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martedì 13 giugno 2017

# s-gst: imaging a soliton, first in the centre (of the condensate) rather than at the edges

<< When a periodic waveform is subjected to small perturbations to its amplitude and phase, any nonlinearity in the system can lead to its fragmentation — a so-called modulation instability. The phenomenon often results in the formation of solitons — self-reinforcing solitary wave packets — aligned in a train >>

AA << found that [ in ultracold 7Li atoms ] solitons developed first in the centre of the condensate rather than at the edges, suggesting that the seed for the modulation instability is dominated by noise, which may be technical, thermal or quantum in origin >>

Yun Li. Ultracold gases. Search for the seed. doi:10.1038/nphys4172

http://www.nature.com/nphys/journal/v13/n6/full/nphys4172.html

Jason H. V. Nguyen, De Luo, Randall G. Hulet. Formation of matter-wave soliton trains by modulational instability. Science 2017, 356 (6336), 422–426. doi: 10.1126/science.aal3220. 28 Apr 2017.

http://science.sciencemag.org/content/356/6336/422

lunedì 12 giugno 2017

# s-phys: photonic ('natural') intelligence: a laser chaos can make decisions

<< [..] over the past several years, researchers have demonstrated that physical objects [..] can also "make decisions" by responding to feedback from their environments >>

AA << has demonstrated that the ultrafast, chaotic oscillatory dynamics in lasers makes these devices capable of decision making and reinforcement learning, which is one of the major components of machine learning >>

<< [..] this is the first demonstration of ultrafast photonic decision making or reinforcement learning, and it opens the doors to future research on "photonic intelligence" >>

AA << utilize the computational power inherent in physical phenomena [..] The computational power of physical phenomena is based on 'infinite degrees of freedom,' and its resulting 'nonlocality of interactions' and 'fluctuations'  >>

AA << call such systems 'natural Intelligence' in contrast to artificial intelligence" >>

Lisa Zyga. Researchers investigate decision-making by physical phenomena. June  2,  2017.

https://m.phys.org/news/2017-06-decision-making-physical-phenomena.html

Makoto Naruse, Yuta Terashima, et al. Ultrafast photonic reinforcement learning based on laser chaos. arXiv:1704.04379 [physics.optics]

https://arxiv.org/abs/1704.04379

sabato 10 giugno 2017

# n-art: works in the moment, by Brett

<< “There’s definitely something about working en plein air,” he [Brett Mason] said. “You get a lot of the sights, the sounds, the smells. You’re really kind of involved in the picture.” >>

Allyson Ruggieri, Alexander Popichak, et al. The Three Rivers Arts Festival Brings Color And Whimsy To Pittsburgh. Jun 6, 2017

http://wesa.fm/post/three-rivers-arts-festival-brings-color-and-whimsy-pittsburgh#stream/0

FonT

<< You’re really kind of involved in the picture >> immagine questa che potrebbe ricordare una sorta di immediato Satori; forse e' per questi transitori, ispirati "stati della mente" che certe acicliche  "visioni d'artista" (all'interno del qualsivoglia gomitolo quasistocastico) sono talvolta in-credibilmente "predittive", dirompenti, micidiali perfino ...

https://en.m.wikipedia.org/wiki/Satori

giovedì 8 giugno 2017

# p-usa: a placebo effect (2): a rosy picture of POTUS Donald’s 2020 re-election prospects.

<< The White House was bracing for another chaotic week in Washington, awaiting potentially explosive public testimony from the ex-FBI director Donald Trump fired last month.  But nearly 400 miles away, his daughter-in-law  was home in North Carolina, painting a rosy picture of the president’s re-election prospects >>

<< No matter that in Washington, many Republicans are so deeply anxious about whether Donald Trump will damage the 2018 congressional election climate that they can't fathom talking about 2020. With the DC-based Trump family embroiled in crisis after crisis, Lara Trump has taken to the road and to the airwaves,
... >>

Katie Glueck. The face of Donald Trump’s 2020 campaign. Jun 07, 2017

http://www.kentucky.com/news/politics-government/article154701989.html

FonT

the placebo effect (1):

# p-usa: POTUS race: immediatly, they introduced a placebo within: the "Melania Effect" ... Nov.4, 2016

http://flashontrack.blogspot.it/2016/11/p-usa-potus-race-immediatly-they.html

mercoledì 7 giugno 2017

# s-game: on inspired, then systematic and bounded, generation of "errors" ...

<< When a musician improvises, “the prefrontal cortex is engaged, and one of its functions is conscious self-monitoring, censoring your output (..) That area of the brain is shutting down >>

<< Improvising well means a musician has to shut up the part of the brain that would typically be worried about “wrong” notes, enabling him or her to more easily let go >> Charles Limb

Kristen Page-Kirby. Jazz improvisation (and other types, too) will change your brain. June 1, 2017

https://www.washingtonpost.com/express/wp/2017/06/01/how-messing-around-clears-your-head/

Sound Health: Music and the Mind — The Future of Music and the Mind.  June 3, 2017.

http://www.kennedy-center.org/calendar/event/NRMHG

also

2117 - la destra e la sinistra di Hines. Feb. 02, 2007

http://inkpi.blogspot.it/2007/02/2117-la-destra-e-la-sinistra-di-hines.html

2124 - attrattore cooperativo bipolare (nell' elastici spigoli). Mar.  05, 2007

http://inkpi.blogspot.it/2007/03/2124-attrattore-cooperativo-bipolare.html

"polillo" in:

http://inkpi.blogspot.it

martedì 6 giugno 2017

# s-cell: turning stem cells into whatever you want (!)

<< an international team of researchers has a two-part system that can convert the cells to the targets and then remove the remnants of that conversion, leaving only the desired DNA behind to duplicate >>

AA << are using a Tet-On 3G inducible PiggyBac system that is a plasmid they named XLone to achieve insertion, activation and removal >>

A'ndrea Elyse Messer. Two-part system turns stem cells into whatever you want. June 5, 2017

http://news.psu.edu/story/470575/2017/06/05/research/two-part-system-turns-stem-cells-whatever-you-want

Lauren N. Randolph, Xiaoping Bao, et al. An all-in-one, Tet-On 3G inducible PiggyBac system for human pluripotent stem cells and derivatives. Scientific Reports 7, Article number: 1549 (2017) doi: 10.1038/s41598-017-01684-6

https://www.nature.com/articles/s41598-017-01684-6

lunedì 5 giugno 2017

# s-chem: solar fuels, a catalytic "dance" to drive

AA << have identified a rapid electronic process that could aid the water-splitting reaction in cobalt-containing catalysts. Cobalt catalysts are relatively inexpensive and could replace more expensive precious metal catalysts in the production of clean energy, most notably solar fuels >>

Chemical "dance" of cobalt catalysis could  pave way to solar fuels. June  3,  2017

https://m.phys.org/news/2017-06-chemical-cobalt-catalysis-pave-solar.html

Casey N. Brodsky, Ryan  G. Hadt, et al. In situ characterization of cofacial Co(IV) centers in CoO cubane: modeling the high-valent active site in oxygen-evolving catalysts.  PNAS (2017) vol. 114 no. 15  pp. 3855–3860 doi: 10.1073/pnas.1701816114

http://m.pnas.org/content/114/15/3855