andor.oxinst.com/learning/view/article/measuring-resistance-of-a-superconducting-sample-with-a-dry-cryostat Not a video, but well done, by Oxford Instruments.
CIA 2010 covert communication websites 2013 DNS census MX records Updated 2025-07-11 +Created 1970-01-01
Let' see if there's anything in records/mx.xz.
mx.csv is 21GB.
They do have
" in the files to escape commas so:mx.pyWould have been better with csvkit: stackoverflow.com/questions/36287982/bash-parse-csv-with-quotes-commas-and-newlines
import csv
import sys
writer = csv.writer(sys.stdout)
with open('mx.csv', 'r') as f:
reader = csv.reader(f)
for row in reader:
writer.writerow([row[0], row[3]])then:
# uniq not amazing as there are often two or three slightly different records repeated on multiple timestamps, but down to 11 GB
python3 mx.py | uniq > mx-uniq.csv
sqlite3 mx.sqlite 'create table t(d text, m text)'
# 13 GB
time sqlite3 mx.sqlite ".import --csv --skip 1 'mx-uniq.csv' t"
# 41 GB
time sqlite3 mx.sqlite 'create index td on t(d)'
time sqlite3 mx.sqlite 'create index tm on t(m)'
time sqlite3 mx.sqlite 'create index tdm on t(d, m)'
# Remove dupes.
# Rows: 150m
time sqlite3 mx.sqlite <<EOF
delete from t
where rowid not in (
select min(rowid)
from t
group by d, m
)
EOF
# 15 GB
time sqlite3 mx.sqlite vacuumLet's see what the hits use:
awk -F, 'NR>1{ print $2 }' ../media/cia-2010-covert-communication-websites/hits.csv | xargs -I{} sqlite3 mx.sqlite "select distinct * from t where d = '{}'"At around 267 total hits, only 84 have MX records, and from those that do, almost all of them have exactly:with only three exceptions:We need to count out of the totals!which gives, ~18M, so nope, it is too much by itself...
smtp.secureserver.net
mailstore1.secureserver.netdailynewsandsports.com|dailynewsandsports.com
inews-today.com|mail.inews-today.com
just-kidding-news.com|just-kidding-news.comsqlite3 mx.sqlite "select count(*) from t where m = 'mailstore1.secureserver.net'"Let's try to use that to reduce where
av.sqlite from 2013 DNS Census virtual host cleanup a bit further:time sqlite3 mx.sqlite '.mode csv' "attach 'aiddcu.sqlite' as 'av'" '.load ./ip' "select ipi2s(av.t.i), av.t.d from av.t inner join t as mx on av.t.d = mx.d and mx.m = 'mailstore1.secureserver.net' order by av.t.i asc" > avm.csvavm stands for av with mx pruning. This leaves us with only ~500k entries left. With one more figerprint we could do a Wayback Machine CDX scanning scan.Let's check that we still have most our hits in there:At 267 hits we got 81, so all are still present.
grep -f <(awk -F, 'NR>1{print $2}' /home/ciro/bak/git/media/cia-2010-covert-communication-websites/hits.csv) avm.csvsecureserver is a hosting provider, we can see their blank page e.g. at: web.archive.org/web/20110128152204/http://emmano.com/. security.stackexchange.com/questions/12610/why-did-secureserver-net-godaddy-access-my-gmail-account/12616#12616 comments:
secureserver.net is the name GoDaddy use as the reverse DNS for IP addresses used for dedicated/virtual server hosting
Mentioned at: aws.amazon.com/ec2/instance-types/g4/
TODO meaning of "nd"? "n" presumably means Nvidia, but what is the "d"? Compare it g4ad.xlarge which has AMD GPUs. aws.amazon.com/ec2/instance-types/g4/ mentions:
Solutions for the Schrodinger equation with multiple particles Updated 2025-07-11 +Created 1970-01-01
Bibliography:
- Quantum Mechanics for Engineers by Leon van Dommelen (2011) "5. Multiple-Particle Systems"
www.ibiblio.org/chinese-music/html/traditional.html contains an amazing orchestral version for di flute TODO identify! When attempting to upload to YouTube, it identifies as "Su Wu Tending the Sheep" and give a name "Chen Tao", but no further information. Chen Tao is presumably this dude: www.barduschinamusic.org/chen-tao-dizi | www.melodyofdragon.org/chentao.html 陈涛
baike.baidu.com/item/苏武牧羊/5532#11_2 mentions that it comes from an erhu concerto composed by Peng Xiuwen
The sadness of the erhu perfectly fits the role and mood of the story! Brilliant!
This is quite mind blowing. The laws of physics actually differentiate between particles and antiparticles moving in opposite directions!!!
Only the weak interaction however does it of the fundamental interactions.
Some historical remarks on Surely You're Joking, Mr. Feynman section "The 7 Percent Solution".
It gets worse of course with cP Violation.
Exampes under nodejs/sequelize/raw:
- nodejs/sequelize/raw/index.js: Sequelize raw query hello world. Ideally one should never use a raw query in a real project. We use raw examples mostly as a SQL tutorial under SQL example, and will not comment on them much further on this section.
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