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martedì 16 gennaio 2018

# acad: new research must be better reported

<< Yet all too often research-led stories start with "researchers have found", with little mention of their names, institution and who funded their work. And the problem is that by reporting new research in this way, it fails to break down the stereotypical image of an ivory tower >>

Andy Tattersall. New research must be better reported, the future of society depends on it. Jan 8, 2018.

https://theconversation.com/new-research-must-be-better-reported-the-future-of-society-depends-on-it-87407

lunedì 15 gennaio 2018

# sec: sometimes the repair is crippling ...

<< Microsoft has temporarily stopped fixing a serious security flaw on personal computers powered by certain chips from Advanced Micro Devices because the repair is crippling the affected machines >>

Microsoft stops fixing security flaw on PCs with AMD chips. Jan 9, 2018.

https://m.phys.org/news/2018-01-microsoft-flaw-pcs-amd-chips.html

Windows operating system security update block for some AMD based devices. Jan 10, 2018.

https://support.microsoft.com/en-us/help/4073707/windows-os-security-update-block-for-some-amd-based-devices

sabato 13 gennaio 2018

# brain: rhythm-regulation and plasticity through oscillations

<< During inattentive wakefulness and non-rapid eye movement (NREM) sleep, the neocortex and thalamus cooperatively engage in rhythmic activities >>

<< thalamic oscillations of low-vigilance states have a plasticity function that (..) can shape ongoing oscillations during inattention and NREM sleep and may potentially reconfigure thalamic networks for faithful information processing during attentive wakefulness >>

Vincenzo Crunelli, Magor L. Lorincz, et al. Dual function of thalamic low-vigilance state oscillations: rhythm-regulation and plasticity. Nature Reviews Neurosci doi: 10.1038/nrn.2017.151. Jan 11, 2018

https://www.nature.com/articles/nrn.2017.151

venerdì 12 gennaio 2018

# chem: oddities under pressure

<< When [AA] placed the material inside a gas chamber and cranked up the air pressure from one bar (about the atmospheric pressure at sea level) to five bars, the cube’s volume increased by about 3 percent >>

Maria Temming. This material does weird things under pressure. Microcube is designed so that pressure makes it expand instead of compress. Science News. 2017; 192 (11): 12. Dec 23, 2017.

https://www.sciencenews.org/article/material-does-weird-things-under-pressure 

Jingyuan Qu, Alexander Gerber, et al. Experiments on Metamaterials with Negative Effective Static Compressibility. Phys. Rev. 2017; X7, 041060. Dec 8, 2017

https://journals.aps.org/prx/abstract/10.1103/PhysRevX.7.041060

martedì 9 gennaio 2018

# behav: some birds discovered fire before humans did

<< There are many anecdotes about Australian birds of prey using fire, according to ornithologist Bob Gosford at the Central Land Council in Alice Springs, Northern Territory >>

<< The three species mentioned are black kites (Milvus migrans), whistling kites (Haliastur sphenurus) and brown falcons (Falco berigora) >>

Andy Coghlan. Arsonist falcons suggest birds discovered fire before humans did. Jan 5, 2018.

https://www.newscientist.com/article/2157887-arsonist-falcons-suggest-birds-discovered-fire-before-humans-did

lunedì 8 gennaio 2018

gst: some origami won't fold under pressure

<< Why is it difficult to refold a previously folded sheet of paper? [AA] show that even crease patterns with only one designed folding motion inevitably contain an exponential number of "distractor" folding branches accessible from a bifurcation at the flat state >>

Menachem Stern, Matthew B. Pinson, Arvind Murugan. The Complexity of Folding Self-Folding Origami. Phys. Rev. X 7, 041070 – Dec 22, 2017.

https://journals.aps.org/prx/abstract/10.1103/PhysRevX.7.041070

Louise Lerner. Scientists lay out why some origami won't fold under pressure. Jan4, 2018.

https://m.phys.org/news/2018-01-scientists-origami-wont-pressure.html

mercoledì 3 gennaio 2018

# behav: to avoid a rat race

<< Mice can learn to overcome their naturally aggressive approach to conflict resolution, instead adopting a cooperative strategy >>

AA << demonstrate that pairs of mice can learn to coordinate their behaviour to achieve an egalitarian distribution of rewards — but only when rewards are delivered directly to the brain, rather than through food >>

Scott M. Rennie, Michael. L. Platt. Mice learn to avoid the rat race. Nature News and Views. Dec 21, 2017.

https://www.nature.com/articles/d41586-017-08835-9  

Choe Il-Hwan, Byun Junweon, et al. Mice in social conflict show rule-observance behavior enhancing long-term benefit. Nature Comm. 2017;  8 (1176).  doi: 10.1038/s41467-017-01091-5.  Nov 07, 2017

https://www.nature.com/articles/s41467-017-01091-5