2 papers
math.NA2011
Structure Assisted NMF Methods for Separation of Degenerate Mixture Data with Application to NMR Spectroscopy
Yuanchang Sun, Kai Huang, Jack Xin
In this paper, we develop structure assisted nonnegative matrix factorization (NMF) methods for blind source separation of degenerate data. The motivation originates from nuclear m…
math.AP2005
Variational Principle of KPP Front Speeds in Temporally Random Shear Flows
James Nolen, Jack Xin
We establish the variational principle of Kolmogorov-Petrovsky-Piskunov (KPP) front speeds in temporally random shear flows inside an infinite cylinder, under suitable assumptions…