Gallery (33 different pictures):

Collaborative Works

[Galerie (33 images différentes) : Travaux Collaboratifs]

Collaborative Works [Travaux Collaboratifs]:

Collaborative Works [Travaux Collaboratifs]:

Claude Bardos and François Golse:

Chaotic trajectory: multiple reflexions between two parallel planes -static view-.

Chaotic trajectory: multiple reflexions between two parallel planes for 64 different initial conditions.

Chaotic trajectory: multiple reflexions between two parallel planes -rotating views-.

Density of chaotic trajectories.

Dynamics of the density of chaotic trajectories.

Chaotic trajectory: multiple reflexions between two parallel planes -rotating views, non diffusive case-.




Jean-Louis Basdevant:

• See pictures of the hydrogen atom.
• See pictures of the diffraction phenomenon.



Marie Farge:

Tridimensional display of the wavelet transform (colors=module, grey lines=0-phase lines) of a bidimensional vorticity field.

Wavelet filtering of a bidimensional turbulent field.

Wavelet reconstruction of a bidimensional turbulent field using the 16 first dilatations.

The vorticity of a tridimensional turbulent field.




Jean-Alain Marck:

The Jean-Alain Marck's travel around a black hole -the world first computation on 12/1989-.

The Jean-Alain Marck's travel around a black hole -the world first computation on 12/1989-.




Andrea Baldassarri, Andrea Gabrielli and Bernard Sapoval:

Erosion of a bidimensional random (with small and large scale correlations) medium.	Erosion of a bidimensional random (with small and large scale correlations) medium.	Erosion of a bidimensional random island.	Erosion of a bidimensional random island.	Erosion of a bidimensional random island.
Erosion of a bidimensional random island.	Erosion of a set of four bidimensional random islands.	Erosion of a bidimensional random (with small scale correlations) island.	Erosion of a bidimensional random (with small scale correlations) island.	Erosion of a bidimensional random (with small scale correlations) island.
Erosion of a bidimensional random (with small scale correlations) island.	Erosion of a set of four bidimensional random (with small scale correlations) islands.	Erosion of a bidimensional random (with large scale correlations) island.	Erosion of a bidimensional random (with large scale correlations) island.	Erosion of a bidimensional random (with large scale correlations) island.
Erosion of a bidimensional random (with large scale correlations) island.	Erosion of a bidimensional random (with large scale correlations) island.	Erosion of a set of four bidimensional random (with large scale correlations) islands.	Erosion of a bidimensional random (with small and large scale correlations) island.	Erosion of a bidimensional random (with small and large scale correlations) island.
Erosion of a bidimensional random (with small and large scale correlations) island.	Erosion of a bidimensional random (with small and large scale correlations) island.	Erosion of a set of four bidimensional random (with small and large scale correlations) islands.	Erosion of a bidimensional random (with small and large scale correlations) medium by means of an heterogeneous sea.

Erosion of a tridimensional random medium.

Erosion of a tridimensional random medium.




• See more realistic pictures of bidimensional erosion.
• See more realistic pictures of tridimensional erosion.



Marcel Filoche and Bernard Sapoval:

Diffusion inside a tridimensional fractal structure.




Jean-François Gouyet, Michel Rosso and Bernard Sapoval:

• See pictures of fractal diffusion fronts in a bidimensional medium.




The first documentary -1985- about the Fractal Structure of the Diffusion Front [Le premier documentaire -1985- sur la structure fractale d'un front de diffusion]




Hiroko Kitaoka and Bernard Sapoval:

• See pictures of the human pulmonary acinus.



Min-Yeong Kang and Bernard Sapoval:

Diffusion Velocity -left- and Convexion Velocity -right- in the human pulmonary acinus -rest-.

Diffusion Velocity -left- and Convexion Velocity -right- in the human pulmonary acinus -rest-.

Oxygen pressure -left- and Convexion Velocity -right- in the human pulmonary acinus -rest-.

Oxygen pressure -left- and Convexion Velocity -right- in the human pulmonary acinus -rest-.

Diffusion Velocity -left- and Convexion Velocity -right- in the human pulmonary acinus -exercise-.

Diffusion Velocity -left- and Convexion Velocity -right- in the human pulmonary acinus -exercise-.

Oxygen pressure -left- and Convexion Velocity -right- in the human pulmonary acinus -exercise-.

Oxygen pressure -left- and Convexion Velocity -right- in the human pulmonary acinus -exercise-.






A 05x05 random bidimensional network.

A 05x05 random bidimensional network with 'dilatation' of the 'backbone'.

A 07x07 random bidimensional network.

A 07x07 random bidimensional network with 'dilatation' of the 'backbone'.

A 10x10 random bidimensional network.

A 10x10 random bidimensional network with 'dilatation' of the 'backbone'.

A 15x15 random bidimensional network.

A 15x15 random bidimensional network with 'dilatation' of the 'backbone'.

A 20x20 random bidimensional network.

A 20x20 random bidimensional network.

A 20x20 random bidimensional network with 'dilatation' of the 'backbone'.

A 30x30 random bidimensional network.

A 30x30 random bidimensional network with 'dilatation' of the 'backbone'.

A 40x40 random bidimensional network.

A 40x40 random bidimensional network with 'dilatation' of the 'backbone'.

A 40x40 random bidimensional network.

A 40x40 random bidimensional network with 'dilatation' of the 'backbone'.

A 50x50 random bidimensional network.

A 50x50 random bidimensional network with 'dilatation' of the 'backbone'.






Kiran Kolwankar and Bernard Sapoval:

Etching of a bidimensional random medium with a uniform temperature.

Etching of a bidimensional random medium with a non uniform temperature -'gaussian' like-.

Etching of a bidimensional random medium with a non uniform temperature -'archimedian' like-.

Etching of a tridimensional random medium.




• See more realistic pictures of bidimensional etching.



Stephanie Russ and Bernard Sapoval:

Vibration of a fractal drum (Dirichlet boundary conditions, mode=1).

Vibration of a fractal drum (Dirichlet boundary conditions, mode=2).

Vibration of a fractal drum (Dirichlet boundary conditions, mode=3).

Vibration of a fractal drum (Dirichlet boundary conditions, mode=4).




Marcel Filoche:

The electric potential around a tridimensional fractal electrode.




Jean-François Gouyet and Mathis Plapp:

Spinodal decomposition of a binary alloy.




France Telecom ("Churn"):

Data-mining: identification of 'churning' customers.

Copyright © Jean-François COLONNA, 2002-2024.
Copyright © France Telecom R&D and CMAP (Centre de Mathématiques APpliquées) UMR CNRS 7641 / École polytechnique, Institut Polytechnique de Paris, 2002-2024.