![]() An extension of Zermelo’s model for ranking by paired comparisons. Preprint at (2013).ĬPLEX Optimization Incorporated, Using the CPLEX Callable Library (Incline Village, 1994).Ĭonner, G. Tracking in three dimensions via recursive multi-path branching. Multiple View Geometry in Computer Vision (Cambridge Univ. Hydrodynamics fluctuations and instabilities in ordered suspensions of self-propelled particles. Deciphering interactions in moving animal groups. Some causes of the variable shape of flocks of birds. Transitions in a self-propelled-particles model with coupling of accelerations. Equilibria and steering laws for planar formations. Scale-free correlations in starling flocks. Field theories with superconductor solutions. Quasiparticles and gauge invariance in the theory of superconductivity. ![]() Empirical investigation of starling flocks: A benchmark study in collective animal behaviour. Relevance of metric-free interactions in flocking phenomena. Interaction ruling animal collective behavior depends on topological rather than metric distance: Evidence from a field study. Statistical mechanics for natural flocks of birds. Collective memory and spatial sorting in animal groups. Novel type of phase transition in a system of self-driven particles. Vicsek, T., Czirók, A., Ben-Jacob, E., Cohen, I. The simulation of the movement of fish schools. Flocks, herds, and schools: A quantitative theory of flocking. Schooling and Ecology of Fish (John Wiley, 1973). The STARFLAG handbook on collective animal behaviour: 1. Structure of turning in airborne Rock Dove ( Columba livia) flocks. ![]() Hierarchical group dynamics in pigeon flocks. Information transfer in moving animal groups. Self-organization and collective behavior in vertebrates. (eds) Animal Groups in Three Dimensions (Cambridge Univ. Group decisions in humans and animals: A survey. Our results suggest that swift decision-making may be the adaptive drive for the strong behavioural polarization observed in many living groups.Ĭonradt, L. The theory not only explains the data, but also predicts that information transfer must be faster the stronger the group’s orientational order, a prediction accurately verified by the data. Essential to this framework is the inclusion of the birds’ behavioural inertia. Building on spontaneous symmetry breaking and conservation-law arguments, we formulate a theory that correctly reproduces linear and undamped propagation. These results contrast starkly with present models of collective motion, which predict diffusive transport of information. We find that information about direction changes propagates across the flock with a linear dispersion law and negligible attenuation, hence minimizing group decoherence. Here we present an experimental study of starling flocks performing collective turns. The mechanism by which natural groups achieve such robustness, however, is not clear. During this transition fast and robust transfer of information is essential to prevent cohesion loss. Collective decision-making in biological systems requires all individuals in the group to go through a behavioural change of state.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |