# gst: to reach detectability of a weak signal, they add background noise

<< In contrast to most sensors, for which noise is a problem that should be suppressed, (AA) found that adding just the right amount of background noise can actually increase a signal too weak for sensing by normal sensors, to a level that can reach detectability. >>

Walt Mills. To make a better sensor, just add noise. Pennsylvania State University. Sep 03, 2020. 

https://phys.org/news/2020-09-sensor-noise.html   

<< In this article, (AA) adopt a radical approach for next generation ultra-low-power sensor design by embracing the evolutionary success of animals with extraordinary sensory information processing capabilities that allow them to survive in extreme and resource constrained environments. Stochastic resonance (SR) is one of those astounding phenomena, where noise, which is considered detrimental for electronic circuits and communication systems, plays a constructive role in the detection of weak signals. >>

Akhil Dodda, Aaryan Oberoi, et al. 

Stochastic resonance in MoS2 photodetector. Nat Commun 11, 4406 (2020). doi: 10.1038/ s41467-020-18195-0. Sep 2, 2020.

https://www.nature.com/articles/s41467-020-18195-0   

Also 

keyword 'noise' in FonT

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

Also 

plus ambiguity and noise. Notes. Jul 06, 2007  (quasi-stochastic poetry)

https://inkpi.blogspot.com/2007/07/2136-plus-ambiguity-and-noise.html

# blues; New Moon Jelly Roll Freedom Rockers. Vol. 1 (Stony Plain). Sep 4, 2020.

<< In 2007, while rolling through the American night in a ramshackle retirement home vehicle badly disguised as a tour bus, blues legend Charlie Musselwhite and North Mississippi Allstars' guitarist Luther Dickinson engaged in conversation. The younger man related Alvin Youngblood Hart's philosophical desire to live as a "freedom rocker." The wily elder bluesman listened to his words, then looked out the window and knowingly pointed at the rising moon. He replied: "New Moon Freedom Rockers." Back in Mississippi at the Zebra Ranch studio, Musselwhite and Cody and Luther Dickinson joined forces with their dad, roots rock legend Jim Dickinson (who promptly added the words "Jelly Roll" to the band's name), Alvin Hart, and Jimbo Mathus, with NMA bassist Chris Chew and Paul Taylor as guests. They circled chairs, placed mikes, and hit "record." Afterwards, the session tapes were archived. They sat in the vault until Jim Dickinson passed in 2009, and they became apocryphal. Stony Plain's Holger Peterson contacted Luther and Cody about releasing them. >>

<< Here's to hoping there's enough left over for a second volume. >> 

Thom Jurek. AllMusic Review. Sep 4, 2020. 

https://www.allmusic.com/album/new-moon-jelly-roll-freedom-rockers-vol-1-mw0003403214

https://www.youtube.com/channel/UCmlTKgY9YawHtVpwtOv5Z7Q

Also 

keyword 'Jelly Roll' in Notes (quasi-stochastic poetry)

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

keyword 'blues' in Notes (quasi-stochastic poetry)

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

keyword 'Jelly Roll' in FonT

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

# behav: pheromones to bamboozle bark beetles

<< While the trees are suffering due to the heat and the drought, the pests are proliferating rampantly in the warm weather: A pair of European spruce bark beetles, for example, can produce up to 30,000 offspring. >>

<< The method involves treating raw wood, i.e. harvested wood, with substances that were originally extracted from the bark beetles' pheromones. These messenger substances are not only used as a means of communication between the bark beetles themselves, they also attract predators, for example the ant beetle. >>

<< The foreign messenger substances are therefore selective: The enemies of the bark beetles are attracted by these substances, but other bark beetles are not. In the best-case scenario, the foreign substance acts as a deterrent. As larvae, the ant beetles eat the early stages of the bark beetle that burrow into the wood. These predatory beetles also patrol the bark, where they catch and eat approaching bark beetles. In this way, they can prevent or reduce the infestation. >>

<< The forest owners will no longer be buying insecticides in specialist shops, but natural substances that they can attach to stacks of raw wood, >> Michael Muller. 

Bamboozling the bark beetles. Dresden University of Technology. Aug 31, 2020.

https://phys.org/news/2020-08-bamboozling-bark-beetles.html

Also

keyword 'beetle' in FonT

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

# gst: the generation of 'fuzzy' signals for fine skeletal muscle control

<< Minute differences in individual muscle cell contractions allow the entire muscle to flex with greater control and accuracy. Long dismissed as "noise" or error, experts now suspect that biological systems may have evolved to include unavoidable variation as a form of information in their communication channels. >>

Different responses in individual cells give muscles more control. University of Tokyo. Sep 01, 2020. 

https://phys.org/news/2020-09-responses-individual-cells-muscles.html   

Takumi Wada, Ken-ichi Hironaka, et al.  Single-Cell Information Analysis Reveals That Skeletal Muscles Incorporate Cell-to-Cell Variability as Information Not Noise.  Cell Rep. Vol 32, Issue 9, 108051.  doi: 10.1016/ j.celrep.2020.108051. Sep 01, 2020. 

https://www.cell.com/cell-reports/fulltext/S2211-1247(20)31036-6

Also

J. J. Collins and C. J. De Luca. Random Walking during Quiet Standing. Phys. Rev. Lett. 73, 764 – Aug 1, 1994.

https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.73.764  

# gst: apropos of the variety in the ways liquid jets break up

<< When a liquid exits a nozzle and encounters something it cannot immediately mix into—a gas, for example—it forms a cylinder. Quickly, small surface perturbations and various forces cause the liquid tube to break apart into droplets. The entire cylinder either pinches off into droplets one at a time at the tip, takes on a wavy or corkscrew-like structure, or atomizes into a fine spray. >> 

<< Our results show that the gas and liquid flows are equally important in the interface region, an idea neglected by most other studies, (Nathan Speirs).  The irregular shapes of the droplets formed are quite interesting as well, (Kenneth Langley) >> 

<< There's so much variety in the ways liquid jets break up. (Nathan Speirs) >>  

King Abdullah. Slippery superfluids push jets to breaking point. University of Science and Technology. Aug 31, 2020. 

https://phys.org/news/2020-08-slippery-superfluids-jets.html 

<< Past studies have shown that liquid jet breakup behavior can be classified into five regimes: Rayleigh, first wind, sinuous, second wind, and atomization. By experimentally examining the breakup of superfluid and normal liquid 4^He in an atmosphere of its own vapor, (AA) investigate the evolution of the jet behavior >>

N. B. Speirs, K. R. Langley, et al. Jet breakup in superfluid and normal liquid  4^He. Phys. Rev. Fluids 5, 044001. Apr 2, 2020.

https://journals.aps.org/prfluids/abstract/10.1103/PhysRevFluids.5.044001    

# jazz: apropos of 'Ornithology', Charlie Parker would have turned 100y on 29 Aug 2020

<< Through Parker, complexity in jazz grew considerably. He aimed – and flew – higher, literally, by performing melodic lines that jumped to the next octave, overtly appropriating notes from a higher register. Like an alto riding piggyback on a soprano, and vice versa. This progressive musical concept required alterations in the supporting chords too. It enriched the accompanying harmonies with additional notes from these very same higher octaves. >>

Emile Wennekes. Charlie Parker: celebrating a century of the genius who changed jazz forever. Aug 28, 2020. 

https://theconversation.com/charlie-parker-celebrating-a-century-of-the-genius-who-changed-jazz-forever-145065   

Also

'Ornitology'  

https://youtu.be/OKQcgu8dbuw      

https://www.youtube.com/c/CharlieParkerOfficial

Also 

keyword 'carmina fluitantia' in Notes (quasi-stochastic poetry)

https://inkpi.blogspot.com/search?q=carmina+fluitantia

keyword 'jazz' 

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

keyword 'jazz' in FonT

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

# gst: self-assembly of chemistry with music

<< audible sound can control chemical reactions in solution by continuously supplying energy sources into the interface between air and the solution.  The sound-controlled air-liquid chemical interactions 'painted' intriguing and aesthetic patterns on the surface and bulk of the solution.>>

<< The Pied Piper of Hamelin tells the mythological story of a pied piper who lured rats away from the city of Hamelin by enchanting them with the music from his magical pipe. With music working like a fuel for such artistic control in chemistry, our study has shown that even synthetic molecules can exhibit life-like behavior—listening and following a musical track, >> Rahul Dev Mukhopadhyay. 

Seeing chemical reactions with music. Institute for Basic Science. Aug 10, 2020.

https://phys.org/news/2020-08-chemical-reactions-music.html

<< the patterns obtained from artificially designed out-of-equilibrium chemical oscillating networks (such as the Belousov–Zhabotinsky reaction for example) are unpredictable and difficult to control spatiotemporally, albeit reproducible over subsequent cycles. Here, (AA) show that it is possible to generate reproducible spatiotemporal patterns in out-of-equilibrium chemical reactions and self-assembling systems in water in the presence of sound waves, which act as a guiding physical stimulus. >>

Hwang, I., Mukhopadhyay, R.D., Dhasaiyan, P. et al. Audible sound-controlled spatiotemporal patterns in out-of-equilibrium systems. Nat. Chem. 12, 808–813 (2020). doi: 10.1038/ s41557-020-0516-2. Aug 10, 2020.

https://www.nature.com/articles/s41557-020-0516-2