Publications by authors named "Xingchi Ma"
Article Synopsis
- * The threshold voltage maintains stability with a minimal variation of 0.1 V, and off-state leakage current only slightly increases under high temperatures (from 2.87 × 10 to 1.85 × 10 mA/mm).
- * High temperatures introduce two trap states that slightly degrade performance, but overall, the findings support AlGaN HEMT's suitability for high-temperature applications, advancing the field of ultra-wide gap semiconductors. *
To eliminate the effect of subjective factors during manually determining the pearlite spheroidization grade of steel by analysis of optical metallography images, a novel method combining image mining and artificial neural networks (ANN) is proposed. The four co-occurrence matrices of angular second moment, contrast, correlation, and entropy are adopted to objectively characterize the images. ANN is employed to establish a mathematical model between the four co-occurrence matrices and the corresponding spheroidization grade.
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