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mercoledì 21 febbraio 2024
# gst: when volatile droplets dance across a surface erratically (along random trajectories)
venerdì 17 novembre 2023
# behav: the self-care hypothesis of the puteketeke bird (great crested grebe, Podiceps cristatus)
lunedì 14 agosto 2023
# gst: rich behaviors from stochastic walking with variable long jumps.
lunedì 27 febbraio 2023
# life: a proposito di bizzarri scenari, qui una transizione 'a gradino' di ipotetico scenario22
venerdì 10 febbraio 2023
# gst: apropos of transitions, a perpetual dance between states of meta-stability and chaos (in brain).
domenica 13 novembre 2022
# life: Banksy, Banksy type dancers
mercoledì 10 agosto 2022
# gst: a rocking shadow dance: the broken disk.
sabato 4 dicembre 2021
# life: apropos of 'dancing at a fixed point'
giovedì 29 luglio 2021
# life: apropos of fuzzy cooperation, Ralph fuzzy mixture vs. world fuzzy dance ...
giovedì 1 aprile 2021
# behav: a case of extreme human-proto-bot love
lunedì 25 gennaio 2021
# gst: apropos of the structure of natural codes, a RNA folding knot (origami-style) dance
giovedì 10 settembre 2020
# gst: the dance (swimming and sinking behavior) of pelagic snails
sabato 4 aprile 2020
# life: 27 proteins to confine a world to a (complex 3D) virus dance
sabato 10 agosto 2019
# behav: the sophisticated dance of the sulphur-crested cockatoo (Cacatua galerita eleonora)
<< Spontaneous movement to music occurs in every human culture and is a foundation of dance. This response to music is absent in most species (including monkeys), yet it occurs in parrots, perhaps because they (like humans, and unlike monkeys) are vocal learners whose brains contain strong auditory–motor connections, conferring sophisticated audiomotor processing abilities. >>
AA << report that a sulphur-crested cockatoo (Cacatua galerita eleonora) responds to music with remarkably diverse spontaneous movements employing a variety of body parts, and suggest why parrots share this response with humans. >>
R. Joanne Jao Keehn, John R. Iversen, et al. Spontaneity and diversity of movement to music are not uniquely human. Current Biology. Volume 29, Issue 13, PR621-R622. doi: 10.1016/j.cub.2019.05.035. Jul 08, 2019. https://www.cell.com/current-biology/fulltext/S0960-9822(19)30604-9
Ed Yong. Not a Human, but a Dancer. What Snowball the parrot’s spontaneous moves teach us about ourselves. Jul 8, 2019 https://www.theatlantic.com/science/archive/2019/07/what-snowball-dancing-parrot-tells-us-about-dance/593428/
Also
"Dance", in "Notes"
https://inkpi.blogspot.com/search?q=dance
"Dance", in "FonT"
mercoledì 24 luglio 2019
# gst: the intermittent dance of liquid droplets
<< Liquid droplets bouncing on a vibrating liquid surface can execute a surprising cycle, alternating between moving and standing still. >>
Focus: Video—Stop and Go Droplets.
July 12, 2019• Physics 12, 80. https://physics.aps.org/articles/v12/80
Rahil N. Valani, Anja C. Slim, and Tapio Simula. Superwalking Droplets.
Phys. Rev. Lett. 123, 024503 – Published 12 July 2019. https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.123.024503
Also
"droplets". In FonT. https://flashontrack.blogspot.com/search?q=droplets
venerdì 11 maggio 2018
# gst: the dance of complex knots (in DNA), from mobile to jammed states
AA << show for the first time experimentally that knots can go from a mobile to a jammed state by varying an applied strain rate, and that this jamming is reversible >>
Alexander R. Klotz, Beatrice W. Soh, and Patrick S. Doyle. Motion of Knots in DNA Stretched by Elongational Fields. Phys. Rev. Lett. 120, 188003. May 3, 2018.
https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.120.188003
Anne Trafton. Chemical engineers discover how to control knots that form in DNA molecules. Massachusetts Institute of Technology. May 3, 2018.
martedì 6 febbraio 2018
# web: about ghostly followers: the real Jessica
<< The real Jessica [..] is a Minnesota teenager with a broad smile and wavy hair. [..] But on Twitter, there is a version of Jessica that none of her friends or family would recognize. >>
<< The accounts that most resemble real people [..] reveal a kind of large-scale social identity theft. At least 55,000 of the accounts use the names, profile pictures, hometowns and other personal details of real Twitter users, including minors, according to a Times data analysis. >>
<< By some calculations, as many as 48 million of Twitter’s reported active users - nearly 15 percent - are automated accounts designed to simulate real people, though the company claims that number is far lower. >>
Nicholas Confessore, Gabriel JX Dance, Richard Harris, Mark Hansen. The Follower Factory. Jan 27, 2018.
https://www.nytimes.com/interactive/2018/01/27/technology/social-media-bots.html
<< A big chunk of those "likes," "retweets," and "followers" lighting up your Twitter account may not be coming from human hands. According to new research from the University of Southern California and Indiana University, up to 15 percent of Twitter accounts are in fact bots rather than people. >>
Michael Newberg. As many as 48 million Twitter accounts aren't people, says study. March 10, 2017.
https://www.cnbc.com/2017/03/10/nearly-48-million-twitter-accounts-could-be-bots-says-study.html
Onur Varol, Emilio Ferrara, et a. Online Human-Bot Interactions: Detection, Estimation, and Characterization. arXiv: 1703.03107.v2 Mar 27, 2017.
https://arxiv.org/pdf/1703.03107.pdf
Allie Nicodemo. Why buy social bots? For 'illusion of popularity,' researcher says. Jan 30, 2018
https://m.phys.org/news/2018-01-social-bots-illusion-popularity.html
lunedì 5 giugno 2017
# s-chem: solar fuels, a catalytic "dance" to drive
AA << have identified a rapid electronic process that could aid the water-splitting reaction in cobalt-containing catalysts. Cobalt catalysts are relatively inexpensive and could replace more expensive precious metal catalysts in the production of clean energy, most notably solar fuels >>
Chemical "dance" of cobalt catalysis could pave way to solar fuels. June 3, 2017
https://m.phys.org/news/2017-06-chemical-cobalt-catalysis-pave-solar.html
Casey N. Brodsky, Ryan G. Hadt, et al. In situ characterization of cofacial Co(IV) centers in CoO cubane: modeling the high-valent active site in oxygen-evolving catalysts. PNAS (2017) vol. 114 no. 15 pp. 3855–3860 doi: 10.1073/pnas.1701816114
domenica 11 dicembre 2016
# s-dance: actually, they don't write ...
<< “If people in the literary world groan,” Mr. Engdahl (Horace Engdahl) added, “one must remind them that the gods don’t write, they dance and they sing.” >>
Joe Coscarelli. Bob Dylan Sends Warm Words but Skips Nobel Prize Ceremonies. Dec. 10, 2016.
http://mobile.nytimes.com/2016/12/10/arts/bob-dylan-skips-nobel-prize-ceremonies.html
martedì 1 novembre 2016
# s-behav: the intricate performance (dancing and singing) of a jumping spider
AA << present behavioral and neurophysiological evidence that [Jumping spiders (Salticidae)] perceive and respond to airborne acoustic stimuli, even when the distance between the animal and the sound source is relatively large (∼3 m) and with stimulus amplitudes at the position of the spider of ∼65 dB sound pressure level (SPL) >>
<< Behavioral experiments with the jumping spider Phidippus audax reveal that these animals respond to low-frequency sounds (80 Hz; 65 dB SPL) by freezing—a common anti-predatory behavior characteristic of an acoustic startle response >>
<< Neurophysiological recordings from auditory-sensitive neural units in the brains of these jumping spiders showed responses to low-frequency tones (80 Hz at ∼65 dB SPL)—recordings that also represent the first record of acoustically responsive neural units in the jumping spider brain. Responses persisted even when the distances between spider and stimulus source exceeded 3 m and under anechoic conditions. >>
Paul S. Shamble, Gil Menda, et al.
Airborne Acoustic Perception by a Jumping Spider. Current Biology. DOI: 10.1016/j.cub.2016.08.041 Publ. Oct. 13, 2016
http://www.cell.com/current-biology/fulltext/S0960-9822(16)30985-X
Jaymi Heimbuch. Jumping spider males dance and sing ... Oct. 4, 2016.
FonT: sarebbe interessante valutare se e quanto tempo prima la struttura neuroacustica del Phidippus audax sia in grado di percepire e discriminare le basse freq dei movimenti tellurici profondi che successivamente manifesteranno macro episodi di superficie (earthquake).
also:
Richard A. Lovett. Scientists Seek Foolproof Signal to Predict Earthquakes. National Geographic News. Jan. 5, 2013
http://news.nationalgeographic.com/news/2013/01/04-earthquakees-defy-prediction-efforts/
Vanessa Bates Ramirez. Earthquakes Will Be as Predictable as Hurricanes Thanks to AI. Sep 27, 2016
http://singularityhub.com/2016/09/27/earthquakes-will-be-as-predictable-as-hurricanes-thanks-to-ai