Discover and read the best of Twitter Threads about #Nonlinear

Most recents (5)

On #InternationalWomensDay we'd like to pause and celebrate just a small slice of the enormous contributions to science women have made here at SFI.

Read the thread below for links to some of their own favorite research papers, and a few nominated by other SFI faculty members:
First off, these papers on #FoodWebs led by our VP for #Science, Jennifer Dunne:

[@royalsociety Proceedings B]
royalsocietypublishing.org/doi/10.1098/rs…

[@PLOSBiology]
doi.org/10.1371/journa…

...and this interview she did for @QuantaMagazine:
quantamagazine.org/with-food-webs…

#Ecology #Ecologist
Next, two papers on how humans navigate and process #information co-authored by SFI External Prof @DaniSBassett (@Penn):

[@NatureHumBehav]
nature.com/articles/s4156…
+ summary:
blog.seas.upenn.edu/studying-hunte…

[@nature]
nature.com/articles/s4156…
+ summary:
penntoday.upenn.edu/news/what-do-b…
Read 21 tweets
Lets talk about #Oil and #Inflation and whether the relationship is #Linear or #NonLinear...
We have all been witness to the recent volatility in the #Global #Oil markets. We have seen how disruptions in oil #Supply, be it from #SaudiArabia, #Nigeria, #Venezuela, #Iran or #Libya can cause upticks in the global #Price of oil...
On the same token, we are aware how muted #oil #demand can arise from a slow down in #global #growth. For e.g. a persistent slowdown in #China often translates into a softening of global oil prices. Similarly, high #inventories & the impact of #US #shale drives down prices...
Read 9 tweets
"You don't see radio changing gradually and suddenly become radar. #Darwin's theory doesn't work for #technology, and we have to make a new observation."

- W Brian Arthur at SFI today

#evolution #innovation #invention
"Novel technologies are constructed from existing technologies. These offer themselves as components for the construction of further technologies."

- W Brian Arthur at SFI today

#evolution #innovation #invention #technology #engineering #design
Unlike the two-parent #inheritance typical to (but not ubiquitous among) #complex organisms, #technology inherits features from n parents - a "vast ancestral #network" more like horizontal gene transfer networks in #bacteria.

W Brian Arthur on sumulating #invention on a chip:
Read 18 tweets
Hello #dendrites friends! Check out our new paper, published at @NatureComms : "Challenging the point neuron dogma: FS basket cells as 2-stage neural networks. nature.com/articles/s4146…
Briefly, we predicted through #computational simulations that the #dendrites of #Fast_spiking #interneurons in #Hippocampal #CA3 and #PFC areas come in two #nonlinear flavors: Supralinear and sublinear!
This bimodal nonlinear behavior is determined by differences in the morphology (volume) of the dendritc branches. These differences can causally enable or prohibit the existence of #sodium_spikes. Interestingly, both types coexist in all model neurons tested!
Read 8 tweets
"If I were to write a textbook on #complexity, it would be structured like this..."
- SFI Pres David Krakauer starts off this morning at #CSSS19 #CSSS at @IAIASantaFe

#error #adaptation #universality #coarsegrained #math #theory
"If you talk about #intelligence and #stupidity, you talk about #communication and #policy. That is the natural place to start."

"If you've ever written a Lokta-Volterra #equation, you've drawn a perpetual motion machine. There's no #dissipation."

- SFI President David Krakauer
"Why #God is a bad #theory: it's not because it's not true; it's because it uses an infinite-dimensional process to explain low-dimensional phenomena."

- SFI President David Krakauer at #CSSS19 on #Ockham's Razor & why #Darwin's animal breeding metaphor backfired on #evolution
Read 7 tweets

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