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mercoledì 31 luglio 2019

# web: multitudes under hypothetical conditioning; trolls and bots in social media.

<< Trolls and bots have a huge and often unrecognized influence on social media. They are used to influence conversations for commercial or political reasons. They allow small hidden groups of people to promote information supporting their agenda and a large scale. They can push their content to the top of people’s news feeds, search results, and shopping carts. Some say they can even influence presidential elections. >>

<< Trolls are dangerous online because it’s not always obvious when you are being influenced by them or engaging with them. >>

<< Bots are computer programs posing as people. They can amplify the effect of trolls by engaging or liking their content en masse, or by posting their own content in an automated fashion. They will get more sophisticated and harder to detect in the future. Bots can now create entire paragraphs of text in response to text posts or comments. >>

Jason Skowronski. Trolls and bots are disrupting social media - here’s how AI can stop them (Part 1). Jul 30, 2019.   https://towardsdatascience.com/trolls-and-bots-are-disrupting-social-media-heres-how-ai-can-stop-them-d9b969336a06   

Jason Skowronski. Identifying trolls and bots on Reddit with machine learning (Part 2). Jul 30, 2019.  https://towardsdatascience.com/identifying-trolls-and-bots-on-reddit-with-machine-learning-709da5970af1 

Also

Notes. 2151 - a voting machine (to explain precisely). Jan 15, 2008.   https://inkpi.blogspot.com/2008/01/2151-voting-machine-to-explain.html

martedì 30 luglio 2019

# chem: acoustic levitation techniques to perform chemistry in floating droplets

<<  Beauchamp (Jack Beauchamp) is doing work in what he calls "lab-in-a-drop" chemistry, in which chemical reactions are performed within a drop of liquid suspended in midair through acoustic levitation. >>

Performing chemistry in floating droplets. California Institute of Technology. Jul 29, 2019.

https://m.phys.org/news/2019-07-chemistry-droplets.html  

Chaonan Mu, Jie Wang, et al. Mass Spectrometric Study of Acoustically Levitated Droplets Illuminates Molecular‐Level Mechanism of Photodynamic Therapy for Cancer involving Lipid Oxidation. Angewandte Chemie International Edition. Volume 58, Issue 24. doi: 10.1002/anie.201902815. Apr 23, 2019.

https://onlinelibrary.wiley.com/doi/abs/10.1002/anie.201902815 

mercoledì 24 luglio 2019

# gst: the intermittent dance of liquid droplets

<< Liquid droplets bouncing on a vibrating liquid surface can execute a surprising cycle, alternating between moving and standing still. >>

Focus: Video—Stop and Go Droplets.
July 12, 2019• Physics 12, 80.    https://physics.aps.org/articles/v12/80    

Rahil N. Valani, Anja C. Slim, and Tapio Simula. Superwalking Droplets.
Phys. Rev. Lett. 123, 024503 – Published 12 July 2019.   https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.123.024503  

Also

"droplets". In FonT.   https://flashontrack.blogspot.com/search?q=droplets

martedì 23 luglio 2019

# gene: parental 'memory' could be inherited across generations (2); the happiness project.

<< In public talks and interviews, Mansuy (Isabelle Mansuy) says she's careful not to promise too much. As confident as she is in her mouse model, she says, there's lots more work to be done. "I don't think the field is moving too fast,"  Mansuy says. "I think it's moving too slow." >>

Andrew Curry. Parents’ emotional trauma may change their children’s biology. Studies in mice show how. Science. doi: 10.1126/science.aay7690. Jul. 18, 2019.    https://www.sciencemag.org/news/2019/07/parents-emotional-trauma-may-change-their-children-s-biology-studies-mice-show-how  

Andrew Curry. A painful legacy. Science. Vol. 365, Issue 6450, pp. 212-215. doi: 10.1126/science.365.6450.212. Jul 19, 2019.     https://science.sciencemag.org/content/365/6450/212

Jocelyn Kaiser. The Epigenetics Heretic. Science  Vol. 343, Issue 6169, pp. 361-363. doi: 10.1126/science.343.6169.361.  Jan 24, 2014.    https://science.sciencemag.org/content/343/6169/361   

David Grimm. The happiness project. Science. Vol. 359, Issue 6376, pp. 624-627. doi: 10.1126/science.359.6376.624. Feb 09, 2018.    https://science.sciencemag.org/content/359/6376/624  

Also

parental 'memory' could be inherited across generations. FonT. Jul 22, 2019.  http://flashontrack.blogspot.com/2019/07/gene-parental-could-be-inherited-across.html

'magic string'.  In: FonT.    https://flashontrack.blogspot.com/search?q=magic+string

lunedì 22 luglio 2019

# gene: parental 'memory' could be inherited across generations

AA << tested the possibility that environmentally triggered modifications could allow 'memory' of parental experiences to be inherited. In Drosophila melanogaster, exposure to predatory wasps leads to inheritance of a predisposition for ethanol-rich food for five generations.  Inhibition of Neuropeptide-F (NPF) activates germline caspases required for transgenerational ethanol preference. Further, inheritance of low NPF expression in specific regions of F1 brains is required for the transmission of this food preference >>

<< Given the conserved signaling functions of NPF and its mammalian NPY homolog in drug and alcohol disorders, these observations raise the intriguing possibility of NPY-related transgenerational effects in humans. >>

Julianna Bozler, Balint Z Kacsoh, Giovanni Bosco. Transgenerational inheritance of ethanol preference is caused by maternal NPF repression.
eLife doi: 10.7554/eLife.45391.001. Jul 9, 2019.

https://elifesciences.org/articles/45391

Study finds that parental 'memory' is inherited across generations. The Geisel School of Medicine at Dartmouth. Jul 9, 2019.

https://m.phys.org/news/2019-07-parental-memory-inherited.html   

Also

"Neuropeptide-F"

https://www.ncbi.nlm.nih.gov/mesh/?term=Neuropeptide-F

http://flybase.org/reports/FBgn0027109.html 

https://www.wikigenes.org/e/gene/e/42018.html

domenica 21 luglio 2019

# brain: to trace transitions from consciousness to unconscious subliminal perception

AA << study the transition in the functional networks that characterize the human brains’ conscious-state to an unconscious subliminal state of perception >>

<< the most inner core (i.e., the most connected kernel) of the conscious-state functional network corresponds to areas which remain functionally active when the brain transitions from the conscious-state to the subliminal-state. That is, the inner core of the conscious network coincides with the subliminal-state. >>

<< This finding imposes constraints to theoretical models of consciousness, in that the location of the core of the functional brain network is in the unconscious part of the brain rather than in the conscious state as previously thought. >>

Francesca Arese Lucini, Gino Del Ferraro, et al. How the Brain Transitions from Conscious to Subliminal Perception. Neuroscience. Volume 411, Jul 15, 2019, Pages 280-290.

https://www.sciencedirect.com/science/article/abs/pii/S0306452219302052

<< The k-core of the conscious state is reduced to three active regions of the brain, the fusiform gyrus (left and right) and the precentral gyrus. These regions are the only active in the subliminal state. >>

Physicists use mathematics to trace neuro transitions. City College of New York. Jul 18, 2019.

https://m.medicalxpress.com/news/2019-07-physicists-mathematics-neuro-transitions.html  

venerdì 19 luglio 2019

# life: simmetrico, purtuttavia caotico

<< La Bce starebbe mettendo in dubbio l'efficacia del target di inflazione stabilito per l'Eurozona. Un target che, così come è noto, è "inferiore, ma vicino alla soglia del 2%". Ora, per far sì che gli stimoli monetari rimangano operativi per un periodo di tempo più lungo, Mario Draghi & Co - stando a quanto riporta Bloomberg - starebbero valutando la possibilità di adottare un approccio più "simmetrico", ovvero stabilire un target di inflazione che sia "non solo inferiore, ma vicino alla soglia del 2%", come quello attuale, ma anche "superiore e vicino alla soglia del 2%". >>

Laura Naka Antonelli. Bce medita modifiche a target inflazione attuale 'al di sotto, ma vicino al 2%'. Jul 18, 2019

https://www.finanza.com/Finanza/Notizie_Mondo/Altri_paesi_Europa/notizia/Bce_medita_modifiche_a_target_inflazione_attuale__al_di_sott-508928