Professor. University of Puerto Rico at Mayaguez.
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SW Puerto Rico seismic sequence [Almost 7 yrs update]: still active.
Data: @USGS_Quakes @redsismica @uprm
Processing/plots: #python @matplotlib #numpy #pandas #geopandas
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Why is this still defined as an active sequence rather than background seismicity? Look at the timeline plots: both the daily event count and the released energy (kilotons of TNT) have yet to return to their pre-December 2019 baselines.
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Luis Montejo retweeted
At this point I am just highlighting whole sections of documents and commenting “AI. Bad. Redo”
We need to make people feel ashamed to deliver garbage
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Luis Montejo retweeted
surprising fact: for any random variable x,
| mean(x) - median(x) | ≤ std(x)
It’s not hard to show
|μ - m| = |E(X - m)| ≤ E|X - m|
≤ E|X - μ| = E√(X - μ)²
≤ √ E(X - μ)²
= σ
originally appeared in a paper by Hotelling & Solomons Annals of Mathematical Statistics 1932
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Engineers performing seismic analyses of nuclear facilities:
Generation of response spectrum compatible records satisfying a minimum power spectral density function.
Open access: onlinelibrary.wiley.com/shar…
Python code: github.com/LuisMontejo/ReqPy…
Video: piped.video/ws7TME3iJRk?si=HHTm…
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Legalize Math
We need to legalize math in California
Today the anti-math education bureaucrats are trying to force the UC system to water down math standards to accept fake data science courses that don’t teach algebra
We interviewed @minilek, CS division chair @ Berkeley to get the low down
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Still facing widespread power outages in Puerto Rico. 24 hours after a major blackout, half of the island remains without electricity.
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Attention earthquake engineers! My code for performing spectral matching of 2 horizontal components to a RotDnn target spectrum has been revamped.
Download the updated code: github.com/LuisMontejo/REQPY
See the updates in action: piped.video/_5wFK9hNZH4?si=P-AA…
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background:
original article: doi.org/10.1177/875529302097…
applications to near-fault pulse motions: doi.org/10.1002/eqe.3896
Lear about the effect on bi-directional lateral demand of SDOF systems doi.org/10.1177/875529302110… and multi-story RC buildings doi.org/10.1177/875529302311…
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Engineers performing seismic analyses of nuclear facilities! 🚨
I've released an update to my code for calculating PSDs compatible with a design response spectrum. 🚀 This new version is significantly faster: github.com/LuisMontejo/Targe…
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Strong-Motion-Duration-Dependent Power Spectral Density Functions Compatible with Design Response Spectra.
open access: mdpi.com/2990460
video: piped.video/3SYEzu2sI_U
#earthquake #nuclear
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Luis Montejo retweeted
Students don't need a perfect teacher. Students need a happy teacher, who's gonna make them excited to come to school and grow a love for learning.
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Luis Montejo retweeted
Número de reactores nucleares en funcionamiento por país (noviembre de 2023).
Fuente: voronoiapp.com/energy/Number…
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