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Alborzi S.Z.,Nanyang Technological University | Maduranga D.A.K.,Nanyang Technological University | Fan R.,Nanyang Technological University | Rajapakse J.C.,Nanyang Technological University | And 3 more authors.
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) | Year: 2014

Reverse engineering of the Gene Regulatory Networks (GRNs) from high-throughput gene expression data is one of the most pressing challenges of computational biology. In this paper a method for parallelization of the Gene Regulatory Network inference algorithm, GENIE3, based on GPU by exploiting the compute unified device architecture (CUDA) programming model is designed and implemented. GENIE3 solves regulatory network prediction by developing tree based ensemble of Random forests. Our proposed method significantly improves the computational efficiency of GENIE3 by constructing the forest on the GPU in parallel. Our experiments on real and synthetic datasets show that, CUDA implementation outperforms sequential implementation by achieving a speed-up of 15 times (real data) and 14 to 18 times (synthetic data) respectively. © 2014 Springer International Publishing Switzerland. Source

Masudy-Panah S.,A STAR Agency for Science | Siavash Moakhar R.,A STAR Agency for Science | Chua C.S.,A STAR Agency for Science | Tan H.R.,A STAR Agency for Science | And 3 more authors.
ACS Applied Materials and Interfaces | Year: 2016

Cupric oxide (CuO) thin film was sputtered onto fluorine-doped tin oxide (FTO) coated glass substrate and incorporated into a photoelectrochemical (PEC) cell as a photocathode. Through in situ nanocrystal engineering, sputtered CuO film shows an improvement in its stability and photocurrent generation capability. For the same CuO film thickness (150 nm), films deposited at a sputtering power of 300 W exhibit a photocurrent of ∼0.92 mAcm-2 (0 V vs RHE), which is significantly higher than those deposited at 30 W (∼0.58 mAcm-2). By increasing the film thickness to 500 nm, the photocurrent is further enhanced to 2.5 mAcm-2, which represents a photocurrent conversion efficiency of 3.1%. Systematic characterization using Raman, XRD, and HR-TEM reveals that the high sputtering power results in an improvement in CuO film crystallinity, which enhances its charge transport property and, hence, its photocurrent generation capabilities. © 2015 American Chemical Society. Source

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