# gst: apropos interacting cracks

<< When two cracks propagate in a material like concrete or metal, they tend to follow paths that bring them closer to each other. However, some cracks exhibit repulsion for a short distance before reverting to the attractive mode of propagation. >>

Michael Schirber. Synopsis: Why Some Cracks Repel. June 20, 2018.

https://physics.aps.org/synopsis-for/10.1103/PhysRevLett.120.255501

Marie-Emeline Schwaab, Thierry Biben, et al. Interacting Cracks Obey a Multiscale Attractive to Repulsive Transition. Phys. Rev. Lett. 120, 255501. June 20, 2018.

https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.120.255501  

Also: "crack"

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

# acad: the 2nd MIT Media Lab Disobedience Award

<< Nominations are now open for the second MIT Media Lab Disobedience Award, which carries a 250,000 USD cash prize, no strings attached. This award will go to a person or group engaged in what we believe is an extraordinary example of disobedience for the benefit of society: work that impacts society in positive ways, and is consistent with a set of key principles, including nonviolence, creativity, courage, and responsibility for one’s actions. >>

https://www.media.mit.edu/posts/disobedience-award/  

FonT

che mat-tachioni questi MITiani ...

# trade: positive effects of bubbles during innovations

AA << study is the first to look at the occurrence of bubbles in association with a large set of specific innovations introduced across two centuries, and to measure bubbles using statistical tests. [AA] are also the first to show that firms can benefit from bubbles driven by innovation. This is in contrast to the conventional thinking that that bubbles are detrimental that have few, if any, positive effects. >>

Ashley Kilgore. Innovation and speculation drive stock market bubble activity, according to new study. Institute for Operations Research and the Management Sciences.  Aug 1, 2018.

https://m.phys.org/news/2018-08-speculation-stock.html

<< Using a sample of 51 major innovations introduced between 1825 and 2000, [AA] test for bubbles in the stock prices of parent firms subsequent to the commercialization of these innovations. [AA] identify bubbles in 73% of the cases. >>

Alina Sorescu, Sorin M. Sorescu, et al. Two Centuries of Innovations and Stock Market Bubbles. Marketing Science 37 (4) Jul 16, 2018 doi: 10.1287/mksc.2018.1095

https://pubsonline.informs.org/doi/abs/10.1287/mksc.2018.1095

# age: cryobiosis; long-term nematodes survival (30-40k y.) from late pleistocenic permafrost (P. aff. detritophagus - Rhabditida - and P. aff. parvus - Plectida).

AA << have obtained the first data demonstrating the capability of multicellular organisms for longterm cryobiosis in permafrost deposits of the Arctic. The viable soil nematodes Panagrolaimus aff. detritophagus (Rhabditida) and Plectus aff. parvus (Plectida) were isolated from the samples of Pleistocene permafrost deposits of the Kolyma River Lowland. The duration of natural cryopreservation of the nematodes corresponds to the age of the deposits, 30 000-40 000 years. >>

Shatilovicha AV, Tchesunov AV, et al.
Viable Nematodes from Late  Pleistocene Permafrost of the Kolyma River Lowland.  Dokl Biol Sci. 2018 May;480(1):100-102. doi: 10.1134/S0012496618030079. Epub 2018 Jul 16.

https://www.ncbi.nlm.nih.gov/m/pubmed/30009350/  

FonT

questa news la devo a mia moglie Tamara,  anche lei incredibile
nomade di labirinti ...

# trade: the immediate pump and dump in cryptocoin trading activities

<< Dozens of trading groups are manipulating the price of cryptocurrencies on some of the largest online exchanges, generating at least $825 million in trading activity over the past six months - and hundreds of millions in losses for those caught on the wrong side, according to a Wall Street Journal analysis. >>

<< In a review of trading data and online communications among traders between January and the end of July, the Journal identified 175 "pump and dump" schemes involving 121 different digital coins, which show a sudden rise in price and an equally sudden fall minutes later. >>

Shane Shifflett, Paul Vigna. Some Traders Are Talking Up Cryptocurrencies, Then Dumping Them, Costing Others Millions. Aug. 5, 2018.

https://www.wsj.com/graphics/cryptocurrency-schemes-generate-big-coin/

Pump and dump, così si manipolano le criptovalute. Aug. 6, 2018.

https://www.milanofinanza.it/news/pump-and-dump-cosi-si-manipolano-le-criptovalute-201808061936404179

# gene: a single gene seems to confer reproductive status in ants (Ooceraea biroi).

<< a single gene is consistently up-regulated in queens. This gene seems to confer reproductive status through integration with increased nutrition. In a clonal ant, larval signals disrupt this gene up-regulation, destabilizing the division of reproductive labor. Increasing levels of the associated peptide override these larval signals and establish eusociality. >>

AA << findings suggest a simple model for the origin of ant eusociality via nutritionally determined reproductive asymmetries potentially amplified by larval signals. >>

Vikram Chandra, Ingrid Fetter-Pruneda, et al. Social regulation of insulin signaling and the evolution of eusociality in ants. Science.  Jul 27, 2018 Vol. 361, Issue 6400, pp. 398-402. doi: 10.1126/science.aar5723

http://science.sciencemag.org/content/361/6400/398   

# ai.bot: AI-BOT machine learning could become as a mystical Oracle of Delphi

<< In January this year, scientists did just that. They used machine learning to accurately predict the outcome of a chaotic system over a much longer duration than had been thought possible. And the machine did that just by observing the system’s dynamics, without any knowledge of the underlying equations. >>

<< Such AI oracles are already guiding self-driving cars and stock market investments, and will soon predict which drugs will be effective against a bacterium - and what the weather will look like two weeks ahead. They will make these predictions much better than we ever could have, and they will do it without recourse to our mathematical models and equations. >>

Amar Vutha. Could machine learning mean the end of understanding in science? Aug 2, 2018.

https://theconversation.com/could-machine-learning-mean-the-end-of-understanding-in-science-98995  

FonT

percio' secondo l'opinione di Amar Vutha per i manuali delle "funzioni speciali" ( ad es. https://dlmf.nist.gov/ ) la prospettiva sarebbe sostanzialmente la loro mesta archiviazione nei solitari polverosi scaffali di scantinati accademici ...

Also

<< ho i dati osservazionali, attraverso questi  ho messo a punto un modello non del tutto campato in aria, vediamo cosa succede se ... >>

# rmx-s-gst: anomalous formation of molecules after vapor deposition. Dec 31, 2015.

https://flashontrack.blogspot.com/2015/12/rmx-s-gst-anomalous-formation-of.html