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In a sparse-representation-based face recognition scheme, the desired dictionary should have good representational power (i.e., being able to span the subspace of all faces) while supporting optimal discrimination of the classes (i.e., different human subjects). We propose a method to learn an over-complete dictionary that attempts to simultaneously achieve(More)
Pluripotent stem cells can be induced from somatic cells, providing an unlimited cell resource, with potential for studying disease and use in regenerative medicine. However, genetic manipulation and technically challenging strategies such as nuclear transfer used in reprogramming limit their clinical applications. Here, we show that pluripotent stem cells(More)
Smartphone sales have recently experienced explosive growth. Their popularity also encourages malware authors to penetrate various mobile marketplaces with malicious applications (or apps). These malicious apps hide in the sheer number of other normal apps, which makes their detection challenging. Existing mobile anti-virus software are inadequate in their(More)
One of the unique features of beta-cells is their relatively low expression of many antioxidant enzymes. This could render beta-cells susceptible to oxidative damage but may also provide a system that is sensitive to reactive oxygen species as signals. In isolated mouse islets and INS-1(832/13) cells, glucose increases intracellular accumulation of H2O2. In(More)
The naked mole rat (Heterocephalus glaber) is a strictly subterranean, extraordinarily long-lived eusocial mammal. Although it is the size of a mouse, its maximum lifespan exceeds 30 years, making this animal the longest-living rodent. Naked mole rats show negligible senescence, no age-related increase in mortality, and high fecundity until death. In(More)
Yang Zhao,1,4 Xiaolei Yin,1,2,4 Han Qin,1,2,4 Fangfang Zhu,1,2,5 Haisong Liu,1,2,5 Weifeng Yang,1,5 Qiang Zhang,1,2,5 Chengang Xiang,1,2,5 Pingping Hou,1,5 Zhihua Song,1,2 Yanxia Liu,1,2 Jun Yong,1 Pengbo Zhang,1 Jun Cai,1 Meng Liu,1,2 Honggang Li,1 Yanqin Li,1 Xiuxia Qu,1 Kai Cui,1 Weiqi Zhang,1 Tingting Xiang,1 Yetao Wu,1,2 Yiding Zhao,1 Chun Liu,1,2 Chen(More)
Global Hg emissions are presented for the year 2050 under a variety of assumptions about socioeconomic and technology development. We find it likely that Hg emissions will increase in the future. The range of 2050 global Hg emissions is projected to be 2390-4860 Mg, compared to 2006 levels of 2480 Mg, reflecting a change of -4% to +96%. The main driving(More)