# behav: a great white shark at rest

<< Great white sharks are known for racing past the Mid-Atlantic states to get someplace else, so experts pay attention in rare cases when one not only stops, but stays put.

That's happening now along the Virginia-North Carolina border with a 10-foot, 3-inch male tracked by OCEARCH.

"It's interesting watching white shark Shaw since unlike other sharks on the Tracker, he has been hanging out off the Virginia coast for over a month," OCEARCH posted Tuesday on Facebook. >>

Mark Price. Experts puzzled as 10-foot great white shark stays a month in one spot off East Coast.  Dec 10, 2019.

https://m.phys.org/news/2019-12-experts-puzzled-foot-great-white.html

Ocearch. Dec 4, 2019

https://m.facebook.com/OCEARCH/posts/10162443074005167

Also

The long (and slow) life of Greenland shark (Somniosus microcephalus). Aug 16, 2016. 

https://flashontrack.blogspot.com/2016/08/s-ageing-long-and-slow-life-of.html

# game: apropos of perpetual hack, to bypass 'lizard' brains with a Tit-for-Tat approach

<< In (..) lizard brain, (..) "cheating" was really just "retaliation." >>

<< Where do we go from here?

Is there a way to break this cycle? >>

<<  For no matter how viscerally satisfying and rational it may appear to operate in a never-ending tit-for-tat spiral, in the long run, cooperation pays >>  

Niels Rosenquist.  How Tit-for-Tat Game Theory Hacked Politics. Jun 10, 2019. 

https://thebulwark.com/how-tit-for-tat-game-theory-has-hacked-politics/

FonT

a "catapulting" approach to bypass "lizard" brains: 

1668 - ramificata tinnula (di carmina fluitantia). Jun 9, 2005.

https://inkpi.blogspot.com/2005/06/1668-ramificata-tinnula-di-carmina.html

More

keyword "tit-for-tat" in FonT:

https://flashontrack.blogspot.com/search?q=tit-for-tat

keyword "tit-for-tat" in Notes:

https://inkpi.blogspot.com/search?q=tit-for-tat

# gst: apropos of clogging and jamming, they are not really jammed, they move steadily, if slowly, downwards

<< The first study of the way logs become pinned in rivers reveals that those seemingly trapped in a logjam move steadily, if slowly, downriver. >>

<< One of the lesser-known consequences of forest fires is logjams—river channels clogged with wood. The mechanism is straightforward. Forest fires create vast areas of dead wood. During the winter, heavy snow leads to avalanches that push thousands of the burned logs to the bottom of river valleys, where they enter the water. When the logs stretch across the river, from bank to bank, the river can no longer flow. It is this formation that has long captured the public imagination: the word "logjam" has come to mean a situation in which movement, physical or otherwise, is impossible. >>

Logjams aren’t really jammed at all, say geoscientists. Tech Rev - Emerging Technology from the arXiv. Nov 19, 2019

https://www.technologyreview.com/s/614724/logjams-arent-really-jammed-at-all-say-geoscientists/

Nakul S. Deshpande, Benjamin T. Crosby. Logjams are not jammed: measurements of log motions in Big Creek, Idaho. arXiv:1911.01518v1 [physics.geo-ph]. Nov 4, 2019.

https://arxiv.org/abs/1911.01518

# brain AI bots: a hypothetical model for exploratory bots, the pulsating perceptions of mantis shrimps

AA << examined the neuronal organization of mantis shrimp, which are among the top predatory animals of coral reefs and other shallow warm water environments. >>

They << discovered a region of the mantis shrimp brain they called the reniform ("kidney-shaped") body. The discovery sheds new light on how the crustaceans may process and integrate visual information with other sensory input. >>

<< Mantis shrimp sport the most complex visual system of any living animal. They are unique in that they have a pair of eyes that move independently of each other, each with stereoscopic vision and possessing a band of photoreceptors that can distinguish up to 12 different wavelengths as well as linear and circular polarized light.  >>

<< One of the study's crucial findings was that neural connections link the reniform bodies to centers called mushroom bodies, iconic structures of arthropod brains that are required for olfactory learning and memory. >>

<< The fact that we were now able to demonstrate that the reniform body is also connected to the mushroom body and provides information to it, suggests that olfactory processing may take place in the context of already established visual memories, >> Nicholas Strausfeld.

How mantis shrimp make sense of the world. University of Arizona.  Nov 25, 2019. 

https://m.phys.org/news/2019-11-mantis-shrimp-world.html

Hanne Halkinrud Thoen, Gabriella Hannah Wolff, et al. The reniform body: An integrative lateral protocerebral neuropil complex of Eumalacostraca identified in Stomatopoda and Brachyura. Journal of Comparative Neurology. doi: 10.1002/cne.24788. Oct 16, 2019.

https://onlinelibrary.wiley.com/doi/abs/10.1002/cne.24788

FonT

these neural models could be reproduced for "compassionate" (or even "bonobos") bots, but NEVER for "nfulaw" purposes, please

keyword  "nfulaw" in FonT

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

# gst: a bizarre extension of the Jelly Roll approach, the morphogenesis of the leaves (plant Utricularia gibba)

AA << discovered that simple shifts in gene activity in the leaf bud provide a flexible mechanism for how leaves of all shapes and sizes are made. >>

<< We've discovered a general principle by which leaves from flat sheets to needle-like and curved shapes are formed,  (..) We found that the complex leaf shapes of carnivorous plants evolved from species with flat leaves through simple shifts in gene activity in the leaf bud. What surprised us is that how such a simple mechanism could underlie such a wide diversity of leaf shapes.  (..) If you want to understand why water boils at 100°C, look for situations in which it doesn't, like the top of Mount Everest where it boils at 70°C. From that we learn the general principle that boiling point depends on air pressure. Similarly, if you want to understand why most leaves are flat, you might study exceptions, like the leaves of some carnivorous plants which form pitchers to trap prey, >> Enrico Coen.

Nature's secret recipe for making leaves. John Innes Centre. Nov 21, 2019. 

https://m.phys.org/news/2019-11-nature-secret-recipe.html

Christopher D. Whitewoods, Beatriz Goncalves, et al. Evolution of carnivorous traps from planar leaves through simple shifts in gene expression. Science. eaay5433 doi: 10.1126/science.aay5433. Nov 21, 2019

https://science.sciencemag.org/content/early/2019/11/20/science.aay5433

Also

keyword "Jelly Roll" in Notes:

https://inkpi.blogspot.com/search?q=jelly+roll

keyword "Jazz" in Notes:

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

keyword "Jelly Roll" in FonT

https://flashontrack.blogspot.com/search?q=jelly+roll

# phys: the qu-wave of the natural antibiotic gramicidin

<< One of the great counterintuitive puzzles of quantum mechanics is wave-particle duality. This is the phenomenon in which objects behave both like particles and like waves. >>

AA << for the first time, have demonstrated quantum interference in molecules of gramicidin, a natural antibiotic made up of 15 amino acids. Their work paves the way for the study of the quantum properties of  biomolecules and sets the scene for experiments that exploit the quantum nature of enzymes, DNA, and perhaps one day simple life forms such as viruses. >>

A natural biomolecule has been measured acting like a quantum wave for the first time. Mit Tech Rew - Emerging Technology from the arXiv. Nov 9, 2019. 

https://www.technologyreview.com/s/614688/a-natural-biomolecule-has-been-measured-acting-in-a-quantum-wave-for-the-first-time/

Armin Shayeghi, Philipp Rieser, et al. Matter-wave interference of a native polypeptide. arXiv:1910.14538v1 [quant-ph]. Oct 31, 2019.

https://arxiv.org/abs/1910.14538

Also

keyword "quantum" in FonT

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

# gst: apropos of elusive interference effects (at the nanoscale)

AA << investigate and characterize a subspace of the weak coupling regime between quasidiscrete and quasicontinuum localized surface plasmon resonances where infrared plasmonic Fano antiresonances appear.  >>

Kevin C. Smith, Agust Olafsson, et al.  Direct Observation of Infrared Plasmonic Fano Antiresonances by a Nanoscale Electron Probe. Phys. Rev. Lett. 123, 177401. 21 Oct 21,  2019. 

https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.123.177401

<< In 1961, atomic physicist Ugo Fano theorized that electrons harbor another and unexpected talent: They can interfere with themselves as they simultaneously take two different quantum-mechanical paths. On one path, they jump within the atom between discrete energy states. On the other path, they jump off the atom into the continuum of free space. >>

<< Fano described a complicated-and even counterintuitive-type of energy transfer that can occur in these systems, (..) It's like having two children on neighboring swings that are weakly coupled to each other: You push one child, but that swing isn't the one that moves. Instead, the other child's swing moves due to this interference. It's a one-way energy transfer. >> David Masiello.

Team uses golden 'lollipop' to observe elusive interference effect at the nanoscale. University of Washington. 

 Nov 8, 2019.

https://m.phys.org/news/2019-11-team-golden-lollipop-elusive-effect.html