Concept

Generalized linear mixed model

Publications associées (128)

Myocardial Motion Analysis from B-Mode Echocardiograms

Michaël Unser, Michael Sühling, Muthuvel Arigovindan

The quantitative assessment of cardiac motion is a fundamental concept to evaluate ventricular malfunction. We present a new optical-flow-based method for estimating heart motion from two-dimensional echocardiographic sequences. To account for typical hear ...

IEEE2005

Integrated Wavelet Processing and Spatial Statistical Testing of fMRI Data

Michaël Unser, Dimitri Nestor Alice Van De Ville, Thierry Blu

We introduce an integrated framework for detecting brain activity from fMRI data, which is based on a spatial discrete wavelet transform. Unlike the standard wavelet-based approach for fMRI analysis, we apply the suitable statistical test procedure in the ...

Elsevier2004

A class of multi-iterate methods to solve systems of nonlinear equations

Michel Bierlaire, Frank Crittin

A new class of methods for solving systems of nonlinear equations is introduced. The main idea is to build a linear model using a population of previous iterates. Contrarily to classical secant methods, where exact interpolation is used, we prefer a least ...

2004

Generalized model of planar SOFC repeat element for design optimization

François Maréchal, Daniel Favrat, Jan Van Herle, Diego Larrain

A model for planar solid oxide fuel cell repeat elements and stacks has been developed. Distribution of concentrations, reaction rates and temperatures (both gases and solids) are computed as well as overall performance results. Specific experiments provid ...

Elsevier2004

Variance-Covariance perturbation analysis of a Linear Model

Pierre-Yves Gilliéron, Bertrand Merminod

In this paper the perturbation influence properties of the stochastic model (variance-covariance) in linear models is discussed in detail. Some very useful formulae are established about the variance-covariance perturbation influence on the model parameter ...

2003

Upgrade of the present JET shape and vertical stability controller

Jonathan Bryan Lister

The development of linear model of the present JET (Joint European Torus) electromagnetic system has allowed the design of an optimized Plasma Shape Controller. Quite extreme plasma boundaries (elongation k = 1.9 and triangularity = 0.6) are shown ...

2003

Flow and turbulence in sharp open-channel bends

Koen Blanckaert

The sustainable development of rivers requires a knowledge on the three-dimensional mean flow field and the turbulence in complex morphologies. In a future, the computational capacity will be sufficient to simulate numerically the fine details of the flow. ...

EPFL2003

Progress of the international H-mode power threshold database activity

Yves Martin

The International Global H-mode Threshold Database has been revised and cleaned from inadequate data for some tokamaks. This significantly reduces the scatter for the corresponding datasets. The resulting new analyses including all ten tokamaks yields resu ...

2002

Comparing DINA code simulations with TCV experimental plasma equilibrium responses

Jonathan Bryan Lister

The DINA nonlinear time-dependent simulation code has been validated against an extensive set of plasma equilibrium response experiments carried out on the TCV tokamak. Limited and diverted plasmas are found to be well modelled during the plasma current fl ...

2001

Electroosmotic Flow in Composite Microchannels and Implications in Microcapillary Electrophoresis Systems

Hubert Girault, Patrik Willi Hoffmann, François Bianchi, Frank Rüdiger Wagner

The electroosmotic flow in laminated excimer laser-ablated microchannels has been studied as a function of the depth of the rectangular channels, and particular emphasis has been given to the difference in the ζ-potentials between the lamination layer and ...

2001

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