the explanation of flirting in terms of Russian spies.
Diamond shops in Rotterdam now require #biometrics to enter. Wear sunglasses, they won’t open the door. Wal-Mart has tested out #facial-recognition in stores. #security #privacy
"Pure" is Albert Gräf’s 2009 successor to his well-known #term-rewriting #programming-language “Q”, originally designed for #DSP for computer music.
#Robots can kill weeds plaguing #agriculture without using #herbicides, using #computer-vision.
#slow-motion #video of #agriculture weeding #robots running #ROS.
Gorgeous #video of non-circular #gears made on a #laser-cutter. #2d-cutting
short #video of diving into a diving bell made of a net and plastic membrane.
#video of #machining a bronze part for an eccentric drive mechanism on a manual #lathe and milling machine. He spends 20+ minutes getting it set up in the right position. Lots of time spent on workholding, dimension transfer with adjustable parallels, centering, indicating, deburring, that kind of thing. The author, Tom Lipton, talks slowly and clearly enough that you can play the videos at 2× with no problem.
#Ambay, commonly used in #herbal #medicine and also known as Cecropia adenopus and Cecropia pachystachya, lowers blood pressure in vivo in rats, but toxicity is low — no lethality was shown with up to four to six times the effective dose of 100 mg/kg of methanol (!) extract. #toxicology
Cecropia glazioui (related to #ambay) toxicity is low. #herbal #medicine #toxicology
Cecropia pachystachya (#ambay) was administered orally at 0.76 g/kg to mice; caused kidney enlargement but no behavioral or therapeutic effects. #herbal #medicine #toxicology
#Abstract says Cecropia pachystachya (#ambay) extract lowers blood pressure (#hypotension) in rats at 90–300 mg/kg and caused death by respiratory paralysis at 320 mg/kg (3g dry leaves/kg), which is almost an order of magnitude higher than the “ethnotherapeutic” dose. #herbal #medicine #toxicology
#abstract says Cecropia pachystachya (#ambay) is effective against P. falciparum malaria in mice; the active ingredient is tormentic acid; roots have the best therapeutic index (i.e. lowest toxicity at active dose). #herbal #medicine
#pdf #paper on anti-leishmaniasis activity of #ambay (Cecropia pachystachya). #herbal #medicine
Cecropia pachystachya (#ambay) is an anti-inflammatory and maybe antioxidant. No word on toxicity. #herbal #medicine #paper
Jennifer #Granick’s keynote on #human-rights on the internet.
2001 #pdf #paper introducing "random forests", which is rumored to be the most versatile #machine-learning algorithm. Unfortunately, the author trademarked the name, so you probably have to call it something else if you implement it.
John Costella claims his edge detection algorithm for #computer-vision is better than standard #algorithms, using a bilinear upsampling kernel.
explains why standard edge-detection #algorithms are as good as John Costella’s. #computer-vision
“From NAND to Tetris: Building a Modern Computer from First Principles,” for the “Elements of Computing Systems” book by Nisan and Schocken.
a Fresnel reflector #solar concentrator made of cones of metal roofing sheets.