Extending first principle plasma-surface simulations to experimentally relevant scales

Molecular dynamics simulations for plasma-surface interactions

First-principle simulations of electronic structure in semicrystalline polyethylene

In order to increase our fundamental knowledge about high-voltage cable insulation materials, realistic polyethylene (PE) structures, generated with a novel molecular modeling strategy, have been analyzed using first principle electronic structure simulations. The PE structures were constructed by first generating atomistic PE configurations with an off-lattice Monte Carlo method and then equil...

Extending the Extreme Physical Information to Universal Cognitive Models via a Confident Information First Principle

The principle of extreme physical information (EPI) can be used to derive many known laws and distributions in theoretical physics by extremizing the physical information loss K, i.e., the difference between the observed Fisher information I and the intrinsic information bound J of the physical phenomenon being measured. However, for complex cognitive systems of high dimensionality (e.g., human...

UW-CPTC 08-1 Global axisymmetric simulations of two-fluid reconnection in an experimentally relevant geometry

To address the interplay between local and global effects in magnetic reconnection, axisymmetric numerical simulations for the Magnetic Reconnection Experiment [M. Yamada et al., Phys. Plasmas 4, 1936 (1997)] are performed using the NIMROD code [C.R. Sovinec et al., J. Comp. Phys. 195, 355 (2004)]. The ‘pull’ and ‘push’ modes of the device are simulated both with and without two-fluid effects i...

Extending LaSalle’s Invariance Principle to Switched Linear Systems

In this paper we extend LaSalle’s Invariance Principle to certain classes of switched linear systems. In particular we illustrated how to prove asymptotic stability using multiple Lyapunov functions whose Lie derivatives are only negative semi-definite.