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sabato 23 gennaio 2016

# s-gst: periodic stripes: spacing and orientation

<< Patterning of periodic stripes during development requires mechanisms to control both stripe spacing and orientation. A number of models can explain how stripe spacing is controlled, including molecular mechanisms, such as Turing’s reaction-diffusion model, as well as cell-based and mechanical mechanisms >>

The Hiscock and Megason's  master model << predicts three main perturbations that can affect how stripes orient: one is a change in "production gradient," which would be a substance that amplifies stripe pattern density; second is a change in "parameter gradient," a substance that changes one of the parameters involved in forming the stripe; and the last is a physical change in the direction of the molecular, cellular, or mechanical origin of the stripe >>

http://www.eurekalert.org/pub_releases/2015-12/cp-amm121815.php

Tom W. Hiscock, Sean G. Megason. Orientation of Turing-like Patterns by Morphogen Gradients and Tissue Anisotropies. Cell Systems, 2015; 1 (6): 408 DOI: 10.1016/j.cels.2015.12.001

http://www.sciencedirect.com/science/article/pii/S240547121500215X

# s-ecol: zebra (and okapi?) fashion

<< The most longstanding hypothesis for zebra striping is crypsis, or camouflaging, but until now the question has always been framed through human eyes >>

http://www.sciencedaily.com/releases/2016/01/160122170837.htm

Melin AD, Kline DW, et al. Zebra Stripes through the Eyes of Their Predators, Zebras, and Humans. PLoS ONE 11(1): e0145679. doi:10.1371/journal.pone.0145679

http://dx.doi.org/10.1371/journal.pone.0145679

# s-epidem: diurnal mosquitoes with Zika virus inside

<< Experts are concerned that the illness, which is increasingly linked to a disorder that causes paralysis, may become a problem in the U.S. >>

Dina Fine Maron. Zika Disease: Another Reason to Hate Mosquitoes.  October 8, 2015

http://www.scientificamerican.com/article/zika-disease-another-reason-to-hate-mosquitoes/

A new global map highlights places #Zika could spread

https://twitter.com/ScienceNews/status/690677908927598593

Meghan Rosen. Rapid spread of Zika virus in the Americas raises alarm. Mosquito-borne disease linked to birth defect is pushing northward from Brazil. 3:08PM, January 22, 2016

https://www.sciencenews.org/article/rapid-spread-zika-virus-americas-raises-alarm

venerdì 22 gennaio 2016

# n-trade: the gross national product does not allow for

<< Yet the gross national product does not allow for the health of our children, the quality of their education or the joy of their play.  It does not include the beauty of our poetry or the strength of our marriages, the intelligence of our public debate or the integrity of our public officialsIt measures neither our wit nor our courage, neither our wisdom nor our learning, neither our compassion nor our devotion to our country, it measures everything in short, except that which makes life worthwhileAnd it can tell us everything about America except why we are proud that we are Americans. >>

Robert F. Kennedy. Kansas University,  March 18, 1968

http://www.jfklibrary.org/Research/Research-Aids/Ready-Reference/RFK-Speeches/Remarks-of-Robert-F-Kennedy-at-the-University-of-Kansas-March-18-1968.aspx

# n-trade: how basic income can solve ...

<< We are being afflicted with a new disease of which some readers may not yet have heard the name, but of which they will hear a great deal in the years to come – namely, technological unemployment >>

Andrew White. How basic income can solve one of the digital economy’s biggest problems. January 22, 2016 10.55am GMT

https://theconversation.com/how-basic-income-can-solve-one-of-the-digital-economys-biggest-problems-53081

# e-sec: Sun Tzu style: unpredictable (chaotic) environment to defending cpu from cyber-attacks

<< We want our computers to perform the way we expect. But what if the key to defeating malware is introducing a bit of chaos? >>

<< Programs you know and trust could be approved to run in a standard environment where they'll function normally, while detected malware are sequestered in a third environment, called deceptive. Instead of squashing them immediately, Chameleon would let the malicious processes continue to work in a façade environment while collecting information that can be used to understand and defeat them >>

<< Predictable computer systems make life too easy for attackers >>

Alisson Clark, January 21, 2016

http://m.phys.org/news/2016-01-defending-cyber-attacks-sun-tzu-style.html

https://twitter.com/physorg_com/status/690237559511846913

l'approccio "Sun Tzu  style" benche' antico sembrerebbe funzionale anche nell'ambito della sicurezza informatica ... quando le grandi idee ciclicamente riemergono dirompenti ...

giovedì 21 gennaio 2016

# rmx-s-esobio: smarter ways to find them (!)

<< smarter ways to find them >>

https://twitter.com/newscientist/status/690006110120574976

<< The latest round starts this month, courtesy of a 10-year, $100 million project called Breakthrough Listen. Funded by tech entrepreneur Yuri Milner, it will set two of the world’s largest radio telescopes surveying the million closest stars across a broader swathe of the radio spectrum, and will cover 10 times as much sky as all previous searches combined >>

https://www.newscientist.com/article/mg22930560-800-how-to-find-et-7-ways-aliens-might-give-themselves-away/

<< $100 million project called Breakthrough Listen >>

https://www.newscientist.com/article/dn27923-100m-project-uses-worlds-best-radio-telescopes-to-find-aliens/