Discover Top Posts Tagged with #self-organized

Hundreds of tiny robots have been made to work as a team, inspired by the biological principles of self-organization.

The Just Enough Education - Elijah Sharpe at TEDxYouth@UH

#Vimeo #tedxevents #tedconferenceprovides #enougheducation #self-organized #elijahsharpe

Podcast in the self-organized radio 105fm in 8pm greek time (UTC+2) 16th june. The theme of the podcast it would be :REFUGEES AND ACTIVISTS FROM No Borders and 105fm talk about fortress Europe, the Greek State and fascism. You can hear us at 105fm.espivblogs.net

#podcast #105fm #self-organized #radio #refugees #activist #fortress europe #no borders show #no borders #solidarity #lesvos #greece #mitilini #λέσβος #αυτοοργανωμενο #ραδιόφωνο #αντιπληροφόριση #antireport

Is corporate communication in self-organized companies still needed? - Liip Blog

#corporate #communication #self-organized #companies #empresas #auto-organizadas

Global Indigenous?

The last time I was in Scotland, I happened upon a critical round table in honour of Bergen-based Anne Szefer Karlsen, one of the co-editors for the then newly released book, Self-Organized (2013, Open Editions). Throughout an afternoon of largely thoughtful articulations, I really only remember the crudest point made by a local photographer who brought up his disdain for immigrants who couldn’t “self-organize” themselves enough to get a job. It was not a comprehensible statement, even for a xenophobe, and Anne along with a few local Scots tried to reason as so in the most polite of manners. Many remained silent. All I could say was, “No.”

Later that evening at a club, the front man of the headlining band, who I was told was an increasingly popular Glaswegian act, came out in a full head dress, shirtless, and uttered vile and disgusting things for 45 minutes.

My general experience in traveling through Europe with the exception of London has often been saturated in an intense discomfort of blatant and surface hostility. If I happen on someone open-minded enough to talk about privilege and intersectional thinking and being, it is less a discussion than an explanation, and it always feels futile anyways.

When I want to have a critical discussion about race and power, class and power, I do not want the conversation rotating on a Eurocentric axis. And yet, after this week’s recent panel, here we are again.

That panel was hard going. Not exactly for the reasons why you would assume an “urgent” panel on Indigenous sovereignty in Canada was tough and difficult, unless you already knew. I should have known. While I’m sure excellent points were made, specifically by Wanda Nanibush about resource extraction across a global empire of capitalism as a unifying force, I can only remember Afterall Journal co-founder Charles Esche’s comparison of the need for himself and fellow European invaders to face decolonization just like how they faced denazificiation after WWII. While the other Charles corrected him, that statement still escaped, lingering, and leaving a bad taste still.

The only person who brought up art was Gerald McMaster, who spoke fondly of Carl Beam, an artist from the renamed territory of M’Chigeeng First Nation. I don’t remember why he brought Beam up, but I do remember Beam’s work was the first time I saw work that was explicitly about Indigenous self-representation. Jane Ash Poitras also comes to mind, but I haven’t heard her name in a long time. Same with Alex Janvier. There was a panel organized in 2012 about Indigenous Aesthetics that coincided with a solo exhibition by Janvier. I wrote something about it then for FUSE Magazine, and re-reading it over this morning, I still believe there lies a dangerous problem in galvanizing institutionally-charged language and thought, and who these positions actually empower. Returning to the question mark of the panel, who is asking about a Global Indigenous and what is motivating the production of answers to this question?

#Self-organized #Carl Beam #Jane Ash Poitras #Alex Janvier

Self-Organized Electromagnetic Field Structures in laser-Produced Counter-Streaming Plasmas

Nowadays, the internet is decentralised and unorganised. Users interact dynamically almost randomly by clicking, sharing and creating webpages. However, it is not hard for one to imagine a global structure emerging from this disorderliness: E.g. people are organised in a spider-web-liked structure on Facebook.

The internet is an example of self-organisation in which macroscopic structures are formed out of chaos. This phenomenon might be counterintuitive as random systems should naturally become more and more randomised. After all, a messy room can only get messier over time unless some mechanisms intervene, such as a person cleaning up the room.

While the self-organisation mechanism is well-studied in many regimes of physics such as crystallisation and fluid dynamics, those in the area of astrophysics are generally not. For example, supernova remnants, solar wind shocks and astrophysical bodies like the Herbig-Haro object are results of global structures (e.g. collision-less shockwave) emerging from turbulent plasma that are not well understood.

Although these phenomena have long been studied using satellites, their mechanism and even the necessary pre-conditions are still unknown. Researches have now tried to recreate stable and macroscopic structures in plasma in laboratories, hoping that greater parameter control could generate more insightful models. For the first time, physicists could make accurate measurements of plasma self-organisation processes that take place deep in the cosmos.

2 Counter-streaming plasma were created by focusing high energy beams on target disks. The intensity of the beams was a quadrillion time more than that of the sun on earth’s surface. The counter-stream meant high relative velocity, which rendered inter-beam ion exchange rare and facilitated the formation of collisionless shock — an important macro-feature of interest. The interactions were recorded using proton imaging.

After two nanoseconds — the time needed for light to travel 60 cm — turbulent fields developed. Shortly afterward, sharp caustics structures started to form. Caustic structures were similar to the pattern of light formed when sunlight shines through rippled water. Then, the structure arranged itself into two horizontal regions, leaving an empty centre.

Remarkably, these structures spanned distances much longer than any other plasma feature. They were also so stable that they persisted during the entire experiment window. Given these time and length, these features were definitely “global” structures that emerge from the chaotic plasma beam.

A paper published a year later hypothesised a few explanations. Some models relied on electrostatic phenomenon while others explained using the formation of toroidal (doughnut-shaped) magnetic fields. The latter successfully accounted for the general features but relied on too many assumptions.

Further investigations are currently underway with improved data collection and tomographic techniques. Indeed, merely analysing proton imaging data is inconclusive. Methods that examine density gradients and magnetic field patterns have to be deployed. Future experiments can also be conducted at the National Ignition Facility, which allows researchers to produce these plasma structures at a much larger scale.

Ultimately, models of plasma self-organisation developed in the laboratory can help astrophysicists to understand the emergence of cosmic structures better. In the long term, the implications go beyond astronomy and facilitate a better understanding of self-organisation processes from microscopic to cosmological scales.