krasin

12 ms·

91.
by krasin 2y ago
From the same author, I can recommend "Daemon", "Freedom" and "Delta-V" (the first book). Just stay away from "Delta-V" book 2. :)
92.
by krasin 2y ago
What's interesting is that for isotope production, fusion reactors are already the most economical option. You don't even need to collect any energy back, if the goal is to produce isotopes. Among others, Shine Technologies is try
93.
by krasin 2y ago
Desalination costs are dominated by energy costs. And I am making a point that California is in a perfect position to solve its water problems with the excess of solar capacity by using it to desalinate ocean water during the time of day wh
94.
by krasin 2y ago
For instance, it's 9:30am in California, and a lot of coastal locations show negative prices for electricity: https://www.caiso.com/TodaysOutlook/Pages/prices.html It will be like that until 2pm or so, which
95.
by krasin 2y ago
> those negative power prices are doing alot for generating water from mana I honestly fail to understand what you mean. Care to rephrase / elaborate?
96.
by krasin 2y ago
> Huh, avocados require tonnes of water and California has recurring droughts. California has abundance of solar capacity deployed, to the point of negative prices of electricity around noon ([1]), which means more electricity is produce
97.
by krasin 2y ago
It's a true wonder that we even have a $16K humanoid robot on the market. :) We are really in the early days. And this $16K humanoid robot is by far (like, 5x-10x) cheaper than other alternatives on the market. I might even buy one, de
98.
by krasin 2y ago
> The warranty on the base model is only 8 months, and for the higher end model only a year. This is not good! They are also almost impossible to self-repair & service beyond changing motors & batteries. And spare parts are not s
99.
by krasin 2y ago
> There’s a huge part of the equation you’re forgetting in all of this. Storage. Let me come and defend the California strategy for the energy production. As can be seen on the California grid status page ([1]) (click on the Supply tab,
100.
by krasin 2y ago
> Microreactors have no chance at all in the world because nuclear scales very well with size, and as a result, is bound to be very expensive when small. Solar is cheap because it has hit the economy of scale. Hell, fences made of solar
101.
by krasin 2y ago
> Nuclear has already lost. Classic nuclear did lose. Microreactors have a chance unless irrational fear prevents it from entering the game. And yes, it gives me a great pleasure to see the rapid deployment of wind & solar installati
102.
by krasin 2y ago
> Micro Chernobyl disaster generator. Nice. It's sad that some people would rather see the climate change than to accept that nuclear is not that dangerous. Not only Chernobyl had one of the worst designs, which would not be approve
103.
by krasin 2y ago
> How much of it is real? You are linking to images of the robot in a static pose. Last year, I had a chance to see Unitree H1 in action, in person. It's their previous model, a bigger one. Still, it was very real, very capable and
104.
by krasin 2y ago
It's strictly A. Unitree is a pretty bullshit-free company; but since it's coming from China, certain cultural differences can be perceived by the American public.
105.
by krasin 2y ago
It's more important to require no connectivity, or only limit connectivity to the servers controlled by domestic companies and ensure that they have sources for all firmware within the car, than to tax the car imports. Modern cars are
106.
by krasin 2y ago
> There's really only one space company in the US today Rocket Lab ([1]) is very decent and has a rapid launch cadence ([2]), even though their rockets are smaller than Falcon 9 (for now). They launched 8 rockets in 2023, 5 rockets
107.
by krasin 2y ago
Related: https://vast.ai is good and cheap. Just don't put any sensitive data on these GPU machines. I've been a happy user of vast.ai for some time now.
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by krasin 2y ago
Oh, cool! That gives me hope.
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by krasin 2y ago
> They have an id that's usually in the form "user@host" but that's unlikely to be a valid email address. They are valid email addresses most of the time, in my experience. :)
110.
by krasin 2y ago
Many people forget that their email is included in the public key that is presented to the ssh server by default. So, the email collection form is actually somewhat redundant. But yes, I added my share of funny email addresses to their list
111.
by krasin 2y ago
I believe it's just a stub for collecting emails. Nothing more. Edit: somebody was able to order coffee through them (see below).
112.
by krasin 2y ago
Update2: got it to 100% training accuracy, 99% test accuracy with (2, 2, 2) shape. Changes: 1. Increased the training set from 1000 to 100k samples. This solved overfitting. 2. In the dataset generation, slightly reduced noise (0.1 -> 0.
113.
by krasin 2y ago
Actually, that would be fantastic for NVIDIA shares; 1. A new architecture would make all/most of these upcoming Transformer accelerators obsolete => back to GPUs. 2. Higher performance LLMs on GPUs => we can speed up LLMs with 1
114.
by krasin 2y ago
I've spent some time playing with their Jupyter notebooks. The most useful (to me, anyway) is their Example_3_classfication.ipynb ([1]). It works as advertised with the parameters selected by the authors, but if we modified the network
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by krasin 2y ago
The official apology for the video ([1]). TL,DR: it's Lorenz force. Automatic translation to English: > First of all, I would like to apologize to everyone. > We would like to express our sincere apologies for causing controversy
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by krasin 2y ago
On /r/lk99, one comment strikes ([1]): >This is a cheap trick - the coil wrapping around the sample literally creates an electromagnet. > The reason it's not unstable are because the two ends of the wire are holding the
117.
by krasin 2y ago
It appears that it cost a lot (a not just the money; also time + hassle). I quote https://en.wikipedia.org/wiki/New_York_City_Cabaret_Law#Caba... >All applicants for a cabaret license had to be fingerprinted; to pro
118.
by krasin 2y ago
I would like to give this response a signal boost, based on the fact that the comment author knows a lot about PCB design, prototyping and manufacturing.
119.
by krasin 2y ago
In this case, it's not going to be changed by moving to Shenzhen, as you can really only cut on shipping times. But yeah, finding a vendor that can produce flexible boards faster than 2 weeks should be possible, even while you're
120.
by krasin 2y ago
> I'm building wearable tech, and the JLCPCB lead times are my biggest bottleneck for iteration. 3-4 weeks is way too long. Hm... my experience with JLCPCB is that I get 7-10 days iterations from sending my gerbers to getting my boa

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