# evol-ethno: the fuzzy dispersal and interaction dynamics of ancient (early) nomads (2)

AA << present the genome of 'Denisova 11', a bone fragment from Denisova Cave (Russia)3 and show that it comes from an individual who had a Neanderthal mother and a Denisovan father. >>

<< The finding of a first-generation Neanderthal–Denisovan offspring among the small number of archaic specimens sequenced to date suggests that mixing between Late Pleistocene hominin groups was common when they met. >>

Viviane Slon, Fabrizio Mafessoni, et al. The genome of the offspring of a Neanderthal mother and a Denisovan father. Nature. Aug 22, 2018. doi: 10.1038/s41586-018-0455-x

https://www.nature.com/articles/s41586-018-0455-x

Marlowe Hood. Neandertal mother, Denisovan father-Newly-sequenced genome sheds light on interactions between ancient hominins. Aug 22, 2018.

https://m.phys.org/news/2018-08-neandertal-mother-denisovan-fathernewly-sequenced-genome.html

Also

the fuzzy dispersal and interaction dynamics of ancient (early) nomads. Dec 11, 2017.

https://flashontrack.blogspot.com/2017/12/evol-ethno-fuzzy-dispersals-and.html

# astro: when an unlucky star ventures close enough to a black hole, it spaghettifies ...

<< To be disrupted, an unlucky star must venture close enough to a black hole that gravitational tides exceed the internal gravity that binds the star together. In other words, the difference in the black hole's gravitational pull on the near and far sides of the star, along with the inertial pull as the star swings around the black hole, stretches the star out into a stream. "Basically it spaghettifies," >> James Guillochon

Joshua Sokol. Star-Swallowing Black Holes Reveal Secrets in Exotic Light Shows. August 8, 2018.

https://www.quantamagazine.org/star-swallowing-black-holes-reveal-secrets-in-exotic-light-shows-20180808/

# behav: strange "sunk cost" behaviors: to repeat the wrong choice

<< In a temporal context, a sensitivity to sunk costs arises when an individual resists ending an activity, even if it seems unproductive, because of the time already invested. In two parallel foraging tasks [AA] found that mice, rats, and humans show similar sensitivities to sunk costs in their decision-making. >>

Brian M. Sweis, Samantha V. Abram, et al. Sensitivity to "sunk costs" in mice, rats, and humans. Science  Jul 13, 2018; 361 (6398): 178-81 doi: 10.1126/science.aar8644

http://science.sciencemag.org/content/361/6398/178

Krystle Barbour. Sticking with the wrong choice. University of Minnesota Medical School. July 13, 2018.

https://m.phys.org/news/2018-07-wrong-choice.html

# drugs: proteins found in tick saliva (Rhipicephalus and Amblyomma) to treat a potentially fatal form of heart disease

<< Tick saliva contains proteins [evasins] that suppress chemokine-driven inflammation by binding and neutralizing multiple chemokines simultaneously, helping them to suck blood for several weeks without eliciting inflammation. >>

Kamayani Singh, Graham Davies, et al.  Yeast surface display identifies a family of evasins from ticks with novel polyvalent CC chemokine - binding activities. Scientific Reports. Jun 27, 2017; 7 (4267).

https://www.nature.com/articles/s41598-017-04378-1

AA << has identified several new tick evasins and shown that one of them, P991_AMBCA, from the cayenne tick found in the Americas, can bind to and block the effect of chemokines which cause inflammation in myocarditis, heart attack and stroke. >>

From bug to drug - tick saliva could be key to treating heart disease. University of Oxford. Jun 27, 2017.

https://m.phys.org/news/2017-06-bug-drugtick-saliva-key-heart.html

Also: "saliva" in:

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

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

# drugs: from a slug (A. subfuscus) mucus: strong adhesives for wet surfaces

<< Adhesives that can bond strongly to biological tissues would have broad applications ranging from tissue repair and drug delivery to wound dressings and biomedical devices. However, existing tissue adhesives are far from ideal. >>

<< Achieving high adhesion energy requires the synergy of two effects. First, the adhesive should form strong bonds with the substrate. Second, materials inside either the adhesive or the substrate (or both) should dissipate energy by hysteresis. Tissue adhesives must also show compatibility with body fluids, as well as with cells and tissues. >>

AA << report the design of a family of tough adhesives for biological applications to meet those requirements. The design is inspired by a defensive mucus secreted by slugs (Arion subfuscus) that strongly adheres to wet surfaces. >>

J Li, AD Celiz, et al. Tough adhesives for diverse wet surfaces. Science  Jul 28, 2017; 357 (6349): 378-81. doi: 10.1126/science.aah6362

http://science.sciencemag.org/content/357/6349/378 

Sticky when wet: Strong adhesive for wound healing. Slug-inspired, flexible medical bio-glue sticks to wet surfaces without toxicity. Wyss Institute for Biologically Inspired Engineering at Harvard. July 27, 2017.

https://www.sciencedaily.com/releases/2017/07/170727141508.htm

# phyto: photosynthesis also occurs through far-red light

AA << studied photosystem complexes from cyanobacteria grown in the presence of far-red light. >>

<< Kinetic measurements demonstrated that far-red light is capable of directly driving water oxidation, despite having less energy than the red light used by most photosynthetic organisms. >>

Dennis J. Nurnberg, Jennifer Morton, et al.  Photochemistry beyond the red limit in chlorophyll f - containing photosystems. Science. Jun 15, 2018: 360 (6394): 1210-3. doi: 10.1126/science.aar8313

http://science.sciencemag.org/content/360/6394/1210

Hayley Dunning. New type of photosynthesis discovered. Imperial College London. Jun 14, 2018.

https://m.phys.org/news/2018-06-photosynthesis.html

# phyto: a molecular compass to coordinate growth

<< Using this protein [protein BASL: Breaking of Asymmetry in the Stomatal Lineage] to detect the polarity field is like switching a light on in each cell across the tissue. It allows us to see that these cells all have a compass, pointing in the same direction across the leaf >>

<< In this way we will find out if, as we suspect, this molecular compass is a conserved mechanism in the development of plant shapes across the plant kingdom which could be co-opted in different ways by different branches of evolution. >> Catherine Mansfield.

Adrian Galvin. Leaves possess a molecular compass. John Innes Centre. Aug 21, 2018

https://m.phys.org/news/2018-08-molecular-compass.html 

Catherine Mansfield, Jacob L. Newman, et al. Ectopic BASL Reveals Tissue Cell Polarity throughout Leaf Development in Arabidopsis thaliana. Current Biology. 28 (16): 2638-46.E4 Aug 20, 2018 doi: 10.1016/j.cub.2018.06.019

https://www.cell.com/current-biology/fulltext/S0960-9822(18)30810-8

# ai.bot: a pulsatile semantic approach to assist in the drafting of sci/tech reports

<< At IBM Research AI, [AA] built an AI-based solution to assist analysts in preparing reports. >>

<< An AI-assisted solution can help analysts to prepare complete reports and also avoid bias based on past experience. >>

Oktie Hassanzadeh. Semantic concept discovery over event databases. IBM. July 17, 2018.

https://m.phys.org/news/2018-07-semantic-concept-discovery-event-databases.html

https://www.ibm.com/blogs/research/2018/07/semantic-concept-discovery/   

Oktie Hassanzadeh, Shari Trewin, Alfio Massimiliano Gliozzo. Semantic Concept Discovery Over Event Databases. ESWC. Feb 14, 2018.

https://2018.eswc-conferences.org/paper_182/

FonT

sarebbe davvero singolare, sorprendente, se, dopo l'analisi dei dati, una AI "decidesse" di scrivere il report finale in forma poetica, magari con un approccio quasistocastico, fuzzy, per la stesura del testo ...

# life: the ultimate explanation

<< Is the ultimate explanation for what’s happened to us is that everyone is a moron?  >> 06:01 Aug 18, 2018

https://twitter.com/NewYorker/status/1030847282269306881

Masha Gessen. How QAnon and Sacha Baron Cohen Speak to the Same Desperate Need. Aug 8, 2018.

https://www.newyorker.com/news/our-columnists/how-qanon-and-sacha-baron-cohen-speak-to-the-same-desperate-need

FonT

qualcosa di simile a "moron"  pare fosse l'opinione del giovane Mr. Mark  Zuckerberg sui suoi giovani colleghi studenti all'inizio del suo incredibile successo; chissa' se nel frattempo MZ ha cambiato opinione ...

facebook: a synthetic perspective from the deep brain, by Mark. Apr 14, 2018.

https://flashontrack.blogspot.com/2018/04/web-facebook-synthetic-perspective-from.html

Also

"facebook" in:

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

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

# gst: ordered patterns found when mixing granular matter

AA << report remarkably persistent mixing and non-mixing regions in a three-dimensional dynamical system where randomness is expected. A spherical shell half-filled with dry non-cohesive particles and periodically rotated about two horizontal axes generates complex structures that vary non-trivially with the rotation angles. >>

Zafir Zaman, Mengqi Yu, et al.  Persistent structures in a three-dimensional dynamical system with flowing and non-flowing regions. Nature Comm vol 9, no 3122 (2018)  doi: 10.1038/s41467-018-05508-7

https://www.nature.com/articles/s41467-018-05508-7   

Emily Ayshford. When mixing granular matter, order among disorder. Northwestern University. Aug 14, 2018.

https://m.phys.org/news/2018-08-granular-disorder.html   

# gst: the art of designing a self-assembling origami

<< (..) to create smart structures - objects that can collapse, absorb energy, and spring back into place using the geometric principles of origami. >>

<< Smart structures simply change their shape based on a response to a change in the environment. >>

Sophia Fox-Sowell. How origami might reshape the future of everything. Northeastern University. Aug 2, 2018.

https://m.phys.org/news/2018-08-origami-reshape-future.html

Also

"origami"

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

# 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