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november 08, 2006
Dagslänkar 2006-11-08
Cirka en veckas länkar...
Vetenskap & Allmänhet: Astrologi vetenskap enligt var fjärde svensk. Undersökningen Allmänhetens syn på Vetenskap 2006 (PDF).
En ny JASSS (Journal of Artifical Societies and Social Simulation) har kommit. Innehåller t.ex.
Sujai Kumar, Sugata Mitra: Self-Organizing Traffic at a Malfunctioning Intersection:
Traffic signals and traffic flow models have been studied extensively in the past and have provided valuable insights on the design of signalling systems, congestion control, and punitive policies. This paper takes a slightly different tack and describes what happens at an intersection where the traffic signals are malfunctioning and stuck in some configuration. By modelling individual vehicles as agents, we were able to replicate the surprisingly organized traffic flow that we observed at a real malfunctioning intersection in urban India. Counter-intuitively, the very lawlessness that normally causes jams was causing traffic to flow smoothly at this intersection. We situate this research in the context of other research on emergent complex phenomena in traffic, and suggest further lines of research that could benefit from the analysis and modelling of rule-breaking behaviour.
Det finns även en simulering i NetLogo (kräver Java).
The Geomblog: The Snowblowing (or leaf raking) problem
YouTube: Mad Scientist Competition in Helsinki (naturligtvis via Improbable Research)
Scientific American Mind: om Paul Ekman och microexpressions A Look Tells All A person's face will always reveal his true feelings--if, like Paul Ekman, you are quick enough to recognize microexpressions
New Scientist: Solved: the perfect way to cut a cake
The art of cake-cutting requires great care and skill to ensure no party is left feeling cheated or envious. Now, however, parents and party hosts can approach the task with a little more confidence – mathematicians claim to have found the perfect way to cut a cake and keep everyone happy.
Se även:
Steven Brams, Michael A. Jones, Christian Klamler: Better Wayts to Cut a Cake (PDF)
Steven Brams
Steven Brams Fair Division - From Cake-Cutting to Dispute Resolution (1996, ISBN: 0521556449 )
Perfekt kakdelning
John Allen Paulos i ABC News: Who's Counting: Which 'Experts' Make Better Political Predictions?
Veckans spel är Bubbles. För att citera mig själv så är det en 8 på Tetris-skalan. Via Spinster and Spin(n)ster.
Den skönlitterära bok som just nu läses är Michael Crichton State of Fear (2004, ISBN: 0061015733) som här förmedlar sin version av miljöförstöring och eko-terrorism. Liksom hans Prey är det en blandning av fakta och fiction som jag som PopSci-junkie har väldigt svårt att stå emot (även om det ibland kan vara svårt att veta vad som är fakta och vad som är fiktion). Litteraturreferenslistan är stor även denna gång.
RealClimate diskuterar boken här.
NOM var inte speciellt road.
Posted by hakank at november 8, 2006 06:52 EM Posted to Diverse vetenskap