idk what I'm looking at but looks great :)

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Full Order-N Similarity Theory (Zhao et al. 2014) for SSS. Single-lobe HG at high anisotropy makes light "tunnel" through the material in a tight directional beam rather than diffusing broadly. With ONST we've better looking results, smoother and way faster .. 2:54 vs 4:05 (shark).

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geometric optics from the wave equation! turbulence modeling with RANS and LES et al! homogenization!

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The second idea here is a natural tie in to a whole lot of amazingly cool applied math — starting from a baseline fine-scale model, approximating its solution in a nonlinear way that abstracts away the fine-scale variations so we can focus on the larger scale behaviour

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One of the basics of numerical analysis which took me far too long to internalize, and for which there is still a lot of misunderstanding out there in graphics, is the notion of stiffness in time integration, and associated ideas of time step selection, stability, and modeling.

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