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lunedì 25 gennaio 2021
# gst: apropos of the structure of natural codes, a RNA folding knot (origami-style) dance
domenica 7 febbraio 2016
# rmx-s-bot: new ways of moving: a snake dance
<< Snake locomotion is a source of inspiration for technology: graceful, silent, adaptable and efficient, it can be implemented on devices designed for the most diverse applications, from space exploration to medicine. >>
Snake gait: Science observes nature to invent new ways of moving. February 5, 2016
http://www.sciencedaily.com/releases/2016/02/160205105331.htm
http://www.eurekalert.org/pub_releases/2016-02/isoa-sg020516.php
Giancarlo Cicconofri, Antonio DeSimone. A study of snake-like locomotion through the analysis of a flexible robot model. Proceedings of the Royal Society A: Mathematical, Physical and Engineering Science, 2015; 471 (2184): 20150054 DOI: 10.1098/rspa.2015.0054
http://rspa.royalsocietypublishing.org/content/471/2184/20150054
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
sabato 7 giugno 2025
# life: apropos of Trump-Musk dipole, an immediate MJQ apoptotic rift
giovedì 1 aprile 2021
# behav: a case of extreme human-proto-bot love
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.
venerdì 17 novembre 2023
# behav: the self-care hypothesis of the puteketeke bird (great crested grebe, Podiceps cristatus)
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
lunedì 14 agosto 2023
# gst: rich behaviors from stochastic walking with variable long jumps.
sabato 4 dicembre 2021
# life: apropos of 'dancing at a fixed point'
mercoledì 21 febbraio 2024
# gst: when volatile droplets dance across a surface erratically (along random trajectories)
mercoledì 10 agosto 2022
# gst: a rocking shadow dance: the broken disk.
giovedì 29 luglio 2021
# life: apropos of fuzzy cooperation, Ralph fuzzy mixture vs. world fuzzy dance ...
mercoledì 20 gennaio 2016
# rmx-s-chem: a precise dance with 1 nm bubbles
<< ‘Bubble pen’ can precisely write patterns with nanoparticles as small as 1 nanometer >>
<< With this we might see the dawn of the nano machines >> (comment by OranjeeGeneral, january 18, 2016)
http://www.kurzweilai.net/bubble-pen-can-precisely-write-patterns-with-nanoparticles-as-small-as-1-nanometer
L. Lin, X. Peng, et al. Bubble-Pen Lithography. Nano Letters. Vol. 16: Issue. 1: Pages. 701-708. Publication Date (Web): December 17, 2015 DOI: 10.1021/acs.nanolett.5b04524