
140.
by planteen 8y ago
"Better than Reed-Solomon" depends on what you mean. R-S is an optimal erasure code and for storage applications, erasure code is usually what is desired. In terms of turbo codes, I think the CCSDS turbo code is out of patent, at
141.
by planteen 8y ago
Consumer HDDs get bit flips all the time. I have plenty of backup files over 100 GB. Put the file on the drive, compute the MD5SUM of it, check the MD5SUM, and come back to check again in 6 months. On many magnetic HDDs, you will get a diff
142.
by planteen 8y ago
I guess simple is relative, but in my opinion, coding theory is not simple. It requires some high level math to understand what is going on. Many people's eyes will glaze over when you go into Galois (finite) fields. Abstract algebra i
143.
by planteen 8y ago
You have to weigh it against the very finite budget of space programs. NASA does this as their decadal surveys. There is no shortage of ideas and serious concepts. The difficulty of putting Hubble or JWST sized telescopes in orbit of other
144.
by planteen 8y ago
That's pretty meaningless though, the speed of interest is the heliocentric velocity. Juno was accelerating toward the largest planet in the solar system and orbiting it, not doing a gravitational slingshot. The current record is Voyag
145.
by planteen 8y ago
Manned exploration may have reached a zenith in 1969, but science did not. In 1969, the field of planetary science did not really yet exist. Since then, we have done flybys of every planet, intercepted comets and asteroids, put orbiters aro
146.
by planteen 8y ago
Mars and Jupiter have orbiters and Saturn had one until recently (Cassini). But what good do those do? They are planetary science missions, largely useless for observing very distant objects. I think what you are proposing is having a bunch
147.
by planteen 8y ago
You are developing a medial, automotive, or aerospace application that needs hard real-time response rates and certification. There is also the option of paying a company to develop a BSP for your custom hardware rather than having to do it
148.
by planteen 8y ago
It's been a while since I used VxWorks, but I hated Workbench as well (prefer using a plain old makefile). One of my favorite features of VxWorks was the shell you could get on a serial port. It was quite powerful, even letting you do
149.
by planteen 8y ago
Yes you can see the broad opportunity but various things can easily break vectorization between extensions of x86 and ARM. The first that comes to mind is use of doubles instead of floats. Another is too wide of an inner loop, especially on
150.
by planteen 8y ago
I think C++ developers do this a lot. I often see links to godbolt.org on Stack Overflow and Bjarne himself on YouTube videos. The tricky part is the are a number of different valid march flags for x86 and ARM that support SIMD.

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