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Doug L. Theodore Kim and Doug L. Best paper award. The method supports quasistatic and dynamic deformations, nonlinear kinematics and materials, and can achieve interactive time-stepping rates. To avoid artificial rigidity, or "locking," associated with coupling low-rank domain models together with hard constraints, we employ penalty-based coupling forces. The multi-domain subspace integrator can simulate deformations efficiently, and exploits efficient subspace-only evaluation of constraint forces between rotated domains using the so-called Fast Sandwich Transform FST. Examples are presented for articulated characters with quasistatic and dynamic deformations, and interactive performance with hundreds of fully coupled modes. Using our method, we have observed speedups of between three and four orders of magnitude over full-rank, unreduced simulations. We use linear modal analysis to generate a small-deformation displacement basis, then couple the modes together using nonlinear thin-shell forces. To enable audio-rate time-stepping of mode amplitudes with mesh-independent cost, we propose a reduced-order dynamics model based on a thin-shell cubature scheme.
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Doug James is a Canadian journalist, best known for his work as a foreign correspondent for CNN where he covered the Gulf War ,     the Palestinian Intifada and the fall of the Berlin Wall. He currently works as a freelance writer and voice over artist and is a sessional lecturer in Media Law and Ethics at Wilfrid Laurier University in Brantford, Ontario Winter, From Wikipedia, the free encyclopedia. Toronto Star , March 3, Johanna Neuman. Rutgers University Press. Retrieved Toronto Star , November 12,
Doug L. He holds three degrees in applied mathematics, including a Ph. His research interests include computer graphics, computer sound, physically based modeling and animation, and reduced-order physics models.