Publications associées à State space (physics)

Two-step phase demodulation algorithm based on quadratic phase parameter estimation using state space analysis

Pramod Rastogi, Rishikesh Dilip Kulkarni

We propose a noise robust two-step phase shifting algorithm for the evaluation of random and unknown phase step. In this algorithm, the phase within a small size two-dimensional window around a user selected pixel in an interferogram is approximated as a q ...

2018

Local-polynomial-approximation-based phase unwrapping using state space analysis

Pramod Rastogi, Rishikesh Dilip Kulkarni

A new method of phase unwrapping is proposed for the absolute phase estimation based on the first-order polynomial phase approximation within a symmetric window generated around each pixel. The accurate estimation of polynomial coefficients is performed by ...

2017

MATHICSE Technical Report : Numerical approximation of parametrized problems in cardiac electrophysiology by a local reduced basis method

Alfio Quarteroni, Andrea Manzoni, Stefano Pagani

The efficient solution of coupled PDEs/ODEs problems arising in cardiac electrophysiology is of key importance whenever interested to study the electrical behavior of the tissue for several instances of relevant physical and/or geometrical parameters. This ...

MATHICSE2017

On sums of eigenvalues of elliptic operators on manifolds

Joachim Stubbe

We use the averaged variational principle introduced in a recent article on graph spectra [10] to obtain upper bounds for sums of eigenvalues of several partial differential operators of interest in geometric analysis, which are analogues of Kroger's bound ...

European Mathematical Soc2017

Concept and Applications of Extents in Chemical Reaction Systems

Dominique Bonvin, Julien Léo Billeter, Michael Amrhein, Sriniketh Srinivasan, Diogo Filipe Mateus Rodrigues

Models of chemical reaction systems can be quite complex as they typically include information regarding the reactions, the various transfers of heat and mass, as well as the effects of the inlet and outlet flows. It is well known that a linear transformat ...

2017

MATHICSE Technical Report : Multilevel ensemble Kalman filtering for spatio-temporal processes

Fabio Nobile, Hakon Andreas Hoel

This work concerns state-space models, in which the state-space is an infinite-dimensional spatial field, and the evolution is in continuous time, hence requiring approximation in space and time. The multilevel Monte Carlo (MLMC) sampling strategy is lever ...

MATHICSE2017

Soft Constrained Model Predictive Control With Robust Stability Guarantees

Colin Neil Jones, Melanie Nicole Zeilinger

Soft constrained model predictive control (MPC) is frequently applied in practice in order to ensure feasibility of the optimization during online operation. Standard techniques offer global feasibility by relaxing state or output constraints, but cannot e ...

Institute of Electrical and Electronics Engineers2014

Increasing Lifetimes and the Growing Saddles of Shear Flow Turbulence

Tobias Schneider, Tobias Klaus Kreilos

In linearly stable shear flows, turbulence spontaneously decays with a characteristic lifetime that varies with Reynolds number. The lifetime sharply increases with Reynolds number so that a possible divergence marking the transition to sustained turbulenc ...

American Physical Society2014

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State space (physics)

Two-step phase demodulation algorithm based on quadratic phase parameter estimation using state space analysis

When droplets deform, break up and propel microswimmers

Local-polynomial-approximation-based phase unwrapping using state space analysis

MATHICSE Technical Report : Numerical approximation of parametrized problems in cardiac electrophysiology by a local reduced basis method

On sums of eigenvalues of elliptic operators on manifolds

Concept and Applications of Extents in Chemical Reaction Systems

MULTILEVEL ENSEMBLE KALMAN FILTERING FOR SPATIO-TEMPORAL PROCESSES

MATHICSE Technical Report : Multilevel ensemble Kalman filtering for spatio-temporal processes

Soft Constrained Model Predictive Control With Robust Stability Guarantees

Increasing Lifetimes and the Growing Saddles of Shear Flow Turbulence

Graph Chatbot

Chattez avec Graph Search

Local-polynomial-approximation-based phase unwrapping using state space analysis

MATHICSE Technical Report : Multilevel ensemble Kalman filtering for spatio-temporal processes

MULTILEVEL ENSEMBLE KALMAN FILTERING FOR SPATIO-TEMPORAL PROCESSES

On sums of eigenvalues of elliptic operators on manifolds

Soft Constrained Model Predictive Control With Robust Stability Guarantees

Two-step phase demodulation algorithm based on quadratic phase parameter estimation using state space analysis

When droplets deform, break up and propel microswimmers

Concept and Applications of Extents in Chemical Reaction Systems

MATHICSE Technical Report : Numerical approximation of parametrized problems in cardiac electrophysiology by a local reduced basis method

Increasing Lifetimes and the Growing Saddles of Shear Flow Turbulence