[Elecraft] Elecraft CW Net Announcement

kevin kevinr at coho.net
Sun Apr 17 00:38:43 EDT 2022


Good Evening,

     It started snowing last week before either net.  It hasn't really 
stopped since.  After the first 24 inches there has been only a few 
inches more.  Power went out before midnight on Sunday.  Around 8 AM it 
came back on for a few minutes.  Then it came back on again around 7 
PM.  The next day it was out for 12 hours.

    Luckily, I had a thumb drive of journal papers and two fully charged 
laptops.  I spent quiet time next to the wood stove reading about new 
techniques to analyze systems of PDEs, like the Navier-Stokes or Maxwell 
equations.  The techniques join neural networks to a finite element mesh 
of governing equations.  These constraints reduce the search space.

    The sun is fairly blank but the flux rate remains elevated. There 
have been some ejections from the back side but nothing headed toward 
us.  The auroral oval shows a medium level of activity, I expect noisy 
signals with moderate QSB.  However, there is nothing like checking 
conditions yourself.



Please join us on (or near):


14050 kHz at 2200z Sunday (3 PM PDT Sunday)
  7047 kHz at 2330z Monday (4:30 PM PDT Sunday)


73,  Kevin.  KD5ONS


-


Some of the links to what I read this week:

https://www.quantamagazine.org/deep-learning-poised-to-blow-up-famed-fluid-equations-20220412/
https://www.quantamagazine.org/what-makes-the-hardest-equations-in-physics-so-difficult-20180116/
https://www.quantamagazine.org/latest-neural-nets-solve-worlds-hardest-equations-faster-than-ever-before-20210419/
https://github.com/benmoseley/harmonic-oscillator-pinn/blob/main/Harmonic%20oscillator%20PINN.ipynb
https://arxiv.org/abs/2005.03448
https://github.com/benmoseley/harmonic-oscillator-pinn
https://arxiv.org/pdf/2107.07871.pdf
https://github.com/benmoseley/FBPINNs/blob/main/fbpinns/paper_main_3D.py
https://mltp2020.com/Presentations/Karniadakis_NSF_MLTP2020.pdf
https://en.wikipedia.org/wiki/Physics-informed_neural_networks
https://www.frontiersin.org/articles/10.3389/fdata.2021.669097/full


Which lead me to a technique for natural language programming:

https://en.wikipedia.org/wiki/Transformer_(machine_learning_model)
https://towardsdatascience.com/transformer-neural-network-step-by-step-breakdown-of-the-beast-b3e096dc857f
https://www.techtarget.com/searchenterpriseai/feature/Transformer-neural-networks-are-shaking-up-AI
https://jalammar.github.io/illustrated-transformer/




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