12 résultats : SCHERTZER DANIEL

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12 résultats
page 1 sur 2
résultats 1 à 10
UNIT
Description : We have seen during the previous lecture the concept of cascade phenomenology and the different models that can be found in the literature. It has been showed the cascade generation is based on the scale invariance propriety and the multiplicative process. The use of simulation is increasingly ...
Mots clés : complex systems in environment, environmental engineering, multi-scale simulation, random dynamical system, Markov processes, Brownian motion, ingénierie de l'environnement, système complexe, Multifractal simulation
Date : 14-04-2017
Droits : Cet ensemble de supports pédagogiques est la propriété, à parts égales, d’UNIT et de l'École des Ponts ParisTech. Il est régi par la licence logicielle GPL, dans sa version française CeCILL (http://www.cecill.info/licences/Licence_CeCILL-V1_VF.pdf).
UNIT
Description : We gave in the courses Multifractal the meaning of the universal multifractal (UM) parameters and , in this courses we will introduce some techniques of estimation of UM parameters based on the scale invariance property of geophysical fields. The first method is the Trace Moment (TM) method which ...
Mots clés : complex systems in environment, environmental engineering, methods of analysis, multifractal, trace moments, double trace moments, ingénierie de l'environnement, système complexe, Probability Distribution Multiple Scaling, Empirical Modal Decomposition
Date : 14-04-2017
Droits : Cet ensemble de supports pédagogiques est la propriété, à parts égales, d’UNIT et de l'École des Ponts ParisTech. Il est régi par la licence logicielle GPL, dans sa version française CeCILL (http://www.cecill.info/licences/Licence_CeCILL-V1_VF.pdf).
UNIT
Description : The multifractal analysis is an appropriate framework for addressing and modelling fields with high spatial and temporal variability, particularly with regard to the characteristics of non-uniformity of the phenomena and their extreme behavior. Therefore, the idea of applying this concepts to the ...
Mots clés : complex systems in environment, environmental engineering, multifractal theory, multiscale analysis, extremes, universal multifractal model, ingénierie de l'environnement, système complexe
Date : 14-04-2017
Droits : Cet ensemble de supports pédagogiques est la propriété, à parts égales, d’UNIT et de l'École des Ponts ParisTech. Il est régi par la licence logicielle GPL, dans sa version française CeCILL (http://www.cecill.info/licences/Licence_CeCILL-V1_VF.pdf).
UNIT
Description : In meteorology, oceanology, climatology, hydrology and more generally in geophysics, the researches (turbulence, chaos, global climate evolution understanding, tectonic, seismology...), in studies (strategies definition of sampling for the next generation satellite, estimation of extreme fluctuations ...
Mots clés : complex systems in environment, environmental engineering, extreme variability, multiscale analysis, Fractal, Hausdorff dimension, Von Koch snowflake, Cantor set, Sierpinski carpet, Box counting, Co-dimension, ingénierie de l'environnement, système complexe
Date : 14-04-2017
Droits : Cet ensemble de supports pédagogiques est la propriété, à parts égales, d’UNIT et de l'École des Ponts ParisTech. Il est régi par la licence logicielle GPL, dans sa version française CeCILL (http://www.cecill.info/licences/Licence_CeCILL-V1_VF.pdf).
UNIT
Description : We introduce in this lecture the spectral analysis which is based on the Fourier transform. The main objective of using this can of analysis in our studies is to check the scale invariance propriety of the studied field and also to identify the involved processes. The spectral analysis is widely ...
Mots clés : complex systems in environment, environmental engineering, spectral analysis, Fast Fourier transform FFT, Discrete Fourier transform DFT, Power spectral density, scaling analysis, système complexe, generalized scale invariance (GSI)
Date : 14-04-2017
Droits : Cet ensemble de supports pédagogiques est la propriété, à parts égales, d’UNIT et de l'École des Ponts ParisTech. Il est régi par la licence logicielle GPL, dans sa version française CeCILL (http://www.cecill.info/licences/Licence_CeCILL-V1_VF.pdf).
UNIT
Description : Multiplicative cascade processes are frequently used as phenomenological models for the study of a variety of complex systems exhibiting fractal/multifractal behavior. In particular the energy dissipation field of fully developed turbulent flows has been most successfully modeled in such terms, ...
Mots clés : complex systems in environment, environmental engineering, cascade phenomenology, multiplicative cascade model, intermittency, discrete cascade, auto-Similar spatial cascade, Self-affine cascade, ingénierie de l’environnement, système complexe, generalized scale invariance (GSI)
Date : 14-04-2017
Droits : Cet ensemble de supports pédagogiques est la propriété, à parts égales, d’UNIT et de l'École des Ponts ParisTech. Il est régi par la licence logicielle GPL, dans sa version française CeCILL (http://www.cecill.info/licences/Licence_CeCILL-V1_VF.pdf).
UNIT
Description : When we describe the evolution of a system we use several variables, i.e. a set of magnitudes, functions of space and time, the values of which define everything we know about the system completely and unambiguously. Then, the evolution of the systems is given by the evolution of the set of variables, ...
Mots clés : complex systems in environment, environmental engineering, dynamical systems, non-linear dynamical system, chaos, Saddle-Node Bifurcation, Pitchfork Bifurcation, Hopf Bifurcation, ingénierie de l’environnement, système complexe
Date : 14-04-2017
Droits : Cet ensemble de supports pédagogiques est la propriété, à parts égales, d’UNIT et de l'École des Ponts ParisTech. Il est régi par la licence logicielle GPL, dans sa version française CeCILL (http://www.cecill.info/licences/Licence_CeCILL-V1_VF.pdf).
UNIT
Description : We saw in the previous lesson some complex systems that can be found in environment. We also highlighted that there is non single definition of complexity. Through this lesson we will focus on the sources of complexity in a given system, what are the issues that can arise for the best model a complex ...
Mots clés : complex systems in environment, environmental engineering, complex systems, non-linearity, variability, Navier-Stokes equations, equation of motion, equation of state, ingénierie de l’environnement, système complexe
Date : 14-04-2017
Droits : Cet ensemble de supports pédagogiques est la propriété, à parts égales, d’UNIT et de l'École des Ponts ParisTech. Il est régi par la licence logicielle GPL, dans sa version française CeCILL (http://www.cecill.info/licences/Licence_CeCILL-V1_VF.pdf).
UNIT
Description : The environment is a social issue that continues to grow in importance. Its complexity, both cross-disciplinary and multi-scale, has given rise to a large number of scientific and technological locks, that complex systems approaches can solve. Through this module we will give some examples of complex ...
Mots clés : complex systems in environment, environmental engineering, complex systems, water cycle, atmospheric motion, hydrodynamic, ecology, karst, ingénierie de l’environnement, système complexe
Date : 14-04-2017
Droits : Cet ensemble de supports pédagogiques est la propriété, à parts égales, d’UNIT et de l'École des Ponts ParisTech. Il est régi par la licence logicielle GPL, dans sa version française CeCILL (http://www.cecill.info/licences/Licence_CeCILL-V1_VF.pdf).
UNIT
Description : The environment is a social issue that continues to grow in importance. Its complexity, both cross-disciplinary and multi-scale, has given rise to a large number of scientific and technological locks, that can be solved using a complex systems approaches. Through this courses we will give some e ...
Mots clés : complex systems in environment, environmental engineering, complex systems, dynamical systems, cascade phenomenology, spectral analysis, multiScale analysis, multifractal analysis, multiScale simulations, Extreme Value Theory, resilience, ingénierie de l’environnement, système complexe
Date : 14-04-2017
Droits : Cet ensemble de supports pédagogiques est la propriété, à parts égales, d’UNIT et de l'École des Ponts ParisTech. Il est régi par la licence logicielle GPL, dans sa version française CeCILL (http://www.cecill.info/licences/Licence_CeCILL-V1_VF.pdf).