منابع مشابه
Dynamics of bacterial swarming.
When vegetative bacteria that can swim are grown in a rich medium on an agar surface, they become multinucleate, elongate, synthesize large numbers of flagella, produce wetting agents, and move across the surface in coordinated packs: they swarm. We examined the motion of swarming Escherichia coli, comparing the motion of individual cells to their motion during swimming. Swarming cells' speeds ...
متن کاملTurbulence of swarming sperm.
Collective motion of self-sustained swarming flows has recently provided examples of small-scale turbulence arising where viscous effects are dominant. We report the first observation of universal enstrophy cascade in concentrated swarming sperm consistent with a body of evidence built from various independent measurements. We found a well-defined k^{-3} power-law decay of a velocity field powe...
متن کاملProbabilistic Modeling of Swarming Systems
Robotic swarms can offer robust, scalable and adaptive solutions to tasks like inspection, coverage or foraging from the macro to the microscale, e.g, from analyzing rock-samples on planetary surfaces to attacking tumors inside the human body, among others. One of the key challenges in designing robotic swarms is to understand the relationship between not only an individual’s actions, but also ...
متن کاملCA Models of Myxobacteria Swarming
We develop two models for Myxobacteria swarming, a modified Lattice Gas Cellular Automata (LGCA) model and an off-lattice CA model. In the LGCA model each cell is represented by one node for the center of mass and an extended rod-shaped cell profile. Cells check the surrounding area and choose in which direction to move based on the local interactions. Using this model, we obtained a density vs...
متن کاملSwarming in bounded domains
The Vicsek model is a prototype for the emergence of collective motion. In free space, it is characterized by a swarm of particles all moving in the same direction. Since this dynamic does not include attraction among particles, the swarm, while aligning in velocity space, has no spatial coherence. Adding specular reflection at the boundaries generates global spatial coherence of the swarms whi...
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ژورنال
عنوان ژورنال: Science
سال: 1920
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.52.1350.468