Jing Yun Yuan

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In PCA based face recognition, the basis images may contain negative pixels and thus do not facilitate physical interpretation. Recently, the technique of nonnegative matrix Factorization (NMF) has been applied to face recognition: the non-negativity constraint of NMF yields a localized parts-based representation which achieves a recognition rate that is on(More)
Bone marrow mesenchymal stem cells can reduce retinal ganglion cell death and effectively prevent vision loss. Previously, we found that during differentiation, female rhesus monkey bone marrow mesenchymal stem cells acquire a higher neurogenic potential compared with male rhesus monkey bone marrow mesenchymal stem cells. This suggests that female bone(More)
We studied the activity of matrix metalloproteinases (MMP) 2 and 9 generated by cultured rabbit corneal epithelium cells that had been stimulated with tumor necrosis factor alpha (TNF-α), to investigate the possible regulative mechanisms of MMP-2/9 and their potential effect on corneal inflammatory diseases. The rabbit corneal epithelium cells were cultured(More)
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