#Facebook uses #phone #geolocation information to suggest “friends”.
How Google does #source-control, using an in-house developed system called Piper, which replaced Perforce.
The #Datalog #query-language can be implemented efficiently using the "differential dataflow" technique, and the result supports #incremental update. This blog post currently contains some typos in code copied and pasted from Wikipedia. Contains another item in the “configuration to outperform a single thread” sweepstakes.
apparently #APL, R, Matlab, #Numpy, etc., are now all part of a new field called "array programming" that started in 2013. Keynoted by Morten Kromberg from Dyalog. #HPC focus.
Maciej’s speech about the surveillance economy and the dangers of intellectual arrogance and treating the world as software.
Barbara Williamson, founder of the Sandstone free-love colony that Gay Talese wrote “Thy Neighbor’s Wife” about, later got into big cat rescue. Now she lives with a dangerous lynx. #polyamory
Dan Piponi explains why #computability (of “codata”) entails continuity
in a before-and-after experiment, reading Harry Potter reduced #racism in Italian schoolkids (Vezzali, Stathi, et al., 2014)
“The Report of the Independent Commission on the #Voting System” 1998
A photo of #Lauri-Love looking like David Bowie
Images of ancient Roman #weaponry #history #archaeology
“Thrombosis remains a significant and potentially catastrophic complication of #polyethylene-terephthalate (Dacron) prosthetic vascular graft implantation.” Not clear whether boiling it in lye actually helped. #materials #science #medicine #paper
"Tenara" is an architectural #textile woven of expanded polytetrafluoroethylene (PTFE, teflon) fibers, with a lifetime of 25 years or so in the sun. #architecture #materials
#Tenara PTFE thread on Amazon: US$120 per spool, 8 ounces, 1150 yards, 19 pounds breaking strength. Not sure what the density or diameter is, though. #materials
This guy did some #science with some different sail #textile materials and found that #Tenara was the only one that wasn’t badly degraded by a couple of months of humidity and UV. #materials
#security #pdf #paper on reconstructing encrypted phone conversations from bit rate variations
"Singular" is a #computer-algebra system for polynomial computations, with special emphasis on commutative and non-commutative algebra, algebraic geometry, and singularity theory. It is free and open-source under the GNU General Public Licence. #math
In simulated fighter jet engagements, a Raspberry Pi running ALPHA was able to consistently beat a human fighter jet pilot: “Not only was Lee not able to score a kill against ALPHA after repeated attempts, he was shot out of the air every time during protracted engagements in the simulator.” Using “genetic fuzzy trees” rather than neural networks. Apparently this is Nick Ernest’s dissertation work at the University of Cincinnati, funded by AFRL.
