chaos   1155

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Organizational theory. Cross discipline theory.
OD  organizational  dynamics  nonlinear  complexity  chaos 
19 hours ago by keeneyhome
"Learning from Lagos", Matthew Gandy [.pdf]
"To treat the city as a living art installation, or compare it to the neutral space of a research laboratory, is both to de-historicize & to depoliticize its experience. The informal economy of poverty celebrated by the Harvard team is the result of a specific set of policies pursued by Nigeria’s military dictatorships over the last decades under IMF & World Bank guidance, which decimated the metropolitan economy."

"Lagos provides ample evidence for Mike Davis’s contention that rapid urban growth in the context of structural adjustment, currency devaluation & state retrenchment has been a ‘recipe for the mass production of slums’."

"The scale of the city, its extreme poverty & ethnic polarization now present real obstacles to rebuilding its social & physical fabric. Though informal networks & settlements may meet immediate needs for some, & determined forms of community organizing may produce measurable improvements, grassroots responses alone cannot coordinate the structural…"
society  grassroots  informalnetworks  mikedavis  history  imperialism  politics  policy  economics  postcolumbian  colonialism  projectonthecity  transportation  infrastructure  urbanplanning  planning  growth  mutations  westafrica  africa  chaos  nigeria  urbanism  urban  cities  design  remkoolhaas  architecture  lagos  via:javierarbona  from delicious
10 days ago by robertogreco
Black-Scholes: The maths formula linked to the financial crash
It's not every day that someone writes down an equation that ends up changing the world. But it does happen sometimes, and the world doesn't always change for the better. It has been argued that one formula known as Black-Scholes, along with its descendants, helped to blow up the financial world.
20120427  mathematics  finance  crisis  prediction  chaos  market  economy  from delicious
27 days ago by Vacilando
[1204.1360] Particle filtering in high-dimensional chaotic systems
"We present an efficient particle filtering algorithm for multiscale systems, that is adapted for simple atmospheric dynamics models which are inherently chaotic. Particle filters represent the posterior conditional distribution of the state variables by a collection of particles, which evolves and adapts recursively as new information becomes available. The difference between the estimated state and the true state of the system constitutes the error in specifying or forecasting the state, which is amplified in chaotic systems that have a number of positive Lyapunov exponents. The purpose of the present paper is to show that the homogenization method developed in Imkeller et al. (2011), which is applicable to high dimensional multi-scale filtering problems, along with important sampling and control methods can be used as a basic and flexible tool for the construction of the proposal density inherent in particle filtering. Finally, we apply the general homogenized particle filtering algorithm developed here to the Lorenz'96 atmospheric model that mimics mid-latitude atmospheric dynamics with microscopic convective processes."
to:NB  particle_filters  chaos  dynamical_systems  state-space_models  state_estimation  re:stacs 
5 weeks ago by cshalizi
Austerity, Social Unrest, And Europe's 'Lose-Lose' Proposition | ZeroHedge
The link between government spending cuts and social unrest is highly non-linear and extremely troublesome. We first noted the must-read quantification of the relationship between so-called CHAOS of social unrest and spending cuts back in early January and this brief lecture reiterates some of the frightening conclusions. Critically, small spending cuts impact social unrest in very marginal ways but once the cuts begin to rise to 2-3% of GDP then the probability of considerable and painful social unrest becomes much higher.
budget  taxes  properroleofgovernment  chaos  preparedness 
6 weeks ago by cboyack
The Joys of Blocking People | The Awl
"All the people who would be unhappy about you unfollowing them, who subscribe to services like Qwitter or Friend or Follow or whatever... well, just think how unhappy they'll be when they actually discover that you've blocked them. It's the best! It's still a fairly new behavior, that Twitter will let people know that you've blocked them if you try to follow them: it used to be obscured. That was part of the New Internet Nice. Twitter didn't want to make people feel bad. But there's no way around "feeling bad" when someone's saying "I find you distasteful, offensive, annoying or just plain uninteresting, and I don't want to indulge your silly babble!""

"Making people DEAD TO YOU is so important."

"Maybe that's most important: that the Internet now allows more and more for random, chaotic connections."

"But all this rubbing of shoulders doesn't mean that we have to be victims. A whole bunch of people have made arguments about why blocking people is mean or bad etiquette or whatever, but basically they should sack up and be adult."
chaos  internet  twitter 
8 weeks ago by tealtan

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