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Moment approach of the multi-species non-linear Coulomb collision operator adapted to particle-in-cell codes

Publications associées (51)

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Preisach distribution function approach to piezoelectric nonlinearity and hysteresis

Nava Setter, Dragan Damjanovic

The Preisach approach was used to describe the widely observed quadratic field dependence of the direct longitudinal piezoelectric coefficient and its associated hysteresis loop. In this perspective, a four parameters distribution function was put forward ...

2001

Neoclassical transport coefficients for general axisymmetric equilibria in the banana regime

Olivier Sauter

Using the standard approach of neoclassical theory, a set of relatively simple kinetic equations has been obtained, suited for an implementation in a numerical code to compute a related set of distribution functions. The transport coefficients are then exp ...

2000

Preisach modeling of ferroelectric pinched loops

Nava Setter, Dragan Damjanovic

The Preisach approach is applied to model ferroelectric pinched (or constricted) loops. Starting from the existence of distributed switchable dipolar defects in the material and a corresponding distribution function, an analytical expression for the result ...

2000

Estimating Distribution Functions with Smoothing Splines

Eva Maria Restle

The scope is to smooth the empirical distribution function of a random sample by minimizing a penalized sum of squared errors. The spline, which is the solution to this problem, is studied via the eigenvalue structure of the random matrices ocurring in its ...

1999

Correcting Jackknife Confidence Intervals

This paper presents a method for constructing confidence intervals using the jackknife. Asymptotic expansions are used to assess and reduce the skewness. It is proved that, although the error in the coverage rate remains of order O(1/n) for two-sided inter ...

1998

The correlated product state distribution of ketene photodissociation at 308 nm

Marcel Drabbels

The correlated product state distribution for ketene photodissociation (CH2CO-->CH2+CO) at 308 nm has been measured by using quantum-state-specific metastable time-of-flight (TOF) spectroscopy. This distribution is a matrix whose elements are the probabili ...

American Institute of Physics1996

Scaling laws for river networks

Andrea Rinaldo, Amos Maritan

Seemingly unrelated empirical hydrologic laws and several experimental facts related to the fractal geometry of the river basin are shown to find a natural explanation into a simple finite-size scaling ansatz for the power laws exhibited by cumulative dist ...

1996

Composite power laws in shock fragmentation

Anders Meibom

Inspired by the discovery of Oddershede et al. [Phys. Rev. Lett. 71, 3107 (1993)] concerning the dimensionality dependence of mass distributions after shock fragmentation, we have performed further experiments using thick plates of dry clay. We observe mas ...

1996

Dielectric Tensor Operator of Hot Plasmas in Toroidal Axisymmetrical Systems

Stephan Brunner

Kinetic theory is used to develop equations describing dynamics of small-amplitude electromagnetic perturbations in toroidal axisymmetric plasmas. The closed Vlasov-Maxwell equations are first solved for a hot stationary plasma using the expansion in the s ...

1993

Learning Hawkes Processes Under Synchronization Noise

Patrick Thiran, Matthias Grossglauser, Negar Kiyavash, Seyed Jalal Etesami, William Trouleau

Multivariate Hawkes processes (MHP) are widely used in a variety of fields to model the occurrence of discrete events. Prior work on learning MHPs has only focused on inference in the presence of perfect traces without noise. We address the problem of lear ...

MLR Press0