Human folly for 02015-09-29

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• Eh300Brochure (aldinc.com):

  #energy-harvesting module brochure #electronics #hardware #pdf

• P (cap.ee.ic.ac.uk):

  (no description)

• Acsnano (pubs.acs.org):

  Ultrathin, Rollable, Paper-Based "Triboelectric Nanogenerator" for Acoustic #Energy-Harvesting and Self-Powered Sound Recording #abstract #hardware #electronics

• Blog (tikalon.com):

  #energy-harvesting with electret microphones #electronics #hardware

• Horowitz s (ufdcimages.uflib.ufl.edu):

  Development of a MEMS-Based Acoustic Energy Harvester, a doctoral dissertation #paper #energy-harvesting #hardware #electronics #mems #pdf

• Login (ieeexplore.ieee.org):

  #energy-harvesting #abstract “A high efficiency DC MIC for PV energy harvest in FREEDM systems”

• Vsd+09 (web.eecs.umich.edu):

  Micropower #energy-harvesting #pdf #paper

• 2015 04 States China team explore energy (phys.org):

  the #triboelectric-nanogenerator thing described in physorg. #energy-harvesting

• P (cap.ee.ic.ac.uk):

  “Proof of Concept of #Energy-Harvesting From Aero Acoustic Noise” #pdf of only 4 pages. Talks about cavity noise (#Helmholtz resonators?) from airflow.

• Dianne feinstein husband threaten univ calif demanding ban excessive Israel criticism (theintercept.com):

  #Greenwald on “boycott, divest, sanction” anti-Israel campaigns and #free-speech.

• Worlds largest delta style 3D printer can print nearly zero cost housing out of mud (inhabitat.com):

  #3d-printer with mud

• (haaretz.com):

  #greenwald wasn’t bar mitzvahed but he's from an unobservant Jewish family.

• Flowers (gigamonkeys.com):

  Seibel explains the process of engineering innovation at Twitter and the interplay between centrifugal and centripetal forces.

• Medieval style fighting a quick myth Buster guide (reddit.com):

  spears, not swords

• La storia di WASP a ballaro (wasproject.it):

  the #3d-printer with mud (adobe actually) isn’t done yet

• Guy spends 6 months 1500 to make a sandwich entirely from scratch (consumerist.com):

  Andy George of “how to make everything” decided to make a sandwich starting by drying out sea salt and planting wheat. It took him six months. #bootstrapping

• Paper (cs.brown.edu):

  #JS #semantics in a core JS, by Arjun Guha, Claudiu Saftoiu (??), and Shriram Krishnamurthi. Their core “λJS” is block-scoped and has side effects (computed property assignment expressions), with a Felleisen-Hieb small-step semantics, but not variable mutation or statement sequencing. It elides constant-property access e.x but not object literals {x:e} in favor of computed lookup. #bootstrapping #pdf

• Vallejo (www1.icsi.berkeley.edu):

  this kidnapping story is weirder than anything I’ve ever seen in fiction.

• Measuring muscle strength (sciencelearn.org.nz):

  estimate of your one-repetition maximum strength is (0.033 · repetitions to failure · load) + load, when repetitions to failure is around ten or so.

• Vint Cerf wants combat digital dark age digital vellum (geeksnack.com):

  oh interesting, Vint Cerf is interested in #archival with the archival #virtual-machine approach, and therefore #bootstrapping, under the name #digital-vellum.

• Rfc7049 (tools.ietf.org):

  CBOR is a new binary #serialization #file-format: basically binary JSON plus byte strings, integers, cyclic references, and extensible type tags, designed for “decades of use”. Prefix-decodable but not suffix-decodable.

• Magnetostriction (en.wikipedia.org):

  Interesting, Terfenol-D can reach 2000 microstrains of magnetostriction at saturation. Seems to be what they used for the now defunct SoundBug. #materials

• (hitachi.com):

  #archival on fused silica discs at 1.5 GB/in² (18.6 terabits / m² — fucking folk units).

• Cerf news (cmu.edu):

  Vint Cerf on his "digital vellum" #archival project and how it’s related to the OLIVE project led by Mahadev Satyanarayanan at CMU. #video

• (olivearchive.org):

  The Olive Executable Archive is an #archival project that tries to save whole #virtual-machine images. “For legal reasons, the VMs are currently accessible only to our research collaborators.” They’re using qemu and KVM so far, so basically they aren’t trying to solve any of the hard problems.

• Permacoin (cs.umd.edu):

  Elaine Shi’s work with Andrew Miller and Jonathan Katz for #archival using a #Bitcoin kind of system, using “proof of retrievability” instead of “proof of work”.