iokevins
What is this? These pages are a collection of facts (identities, approximations, inequalities, relations, ...) about matrices and matters relating to them. It is collected in this form for the convenience of anyone who wants a quick desktop reference.
In case you were, uh, expecting to see Keanu Reeves in a kitchen apron.
https://ericlippert.com/2015/04/27/wizards-and-warriors-part...
An ORM *is* your data layer
Net neutrality bill thottled by AT&T’s friends in the California legislature
Router Build: Arch, ESPRESSObin, Ubiquity Access Point
(Aside: forgot to turn off my extension and so it appeared as, 'Sierra Leone just ran the first "Multiple copies of a giant Excel spreadsheet"-based election')
Amazon’s Checkout-Free Grocery Store Is Opening to the Public
"Order-to-shelf, or OTS, is a tightly controlled system designed to streamline and track product purchases, displays, storage, and sales. Under OTS, employees largely bypass stock rooms and carry products directly from delivery trucks to store shelves. It is meant to help Whole Foods cut costs, better manage inventory, reduce waste, and clear out storage."
...
"A reduced back stock means that any unexpected increase in shopper demand or a product-shipment delay can result in out-of-stock items across every department, multiple employees said."
http://www.marktwainproject.org/landing_writings.shtml
I listened to the audiobook version, as my preference/availability. Highly recommended.
"It is common to experience swarms of earthquakes at Mount St. Helens."
"...there is no immediate danger of an eruption."
Beijing to build $2B AI research park: Xinhua
"Since news of the vandalism got out, however, Go Fund Me efforts on Wild Hill Honey's behalf have raised more than $35,000. Engelhardt posted to the company's Facebook page that the money would allow them to rebuild and start operating again in the spring."
"Prior work has suggested that energy is involved when quarks fuse together. In studying the properties of one such fusing, a doubly-charmed baryon, the researchers found that it took 130 MeV to force the quarks into such a particular configuration, but they also found that fusing the quarks together wound up releasing 12 MeV more than that. Intrigued by their finding, they quickly focused on bottom quarks, which are much heavier—calculations showed it took 230 MeV to fuse such quarks, but doing so resulted in a net release of approximately 138 MeV, which the team calculated was approximately eight times more than the amount released during hydrogen fusion.
Since hydrogen fusion lies at the heart of hydrogen bombs, the researchers were quite naturally alarmed at their findings. So much so that they considered not publishing their results. But subsequent calculations showed that it would be impossible to cause a chain reaction with quarks because they exist for too short a period of time—approximately one picosecond—not long enough to set off another baryon. They decay into much smaller, less dangerous lighter quarks."