Showing 1 - 10 of 122
In this paper, we consider a discrete choice model where heterogeneous agents are subject to mutual influences. We explore some consequences on the market's behaviour, in the simplest case of a uniform willingness to pay distribution. We exhibit a first-order phase transition in the profit...
Persistent link: https://www.econbiz.de/10010871719
interacting neural networks classifying vectors and learning from members of their social neighbourhood about their average …
Persistent link: https://www.econbiz.de/10011059881
One distinctive and pervasive aspect of social systems is the fact that they involve several kinds of agents. Thus, in order to draw parallels with physical systems one is led to consider binary (or multi-component) compounds. Recent views about the mixing of liquids in solutions gained from...
Persistent link: https://www.econbiz.de/10010590252
During experiments carried out several years ago to grow dendritic crystals while they are levitated in a tube containing rotating supersaturated solution, a curious banding process was observed, in which the crystals were seen to accumulate preferentially in periodic positions within the tube....
Persistent link: https://www.econbiz.de/10010871612
We examine the long-time behaviour of A + B(static) → 0 reaction-diffusion systems with initially separated species A and B. All of our analysis is carried out for arbitrary (positive) values of the diffusion constant DA of particles A and initial concentrations a0 and b0 of A's and B's. We...
Persistent link: https://www.econbiz.de/10011058926
produce density-dependent segregation of large objects, through a buoyancy force. A criterion for the onset of fluidization …
Persistent link: https://www.econbiz.de/10011059224
We present a hydrodynamic theoretical model for “Brazil nut” size segregation in granular materials. We give analytical … propose a new mechanism for this particle size-segregation due to buoyant forces caused by density variations which come from …
Persistent link: https://www.econbiz.de/10011060301
We present a numerical study of the flow segregation problem in bidimensional piles. To simulate the pile formation, we … and the size ratio between them. The different segregation patterns arising after the pile is finished are studied by … analyzing the spatial distribution of the grains. Two different segregation indices are defined and evaluated over the piles …
Persistent link: https://www.econbiz.de/10011062042
Assuming the aggregates of a single chiral component as a pure phase, chiral segregation can be considered as a … segregation can be considered as phase equilibrium. The standard mechanism to understand phase equilibrium considers the complete … effect that repulsions and attractions have on chiral segregation we study a two-dimensional model, bent hard needles model …
Persistent link: https://www.econbiz.de/10011062442
We study the statistical mechanical conditions under which segregation of racemic mixtures of chiral molecules is … pure and racemic systems. We find that for this simple model segregation is generally possible in the very high density …
Persistent link: https://www.econbiz.de/10011063236