• Publications
  • Influence
Cooperative self-organization of microorganisms
This work presents a wealth of beautiful patterns formed during colony development of various microorganisms and for different environmental conditions and demonstrates how communication leads to self-organization via cooperative behaviour of the cells. Expand
Self-organization in systems of self-propelled particles.
A continuum version of the discrete model consisting of self-propelled particles that obey simple interaction rules is developed and it is demonstrated that the agreement between the discrete and the continuum model is excellent. Expand
Incoherent Feedforward Control Governs Adaptation of Activated Ras in a Eukaryotic Chemotaxis Pathway
The dynamical response to a uniform change in chemoattractant concentration of a eukaryotic chemotaxis pathway immediately downstream from G protein–coupled receptors is determined. Expand
The Astrocyte as a Gatekeeper of Synaptic Information Transfer
A simple biophysical model for the coupling between synaptic transmission and the local calcium concentration on an enveloping astrocytic domain is presented and suggests a novel, testable hypothesis for the spike timing statistics measured for rapidly firing cells in culture experiments. Expand
Phase-field model of mode III dynamic fracture.
A phenomenological continuum model for the mode III dynamic fracture that is based on the phase-field methodology used extensively to model interfacial pattern formation is introduced and two-dimensional simulations that yield steady-state crack motion in a strip geometry above the Griffith threshold are reported. Expand
Bacterial linguistic communication and social intelligence.
It is proposed that bacteria use their intracellular flexibility, involving signal transduction networks and genomic plasticity, to collectively maintain linguistic communication: self and shared interpretations of chemical cues, exchange of chemical messages (semantic) and dialogues (pragmatic). Expand
Directional sensing in eukaryotic chemotaxis: a balanced inactivation model.
This work proposes a directional sensing mechanism in which two second messengers are produced at equal rates and proposes that the dynamics of a heterotrimeric G protein might allow for a specific biochemical realization of this model. Expand
Dynamic instabilities of fracture under biaxial strain using a phase field model.
This model is able to accurately reproduce the different behavior of cracks and reproduces well observed supercritical Hopf bifurcation and is therefore the first simulation which does so. Expand
Membrane-bound Turing patterns.
  • H. Levine, W. Rappel
  • Mathematics, Medicine
  • Physical review. E, Statistical, nonlinear, and…
  • 19 December 2005
This work studies Turing patterns in bounded regions where the nonlinear chemical reactions occur on the boundary and where reagent transport occurs in the bulk to find that Turing patterns exist even in the case of equal diffusion constants. Expand
Small Regulatory RNAs May Sharpen Spatial Expression Patterns
This work explores the possibility that small RNAs participate in sharpening a gene expression profile that was crudely established by a morphogen, and points out the functional significance of some mechanistic properties, such as mobility of smallRNAs and the irreversibility of their interactions. Expand