antognini

9 ms·

61.
by antognini 1y ago
How does Kete differ from REBOUND? ( https://rebound.readthedocs.io/en/latest/ )
62.
by antognini 1y ago
Worth noting that this paper is from 2009. For anyone interested they released the code about a decade later: https://arepo-code.org/getting-started
63.
by antognini 1y ago
There's a pretty detailed description of TPUs in the latest edition of Hennessy's Computer Architecture . (Hennessy was also involved with the design of the early TPU architectures if I recall right.)
64.
by antognini 1y ago
They are expenses, but amortized over 5 years. So if you spent $2m on employee salaries, you would then deduct $400k from your revenue every year for 5 years. If your employee expenses remained constant, then by year 5 you would be deducti
65.
by antognini 1y ago
The genetic diversity doesn't really translate to diversity in appearance. Much of the genome doesn't code for anything in particular (so called "junk DNA"), so you can have high genetic diversity due to variance in the
66.
by antognini 1y ago
Specifically they would both be of Khoi-San ethnicity. The vast majority of humans have been through two population bottlenecks which drastically reduced the genetic diversity of the populations. Most African populations have been through
67.
by antognini 1y ago
The basic theory of spirals is basically that you get spiral structure when the orientation of elliptical orbits shifts with semi-major axis. This leads to what appear to be spiral arms that have higher densities. In these high density re
68.
by antognini 1y ago
Moons close to the rings tend to keep the particles of the ring confined within a narrow band (which is why they are called "shepherd moons").
69.
by antognini 1y ago
Biological analogies are always a bit dodgy, but biology hints that this doesn't work very well. Vision is important, particularly for path planning, but the immediate feedback of proprioception and touch is more important for stabili
70.
by antognini 1y ago
I have a phd in astronomy and I spent some time reading it yesterday. I don't think he'd think much of it. The theory seems to be aimed at explaining the existence of cosmic voids and the structure of the cosmic web. But these
71.
by antognini 1y ago
I think it's still not universal among astronomers that the Hubble tension is real. (Though the tide seems to have shifted in the last two years or so with the median astronomer reluctantly accepting that the Hubble tension is probabl
72.
by antognini 1y ago
You learned proper American English. "Gotten" is generally discouraged in British English.
73.
by antognini 1y ago
It's a British vs. American difference. Americans prefer "gotten": "California has gotten good at building batteries." The British view "gotten" as ungrammatical.
74.
by antognini 1y ago
The theory is that the states forfeit certain aspects of their sovereignty, but not their entire sovereignty, by entering into a federation with the other states in the United States. The specific aspects of their sovereignty that they for
75.
by antognini 1y ago
US territories are a rather different situation because they are not sovereign entities in the way that US states are. US territories are essentially land owned and administered by the federal government so the federal government is free t
76.
by antognini 1y ago
There is no recognized mechanism for states in the US to secede. Probably the consensus view among constitutional scholars is that accession to the United States is permanent --- that is, there is no way for a state to secede once it joins
77.
by antognini 1y ago
When I was in grad school in astronomy, one of my professors told me "many a promising young researcher has run their career aground on the rocky shores of tides." The mathematics involved in the theory of tides are formidable. E
78.
by antognini 1y ago
I'm just impressed that the website is still around and they are adding new items. They've been going for more than twenty years at this point!
79.
by antognini 1y ago
There is some interesting discussion on the LaTeX stack overflow page about the challenge of detecting and preventing rivers during the typesetting process: https://tex.stackexchange.com/questions/4507/avoiding-riv
80.
by antognini 1y ago
Even so, the AUM of the underlying hedge fund has been going up. They've stopped publishing the fund's performance, though, so it's a little unclear if the increase is due to good performance or if they've just attracte
81.
by antognini 1y ago
Oh for sure there is a ton that is going on behind the scenes when you substitute `np` --> `jnp`. But as someone who worked on gravitational dynamics a decade ago, it's really incredible that so much work has been done to make runn
82.
by antognini 1y ago
Once you have the matrix implementation in Step 2 (Implementation 3) it's rather straightforward to extend your N-body simulator to run on a GPU with Jax --- you can just add `import jax.numpy as jnp` and replace all the `np.`s with `j
83.
by antognini 1y ago
For anyone interested in more serious journalism about the Church, I can't recommend The Pillar enough. The guys who run it have a lot of connections and know how the Church works inside and out. They had identified Prevost as being
84.
by antognini 1y ago
Yes, but the past half century has been a rather unusual time for the Church since it's coming out of one of the more consequential ecumenical councils. It typically takes the Church a few generations to come to an agreement about the
85.
by antognini 1y ago
Yes, it of course happens, but when it does it is usually a signal that the new pope intends to continue with the vision of his predecessor. (John Paul II is also something of an anomaly, because John Paul I died barely a month into his pap
86.
by antognini 1y ago
There's also more baggage associated with choosing the name of a very recent predecessor. Choosing Francis II would alienate certain factions in the Church, choosing Benedict XVII or John Paul III would alienate others. Reaching furt
87.
by antognini 1y ago
It's not quite so obvious that all of Francis's appointees were lockstop in line with his vision. Up until the last consistory he tended to appoint cardinals from the "peripheries," places that did not historically have
88.
by antognini 1y ago
The field of candidates in this conclave was relatively open compared to the past few conclaves, so it is a little surprising that the cardinals were able to come to a consensus by the fourth ballot. That suggests that one of the initial f
89.
by antognini 1y ago
> If I can use an air conditioning metaphor, it is more efficient to set the house at a temp and keep it there, than to keep turning the AC off, letting the house heat up, and trying to bring it back down from 90. While I get what you&#x
90.
by antognini 1y ago
Back when I was in grad school I observed at LBT (or maybe more accurately I was on a team that was observing at LBT). The Vatican's observatory down the road was affectionately referred to as the "Pope Scope."

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