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.
Cooperative self-organization of microorganisms
- E. Ben-Jacob, I. Cohen, H. Levine
- 1 June 2000
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.
Bacterial linguistic communication and social intelligence.
- E. Ben Jacob, Israela Becker, Y. Shapira, H. Levine
- BiologyTrends in Microbiology
- 1 August 2004
Phase-field model of mode III dynamic fracture.
- A. Karma, D. Kessler, H. Levine
- PhysicsPhysical Review Letters
- 2 May 2001
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.
Coupling actin flow, adhesion, and morphology in a computational cell motility model
- Danying Shao, H. Levine, W. Rappel
- BiologyProceedings of the National Academy of Sciences
- 9 April 2012
A computational model for cell motion is developed that uses the phase-field method to solve for the moving boundary with physical membrane properties and suggests that the pattern of the actin flow inside the cell, the cell velocity, and the cell morphology are determined by the integration of actin polymerization, myosin contraction, adhesion forces, and membrane forces.
Incoherent Feedforward Control Governs Adaptation of Activated Ras in a Eukaryotic Chemotaxis Pathway
- K. Takeda, Danying Shao, R. Firtel
- BiologyScience Signaling
- 3 January 2012
The dynamical response to a uniform change in chemoattractant concentration of a eukaryotic chemotaxis pathway immediately downstream from G protein–coupled receptors is determined.
Directional sensing in eukaryotic chemotaxis: a balanced inactivation model.
- H. Levine, D. Kessler, W. Rappel
- BiologyProceedings of the National Academy of Sciences…
- 27 June 2006
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.
The Astrocyte as a Gatekeeper of Synaptic Information Transfer
- V. Volman, E. Ben-Jacob, H. Levine
- BiologyNeural Computation
- 7 December 2006
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.
Membrane-bound Turing patterns.
- H. Levine, W. Rappel
- Computer SciencePhysical 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.
Pattern selection in fingered growth phenomena
- D. Kessler, J. Koplik, H. Levine
- 1 May 1988
Abstract A variety of non-equilibrium growth processes are characterized by phase boundaries consisting of moving fingers, often with interesting secondary structures such as sidebranches. Familiar…