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lunedì 12 agosto 2019

# gst: an approach to delay solitary states within complex networks

AA << present a technique to engineer solitary states by means of delayed links in a network of neural oscillators and in coupled chaotic maps. Solitary states are intriguing partial synchronization patterns, where a synchronized cluster coexists with solitary nodes displaced from this cluster and distributed randomly over the network. >>

<< It is shown that the extent of displacement and the position of solitary elements can be completely controlled by the choice (values) and positions (locations) of the incorporated delays, reshaping the delay engineered solitary states in the network. >>

Leonhard Schulen, Saptarshi Ghosh, et al. Delay engineered solitary states in complex networks. arXiv:1908.01295v1 [nlin.AO] Aug 4, 2019.

https://arxiv.org/abs/1908.01295

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"

https://flashontrack.blogspot.com/search?q=dance

venerdì 9 agosto 2019

# life: a case of extreme swing (2): "and we will or (vice versa) we won’t"

<< "This is formal impeachment proceedings," Nadler (Jerry Nadler) said in a CNN interview. "We are investigating all the evidence, gathering the evidence. And we will [at the] conclusion of this - hopefully by the end of the year - vote to vote articles of impeachment to the House floor. Or we won’t. That’s a decision that we’ll have to make. But that’s exactly the process we’re in right now." >>

Andrew Desiderio. Nadler: "This is formal impeachment proceedings". Politico. Aug 8, 2019    https://www.politico.com/story/2019/08/08/nadler-this-is-formal-impeachment-proceedings-1454360   

Also

a case of extreme swing: clearly "He is not not" or vice versa "He is yes yes" . FonT. May 30, 2019.    https://flashontrack.blogspot.com/2019/05/life-case-of-extreme-swing-clearly-is.html

giovedì 8 agosto 2019

# behav: acceptance into non-natal groups of Barbary macaques, showing concern and consolation

Such observations << challenges concerns that only infants and young juveniles may be accepted into non-natal groups, suggesting that even older confiscated juveniles could be candidates for release. This also adds to the literature on behavioural responses to distressed and injured individuals, demonstrating the capacity of wild monkeys to exhibit affiliative behaviours even towards unfamiliar distressed conspecifics, providing a rare example of potential consolation of an unknown individual.  >>

Liz A. D. Campbell. Fostering of a wild, injured, juvenile by a neighbouring group: implications for rehabilitation and release of Barbary macaques confiscated from illegal trade. Primates.  Volume 60, Issue 4, pp 339–345. Jul 2019.    https://link.springer.com/article/10.1007%2Fs10329-019-00729-w   

Unprecedented display of concern and 'consolation' toward an unknown monkey offers hope for endangered macaques. University of Oxford. Jul 10, 2019.   https://m.phys.org/news/2019-07-unprecedented-consolation-unknown-monkey-endangered.html  

mercoledì 7 agosto 2019

# game: 'pulsing' Parrondo to jump (and win) between two losing games

<< Parrondo’s paradox, in which losing strategies can be combined to produce winning outcomes, has received much attention in mathematics and the physical sciences; >>

<< In this review paper, the authors examine a large range of recent developments of Parrondo’s paradox in biology, across ecology and evolution, genetics, social and behavioral systems, cellular processes, and disease. >>

Kang Hao Cheong, Jin Ming Koh, Michael C. Jones. Paradoxical Survival: Examining the Parrondo Effect across Biology. BioEssays. Volume 41, Issue 6. doi: 10.1002/bies.201900027. May 27,  2019.   https://onlinelibrary.wiley.com/doi/abs/10.1002/bies.201900027  

Paradoxical Survival: Examining the Parrondo effect across biology. Singapore University of Technology and Design. Aug 5, 2019.   https://www.sciencedaily.com/releases/2019/08/190805134043.htm 

Also

"Parrondo" in: "Notes" & "FonT"

https://inkpi.blogspot.com/search?q=parrondo

https://flashontrack.blogspot.com/search?q=parrondo

venerdì 2 agosto 2019

# gst: dissolve into randomness, the kinetics

AA << have developed mathematical tools that send that shot across the bow-they determine when randomness emerges in any stochastic (random) system, answering a long-standing question: When does randomness set in during a random walk? >>

<< We are trying to describe an effect as exactly as possible irrespective of the cause. >> Rajan K. Chakrabarty

<< physicists normally solve problems by mathematically describing a cause and effect and marrying the two for a solution. But this new tool cares nothing about the cause, only about mathematically capturing the effect. >>

Tony Fitzpatrick. New tools reveal prelude to chaos. Washington University in St. Louis. Jun 6, 2018

https://m.phys.org/news/2018-06-tools-reveal-prelude-chaos.html  

Pai Liu, William R. Heinson, et al. Establishing the kinetics of ballistic-to-diffusive transition using directional statistics. Phys. Rev. E 97, 042102. Apr 4, 2018.

https://journals.aps.org/pre/abstract/10.1103/PhysRevE.97.042102  

giovedì 1 agosto 2019

# ecol: a umbrella coordination; the Stratospheric Controlled Perturbation Experiment (SCoPEx)

<<  Researchers plan to spray sunlight-reflecting particles into the stratosphere, an approach that could ultimately be used to quickly lower the planet’s temperature. >>

<< The idea is simple: spray a bunch of particles into the stratosphere, and they will cool the planet by reflecting some of the Sun’s rays back into space. >>

<< The first phase - a US$3-million test involving two flights of a steerable balloon 20 kilometres above the southwest United States — could launch as early as the first half of 2019. Once in place, the experiment would release small plumes of calcium carbonate, each of around 100 grams, roughly equivalent to the amount found in an average bottle of off-the-shelf antacid. The balloon would then turn around to observe how the particles disperse. >>

<< The SCoPEx team’s initial stratospheric experiments will focus on calcium carbonate, which is expected to absorb less heat than sulfates and to have less impact on ozone. But textbook answers - and even Dai’s (Zhen Dai) tabletop device - can’t capture the full picture. “We actually don’t know what it would do, because it doesn’t exist in the stratosphere,” Keutsch (Frank Keutsch) says. “That sets up a red flag.” >>

Jeff Tollefson. First sun-dimming experiment will test a way to cool Earth. Nature. Nov 27, 2018; Correction Nov 30, 2018.   https://www.nature.com/articles/d41586-018-07533-4  

<< SCoPEx is a scientific experiment to advance understanding of stratospheric aerosols that could be relevant to solar geoengineering. >>

SCoPEx. Stratospheric Controlled Perturbation Experiment. Keutsch Research Group. Harvard University. 12 Oxford Street. Cambridge, MA 02138   https://projects.iq.harvard.edu/keutschgroup/scopex