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Article
Open AccessHighly inclined light sheet allows volumetric super-resolution imaging of efflux pumps distribution in bacterial biofilms
Bacterial biofilms are highly complex communities in which isogenic bacteria display different gene expression patterns and organize in a three-dimensional mesh gaining enhanced resistance to biocides. The mol...
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Article
Open AccessA robust route to randomness in a simple Cournot duopoly game where ambiguity aversion meets constant expectations
In this paper we investigate the dynamics of a duopoly game with ambiguity aversion regarding uncertainty in demand and constant expectations concerning competitor production. The focus is on an asymmetric Cou...
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Article
Open Accessα-catenin switches between a slip and an asymmetric catch bond with F-actin to cooperatively regulate cell junction fluidity
α-catenin is a crucial protein at cell junctions that provides connection between the actin cytoskeleton and the cell membrane. At adherens junctions (AJs), α-catenin forms heterodimers with β-catenin that are...
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Protocol
High-Speed Optical Tweezers for the Study of Single Molecular Motors
Mechanical transitions in molecular motors often occur on a submillisecond time scale and rapidly follow binding of the motor with its cytoskeletal filament. Interactions of nonprocessive molecular motors with...
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Article
Self-similarity of the bandcount adding structures: Calculation by map replacement
Recently it has been demonstrated that the domain of robust chaos close to the periodic domain, which is organized by the period-adding structure, contains an infinite number of interior crisis bifurcation cur...
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Article
Snap-back repellers in non-smooth functions
In this work we consider the homoclinic bifurcations of expanding periodic points. After Marotto, when homoclinic orbits to expanding periodic points exist, the points are called snap-back-repellers. Several p...
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Chapter and Conference Paper
Heterogeneous Models with Learning and Homoclinic Bifurcations
We analyze a class of models representing heterogeneous agents with adaptively rational rules. The models reduce to non invertible maps of R2. In particular we shall investigate the homoclinic bifurcation of the ...
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Article
Poincaré maps of impulsed oscillators and two-dimensional dynamics
The Poincaré map of one-dimensional linear oscillators subject to periodic, non-linear and time-delayed impulses is shown to reduce to a family of plane maps with possible non-uniqueness of the inverse. By res...
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Article
Hopf bifurcation and transition to chaos in Lotka-Volterra equation
It is shown that in a suitable class of Lotka-Volterra systems it is possible to characterize the centre-critical case of the Hopf bifurcation of the multipopulation equilibrium. Moreover, for three population...
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Article
Bifurcations and instabilities in a low-order discrete model of rotating fluid
In a low-order model of barotropic, quasi-geostrophic flow on a rotating atmosphere, representing an arbitrary forced zonal flow interacting with two waves, hysteretic cycles are shown and steady and periodic ...
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Article
Chaotic attractors in a three-mode model of forced, dissipative, rotating fluid
We analyse the bifurcations occurring in the attracting set of a system of three ordinary differential equations representing a minimal model for forced, dissipative, two-dimensional flows in a rotating fluid,...
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Article
Hopf bifurcations and period-doubling transitions in Rössler model
The Rössler system of equations is studied by both analytic and numerical techniques. The appearance of limit cycles in one-parameter families, not related to a Hopf bifurcation, is explained by the analysis o...
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Article
Transition to chaos in a three-mode model of forced, dissipative flow in a rotating fluid
For a truncated triadic model of the barotropic vorticity equation of two-dimensional rotating fluid the mechanism of successive bifurcations to chaotic attractors is evidentiated. It is suggested that the tra...
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Article
Stability of axisymmetric motions in a rotating inviscid atmosphere
Si studiano le soluzioni di un sistema di equazioni differenziali ordinarie che rappresentano il troncamento a poche componenti di Fourier dell'equazione di conservazione della vorticità per moti bidimensional...
