planteen

20 ms·

151.
by planteen 8y ago
Firefox works great, as others have mentioned.
152.
by planteen 8y ago
Seriously, I have a 2.20% rate in my savings account.
153.
by planteen 8y ago
Yes and a SpaceX rocket computer is not in space very long and is mostly in the low radiation environment of LEO. These Mars rovers spent years in a high radiation environment and received a large total ionizing dose of radiation. Having mu
154.
by planteen 8y ago
Not radically different. The company that did this work was staffed with engineers who had experience on larger spacecraft. The fundamental algorithms are the same. The difference is that everything is much smaller - less momentum, so less
155.
by planteen 8y ago
I worked on the software for the attitude determination and control system (ADCS) for the MarCO spacecraft.
156.
by planteen 8y ago
Don't you think part of that experience is luck? What can you do if you are stopped at a red light on an icy road, someone comes in hot and rear ends you, causing you to collide with the vehicle in front of you? You will be at fault fo
157.
by planteen 8y ago
JPL is still at work during the current shutdown...
158.
by planteen 8y ago
Denver for instance goes on accident alert during snow because there are so many minor, non-injury accidents. This means that police will not respond to your accident because there are so many and you self-report. There is obviously an erro
159.
by planteen 8y ago
Animals can do more than just count. Some birds understand ordering/ranking as well as the concepts of addition and subtraction. https://www.nytimes.com/2011/12/23/science/pigeons-can-learn... http
160.
by planteen 8y ago
How can you think of a continuous time signal as a polynomial though? I don't know of a continuous time analogy. It seems like the polynomial only works for the discrete case. And FIR filter convolution is rarely computed by FFT in FPG
161.
by planteen 8y ago
Yes that's true. But if you come at it looking at it as a sampled continuous signal and spectrum, you don't think of the FFT as fast polynomial multiplication. Neither viewpoint is wrong. Just different lenses for looking at diffe
162.
by planteen 8y ago
Neat, I've spent years with the Fourier transform and never have seen this!
163.
by planteen 8y ago
> If their economic growth and general influence continues along anything even vaguely resembling its current trajectory, they will be the most powerful and influential nation in the world in the very foreseeable future. I agree China wi
164.
by planteen 8y ago
This forum isn't really that good for space discussion. There are definitely people in the aerospace industry, but not very many, and mostly in software. You really need some people who are aerospace engineers to have the best discussi
165.
by planteen 8y ago
In addition to what others have said: ski passes - had a job in Colorado where you got up to 4 passes for the same day once per season flex time - for jobs where you are billing hourly, as long as you get 80 hours in a 2 week period and man
166.
by planteen 8y ago
I used to work on spacecraft flight software and I agree. Some people are so off base it's not even funny. I used to correct them but that nearly always leads to a pointless argument. One of my favorites was when a reaction wheel faile
167.
by planteen 8y ago
JPL also has PhD applied mathematicians on staff to ensure numerical stability of their algorithms at double precision. Most developers do not have the ability to do that sort of non-trivial analysis. They are not just blindly saying "
168.
by planteen 8y ago
The primary reason is $1 is the delisting threshold.
169.
by planteen 8y ago
This is correct. To add to this, you will sometimes see companies attempt to avoid delisting by reverse stock splits (e.g., 10 old shares become 1 new share).
170.
by planteen 8y ago
I think part of what you are asking is, "If we can't resolve the disk of a object, how do we know if it is a galaxy or a star?" The answer is that we can tell a lot about a point source based on its spectrum. For example, qua
171.
by planteen 8y ago
That's like saying UTF-8 requires "nonsense" pair, triplet, or quadruplet chars. UTF-16 handles all Unicode code points just fine. UCS-2 does not. Windows transitioned from UCS-2 to UTF-16 long ago.
172.
by planteen 8y ago
That implies that PDFs work with glyph indices, not Unicode code points. How do PDFs work for shaped languages like Hindi? In a script like that, you may have glyphs without any corresponding Unicode code point. Or does the PDF perhaps stor
173.
by planteen 8y ago
That's right, real-time does not mean real-fast. In a hard real-time system, there is a deterministic worst-case bound for response times. "Real fast" CPUs, like the latest and greatest Intel CPUs, are actually pretty difficu
174.
by planteen 8y ago
I know what you mean about Matlab as a software engineer. But it seems like non-software engineers like aerospace love "autocode" to get their Matlab code in embedded systems. I know for a fact such technology has been used in s
175.
by planteen 8y ago
Ah, the world of government contracts, where a startup may contractually required to have a "drug and alcohol free workplace" which means getting rid of any beer in the break room fridge.
176.
by planteen 8y ago
Sounds about right. I've been a part of a radiation test giving a SoC gamma exposure for total irradiating dose measurement. I didn't see a single upset the whole test.
177.
by planteen 8y ago
In the microwave frequency range for TWTAs but not so much at lower frequencies. I worked with MRI amplifiers for a while (64 MHz or 128 MHz, depending on 1.5 T or 3 T) and things have gone solid state there. Broadcast seems to have followe
178.
by planteen 8y ago
Three-phase power is common for service in the US for commercial, industrial, and rural areas. But it is not typical in urban or suburban residential areas. And yes, nearly every home is served by 220 V phase-to-phase with a center tap. Am
179.
by planteen 8y ago
I've wondered why it wasn't underground as well. I live in Colorado and have underground at my house. The EIA says underground is 5-10x more expensive. https://www.eia.gov/todayinenergy/detail.php?id=7250
180.
by planteen 8y ago
Is there any way official way to exchange BTC for Venezuelan Bolivar? Is exchanging BTC really any different from the way you would realistically exchange USD? My guess is any currency transaction will use a parallel or black market due to

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