piannucci

9 ms·

31.
by piannucci 5y ago
1. Dunno, but they’re working in MATLAB. 2. I would not expect that to work very well without an IMU, but you can do some pretty remarkably good odometry using wheel rotations, vision, and/or automotive radar if you’re dead set agains
32.
by piannucci 5y ago
Yeah, I think they said they used the TLEs. There are better ephemerides posted by SpaceX on space-track.org under contract w/ the govt, who doesn’t really want to be responsible for tracking all those objects.
33.
by piannucci 5y ago
I was in the audience for these presentations last week, and I sat down with Neinavaie and Khalife for a couple hours to discuss their work. I’m also engaged in very similar research myself, which I presented at the same conference. So...
34.
by piannucci 5y ago
No kidding. My potted Schlumbergera got nibbled by a mouse on the 9th floor. :-( I'd been nursing that plant back to health for years. This wasn't a regular occurrence up that high, but still.
35.
by piannucci 5y ago
Yeah, I think so too. While the authors might attempt to counter that they are only describing EM in vacuum, the fact is that GR is nonlinear. You can’t just add an EM sector by a rank-1 metric component and expect linearity to apply. At
36.
by piannucci 5y ago
Assuming that every paper is reviewed at least once, Markov’s inequality implies that every paper is reviewed exactly once!
37.
by piannucci 5y ago
We crossed paths. Steve was always recruiting volunteers to help staple up announcement posters for swapfest. If you didn't decline strongly enough, you'd never walk away from a conversation with him without a small stack of pos
38.
by piannucci 5y ago
Shtaaap, you’re headed for the Totient Function! Collision immanent, abort, abort!
39.
by piannucci 6y ago
I work at a lab where this is a major nuisance. I’ve been wondering whether the clock spreading in the USB standard could be manipulated to notch out certain frequencies, like in noise shaping for ADCs.
40.
by piannucci 6y ago
Wouldn’t the plant have been located where demand and cooling capacity were co-located?
41.
by piannucci 6y ago
Interesting. I have had bad cell connectivity in unfamiliar airports, though, where I could barely keep a connection to e.g. the Lyft servers. What if I can’t download the module when I need it? I don’t think requiring the user to downlo
42.
by piannucci 6y ago
To add to what others have said-- The spectrogram image contains amplitude, but not phase information. (There are partial exceptions in special cases involving oversampling.) Conveniently, the human auditory system is primarily sensitive
43.
by piannucci 6y ago
Whoa, cool. Could you make a .wav file or something so we can hear it?
44.
by piannucci 6y ago
This is so cool. I hope they will also tackle the problem of predicting RNA structures and catalytic activity.
45.
by piannucci 6y ago
Oh, my God. "On Error Resume Next" is one of my earliest memories of learning to program for Windows. It never occurred to me that it might result in deaths.
46.
by piannucci 6y ago
You might get an answer by reading about Hausdorff dimension.
47.
by piannucci 6y ago
The mainstream theory is that whatever reality is, its consequences on measurable length-scales are as-yet indistinguishable from an almost-everywhere-continuous medium. (I.e. away from black hole singularities.). Until we have the ability
48.
by piannucci 6y ago
1. Don’t let that happen. 2. There have been proposals before for core dilution buckets: a wide shallow dish under the reactor full of something like gallium for the hot core to dissolve into. As it spreads out into the dish, the heat and
49.
by piannucci 6y ago
Knowing nothing about this, broadly speaking, the enthalpy of formation of the diatomic nitrogen molecule is very high, and you might expect to achieve high energy density. Also it does not produce any CO2.
50.
by piannucci 6y ago
Blackbody radiation describes an electromagnetic field in thermal equilibrium. Typically, we associate this radiation with a particular source, or boundary; but the blackbody spectrum itself is a Maxwell fact, not a matter fact. Real syst
51.
by piannucci 6y ago
This! To my understanding, as a dilettante in the science of fluids, turbulence is an open problem mostly only in subfields pretty far removed from everyday engineering: The mathematicians question whether the Navier-Stokes continuum fluid
52.
by piannucci 6y ago
First-- and I'm sure you weren't suggesting this, but I feel I need to mention-- it's extremely dangerous to pressurize a person's lungs above the surrounding environment[1]. Not to mention that pressurizing the inside
53.
by piannucci 7y ago
I think the idea is you leave stuff in your dorm room that you don't need right away, but yeah. Wow. (btw some of the MIT dorms have storage space in the basement)
54.
by piannucci 7y ago
Can we have a bounty program for capturing and turning in transponderless drones? :]
55.
by piannucci 7y ago
Wow!!! What a great lab exercise! Tell me, please: how were the students supposed to reach the melting point of the salt? It seems... too high for me to try this at home.
56.
by piannucci 7y ago
That’s a great question, and it’s (relatively) feasible to answer. The object is coming in towards the center the solar system, so its past trajectory lies outwards. If it has been disturbed into this path from a hypothetical sun-centered
57.
by piannucci 7y ago
Could the flame be acetylene gas?
58.
by piannucci 7y ago
The scale of this experiment is pretty big in quantum terms, so a semi-classical explanation is not inaccurate. The electron is behaving like water filling a bowl. The height of the bowl floor represents how much potential energy the elec
59.
by piannucci 8y ago
The GPS broadcast navigation message includes the offset between GPS system time and UTC, which is specified to be an integer number of seconds plus or minus a microsecond. The integers are the running total number of leap seconds since 19
60.
by piannucci 8y ago
How bad of an idea would it be to create a ROP-based JIT engine for these platforms? You could hand-craft the gadgets and use the stack to reduce interpreter dispatch overhead.

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