ckrapu

8 ms·

91.
by ckrapu 2y ago
I was hoping that this proposal would be a uniquely unilateral one. If a single state or province in the USA or Canada committed to this plan (and if it worked as well as I optimistically propose, and provided enough nutrients) then they c
92.
by ckrapu 2y ago
The spring-summer timeframe is the biggest issue to deal with here. I think that this design would have to have a sacrificial layer with decomposing, anoxic material which degrades during the warmer months. Perhaps it could be mitigated wit
93.
by ckrapu 2y ago
Good catch :) I thought about this for awhile and the gap between harvest time for many crops and first frost isn’t enough to get more than a few inches of rainfall in most agricultural regions with favorable economics. I think the wetness
94.
by ckrapu 2y ago
Let's say that we have a hollowed-out zone in the middle of the biomass pile where we tolerate limited oxidization so we can run a fire. If the rest of it is wet, maybe the heat from that combustion could pyrolyze a large radius of sur
95.
by ckrapu 2y ago
A flawed doomsday weapon but a good mechanism for building a fictional world where the biosphere develops underground.
96.
by ckrapu 2y ago
One downside: you have to ship all the carbon to the coast. Transport is a non-negligible consideration for all of this. Ideally, you just grow a ton of switchgrass in northern US / Canada / Siberia and store it nearby.
97.
by ckrapu 2y ago
I had an issue with an out-of-date mathjax configuration, sorry! I've updated it. Is it still not rendering? It looks fine in my browser.
98.
by ckrapu 2y ago
Great point. I handwave this away by saying that most of the biomass will be frozen most of the time, providing the necessary structural support.
99.
by ckrapu 2y ago
This is definitely true. My hope would be that the thawed region would be a very thin shell overall, so the overall emissions as a fraction of total stored mass would be relatively low. Can you think of any ways to minimize anoxic activity
100.
by ckrapu 2y ago
Sadly, I don't think so. Many of these carbon burial/sequestration proposals all advocate just taking all of the plant matter and tucking it away, including the N and P.
101.
Solving climate change by abusing thermodynamic scaling laws(ckrapu.github.io)
124 points by ckrapu 2y ago|173 comments
102.
by ckrapu 2y ago
What’s the tasking time on these? Could future governments use these for military purposes?
103.
by ckrapu 2y ago
From anecdotes I've heard and read, the labor practices used in Taiwan in the semiconductor industry clearly were not going to be legal in the USA. Did TSMC think that they were just going to be able to flout regulations and go around
104.
by ckrapu 2y ago
I grew up next to Fargo and always wondered what it was like to use their product. Do you have any stories or anecdotes to share?
105.
by ckrapu 2y ago
The guy’s twitter bio says he proved P!=NP. Clearly a crank.
106.
by ckrapu 2y ago
This is an awesome idea.
107.
by ckrapu 2y ago
In my first digital design class, my physics professor (who I took 6 classes with and respect very much) took a look at my breadboard computer with no consistent color coding for groups of wires and overall bad layout. He said it was bad an
108.
by ckrapu 2y ago
Awesome link and one of the best intros I’ve seen for really digging into compute graphs of statistical models to see what’s under the hood.
109.
by ckrapu 3y ago
“non-teaching staff” includes all the research scientists, postdoc, and techs that help make the research happen. These universities are not especially good at teaching compared to SLACs. They are exceptionally good at research.
110.
by ckrapu 3y ago
For models with >100 parameters, there are theoretical reasons for why JAGS can fail badly. It has to do with the mixing time of Gibbs samplers versus Hamiltonian Monte Carlo.
111.
by ckrapu 3y ago
In case anyone wants to do this with factually grounded content, check out my site: https://www.wikistorytime.com/ Just be nice with the usage because the billing is going on my personal OpenAI API key!
112.
by ckrapu 3y ago
Definitely Hamiltonian Monte Carlo / NUTS for the last few years. From both a practical standpoint and theoretical perspective, I see no reason why it doesn't scale to millions of parameters if you have enough GPUs. Stuff like Gib
113.
by ckrapu 3y ago
Also do you have any functionality for recognizing graph structure (I.e. marginalizing out variables, identifying conjugacy, automatic reparameterization)?
114.
by ckrapu 3y ago
I would love to build a massive global macroeconomic model (vector autoregressions for exchange rates/ securities, spatiotemporal processes for raw materials like crop yields, etc) using something like this. It would just take way too
115.
by ckrapu 3y ago
I would use one of those for scenarios when I need proper measures of uncertainty like credible regions. The methods listed in this project (EM algorithm, VI) tend not to provide this as well but usually produce something that looks like a
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by ckrapu 3y ago
I’m a diehard MCMC advocate but love that the is system is built for real-time applications. Hope I get a chance to try this out sometime!
117.
by ckrapu 3y ago
Awesome. In wind mode, I see a blue line of low velocity in the middle of the North Atlantic. It’s flanked by high speed zones. Is that a real thing?
118.
by ckrapu 3y ago
First person I’ve seen on HN also from ND! And yes, TR National Park is a good one but a little hard to conveniently travel to unless you have connections to the state already.
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by ckrapu 3y ago
A better comparison would be ND and Ukraine in terms of climate.
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by ckrapu 3y ago
This definition might be true in some places but the vernacular usage of “pesticide” by users is slanted towards targeting animal life and not plants.

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