System approaches to biological threat
assessment and mitigation
Development and study of models for the conditions
of coexistence between groups (or nations)
Modeling of multiphase flows in
Modeling of hydrogen combustion
Principal investigator on a multi-laboratory project to develop a hydrogen-fueled engine for a stationary or vehicle power-plant with zero emissions and high efficiency.
Non-local theories in continuum mechanics
Studies on the reasonableness of continuum theories that use high-order spatial operators.
Stochastic particle treatments of multiphase injection
The modeling of liquid sprays using Lagrangian particles in Arbitrary Lagrangian-Eulerian (ALE) codes.
Modeling of high-power-density diesel engines and ultrahigh pressure fuel injection
Principal Investigator on multi-laboratory project to develop an opposed-piston diesel engine.
One of three designers in the development of a novel concept for inertially confined fusion.
Interface reconstruction in CAVEAT, an ALE code
Co-developed and implemented the first interface reconstruction of mixed cells in a nonorthogonal mesh.
Modeling of low speed viscoelastic and Newtonian flows
Developed an original numerical method for solving complex viscoelastic flow problems; included the first free-Lagrangian technique for incompressible fluid flow; also included artificial intelligence techniques in solution method.
Development of code for cavity radiation and radiation to outer surfaces
Extended an existing fluid-heat-stress finite element code to include a generalized radiation treatment and nonlinear and nonisotropic material properties.
Solving sets of highly nonlinear algebraic equations
Developed numerical convergence techniques for highly nonlinear algebraic equations that increase radius and speed of convergence, included first known technique that employed self-regulation (A.I.
techniques) to optimize convergence properties.
Non-equilibrium statistical mechanics in polymeric systems
Developed the first nonlinear molecular model to describe the change in non-Newtonian viscoelastic behavior from dilute to semidilute polymer solutions. Co-developed the first nonlinear chain model for describing nonlinear viscoelasticity.
Publications | Talks | Interests: Past & Present | Symbiotic Intelligence Project
Contact | Science of Diversity | Home | Links | Diversity Documents | Norman Johnson
Infectious Idea Spread using Epidemiological Modeling | Collective Intelligence in the presence of bias and misinformation
Community, Coexistence and Pre-conflict Minimization Projects | The CISS (Coexistence in Suggestive Simulations) Project