Translate

sabato 29 settembre 2018

# evol: precision in work among Neanderthals

<< Neanderthals were also more similar to modern humans in their physical expression than previously thought. The study, which analysed Neanderthal hand and arm bones, reveals that these individuals didn’t actually rely primarily on force in their daily activities – they used precision grips just like we do. >>

Francis Wenban-Smith. Neanderthals were no brutes - research reveals they may have been precision workers. University of Southampton. Sep 26, 2018.

https://theconversation.com/neanderthals-were-no-brutes-research-reveals-they-may-have-been-precision-workers-103858 

Fotios Alexandros Karakostis, Gerhard Hotz, et al. Evidence for precision grasping in Neandertal daily activities. Science Advances  26 Sep 2018: Vol. 4, no. 9, eaat2369 doi: 10.1126/sciadv.aat2369

http://advances.sciencemag.org/content/4/9/eaat2369

Also

"Neanderthal"

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

venerdì 28 settembre 2018

# psych: a view around dark personalities, by Morten et al.

<< Egoism, Machiavellianism, narcissism, psychopathy, sadism, spitefulness and others are among the traits of the malevolent side of human personality. As results from a recently published German-Danish research project show, these traits share a common "dark core." People with one of these tendencies are also likely to have one or more of the others. >>

Psychologists define the 'dark core of personality'. University of Copenhagen. Sep 27, 2018.

https://m.medicalxpress.com/news/2018-09-psychologists-dark-core-personality.html

Moshagen Morten,Hilbig Benjamin E.,Zettler Ingo. The dark core of personality. Psychological Review, Jul 12 , 2018

http://psycnet.apa.org/doiLanding?doi=10.1037%2Frev0000111

Also

"silvo sadico"  (by quasistochastic poetry)

https://inkpi.blogspot.com/search?q=silvo+sadico

Charlie vs Donald
(never boring with chaos and tit-for-tat theories)

https://flashontrack.blogspot.com/2016/06/s-gst-never-boring-with-chaos-and-tit.html

giovedì 27 settembre 2018

# evol: adaptability by genome duplications (A. kamchatica)

<< "With these results, we have demonstrated on a molecular-genetic level that genome duplications can positively affect the adaptability of organisms," says plant scientist Timothy Paape. The multiple gene copies enable the plant to assume advantageous mutations while keeping an original copy of important genes. >>

Genome duplication drives evolution of species. University of Zurich. Sep 25, 2018.

https://m.phys.org/news/2018-09-genome-duplication-evolution-species.html

Timothy Paape, Roman V. Briskine, et al. Patterns of polymorphism and selection in the subgenomes of the allopolyploid Arabidopsis kamchatica.
Nature Comm 9 3909 Sep 25, 2018

https://www.nature.com/articles/s41467-018-06108-1

mercoledì 26 settembre 2018

# tech: self-assembling origami, smart options for architecture

<< Origami and high-performance textiles are transforming architecture plans for smart human habitats >>

Origami opens up smart options for architecture on the Moon and Mars. Europlanet. Sep 21, 2018.

https://m.phys.org/news/2018-09-origami-smart-options-architecture-moon.html

lunedì 24 settembre 2018

# chem: a 'ghost' bond with a partner that isn't there

<< A peculiar type of atom can be induced to form a ‘ghost’ chemical bond with a nonexistent atom, according to new calculations. >>

<< A highly excited atom that includes a loosely bound electron has the weird ability to form 'trilobite' chemical bonds. Such bonds are created by the small attraction between the electron and a second atom in its lowest energy state. The electron is most often found at long distances from its host nucleus, 'reaching out' to the second atom. A visualization of the electron’s likely location in this ultra-long-range bond depicts a series of elongated shells that resemble the segments of an extinct sea animal called a trilobite. >>

<< Through computer simulations, [AA] found that the same effect can be engineered even in the absence of the second atom by exposing the excited atom to a rapid series of electric and magnetic pulses. In the resultant ghost chemical bond, the excited electron appears to reach out to the nonexistent second atom. Such a bond could be formed in a laboratory setting, the authors write. >>

How an atom forms a 'ghost' bond with a partner that isn't there. Nature. Sep 21, 2018

https://www.nature.com/articles/d41586-018-06745-y

<< The existence of such a ghost chemical bond in which an electron reaches out from one atom to a nonexistent second atom is a consequence of the high level degeneracy. >>

Matthew T. Eiles, Zhengjia Tong, Chris H. Greene. Theoretical Prediction of the Creation and Observation of a Ghost Trilobite Chemical Bond. Phys. Rev. Lett. 121, 113203. Sep 12, 2018.

https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.121.113203

domenica 23 settembre 2018

# phys: amorphous, but elastic

<< Long-range stress correlations, like those DeGiuli and others have found in amorphous solids, are characteristic of an elastic solid-a material that bounces back to its original shape after being deformed. >>

Emanuela Del Gado. Viewpoint: Constructing a Theory for Amorphous Solids. Sep 10, 2018.

https://physics.aps.org/articles/v11/88

sabato 22 settembre 2018

# game: where cooperation is flexible, not fixed

<<
- Assortment on cooperation is a characteristic feature of hunter-gatherer life
- Assortment persists despite substantial migration and residential mixing
- No evidence for stable social types or a preference to live with cooperators
- Individuals respond in kind to the cooperative behavior of their group members
>>

Kristopher M. Smith, Tomas Larroucau, et al.  Hunter-Gatherers Maintain Assortativity in Cooperation despite High Levels of Residential Change and Mixing. Curr Biol doi: 10.1016/j.cub.2018.07.064 Sep 20, 2018.

https://www.cell.com/current-biology/fulltext/S0960-9822(18)30994-1

Nomadic hunter-gatherers show that cooperation is flexible, not fixed. University of Pennsylvania.  Sep 20, 2018.

https://m.phys.org/news/2018-09-nomadic-hunter-gatherers-cooperation-flexible.html