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giovedì 15 luglio 2021
# gst: apropos of turbulence, self-similarity of turbulent flows with internal and external intermittency
venerdì 17 agosto 2018
# gst: the art of designing a self-assembling origami
<< (..) to create smart structures - objects that can collapse, absorb energy, and spring back into place using the geometric principles of origami. >>
<< Smart structures simply change their shape based on a response to a change in the environment. >>
Sophia Fox-Sowell. How origami might reshape the future of everything. Northeastern University. Aug 2, 2018.
https://m.phys.org/news/2018-08-origami-reshape-future.html
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"origami"
mercoledì 17 ottobre 2018
# gst: when a 'ricequake' repeat perpetually and propagate
<< puffed rice and milk can serve as a stand-in to simulate collapsing ice shelves and rockfill dams. >>
<< Intrigued by their findings, the researchers created what they call a "crushing wave model," which they believe could prove useful for describing the behavior of much larger collapse events. >>
Bob Yirka. Using puffed rice to simulate collapsing ice shelves and rockfill dams. Oct 15, 2018.
https://m.phys.org/news/2018-10-puffed-rice-simulate-collapsing-ice.html
<< These "ricequakes" repeat perpetually during the experiments and propagate upward through the material. >>
Itai Einav, Francois Guillard. Tracking time with ricequakes in partially soaked brittle porous media. Science Advances Oct 12, 2018. Vol. 4, no. 10, eaat6961. doi: 10.1126/sciadv.aat6961.
domenica 27 novembre 2016
# s-ecol: largely irreversible changes in the Arctic: 19 regime shifts to complex (chaotic?) transitions
<< Chapter 3 of the report examines 19 documented or potential regime shifts in the Arctic – from a shift to sea- ice- free summers, to collapse of different Arctic fisheries, to the transformation of landscapes: from bogs to peatlands, or from tundra to boreal forest or to steppe >>
Arctic Council (2016). Arctic Resilience Report. M. Carson and G. Peterson (eds). Stockholm Environment Institute and Stockholm Resilience Centre, Stockholm.
https://oaarchive.arctic-council.org/handle/11374/1838
https://oaarchive.arctic-council.org/bitstream/handle/11374/1838/ARR_full_report_low-res_161114b.pdf