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venerdì 10 febbraio 2023
# gst: apropos of transitions, a perpetual dance between states of meta-stability and chaos (in brain).
mercoledì 19 maggio 2021
# gst: a scenario in which System Theory meets Poetry, bird's-eye vistas into a primitive chaos
mercoledì 3 marzo 2021
# gst: labyrinth chaos: revisiting the elegant, chaotic and hyperchaotic walks
venerdì 30 marzo 2018
# gst: quantum chaos to approach the evolution of a dynamic system
<< A study on the evolution of dynamic systems [..] has unexpectedly led to a better understanding of the chaos in the quantum world >>
<< The tools needed to explore the rigidity of dynamic systems [..] far exceeded those currently available, forcing the team to learn from neighboring disciplines >>
<< As a by-product of this process, researchers have identified the applicability of this project to quantum mechanics, which has led them to formulate a new theorem of thermodynamic quantum chaos combining ideas from large networks. Large networks — such as Big Data, social networks, convolutional neural networks of Artificial Intelligence models — which, although commonly used today, do not yet have adequate theories to explain their operation >>
Shakes Gilles. Study of dynamical systems leads to better understanding of quantum chaos. March 27, 2018.
mercoledì 30 giugno 2021
# gst: weird Nature; randomly arranged nanowire networks seem to behave, at the edge of chaos, like cortical neuronal cultures
martedì 5 aprile 2022
# gst: the solitary route to chimera states.
martedì 24 ottobre 2017
# gst: it would use chaos to compute efficiently
<< When you’re really harried, you probably feel like your head is brimful of chaos. You’re pretty close. Neuroscientists say your brain operates in a regime termed the “edge of chaos,” and it’s actually a good thing. It’s a state that allows for fast, efficient analog computation of the kind that can solve problems that grow vastly more difficult as they become bigger in size >>
<< A micrograph shows the construction of a Mott memristor composed of an 8-nanometer-thick layer of niobium dioxide between two layers of titanium nitride >>
Samuel K. Moore. Memristor-Driven Analog Compute Engine Would Use Chaos to Compute Efficiently. Oct 9, 2017
FonT
"When you’re really harried" ... only?
lunedì 14 ottobre 2019
# gst: chaotic dynamics modulate complex systems, even in the presence of extrinsic and intrinsic noise
AA << find that chaotic dynamics modulates gene expression and up-regulates certain families of low-affinity genes, even in the presence of extrinsic and intrinsic noise. Furthermore, this leads to an increase in the production of protein complexes and the efficiency of their assembly. Finally, (AA) show how chaotic dynamics creates a heterogeneous population of cell states, and describe how this can be beneficial in multi-toxic environments. >>
Mathias L. Heltberg, Sandeep Krishna, Mogens H. Jensen. On chaotic dynamics in transcription factors and the associated effects in differential gene regulation. Nature Comm. volume 10, Article number: 71 Jan 8, 2019. https://www.nature.com/articles/s41467-018-07932-1
<< Chaos in bodily regulation can optimize our immune system according to a recent discovery made by researchers at the University of Copenhagen's Niels Bohr Institute. The discovery may prove to be of great significance for avoiding serious diseases such as cancer and diabetes. >>
Chaos in the body tunes up your immune system. Niels Bohr Institute.
Jan 16, 2019. https://m.medicalxpress.com/news/2019-01-chaos-body-tunes-immune.html
Also
'l'immaginifico "tracciante ... che svagola nella macina ...' in: 2149 - onda di predazione (to knock seals off the ice). Notes. Dec 17, 2007. https://inkpi.blogspot.com/2007/12/2149-onda-di-predazione-to-knock-seals.html
Also
never boring with chaos and tit-for-tat theories. F.on.T. Jun 12, 2016. https://flashontrack.blogspot.com/2016/06/s-gst-never-boring-with-chaos-and-tit.html
lunedì 3 settembre 2018
# gst: a chaos-inducing approach against superbugs evolution
<< The CHAOS [Controlled Hindrance of Adaptation of OrganismS] method takes advantage of this effect, pulling multiple genetic levers in order to build up stress on the bacterial cell and eventually trigger a cascading failure, leaving the bug more vulnerable to current treatments. The technique does not alter the bug's DNA itself, only the expression of individual genes, similar to the way a coded message is rendered useless without the proper decryption. >>
<< We now have a way to cut off the evolutionary pathways of some of the nastiest bugs and potentially prevent future bugs from emerging at all, >> Peter Otoupal
Chaos-inducing genetic approach stymies antibiotic-resistant superbugs. University of Colorado at Boulder. Sept 3, 2018.
https://m.phys.org/news/2018-09-chaos-inducing-genetic-approach-stymies-antibiotic-resistant.html
<< While individual perturbations improved fitness during antibiotic exposure, multiplexed perturbations caused large fitness loss in a significant epistatic fashion. >>
Peter B. Otoupal, William T. Cordell, et al. Multiplexed deactivated CRISPR-Cas9 gene expression perturbations deter bacterial adaptation by inducing negative epistasis. Comm Biol 1 (129) Sept 3, 2018
martedì 21 giugno 2022
# gst: even tight-binding billiards could exhibit chaotic behaviors
lunedì 27 dicembre 2021
# gst: reshaping Kuramoto model, when a collective dynamics becomes chaotic, with a surprisingly weak coupling.
sabato 13 aprile 2024
# gst: evolving disorder and chaos induces acceleration of elastic waves.
lunedì 9 aprile 2018
# brain: actually there is chaos in the brain
<< Besides some empirical findings of chaos at different time scales, the focus is on theoretical modeling of change processes explaining and simulating chaotic dynamics. It will be illustrated how some common factors of psychotherapeutic change and psychological hypotheses on motivation, emotion regulation, and information processing of the client's functioning can be integrated into a comprehensive nonlinear model of human change processes >>
Schiepek GK, Viol K, et al. Psychotherapy Is Chaotic - (Not Only) in a Computational World. Front Psychol. 2017 Apr 24;8:379. doi: 10.3389/fpsyg.2017.00379. eCollection 2017.
https://www.ncbi.nlm.nih.gov/m/pubmed/28484401/
<< Cambridge-based researchers provide new evidence that the human brain lives "on the edge of chaos", at a critical transition point between randomness and order. The study provides experimental data on an idea previously fraught with theoretical speculation >>
Public Library of Science. The Human Brain Is On The Edge Of Chaos. Mar 23, 2009.
https://www.sciencedaily.com/releases/2009/03/090319224532.htm
Manfred G. Kitzbichler, Marie L. Smith, et al. Broadband Criticality of Human Brain Network Synchronization. PLoS Comput Biol 2009; 5 (3): e1000314. doi: 10.1371/journal.pcbi.1000314. Mar 20, 2009.
http://journals.plos.org/ploscompbiol/article?id=10.1371/journal.pcbi.1000314
sabato 14 gennaio 2023
# gst: approaching chaotic dynamics to trace the complexity of rough nanostructured surfaces
martedì 20 novembre 2018
# gst: chaos from a double pendulum
<< Three double pendulums, all starting with near identical initial conditions, all rapidly diverging. >>
Ari Rubinsztejn. Chaos and the Double Pendulum. Nov 19, 2018.
https://gereshes.com/2018/11/19/chaos-and-the-double-pendulum
sabato 28 dicembre 2019
# gst: scrambling does not necessitate chaos.
sabato 17 dicembre 2022
# gst: transitions, how two saddles can increase the transient times.
sabato 19 febbraio 2022
# gst: Parrondo paradox revisited, a chaotic switching approach
mercoledì 30 marzo 2022
# gst: solitary wave billiards
martedì 12 luglio 2016
# s-phys: "entanglement entropy of a qubit", the begin ...
<< All systems are fundamentally quantum systems (..) but the means of describing in a quantum sense the chaotic behavior of, say, air molecules in an evacuated room, remains limited >>
<< To investigate, [AA] devised an experiment using three quantum bits, the basic computational units of the quantum computer >>
<< By manipulating these qubits with electronic pulses, [AA] caused them to interact, rotate and evolve in the quantum analog of a highly sensitive classical [chaotic] system >>
<< The result is a map of entanglement entropy of a qubit that, over time, comes to strongly resemble that of classical dynamics — the regions of entanglement in the quantum map resemble the regions of chaos on the classical map >>
Sonia Fernandez. Researchers at UCSB blur the line between classical and quantum physics by connecting chaos and entanglement. Monday, July 11, 2016
http://www.news.ucsb.edu/2016/017014/entanglement-chaos
C. Neill, P. Roushan, et al. Ergodic dynamics and thermalization in an isolated quantum system. Nature Physics (2016) DOI: doi:10.1038/nphys3830. Published online 11 July 2016
http://www.nature.com/nphys/journal/vaop/ncurrent/full/nphys3830.html