Zobrazeno 1 - 10
of 81
pro vyhledávání: '"Kromer, Justus A."'
We theoretically address minimal search strategies of active, self-propelled particles towards hidden targets in three-dimensional space. The particles can sense if a target is close, e.g., by detecting signaling molecules released by a target, but t
Externí odkaz:
http://arxiv.org/abs/2103.10913
Publikováno v:
Phys. Rev. Lett. 124, 118101 (2020)
We present a theory of chemokinetic search agents that regulate directional fluctuations according to distance from a target. A dynamic scattering effect reduces the probability to penetrate regions with high fluctuations and thus search success for
Externí odkaz:
http://arxiv.org/abs/1904.11020
Publikováno v:
Phys. Rev. E 98, 052303 (2018)
We study the collective dynamics of strongly diffusively coupled excitable elements on small random tree networks. Stochastic external inputs are applied to the leaves causing large spiking events. Those events propagate along the tree branches and,
Externí odkaz:
http://arxiv.org/abs/1808.02750
For navigation, microscopic agents such as biological cells rely on noisy sensory input. In cells performing chemotaxis, such noise arises from the stochastic binding of signaling molecules at low concentrations. Using chemotaxis of sperm cells as ap
Externí odkaz:
http://arxiv.org/abs/1711.04858
Publikováno v:
Scientific Reports 7, 3956 (2017)
We study the stochastic dynamics of strongly-coupled excitable elements on a tree network. The peripheral nodes receive independent random inputs which may induce large spiking events propagating through the branches of the tree and leading to global
Externí odkaz:
http://arxiv.org/abs/1701.01693
Publikováno v:
Phys. Rev. E 93, 042406 (2016)
We study the emergence and coherence of stochastic oscillations in star networks of excitable elements in which peripheral nodes receive independent random inputs. A biophysical model of a distal branch of sensory neuron in which peripheral nodes of
Externí odkaz:
http://arxiv.org/abs/1512.01536
Publikováno v:
Eur. Phys. Lett. 108, 20007 (2014)
We study the interplay between noise and a positive feedback mechanism in an excitable system that generates events. We show that such a system can exhibit a bistability in the dynamics of the event generation (states of low and high activity). The s
Externí odkaz:
http://arxiv.org/abs/1410.1705
Publikováno v:
Phys. Rev. E, 89 (2014) 032138
Using a stochastic nonlinear phase oscillator model, we study the effect of event-triggered feedback on the statistics of interevent intervals. Events are associated with the entering of a new cycle. The feedback is modeled by an instantaneous increa
Externí odkaz:
http://arxiv.org/abs/1401.8112
We provide an algorithm based on weighted-ensemble (WE) methods, to accurately sample systems at steady state. Applying our method to different one- and two-dimensional models, we succeed to calculate steady state probabilities of order $10^{-300}$ a
Externí odkaz:
http://arxiv.org/abs/1303.3973
Autor:
Kromer, Justus A.1 (AUTHOR) jkromer@stanford.edu, Tass, Peter A.1 (AUTHOR)
Publikováno v:
PLoS Computational Biology. 11/3/2022, Vol. 18 Issue 11, p1-38. 38p. 12 Diagrams, 2 Graphs.
