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We present some results on a fully nonlinear version of the Yamabe problem and a Harnack type inequality for general conformally invariant fully nonlinear second order elliptic equations. To cite this article: A. Li, Y.Y. Li, C. R. Acad. Sci. Paris, Ser. I 336 (2003).  2003 Académie des sciences/Éditions scientifiques et médicales Elsevier SAS. All rights(More)
We report on an ongoing effort to build a Dynamic Data Driven Application System (DDDAS) for short-range forecast of wildfire behavior from real-time weather data, images, and sensor streams. The system should change the forecast when new data is received. The basic approach is to encapsulate the model code and use an ensemble Kalman filter in time-space.(More)
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