Y. C. Alicia Tang

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We propose a method for selecting reference anisotropic parameters in laterally varying anisotropic media for mixed Fourier-space domain wavefield extrapolation. We treat the selection problem as a quantization procedure, and use a modified version of the 3D Lloyd's algoritm for reference-parameter selections. We demonstrate that our method yields a more(More)
— Our work features an ontology-supported framework for developing a qualitative simulator for explaining the behaviors of selected sample of organic chemistry reactions. The design of the simulator uses Qualitative Reasoning (QR), and in particular, Qualitative Process Theory (QPT) for constructing qualitative models and the simulation of basic steps in(More)
I present a method to address the migration artifacts caused by insufficient offset coverage. I pose the migration as a least-squares inversion problem regularized with the differential semblance operator, followed by forcing a sparseness constraint in the subsurface-offset domain. I demonstrate that adding these regularization terms suppresses the(More)
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